Cements and concrete and artificial stone and ceramics and refractories (C04)

C   Chemistry; metallurgy(311501)
C04            Cements; concrete; artificial stone; ceramics; refractories(26956)
ethod of tpp low-lime cinder wastes processing with high content of unburnt coal particles with subsequent application of cinder wastes in production of construction materials and in construction // 2607555
FIELD: technological processes.SUBSTANCE: invention relates to combustion products processing methods and can be used at thermal power plants operating on coal fuels, as well as in construction industry, for example, in production of various construction materials. Method of TPP low-lime cinder wastes processing with high content of unburnt coal particles with subsequent application of TPP ash-slag wastes in production of construction materials and in construction TPP cinder wastes are granulated with binder, in form of lime in amount of 5–10 wt%, or clay in amount of 10–15 wt%, or liquid glass in amount of 3–7 wt% by sodium silicate, or TPP high-lime ash in amount of 10–40 wt%, granules are dried, additionally, before granulation with unburnt coal particles content in TPP cinder wastes of less than 15 wt% cinder mixture is added with ground coal in amount sufficient for enabling of cinder mixture calorific capacity in range of 6.3–7.5 kJ/kg, and before cinder mixture granulation at TPP cinder wastes liquid consistence from hydraulic ash removal system or ash dump said wastes are dehydrated util residual humidity of not more than 30 % with clarified water return to TPP, and unburnt coal particles removal is performed by cinder mixture granules burning at temperature of 850–900oC in fluidized bed boiler with cinder mixture coal particles burning until residual amount of not more than 1 wt% and heat recovery at TPP or in other consumers.EFFECT: increasing quality of TPP cinder wastes processing and obtained raw material for construction materials, cinder wastes recycling.1 cl, 1 ex, 1 dwg
Binder for manufacturing concrete or laminated products // 2607554
FIELD: chemistry.SUBSTANCE: invention relates to binder for forming particle-based or laminated products. Binder for forming particle-based or laminated products comprises a mixture of at least three components A, B, C, a first component A comprising a natural protein powder, a second component B comprising magnesium oxide, a third component C comprising magnesium chloride or magnesium sulphate solution at 32 °Be (15 °C), or a free combination of both.EFFECT: technical result is resistance to effect of weather conditions and prolonged thermal loads.8 cl, 8 dwg
ethod of producing carbon-carbon composite material // 2607401
FIELD: medical equipment.SUBSTANCE: invention can be used for the manufacture of thermal protection parts and medical devices. First produce a porous reinforcing base of carbon fibers on the surface of the carbon heater by the methods of laying or winding of carbon filaments, bundles, strips, fabrics or felt. Heater is made of carbon plate with a ratio of length:width of at least 1 and is located inside the reinforcing base. Then pyrocarbon matrix is formed in a medium of gaseous hydrocarbons at a temperature above the temperature of their decomposition under temperature gradient conditions created by heater.EFFECT: invention allows to simplify the production of flat plates of carbon-carbon composite material and to provide their optimum reinforcement, and hence mechanical strength.1 cl
ethod for preparation of cast hardening backfill mixtures based on fine aggregate // 2607329
FIELD: mining.SUBSTANCE: invention relates to mining industry and can be used in underground development of deposits with stowing of mined space with hardening mixtures based on fine aggregate, for example dressing tailings. Method for preparation of cast hardening backfill mixtures based on fine aggregate includes dosed supply of binder, water and their mixing, mixing binder in form of cement with water and preliminarily dehydrated in hydrocyclones fine aggregates – ore dressing tailings with size of 0.15 mm, after which obtained solution is subjected to homogenisation and activation in a pulse of hydropercussion-cavitation device with pulse frequency 5,000–6,000 im/s with following ratio of said components: ore dressing tailings – 1,039–1,246 kg/m3, cement – 170–400 kg/m3 of mixture, water 500 l.EFFECT: technical result is faster hardening and increased strength of filling mass due to higher degree of hydration and activation of components of backfill mixtures.1 cl, 4 tbl
ethod of producing finely dispersed crystalline powder of synthetic mineral alloy for fire-extinguishing powder compositions // 2607217
FIELD: chemistry.SUBSTANCE: invention relates to chemical industry and can be used for production of fine powders, in particular used as target additive to fire extinguishing powders in order to improve their fluidity. Raw material used is fused synthetic mineral alloy containing oxides of silicon, aluminium, calcium, iron, magnesium, titanium, chromium, potassium and/or sodium. To produce finely dispersed crystalline powder material is melted, primary fibre is stretched from obtained melt, which is cooled in air. Cooled primary fibre is subjected to grinding to produce a powder containing 55–60 wt% particles with size of 40–50 mcm and 25–30 wt% particles with size of up to 100 mcm.EFFECT: technical result consists in possibility of obtaining fine crystalline powder, having chemical, fractional compositions and fluidity corresponding to target additives used in fire-extinguishing powder compositions with minimum power consumption.1 cl
ethod of producing refractory materials // 2607115
FIELD: manufacturing technology.SUBSTANCE: invention relates to production of refractory materials. Method involves preparation of exothermic mixture of powders and mixture of powders of chemical furnace, formation of layered batch, initiation of combustion reaction therein in form of self-propagating high-temperature synthesis (SHS) with pressing of obtained SHS product. Mixture of powders of chemical furnace is made of stoichiometric mixture of powders of titanium and carbon black. Formation of layered batch is performed by placing exothermic mixture of powders inside mixture of powders of chemical furnace at ratio of thicknesses of exothermic mixture of powders and mixture of powders of chemical furnace equal to 1:0.5–1:4. Exothermal mixture of powders is separated from mixture of powders of chemical furnace 0.1–1.0 mm thick graphite layer. Initiation of combustion reaction in form of SHS is performed simultaneously in mixture of powders of chemical furnace and exothermic mixture of powders at pressure of 5–20 MPa and 1–20 s after initiation obtained SHS product is pressed under pressure of 100–450 MPA during 1–30 c, then it is cooled and obtained refractory material is separated from combustion products of mixture of powders of chemical furnace.EFFECT: decreased residual porosity and high hardness of material are achieved.1 cl, 1 dwg, 1 tbl, 2 ex
ethod of producing articles from refractory materials // 2607114
FIELD: technological processes.SUBSTANCE: invention relates to production of articles from refractory materials. Method involves preparation of an exothermic mixture of powders, forming a charge billet, initiating a reaction of self-propagating high-temperature synthesis (SHS) and pressing the obtained product of the SHS. Exothermal mixture of powders is pressed into briquettes with the thickness of 10–30 mm and the relative density of 0.5–0.7. Charge billet is formed in the form of layers of the said briquettes from the exothermic mixture of powders separated by a layer of graphite of 0.2–1.0 mm thick. SHS reaction is initiated simultaneously in all layers of the charge billet at the pressure of 5–20 MPa, herewith in 1–20 sec after the initiation the obtained product of the SHS is pressed at the pressure of 100–450 MPa for 1–30 sec.EFFECT: provided is obtaining articles with minimal residual porosity and high hardness.1 cl, 1 dwg, 1 tbl, 2 ex
Refractory concrete mixture // 2606889
FIELD: construction.SUBSTANCE: invention relates to production of concrete, which can be used in construction of thermal generating units. Refractory concrete mixture contains, wt%: alumina cement 32.0–34.0; kaolin 0.5–1.0; steel fibre with length of 5–10 mm 2.0–3.0; carborundum 12.0–13.0; alumina 4.0–4.6; clay – balance, with water–cement ratio 0.5–0.6.EFFECT: technical result is high heat resistance of concrete.1 cl, 1 tbl
ethod of producing construction material // 2606741
FIELD: construction.SUBSTANCE: invention relates to construction and relates to industry of construction materials, particularly, to production of any types of construction articles, road surfaces, and can be used in residential and industrial construction, construction of roads, in casting, chemical production and other fields. Method of producing construction material involves mixing silica and 5% alkaline solution at a ratio of dry and liquid components of 1:1 with simultaneous exposure of mixture to an electromagnetic field until complete dissolution of silica, adding obtained solution in amount of 4 % to 8 % of total volume of mixture to silica-containing raw material, including 5–10 % or 15 % cristobalite of total volume of mixture, then stirring mixture until complete wetting of silica-containing raw material, moulding articles from obtained mixture and processing by drying at a temperature of 40 °C to 80 °C or by steaming article at a temperature of 90 °C–120 °C, or by exposing article to microwave radiation. Invention is developed in subclaim.EFFECT: technical result is simplification of production of articles, high heat resistance, water resistance, strength, acid resistance, low water absorption.1 cl, 1 dwg, 1 tbl, 3 ex
Slurry for casting under pressure and made of refractory ceramics for gas-turbine plants // 2606739
FIELD: metallurgy.SUBSTANCE: invention relates to slurry for casting under pressure for production of refractory ceramics for use as thermal protection shield in gas turbine plants high temperature loop. Slurry contains mixture of grains of at least two materials with different thermal expansion factors, as well as xanthan as organic binder and thickener. Grain mixture has multimodal grains distribution by size, which looks as follows: 10–20 wt% of large-size grains with diameter of 1–5 mm, 10–20 wt% of average size grains with diameter of 0.5–1 mm and 60–80 wt% of small-sized grains with diameter of up to 0.5 mm. Distribution of grains by weight is selected such that total quantity of grains in mixture makes 100 wt%, and average size grains fraction at least by 20% consists of material with much low expansion factor.EFFECT: technical effect consists in making refractory ceramics with high resistance to thermal shock.6 cl, 1 dwg
ethod of shrinkage relative deformation minimization of hardening filling mass // 2606738
FIELD: mining.SUBSTANCE: invention relates to mining industry and can be used in development of mineral deposits with hardening stowing of mined-out space. Method of shrinkage relative deformation minimization of hardening filling mass is proposed to achieve the technical result, including arrangement of reinforcing elements simultaneously with hardening mixture in the mass, at that, to ensure uniformity, said mixture is required to be mixed for 25 minutes min, and chrysotile asbestos – chrysotile in an amount of 10 % of the binder weight are used as reinforcing elements.EFFECT: technical result of the present invention consists in stability improvement of the artificial roof, limitation of underground mining works negative influence on the environment, maintaining integrity of the ground surface and protecting it against sedimentation.1 cl, 1 tbl
Strengthening method of hardening filling mass // 2606729
FIELD: mining.SUBSTANCE: invention relates to mining industry and can be used in development of mineral deposits with stowing mined space. Method of hardening of filling mass, which involves placing in formed array of reinforcing elements simultaneously with hardening mixture used reinforcing elements are modified basalt microfibre (MBM) in amount of 7.1 % of binding substance weight. Microfiber contains, wt% basalt wool with organic impregnation – 99.3–99.6, carbon nano structures of fullerene type – 0.00001–0.01, water – rest.EFFECT: technical result is provision of safe conditions of mining operations at increase of strength of filling for tension.1 cl, 2 tbl
Composition for injection solution // 2606487
FIELD: construction.SUBSTANCE: invention relates to construction, and specifically to soils injection fixing compositions, mainly loess, in existing and newly constructed buildings and structures foundation. Injection solution composition contains binder and filler, wherein binding component is OTDV “Mikrodur”, and used filler is carbonate rock with chemical composition, wt%: CaO – 55.58; CO2 – 24.56; SiO2 – 9.42; Al2O3 – 2.90; MgO – 2.08; Fe2O3 – 1.05; SO3 – 0.53; CuO – wt%: OTDV “Mikrodur” 20–50, carbonate rock 50–80.EFFECT: technical result is reduction of costs and increased efficiency by providing high strength and water resistance of soil concrete mass, fixed by solution based on composition with maximum reduction of expensive imported product, OTDV (super fine binder) “Mikrodur”, with filler from local raw material, carbonate rock, which is brought to fine state.1 cl, 1 dwg, 1 tbl
Process of manufacturing of wall articles based on liquid glass and glass scrap by electric heating method // 2606486
FIELD: construction.SUBSTANCE: invention relates to manufacturing of construction articles, namely the light structural-heat-insulation wall blocks. Method of manufacturing of the structural-heat-insulation articles, which involves preparation of a mixture based on liquid glass, glass scrap and polystyrene, placing its into the mold, thermal treatment and dismantling of shuttering, a mixture is used, containing kg/m3 of the mixture: liquid glass with silica modulus of 2.7–3 and density of 1.33–1.36 g/cm3 – 296–337, sand of fraction of 0.25 mm and less – 170–195, package finely ground glass scrap of fraction of 0.125 mm and less – 400–455, as well as sodium silicofluoride – 10 % of the liquid glass weight, plasticizer C-3 – 0.03–0.05 % of the liquid glass weight, preliminary prepelleted beaded polystyrene of fraction of 1–2 mm – 815–930 l/m3 of the mixture, mixture is placed into the closed slot shape, thermal treatment is performed by electric heating for 5–10 minutes with alternative current of industrial frequency of 50 Hz and voltage of 50–80 V up to the mixture temperature of 90–100 °C.EFFECT: increase of production speed, reduce of costs and elimination of the need for any additional process steps for sealing the mixture in the production of the structural-heat-insulation articles, as well as the recycling of the glass scrap wastes.1 cl, 1 tbl
Titanium diboride granules as cathode protection against erosion // 2606483
FIELD: chemistry.SUBSTANCE: invention relates to granules of titanium diboride, used for coating graphite cathodes in electrolytic cells in production of aluminium by electrolysis of molten medium and for repairing holes in cathode bottom of electrolytic cells. Titanium diboride granules have rounded shape, size in accordance with sieve number between 1 and 10 mm and compression strength of at least 5 N. Granules are obtained by mixing TiB2 powder with raw binder materials, preferably oxide, in form of aluminium compounds, obtaining raw workpieces and thermal treatment at temperatures of at least 800 °C.EFFECT: technical result of invention is improvement resistance of granules to wear and breakdown and improved protection of electrolysis cell against erosion wear.22 cl, 11 ex, 1 tbl
Waterproof elastic plaster for interior and external works // 2606482
FIELD: construction.SUBSTANCE: invention relates to finishing building materials for interior and exterior and is intended for protective and decorative relief finishing of external and internal surfaces of brick, concrete, gypsum and articles made therefrom, plastered, as well as primed metal, is oriented chipboards, wood and other surfaces prone to cracking or consisting of separate parts. Technical result is effective waterproofing of surface, resistance to cracking, including at joints of parts and structural elements. Waterproof elastic plaster for interior and exterior contains, wt%: acrylic dispersion 20–35; marble chips fraction 0.5–2.5 mm to ensure required granular decorative coating 10–40; water-based paste with viscosity 1.5–6 MPa of activated fine marble micro particles 10–25; a paste of activated fine titanium dioxide based on water with viscosity 1.5–6 MPa 2–15; natrosol 0.3–1.7; biocide 0.01–0.05; an antifoaming agent 0.4–1.6; odorant 0.13–1.8; solvent to dilute acrylic dispersion 0.1–1.2, wherein said paste produced by processing in ultrasonic cavitation flow reactor aqueous suspensions of fine fraction marble chips and titanium dioxide with water content from 30 to 80 %.EFFECT: technical result is effective waterproofing of surface, resistance to cracking, including at joints of parts and structural elements.1 cl, 2 ex
Capsule and its application for providing additive for hydraulic composition // 2606480
FIELD: manufacturing technology.SUBSTANCE: present invention relates to use of the capsule as an additive for hydraulic composition the wall of the capsule contains a layer containing a water-soluble polymer, which includes a film-forming polymer, which is polyvinyl alcohol, having a melting point of 155–185 °C and melt flow rate of more than 3.0 g/10 min under 2.16 kg at 230 °C, measured according to the method described in the standard NFT 51-016, the additive for hydraulic composition is in the wall of the capsule. Invention also relates to a method of producing hydraulic composition and to design of capsule.EFFECT: reduced dusting, increased storage time without change of properties of additives.11 cl, 12 tbl, 4 ex
icroporous heat-insulating material // 2606440
FIELD: manufacturing technology.SUBSTANCE: invention relates to heat-insulating materials production and can be used in aerospace engineering, in instrument making, machine building, construction and other industries. Microporous heat-insulating material consists of spherical amorphous silicon dioxide particles with size of 100 mcm and flat silicon dioxide particles with size of up to 20 nm, silica fibres with diameter of 2–3 mcm, and plate-shaped mineral powder filler with particles size of 2–7 mcm, in following ratio of components, wt%: spherical particles of amorphous silicon dioxide 37.4–43.6; silica fibre 4.5–8.4; flat particles of amorphous silicon dioxide 19.3–24.8; titanium dioxide 27.3–33.2.EFFECT: invention allows to reduce of microporous heat-insulating material heat conductivity coefficient without essential deterioration of its strength characteristics.1 cl, 1 tbl, 3 ex
Pellet comprising aramid pulp and filler material // 2606438
FIELD: manufacturing technology.SUBSTANCE: invention relates to a pellet consisting of aramid pulp, filler material and moisture, wherein pellet contains not more than 90 wt% aramid pulp, at least 10 wt% filler material and less than 10 wt% moisture and in which amount of moisture, amount of aramid pulp and amount of filler material is 100 % by weight of pellet.EFFECT: invention also relates to a method for production of such pellet.14 cl
Concrete mixture // 2606147
FIELD: construction.SUBSTANCE: invention relates to compositions of fine-grained concrete mixtures, including sand, used to make concrete and reinforced concrete structures. Concrete mixture, including cement, fine quartz sand with particle size 0–0.5 mm, carbonate-silicic gaize and water, according to invention contains crushed carbonate-silicic gaize of fraction 0–5.0 mm having following granulometric composition, wt%: 1.6…2.2 (2.5–5.0 mm); 7.8…9.3 (1.25–2.5 mm); 20.1…22.0 (0.63–1.25 mm); 3.3…10.2 (0.315–0.63 mm); 11.6…12.4 (0.16–0.315 mm); 46…48 (less than 0.16 mm), with following ratio of components, wt%: cement 4.6–16.7, said quartz sand 59.6–60.5, said carbonate-silicic gaize 12.1–14.7, water – balance.EFFECT: technical result is low cement consumption and high crack resistance of sand concrete after heat and moisture treatment.1cl, 1 tbl
ethod of producing granular construction material // 2605982
FIELD: construction.SUBSTANCE: invention relates to production of construction materials, in particular, to production of artificial porous aggregates for concrete and granular heat-insulating materials for charging of heat insulation, as well as to production of semi-finished product for production of granulated construction material. Method of producing granular construction material, which involves preparation of a silica component, preparation of a binding solution, mixing of components, granulating mixture and heat treatment, binder solution is prepared based on colloidal silica and soluble salts of alkali metals by combined wet grinding with simultaneous dissolution of sodium silicate with silica modulus of 1.0 to 4.0, sodium carbonate and/or other water-soluble compounds of alkali metals at temperature 80–110 °C, at following ratio of basic components: vitreous sodium silicate – 10–50 %, sodium carbonate – 5–40 %, water – 40–80 %, wherein mixing silica component with a binding solution is combined with addition of gas-forming agent and granulation of mixture, wherein mixing and granulation are carried out in one device – granulator with ratio of binding solution and silica component from 1:5 to 1:1.2, then raw granules are subjected to thermal treatment: drying to moisture content 1–15 % and annealing at 750–1,100 °C, wherein total content of alkaline oxides in finished material ranges from 5 to 20 wt%. Invention is developed in subclaims.EFFECT: improved operational characteristics of material, particularly low packed density and volumetric water absorption.6 cl, 10 ex
Synthetic proppants and monodisperse proppants and methods for production thereof // 2605977
FIELD: manufacturing technology.SUBSTANCE: invention relates to propping fillers and methods of their production. Described are multiple ceramic proppants, where the fillers are monodispersed with the distribution, which is a distribution of 3-sigma or lower with the total distribution width of 5 % or less of the average particle size, as well as other versions of the said fillers, methods of making those proppants and methods of using the said proppants in extraction of hydrocarbons. Invention is developed in depending points of the formula.EFFECT: higher degree of monodispersity of the propping agent, efficiency of its production, higher efficiency of hydraulic fracturing using the said fillers.165 cl, 38 dwg, 13 tbl, 7 ex

High-emissive coating compositions and methods for production thereof // 2605880
FIELD: technological processes.SUBSTANCE: group of inventions relates to high-emissive coating compositions and methods of their production. Thermionic coating composition for a substrate includes a dry mixture of substances increasing emission capacity of the coating, herewith the substances increasing emission capacity of the coating contain titanium dioxide, and substances, which increase mechanical strength. In another version the composition additionally contains a solution-based component containing phosphoric acid. Method of producing the coating involves determination of a specified level of the coating emission capacity, determination of concentration of titanium dioxide, determination of adhesion properties and manufacturing of the thermionic coating composition.EFFECT: technical result is increased heat emission by radiation.35 cl, 5 dwg, 4 tbl, 7 ex

Rheologically stable aqueous suspensions of mineral material containing organic polymers with low content of volatile organic compounds (voc) // 2605586
FIELD: paper industry.SUBSTANCE: invention can be used in production of paper, plastics, dyes, coatings, concrete, in agriculture and biotechnology. Rheologically stable aqueous suspension of mineral material contains at least one mineral material and at least one polymer of acrylic and/or methacrylic acid taken in the amount of 0.01 to 10 wt% per total weight of the solid substances in tha suspension. Said polymer is obtained by polymerizing a monomer(s) of acrylic and/or methacrylic acid in water using the compound of formula (I) where X is Li, Na, K or H, and R is alkyl chain containing 1-5 carbon atoms. Compound of formula (I) is used in the amount of 0.1-2.5 wt% by weight of the said monomer(s). It has weight-average molecular weight Mw from 800 to 8,000 g/mol, coefficient of polydispersity Ip in the range from 2 to 3. Suspension of mineral material has content of volatile organic compounds (VOC) of ≤ 20 mg/kg.EFFECT: invention enables to obtain a suspension of mineral material containing organic polymers with low content of VOC while preserving rheological stability and without deterioration of optical properties of the paper produced using the said suspension.25 cl, 1 dwg, 4 tbl, 2 ex

Pavement mixture // 2605569
FIELD: roads.SUBSTANCE: invention relates to road construction materials production, which can be used in construction of pedestrian roads, sites. Mixture for pavement, containing binder, mineral powder, quartz sand, contains powder of slug, wastes of glass fibre production, and as binder is coal tar with following ratio of components, wt%: coal tar 4.0-6.0; slug powder, wastes of glass fibre production 3.0-20.0; quartz sand 74.0-93.0.EFFECT: technical result is reduction of pavement porosity.1 cl, 1 tbl

Refractory mixture // 2605567
FIELD: metallurgy.SUBSTANCE: invention relates to production of refractory mass, which can be used for lining thermal generating units. Refractory mixture contains, wt%: chromite ore 60.0-64.0; magnesite 22.0-27.0; sodium hexametaphosphate 2.2-2.1; corundum 10.8-11.5.EFFECT: technical result consists in improvement of fire-resistance of coating.1 cl, 1 tbl

Dispersing agent for solid suspensions // 2605405
FIELD: chemistry.SUBSTANCE: invention relates to application of polymer of formula (XIV) , where radicals, as it is defined in claim, as a dispersant for substances in powder form, selected from a group consisting of clay, porcelain mixture, silicate dust, chalk, black soot, stone dust, pigments, talc, polymer powders and mineral binding substances. Invention also relates to a method for improvement of fluid properties of substances in powder form, to a mixture, which contains substance in powder form and polymers having formula (XIV), invention also relates to a mixture of binding substances.EFFECT: polymers are characterised by fast dispersing and plasticising effect for suspensions of solid substances, retain their efficiency during prolonged storage.16 cl, 2 tbl, 12 ex

Polymer composition for producing silicon carbide // 2605257
FIELD: chemistry.SUBSTANCE: invention relates to chemical industry for producing heat-resistant highly porous articles from silicon carbide, which are used as filters, heat insulation, absorbents. Polymer composition for producing silicon carbide of stoichiometric composition in form of finished porous articles contains powdered phenol binder based on novolac phenol-formaldehyde resin and urotropin, lubricant in form of zinc stearine or zinc stearate, and a silicon dioxide support, in form of ground quartz fibre from industrial wastes of their production, in following ratio of components, wt%: ground quartz fibre - 45.2-48.7; phenol binder - 46.1-52.0; lubricant - 2.0-5.5.EFFECT: invention widens raw material sources for producing silicon carbide, improves chemical purity of finished product, as well as rational use of industrial wastes for production of quartz fibre.1 cl, 1 tbl, 5 ex

Heat-insulating structural material based on magnesite-carnallite binder // 2605248
FIELD: construction.SUBSTANCE: invention relates to production of construction materials and can be used for making heat-insulating, structural-heat insulating and structural concretes, intended for residential construction. Heat-insulating material contains, wt%: magnesite-carnallite binder 54-60, chopped straw 20-26, water 19.65-19.75, foaming agent 0.25-0.35.EFFECT: technical result consists in improvement of strength, reduction of water absorption and heat conductivity.1 cl, 2 tbl

Heat-insulating material based on magnesite-carnallite binder // 2605246
FIELD: construction.SUBSTANCE: invention relates to production of construction materials and can be used for making heat-insulating, structural-heat insulating and structural concretes, intended for residential construction. Heat-insulating material contains, wt%: magnesite-carnallite binder 78-82, 17.75-21.65, foaming agent 0.25-0.35.EFFECT: technical result consists in improvement of strength, reduction of water absorption and heat conductivity.1 cl, 2 tbl

Heat-insulating material based on magnesite-carnallite binder // 2605245
FIELD: construction.SUBSTANCE: invention relates to production of construction materials and can be used for production of heat-insulation, structural-heat insulating and structural concretes, intended for residential construction. Heat-insulating material contains, wt%: magnesite-carnallite binder 37-43, serpentine sand 37-43, water 19.65-19.75, foaming agent 0.25-0.35.EFFECT: technical result consists in improvement of strength, reduction of water absorption and heat conductivity.1 cl, 2 tbl

Heat-insulating carnallite-concrete // 2605244
FIELD: construction.SUBSTANCE: invention relates to production of construction materials and can be used for making heat-insulation, structural-heat insulation and structural concrete, intended for residential construction. Heat-insulating material contains, wt%: magnesite-carnallite binder 37-43, quartz sand 37-43, water 19.65-19.75, foaming agent 0.25-0.35.EFFECT: technical result is improvement of strength, reduced water absorption and thermal conductivity.1 cl, 2 tbl

Charge for porous material "penozol" making // 2605212
FIELD: construction.SUBSTANCE: invention relates to construction materials technology, more specifically to preparation of charge for porous material production and articles based thereon for industrial and construction industry. Charge for porous material production contains, wt%: coal TPP aluminosilicate ash 78-92, powdered silicon carbide with fraction 0.1-300 mqm 0.1-0.8, powdered glass scrap with fraction of 0.1-300 mqm is rest.EFFECT: technical result is increasing of porous material strength made from charge, with simultaneous reduction of porous material volumetric weight and moisture permeability.1 cl, 1 dwg, 1 ex

Wood-cement mixture for making building blocks // 2605110
FIELD: construction.SUBSTANCE: invention relates to wood-cement mixtures, which contain inorganic binding and used for fabrication of building blocks in low-height construction. Wood-cement mixture for building blocks comprises softwood shavings, cement, liquid glass, calcium chloride, polypropylene fibres, foam polystyrene granules and talcum peach in form of particles with size of up to 500 mcm, including up to 0.02 % of particles with size below 0.5 mcm, at ratio of components, wt%: portland cement 38.4-45.4; sawdust 45-52; calcium chloride 2-9; liquid glass 3-10; talcum peach 4-11; granular foamed polystyrene 0.5-2; polypropylene fibres 0.1-0.2, wherein addition of water to mixture is made until achieving water-cement ratio of 0.7-1.1.EFFECT: technical result consists in improvement of ecological compatibility and strength of material.1 cl, 2 tbl

ethod of producing artificial fluorspar (caf2) from phosphoric acid production wastes (phosphogypsum) for use in making cement // 2604693
FIELD: chemistry.SUBSTANCE: invention relates to chemical industry. Method involves treatment of phosphogypsum from water-soluble residues of acids by mixing it with water and intensive stirring until dissolution of said residues in water. Phosphogypsum is squeezed from water and obtained water is removed. Such water are mixed with raw material, containing calcium carbonate and used for wet cement production method. Sludge is obtained, containing fluorspar. Purified phosphogypsum is granulated and dried with air. Calcium sulphate dihydrate is obtained, which is used as an additive in ground clinker, obtained in making cement using a wet method.EFFECT: technical result is reduction of power consumption, temperature during cement production, consumed fuel, optimising and simplifying technology for production of cement.7 cl, 4 tbl

Radio-transparent protective coating of articles from ceramics, glass-ceramic, glass ceramic and method for production thereof // 2604541
FIELD: ceramic industry.SUBSTANCE: invention relates to production of ceramic and glass-ceramic articles, operating under conditions of high heat and power loads with one-sided heating. Disclosed is composition and method of producing radiotransparent, impact-resistant protective coatings for radio engineering purposes articles, for example antenna domes, radio-transparent windows from brittle inorganic materials. Radio-transparent protective coating of ceramic articles, glass ceramic, glass-ceramic comprises quartz glass-cloth, dressed with aluminium and/or chromium oxides, impregnated with binder aqueous solution, consisting of chrome alumino-phosphatic binder, alkaline silica sol and powder filler with particles size of 0.5-100 mqm from article material with following ratio of components, wt%: chrome alumino-phosphatic binder 2-10; alkaline silica sol 35-45; powdered filler 45-55, and coating thickness is 0.5-5.0 mm. Method of radiotransparent protective coating producing involves layer by layer application of quartz glass fabric on article, glazed by “sol-gel” technology with aluminium and/or chrome oxides and impregnated with aqueous solution of chrome alumino-phosphatic binder, alkaline silica sol and powder filler with particles size of 0.5-100 mqm from article material in specified ratio, followed by vacuuming and pressing during heating to temperature of 300-350 °C, which is followed by heat treatment at temperature of 400-600 °C for 1-2 hours.EFFECT: proposed coating considerably increases ceramic thin-walled articles resistance to power and heat loads, ensures preservation of radio properties in wide range of operating temperatures, better heat protection both articles themselves, and located inside assemblies and articles.4 cl, 1 tbl, 3 ex

Composition for bonding ceramic composite materials based on silicon carbide // 2604530
FIELD: ceramic industry.SUBSTANCE: invention relates to bonding ceramic materials to form a ceramic bonding layer and can be used in production of complex-shape ceramic structures for power machine building, engine production, aerospace equipment. Composition for bonding ceramic composite materials based on silicon carbide contains powder of crystalline silicon, carbon-containing material - soot or artificial graphite, powder of amorphous boron and silicon carbide powder in following ratio, wt%: Si - 30-33 and 34-38, C - 18-19 and 21-22, B - 5-12 and 13-15, SiC - balance. Composition is used for bonding ceramic composite materials based on silicon carbide under conditions of formation of silicon carbide from carbon and silicon.EFFECT: bond is resistant to sharp thermal cycles and maintains shear strength of not less than 21 MPa.1 cl, 3 ex, 2 tbl

Porous aggregate for light concrete and heat insulating infillings // 2604527
FIELD: construction.SUBSTANCE: invention relates to industry of construction materials, in particular to granular foamed glass clone - porous aggregate for light concrete and heat insulating infillings in different building structures for insulation, for example, walls, floors, roofs of industrial and civil buildings. Porous aggregate for light concrete and heat insulating infillings contains, wt%: thermal power plant slag 50-60, scrap glass 30-40, glycerine 4, boric acid 6.EFFECT: technical result consists in reduction of foaming temperature up to 850-870 °C, density and thermal conductivity coefficient.1 cl, 1 tbl

Composite piezoelectric ceramic material // 2604359
FIELD: ceramic industry.SUBSTANCE: invention relates to composite piezoelectric ceramic materials based on oxygen-octahedral type phases and can be used for making hydroacoustic devices, as well as microwave and ultrasonic devices, devices for accurate positioning of objects (lithography, tunnel focused-beam microscopes), etc. Composite piezoelectric ceramic material contains: phase A, obtained from PbO, ZrO2 and TiO2 with following ratio of components, in molar ratio (PbO:ZrO2:TiO2):[1:(0.33-0.39):(0.61-0.67)]; phase B obtained from PbO, ZnO, NiO·nH2O and Nb2O5 at following ratio of components, in molar ratio (PbO:ZnO:NiO·nH2O:Nb2O5):[1:(0.08-0.12):(0.22-0.25):0.33], where n = 1-3; phase C, obtained from PbO, Fe2O3·mH2O and Nb2O5 at following ratio of components, in molar ratio (PbO:Fe2O3·mH2O:Nb2O5):[1:0.25:0.25], where n = 1-3. Content of phases A, B and C in system in molar ratio is [(1-k/2) (0.54-0.6) A]+[(1-k/2)(0.4-0.46) B]+[kC], where k = 0.01-0.10.EFFECT: technical result is increased values εT 33/ε, piezoelectric moduli and given parameters, determining efficiency of piezoelectric materials with preservation of high values Kp.1 cl, 3 ex, 4 tbl, 5 dwg

ethod of preparing asphalt concrete mixture (versions) // 2604240
FIELD: construction.SUBSTANCE: invention relates to construction materials and articles, namely to a method of preparing asphalt mix. Method of preparing asphalt mix containing bitumen in the amount of 3-9 wt%, hydrolyzed lignin with the fraction from 0 to 2.5 mm with the moisture content of 10-50 % in the amount of 3-10 wt% and a mineral material, which contains crushed stone in the amount of 30-70 wt% and sand from grinding screenings - the rest involves simultaneous feeding hydrolyzed lignin and heated up to 130-150 °C bitumen binder to the mixer with heated up to 130-150 °C mineral material. In another version hydrolytic lignin is fed immediately before injection of the heated bitumen binder to the mixer with the heated mineral material.EFFECT: technical result is higher strength, shear resistance and crack resistance of the asphalt-concrete mixture, as well as reduced mineral materials heating temperature.2 cl, 3 tbl, 1 ex
Self-hardening fine-grained concrete mixture // 2603991
FIELD: construction.SUBSTANCE: invention relates to fine self-sealing concrete mixture and can be used for repair works and for embedment of joints of prefabricated reinforced concrete structures, including prestressed: beams, supports, bridge plates, densely reinforced surfaces and, in particular, for remote areas of structures, where technology requires increased fluidity at stage of application and high early strength. Fine-grained self-hardening concrete mixture is prepared by mixing water with Portland cement with specific surface area of 360 m2/kg, quartz sand with fineness modulus MCD= 1.9 and quartz filler with specific surface area of 100 m2/kg at solid-water ratio of 0.112-0.128 and stirring till achieving homogeneity with subsequent addition of superplasticizer into produced mixture, which is based on polycarboxylate ether Glenium® ACE 430 and hardening Accelerator X-SEED 100® based on calcium hydrosilicate suspension and stirred till its consistency is monolithic with following ratio of said components in wt%: said Portland cement 44.2-44.7, said quartz sand 33.1-39.1, said quartz filler 5.6-11.1, said superplasticiser 0.3-0.4, said hardening accelerator 0.2, water 10-11.1.EFFECT: production of self-hardening fine-grained concrete mix providing concrete strength class at compression of no less than B 35 on third day of hardening, which can be used for accelerated construction of concrete structures and emergency repair of hard-to-reach areas of structures.1 cl, 1 tbl

Composition for injection solution // 2603989
FIELD: construction.SUBSTANCE: invention relates to construction, namely to compositions for injection fixing of loess soils in base of existing and constructing buildings and structures. Invention enables to obtain soil-concrete arrays with high strength properties (up to 25 MPa) and high water resistance at maximum replacement (up to 80 %) with local raw material of expensive import product OTDV “Microdur”, which reduces costs and increases efficiency, when performing injection works on fixing loess subsiding soils.EFFECT: technical result is reduction of costs and higher efficiency due to high strength and water resistance of soil-concrete array, fixed with solution on basis of binder component, with maximum reduction of expensive import product OTDV “Microdur” and filler of local raw material, which is cement kiln dust.1 cl, 1 tbl

System and method for the production of gypsum board using starch pellets // 2603988
FIELD: construction.SUBSTANCE: invention relates to the production of gypsum board plate (plates dry plaster), use of foamed starch pellets in the production of lightweight gypsum board. Technical result is an improvement of a strength and a lightness of the gypsum board plate. In accordance with the present disclosure, the starch necessary for board formation is provided in the form of starch pellets. These pellets are mixed with a gypsum slurry in a mixer. Pellets are initially insoluble and do not dissolve. However, during subsequent drying stages, the pellets become soluble and dissolve into the gypsum phase.EFFECT: this both provides the desired starch component and also results in the formation of voids within the set gypsum.24 cl, 5 dwg

Refractory mixture // 2603860
FIELD: construction.SUBSTANCE: invention relates to production of mixtures, which can be used as coating material in construction of furnaces. Refractory mixture contains, wt%: liquid potassium glass with density of 1,300-1,350 kg/m3 and silica modulus of 3.6-4 30.5-31.5, kaolin 1.0-3.0, steel fibre with length of 5-10 mm 1.0-3.0, alumina 9.5-12.0, chamotte is rest.EFFECT: technical result is increasing in heat resistance.1 cl, 1 tbl
ethod of producing aluminium diboride // 2603793
FIELD: technological processes.SUBSTANCE: invention relates to boron and compounds thereof, specifically to methods for synthesis of aluminium diboride, which is a promising energy material for rocket fuel. Aluminium diboride is obtained by high-temperature treatment of a mixture of powders of boron and aluminium in an inert atmosphere by preparing a mixture of aluminium powder with particle size of not more than 0.01 mm, with boron powder with particle size of not more than 0.001 mm with atomic ratio of components of 1:2.05 to 1:2.1; formation of briquettes from obtained mixture with maximum size of not more than 22 mm and minimum size of not less than 2 mm and porosity of not more than 44 %; further placing briquettes in atmosphere of a neutral gas; heating to temperature of 100-500 °C; igniting heated mixture by local heating of part of its surface to temperature of 950-1,150 °C; and synthesis of aluminium diboride in mode of layer-by-layer burning at a temperature of 820-920 °C.EFFECT: invention allows at minimal consumption of electric energy to obtain a practically single-phase product containing more than 95 wt% AlB2.1 cl, 1 ex

Solution for preliminary pumping into soils of bases for elimination of deformations of buildings and structures // 2603786
FIELD: construction.SUBSTANCE: invention relates to reconstruction of building structures. Solution for preliminary pumping into soils of bases for elimination of deformations of buildings and structures, containing a mixture of water and dry ingredients on a mineral base with following ratio, wt%: microcement (type microdur) 20-50; colloidal silica 5-15, hydrated lime Ca(OH)2 10-25; mineral microfiller, for example carbonate flour, 20-50; suspension viscosity regulator, for example superplasticiser C-3, up to 2 % of weight of binder; water-retaining additive, for example, methylcellulose, up to 5 % of weight of binder.EFFECT: reduction of labour and materials consumption and higher reliability of works on elimination of deformations of buildings and structures.1 cl, 1 dwg
ethod of residential and production premises of concrete buildings cleaning of ammonia // 2603686
FIELD: construction.SUBSTANCE: invention relates to construction, particularly to residential facilities sanitation method. In method of residential and industrial rooms, concrete buildings cleaning of releasing from concrete ammonia, based on non-volatile inorganic and organic strong acids solution introduction into concrete or into finishing materials applied onto it with article heating and solution itself, as well as introduction of absorber for ammonia neutralization using chemical method, absorber is expanded pearlite, which is placed into non-volatile strong acids solution before introduction into concrete or finishing materials, thoroughly stirred. After excess acid solution removal and partial drying pearlite granules are subjected to outer surface mechanical cleaning of acid residues. Then granules are placed in ready finishing solution for application on concrete surface or into concrete solution itself for production of structures and thoroughly mixed with them.EFFECT: technical result is intensified ammonia sanitation process releasing from construction materials, more deep purification of building structures from contaminants.5 cl

Composition for road construction // 2603682
FIELD: roads.SUBSTANCE: invention relates to road construction and can be used for arrangement of bases and topping of roads. Composition for road construction contains a mineral binder, filler, water and chemical additives such as octyltriethoxysilane / octyltriethoxysilane emulsion and an aqueous solution of copolymer based on polyoxyethylene derivatives of unsaturated carboxylic acid/carboxylate polyether, in the following proportions, wt%: portland cement - 6-12, filler - 72-88, octyltriethoxysilane/emulsion octyltriethoxysilane - 0.005-0.04, aqueous solution of copolymer based on polyoxyethylene derivatives of unsaturated carboxylic acid/carboxylate polyether - 0.02-0.20, water - 4.83-17.94.EFFECT: high frost resistance and strength of materials from soil, sand and macadam-sand mixtures, as well as economic efficiency of construction.1 cl, 1 tbl, 1 ex
Composition of ceramic layer for making moulds and other articles // 2603402
FIELD: metallurgy.SUBSTANCE: invention can be used for production of casts by method of casting on molten models. Composition contains a liquid ceramic mass and ceramic material for dusting. Liquid ceramic mixture contains, wt%: 50-75 % - ceramic material, which is a mixture with particle size distribution, containing at least 90 % particles with size less than 0.04 mm, havin following phase composition: 30-90 % forsterite Mg2SiO4, 5-15 % fiyalite Fe2SiO4 and 5-65 % of mixture of phase components, such as chrysolite 2(Mg0.88Fe0.12) SiO2, enstatite MgSiO3, tremolite Ca2Mg5Si8O22(OH)2, ringwoodite (Mg,Fe)2, diopside Ca(Mg,Al)(Si,Al)2O6 and other, and 25-50% binder containing aqueous or aqueous-organic colloidal solution of metal oxide and modifiers. Ceramic material for dusting is a mixture, having following phase composition, wt%: 30-90% forsterite Mg2SiO4, 5-15 % fayalite Fe2SiO4 and 5-65 % of mixture of phase components, such as chrysolite 2(Mg0.88Fe0.12)SiO2, enstatite MgSiO3, tremolite Ca2Mg5Si8O22(OH)2, ringwoodite (Mg,Fe)2, diopside Ca(Mg,Al)(Si,Al)2O6 and others.EFFECT: preventing breakdown of moulds when filling with metal and possibility of directional solidification of castings.1 cl, 4 ex

ethod of producing multifunctional ceramic matrix composite materials (versions) // 2603330
FIELD: chemistry.SUBSTANCE: invention relates to production of multifunctional composite materials with ceramic matrix of silicon carbonitride, formed on a base of porous reinforcing frame, made from carbon fabric or fibre in form of threads, bundles or layered filaments with a continuous or discrete structure. Such materials are used in power heat-loaded parts of aircraft, combustion chambers and other items for aerospace and aviation equipment. Disclosed method of producing multifunctional ceramic matrix composite materials in volume of porous reinforcing frame, made from carbon fabric or fibre in form of threads, bundles and layered filaments with a continuous or discrete structure, comprises forming a ceramic matrix of silicon carbonitride by chemical vapour deposition (CVD) of silane with nitrogen-bearing precursor to preset density and process of multiple cyclic impregnation of frame with preceramic polymer (silazane) with subsequent polymerisation and pyrolysis (SPP). Chemical deposition is carried out in gas-vacuum furnace at temperature 500…900 °C and pressure of 50…500 Pa, and repeated (from 2 to 4 times) cyclic impregnation of frame with preceramic polymer and subsequent polymerisation and pyrolysis is performed in vacuum compression furnaces at temperature of up to 1,600°C and pressure of up to 20 MPa. Another version of method comprises first a step of SPP, and then CVD.EFFECT: technical result of patented versions of method is production of ceramic matrix composite materials with density in range of 1,8- 2,1 g/cm3, resistance to mechanical and thermal cyclic loads and level of oxidation resistance at 400-1,400 °C.10 cl, 2 tbl, 3 ex
 
2550993.
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