Integrated high-temperature heat-retention material "itom" and a method for manufacture thereof |
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IPC classes for russian patent Integrated high-temperature heat-retention material "itom" and a method for manufacture thereof (RU 2246465):
 Method of manufacture of heat-insulated articles, line for realization of this method and metal mold of line (versions) / 2244696
Proposed method includes preparation of polystyrene concrete mix from binder, foamed polystyrene and water, molding articles from this mixture and heat treatment. Prior to preparation of mixture, foamed polystyrene is subjected to foaming performed at two stages as minimum. At two stages as minimum. At first stage, polystyrene gravel at density of 12-30 kg/cu m is obtained. At subsequent stages its density is brought to 6-11 kg/cu m; polystyrene gravel may be obtained by grinding wastes of articles made from polystyrene to grain composition of fractions to 1-15 mm. Introduced additionally into mixture is air-entrapping additive hardening accelerator and water-reducing additive which are thinned with water. Articles are molded by placing the mixture in metal molds. Mixture is fed to each cell of metal mold by means of hose by forcing it from pneumatic concrete mixer by compressed air. After heat treatment, metal molds containing articles are delivered to demolding station where are subjected to vibration treatment for separation of articles from molds. Then, articles are removed from metal molds. Line proposed for realization of this method includes foaming unit, service bins and proportioners for foamed polystyrene, binder and water, at least one pneumatic concrete mixer for preparation of polystyrene mixture and molding and demolding stations. Proportioners for aqueous solution of hardening accelerator, air-entrapping additive and water-reducing additive, service reservoirs for air-entrapping additive, hardening accelerator and water-reducing additive, screw feeder for delivery of binder to proportioner, vibration table, metal molds with covers, pipe lines with shut-off cocks and swivel chutes, control console and hose. Proportioner is located under service bin forming single reservoir which may be divided by mechanical splitter. Pneumatic concrete mixer is provided with horizontal shaft at volume of 0.6 to 2 cu m. Metal mold is provided with sump having hinged sides, partitions, cargo-gripping mechanism and cover located on sump of cassette. Each cassette is made in form of platform formed by horizontal square sheet and four vertical sheets rigidly secured on horizontal sheet, shifted relative to center axes and interconnected in T-shaped pattern perpendicularly relative to each other forming four cells over perimeter of platform and central cell. Cells over perimeter of platform have three free faces. Cargo-gripping mechanism is located in central cell partitions are mounted between cassettes and are pinched by two vertical sheets. Cover is made in form of metal sheet pressed to upper faces of cells, partitions and sides. According to second version, metal mold has sump and at least one cell heat-insulated articles. Each cell is formed by bottom of sump and two z-shaped profiles clamped together and provided with changeable inserts placed between z-shaped profile. Each z-shaped profile has two side and one central webs. Side surfaces of all webs are perpendicular to plane formed by sump bottom. Changeable inserts are secured on side webs of z-shaped profiles. Each z-shaped profile forms one of subsequent cells by its one cell.
 Concrete containing organic fibers, dispersed in cement mortar (variants) / 2245858
Concrete containing solidified cement mortar with dispersed organic fiber is obtained by mixing of composition with water. Concrete also contains: (a) cement, (b) grained components, (c) fine dispersed puzzolane components, (d) at least one dispersing additive. Grained components (b) have particles of maximum size D not more than 2 mm, preferably not more than 1 mm. Fine dispersed puzzolane components (c) have elementary particles of size not more than 20 µm, preferably not more than 1 µm. Water content as reduced to mass of cement (a) and fine dispersed puzzolane components (c) is from 8 % to 25 %. Length of individual organic fibers I is at least 2 mm, and ratio of 1/⊘ is at least 20, wherein ⊘ denotes fiber diameter. Fiver volume is not more than 8 % of concrete volume after solidifying. Ratio R of average fiber length L and maximum size D of grained component particles is at least 5. Concrete tested to direct extension has ductility coefficient δ>1, preferably δ>1,25.
Concrete containing organic fibers, dispersed in cement mortar (variants) / 2245858
Concrete containing solidified cement mortar with dispersed organic fiber is obtained by mixing of composition with water. Concrete also contains: (a) cement, (b) grained components, (c) fine dispersed puzzolane components, (d) at least one dispersing additive. Grained components (b) have particles of maximum size D not more than 2 mm, preferably not more than 1 mm. Fine dispersed puzzolane components (c) have elementary particles of size not more than 20 µm, preferably not more than 1 µm. Water content as reduced to mass of cement (a) and fine dispersed puzzolane components (c) is from 8 % to 25 %. Length of individual organic fibers I is at least 2 mm, and ratio of 1/⊘ is at least 20, wherein ⊘ denotes fiber diameter. Fiver volume is not more than 8 % of concrete volume after solidifying. Ratio R of average fiber length L and maximum size D of grained component particles is at least 5. Concrete tested to direct extension has ductility coefficient δ>1, preferably δ>1,25.
Integrated high-temperature heat-retention material "itom" and a method for manufacture thereof / 2246465
Invention concerns manufacture of articles for heat-retention of furnace units and power equipment operated at surface temperatures up to 1100°C. Invention provides charge mixture containing, wt %: swollen vermiculite 20-60, refractory clay or kaolin 37-55, electrofilter dust 1-20, chamotte fraction below 0.063 mm 1-30, and structure-forming polyelectrolyte 3-5 (above 100%). Charge is moistened to form mass, which is aged in closed space for at least 24 h, molded into crude article, dried to residual moisture at most 5%, and fired at 1000-1100°C. Aforesaid polyelectrolyte is characterized by having carboxyl, amide, nitrile, and ester groups in polymer molecule.
 Heat-resistant superhighquality concrete, the method of its production and the bonding array for this concrete / 2274618
The invention is pertaining to the field of construction materials industry, in particular, to production of the fibrous concrete. The technical result of the invention is production of the superhighqualitative concrete characterized by the high refractory strength, the controlled rheological properties and the good mechanical properties. The invention characterizes the application of the organic fibers having a fusion point less than 300°C, the medial length exceeding 1 mm and the diameter of no more than 200 micron in the superhighqualitative concrete for improvement its refractory properties. At that the content of the organic fibers is such, that their size makes from 0.1 up to 3 % of the size of the concrete after is hardening, and the concrete in 28 days possesses the compression strength of no less than 120 MPa, the bending strength of no less than 20 MPa and the flow index in the not hardened state is no less than 150 mm. At that these values concern to the concrete being at 20°C, which consists out of the especially hardened cementing array, in which the metallic fibers are distributed. The invention also describes the heat-resistant superhighquality concrete containing metallic reinforcing fibers and the organic fibers ensuring the desirable properties, as well as the method of production of this concrete and the cementing array for the concrete.
Method of production of the vesicular mica / 2296725
The invention is pertaining to the treatment by splitting of the easily laminated micas, in particular, the vermiculite, the phlogopite and others. The technical result of the invention is the decreased bulk apparent density and the increased volume of the vesicular mica. The method of production of the vesicular mica includes the treatment of the initial mica with the hydrogen peroxide with the following thermal treatment. The treatment is conducted with the hydrogen peroxide having its concentration of 36-50 %. The produced mixture is aged till the mixture temperature drops to the room temperature, and the thermal treatment is conducted at 150-300°С with provision of the volumetric increase of the initial mica in 25-43 times.
Composition used for producing heat insulating products / 2349564
Invention refers to building material industry and can be used when producing heat insulating products. Composition used for producing heat insulating products includes as follows: vermiculite-airbrick, mixture of chemical agents: hydric dioxide (concentration - 35%) and sulphuric acid (concentration - 40%) in the ratio 3:1 in terms of volume, and additive - asbestos, at the following component ratio, % of vermiculite-airbrick mass: the above mixture of acids - 40-50, and asbestos - 5-10.
Raw mix for production of light fire-resistant fibrous concrete / 2361847
Raw mix for production of light fire-resistant fibrous concrete includes the following components, wt %: aluminium powder 3-4, orthophosphoric acid of 60% concentration 24-26, aluminous slag 32.5-34.5, sulphite slag 13-15, vermiculite with fraction of 0-5 mm 18-26, fibrous fibers from wire "Chromel T" with diametre of 0.5 mm, length of 30 mm 1.5-2.5.
 Fireproof raw mix / 2372314
Invention is related to industry of construction materials and may be used by industrial and construction enterprises for fire protection of construction elements. Fireproof raw mix includes the following components, wt %: Portland cement 11.9-35.8; foamed vermiculite 12.3-16.8; wastes of volcanic tuff sawing 5.8-9.1; saponated wood tar 0.08-0.13; quicklime 0-17.9; construction gypsum 0-0.7; the rest -water.
Method for production of vermiculite heat-insulating composition / 2392254
Method for preparation of vermiculite heat-insulating composition includes mixing binder - portland cement with additives with dry components of filler - blown-out vermiculite and ground mineral fibre, besides binder is previously mixed with mixing water, then mixed with 25-30% of mixture of dry filler components, and in 20-30 minutes it is mixed with remaining part of dry filler components mix previously heated up to 80-85°C in 5-10 minutes, and produced heat-insulating composition is maintained for 15-20 minutes before application onto protected surface.
Method of producing expanded vermiculite / 2444484
Invention relates to heat insulating materials made from natural vermiculite. Natural vermiculite is treated with an electromagnetic field with frequency which is resonant for OH groups in the vermiculite crystal structure.
Method of producing strongly-stratified vermiculite and method of producing moulding material / 2474543
Present invention relates to a method of producing stratified vermiculite, which is used for heat insulation, involving the following steps: heating non-stratified hydrated vermiculite to temperature of 400-600°C for 3-7 hours.
Integrated high-temperature heat-retention material "itom" and a method for manufacture thereof / 2246465
Invention concerns manufacture of articles for heat-retention of furnace units and power equipment operated at surface temperatures up to 1100°C. Invention provides charge mixture containing, wt %: swollen vermiculite 20-60, refractory clay or kaolin 37-55, electrofilter dust 1-20, chamotte fraction below 0.063 mm 1-30, and structure-forming polyelectrolyte 3-5 (above 100%). Charge is moistened to form mass, which is aged in closed space for at least 24 h, molded into crude article, dried to residual moisture at most 5%, and fired at 1000-1100°C. Aforesaid polyelectrolyte is characterized by having carboxyl, amide, nitrile, and ester groups in polymer molecule.
Ceramic mixture for manufacturing wall materials / 2250205
Ceramic mixture comprises 70-=90% clay and 10-30% cobalt concentration tails characterized by bulk density 900 kg/m3, density 2700 kg/m3, fire resistance 1200°C, mineralogic composition including orthoclase, quartz, carbonates, clay minerals, and ferrous compounds, and following chemical analysis, wt %: SiO2 32.72, Al2O3 9.33, Fe2O3 10.00, CaO 15.47, MgO 12.01, R2O 2.30, and calcination loss 17.80.
Ceramic mass for production of acid-resistant substances / 2250884
Ceramic mass has the following composition, mass-%: clay portion of tailings of gravitation of zirconium-ilmenite ores, 40-60; pyrophyllite, 35-45 and dump overburden rock of gold field, 5-15. Ceramic mass thus prepared makes it possible to obtain acid-resistant agents possessing high frost resistance and low water absorption.
Raw mixture for making facing ceramic tile / 2258684
Invention relates to manufacturing building ceramics and can be used in making facing tiles. The raw mixture for making facing ceramic tile comprises carbon enrichment rock treated at 570-600°C, clay and slurry fraction in enrichment waste of iron ores as a fusing agent that comprises the following components, wt.-%: SiO2, 42.45; Al2O3, 14.54; CaO, 14.88; MgO, 4.52; FeO, 8.06; Fe2O3, 9.46; SO3, 0.98; R2O, 3.25; MnO, 0.49; TiO2, 0.73, and P2O5, 0,64 in the following ratio of components, wt.-%: carbon enrichment rock treated at 570-600°C, 70-90; clay, 5-20, and slurry fraction in iron ores enrichment, 5-10. Invention provides reducing shrinkage deformations, water absorption of tile and energy consumption in its manufacturing.
 Ceramic mass / 2259972
Invention relates to the composition of ceramic mass. Ceramic mass comprises light-melting clay raw, ground blast furnace ferromanganese granulated slag as a waste after cast iron smelting with the maximal size of particles 1.25 mm of the following composition, wt.-%: SiO2, 33-39; CaO, 39-42; MgO, 7-10; Al2O3, 7-10; MnO, 4-8; FeO, 0.2-0.3; S, 2.4-2.7, and the ground depleted iron-containing catalyst as a waste in manufacturing ammonia, being these components are taken in the following ratio, wt.-%: light-melting clay raw, 80-90; indicated blast furnace ferromanganese slag, 9.85-19.9, and indicated depleted iron-containing catalyst, 0.1-0.15. Invention can be used in manufacturing wall ceramics (slotted stones, among them building bricks). The proposed invention provides enhancing the compression strength, crack-resistance values in drying and improving the architecture image due to elimination of granules (tubercles) of granulated slag projecting on their surface and elimination of gray-green-like tint on color surface of articles.
 Method of preparing propping agent to perform hydraulic fracturing of formation / 2261847
In a method of preparing propping agent including grinding, hydration, molding, drying, and calcinations of raw material, the latter is natural bentonite clay containing more than 90% montmorillonite, molding of spherical granules of propping agent 200 to 400 μm and 420 to 850 μm in size involves spray drying technique and molding of granules more than 850 μm in size is accomplished using beading process, and calcinations is carried out at 600-650°C. Method is applicable for use in intensification of oil and gas inflow from producing beds.
Method of improvement of clay raw molding and drying properties / 2264364
The invention is pertaining to production of ceramic materials on the basis of clay raw and may be used, for example, for manufacture of an ordinary and facial building bricks, tiles, lining ceramic tiles, etc. The technical result is improvement of the molding properties of a ceramic mass and so increasing of the raw bricks crack resistance at drying, provision of a capability of a faultless self-acting charging and transportations of the dried semi-product. The method of improvement of molding and drying properties of the clay raw provides for addition of a technological mineral additive representing a rock consisting predominantly from minerals with the developed skeleton- cavernous porosity, drying at the temperature of 200-250°C within 2-4 hours for opening of a porous space, a comminution up to the dimensions less than 1 mm, a uniform distribution along the mass volume with the subsequent souring of the ceramic mass at the temperature of 30-40°C for no less than 24 hours.
Method of manufacture of wall ceramic articles / 2266267
Proposed method includes grinding of clay component, introduction of foam glass grits at size of grains of 0.1-5.0 mm preliminarily treated with water-repellent agent till obtaining of smooth surface, moistening and plasticizing, molding blanks by semi-dry method, drying and burning. Molding mass contains components at the following ratio, mass-%: water-repellent foam glass grits, 5-70; the remainder being clay component. Amount of water-repellent agent ranges from 0.1 to 10% of mass of grits. Molding of blanks by semi-dry molding method is performed at specific pressure of 4 Mpa. Waterproofed grits may be of egg-shaped or spherical form.
Method of manufacture of wall ceramic articles / 2266267
Proposed method includes grinding of clay component, introduction of foam glass grits at size of grains of 0.1-5.0 mm preliminarily treated with water-repellent agent till obtaining of smooth surface, moistening and plasticizing, molding blanks by semi-dry method, drying and burning. Molding mass contains components at the following ratio, mass-%: water-repellent foam glass grits, 5-70; the remainder being clay component. Amount of water-repellent agent ranges from 0.1 to 10% of mass of grits. Molding of blanks by semi-dry molding method is performed at specific pressure of 4 Mpa. Waterproofed grits may be of egg-shaped or spherical form.
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FIELD: manufacture of building materials. SUBSTANCE: invention concerns manufacture of articles for heat-retention of furnace units and power equipment operated at surface temperatures up to 1100°C. Invention provides charge mixture containing, wt %: swollen vermiculite 20-60, refractory clay or kaolin 37-55, electrofilter dust 1-20, chamotte fraction below 0.063 mm 1-30, and structure-forming polyelectrolyte 3-5 (above 100%). Charge is moistened to form mass, which is aged in closed space for at least 24 h, molded into crude article, dried to residual moisture at most 5%, and fired at 1000-1100°C. Aforesaid polyelectrolyte is characterized by having carboxyl, amide, nitrile, and ester groups in polymer molecule. EFFECT: reduced air and fire shrinkage and service deformations, raised softening point, simplified manufacture, and achieved absence of anisotropy of physicochemical and thermal characteristics with extremely low heat-conduction values. 2 cl, 1 tbl, 4 ex
The invention relates to the construction materials industry and can be used in the manufacture of products for thermal insulation of furnaces and power equipment with temperatures of up to 1100° C. Known high-temperature thermal insulation material made from a mixture described in A.S. No. 1534038 consisting of expanded vermiculite, refractory clay, waste production of electrocorundum, waste coal, in the following ratio, wt.%: exfoliated vermiculite 26-42, fire clay 24-44, waste production of electrocorundum 9-34, waste coal 8-14. Known material has a number of disadvantages - low strength, high air and firing shrinkage, leading to deformation of the products, which require machining to make products of the exact size and shape. A method of producing insulating ceramopaneley of the products described in A.S. No. 1583395, comprising preparing a clay slurry, the introduction part of the refractory filler in the amount of 25-45 parts by weight of the total content in the mass, mixing the mixture formed from exfoliated vermiculite and the remainder of the refractory filler, heated to 80-95° With, keeping weight within 1.5 to 2.0 h, molding, drying ibig, the dried crude product in an oven, preheated to a temperature of 1150° within 75-100 minutes. Disadvantages of the proposed method is expressed in its low processibility in the organization of mass production due to high moisture raw after molding, large air shrinkage of raw, high energy consumption for drying, large firing shrinkage, which leads to deformation of the products and the need for additional machining products. The closest set of features (prototype) of the present invention is a high temperature insulating material made from a mixture described in the patent of Russian Federation № 2154042 consisting of expanded vermiculite, refractory clay, electrostatic dust, bentonite and polyelectrolyte amendment to the presence in the polymer molecule a carboxyl, amide, nitrile and ester groups, in the following ratio, wt.%: exfoliated vermiculite 35-60, fire clay or kaolin 36-43, dust from electrostatic 1-20, bentonite 1-3, the polyelectrolyte structure creators of 0.3 to 0.6. Use as the dispersed refractory filler alone dust from electrostatic prone to sintering, increases volumetric shrinkage changes of items during the operating temperature (1000°). Due to the presence the Oia low-melting bentonite maximum operating temperature of the material is reduced to 1000° C. The closest set of features (prototype) for the proposed method is a production method of high-temperature insulation material described in the aforementioned patent RF № 2154042, including batching, mixing, wetting with an aqueous solution of polyelectrolyte amendment in the mixer component mass, consisting of a lightweight and dispersed refractory filler, refractory clay, processing it in the tape media, the pressing raw, drying and firing. The disadvantage of this method is the complexity of the operation of pressing the workpiece on the tape media from a mixture of exfoliated vermiculite having a high elastic aftereffect, which leads to the discontinuity of raw and receiving defective products. In addition, the products obtained by pressing on the tape media, have anisotropy of physical-mechanical properties (strength, thermal conductivity, thermal expansion), which affects the durability of products. We offer insulation material in comparison with analogues is minimal (less than 1% of the exposure for 8 hours) volume changes during temperature service, a higher temperature at which softening (>1100° (C)that improves its performance and resource characteristics in the service, and blah is odara small and uniform linear and volumetric shrinkage (air 2,0-2,4%, fire to 2.2-2.3%) no deformation occurs products in drying and after firing. This technical effect is achieved in that the heat-insulating refractory material made from a mixture comprising expanded vermiculite as a lightweight filler, refractory clay or kaolin, polyelectrolyte, the amendment to the presence in the polymer molecule a carboxyl, amide, nitrile and ester groups and dispersed refractory filler, including dust from electrostatic rotary kilns for the production of clay and the clay fraction less 0,063 mm in the following ratio, wt.%: Exfoliated vermiculite 20-60 Refractory clay or kaolin 37-55 Dust from electrostatic 1-20 The clay fraction less 0,063 mm 1-30 Polyelectrolyte structure-former 3-5 (above 100%) as the number of input polyelectrolyte amendment is 9% by weight of fireclay or kaolin. In the proposed method, in comparison with the prototype, fixed operation preliminary pressing of the workpiece tape pressure, which simplifies the forming raw, greatly reducing the number of defective workpieces that does not require the preparation and use of aqueous polyelectrolyte, creates isotropic integrated product structure in a matrix formed of refractory m the materials (refractory clay or kaolin, the clay and dust from the electrostatic precipitators), integrated particles, the lightweight filler is vermiculite, not having a directional orientation. Due to this structure eliminates the anisotropy of physical-chemical and thermo-physical properties of the products characteristic of the products have passed the stage of preliminary pressing on the tape media in which the particles of vermiculite receive orientation along the axis of extrusion. This technical result is achieved by the fact that when implementing the proposed method of production of heat-insulating refractory material including dosing, mixing and moistening in the mixer component mixture consisting of expanded vermiculite as a lightweight filler, refractory clay or kaolin and dispersed refractory filler, in the form of dust from electrostatic rotary kilns for the production of clay and the clay fraction less 0,063 mm, extrusion raw, its drying and firing, and in the preparation of mass it is added 3-5 wt.% (over 100%) powdered polyelectrolyte amendment to the presence in the polymer molecule a carboxyl, amide, nitrile and ester groups and the aging cooked mass in a closed container for at least 24 hours. Dust from the electrostatic precipitators is a waste of clay during firing of refractory clays of the kaolin in rotary kilns. It presents a spherical particle with an internal cavity partially digidratirovannogo clay mineral is kaolinite. Dust neoplastica, its chemical composition, wt.%: Al2O335,4-42,2, Fe2About31,28-is 3.08, SiO252,0-60,2, CaO 0.3 to 0.5, MgO 0.2 to 0.5, PA2O+K2About 0.1 to 0.5; weight loss during calcination of 2-8, and granulometric composition, wt.%: fraction > 200 μm 0,3-4,3, fraction of 50-200 μm 40,3-54,1, fraction of 10-50 μm to 10.5 to 14.4, the fraction of 5-10 μm, 14,3-15,5, fraction of 1-5 μm 1,3-5,8, fraction <1 μm 10,3-20,4. The use of the dust from the electrostatic allows due to the presence of an internal cavity in its particles to reduce the density of both raw and finished products than facilitates obtaining products with a low density (0.4-0.6 g/cm3) and extremely low thermal conductivity (λ =0.1 to 0.2 W/(m· K)) and high strength (σSG=1,0-2,5 N/mm2). Add in the weight of dispersed clay (particles less than 0,063 mm) contributes to the reduction of volume shrinkage (air 2,0-2,4%, the firing of about 2.2-2.3%), preserving the exact geometric shape and size of the products after drying and firing. Introduction to mass polyelectrolyte amendment in the form of dry solid powder can reduce its moisture content. Limit the number of polyelectrolyte amendment may reach 9% by weight of refractory clay (kaolin). The increase in the content of the vermiculite in the charge leads to a decrease in apparent density and strength, the increase in total content of clay and dust from the electrostatic precipitators at a constant content of vermiculite leads to higher apparent density, reduce air and firing shrinkage, increased content of refractory clay (kaolin) increases the density and strength of products. EXAMPLE 1. For the production of heat-insulating refractory materials using a mixture of the following composition, wt.%: Plastic kaolin 37 Exfoliated vermiculite 58 The clay fraction less 0,063 mm 1 Dust from the electrostatic precipitators 1 Polyelectrolyte structure-former 3 (above 100%) The proposed method consists of the following: weighting method in a predetermined ratio dosed components of the charge (refractory clay or kaolin, exfoliated vermiculite, dust from the electrostatic precipitators, the clay fraction less 0,063 mm, the polyelectrolyte structure-former), loadconsistently in the mixer (Z-shaped mixer or twin-shaft mixer) and mix thoroughly, then produce hydration water, stirred until a homogeneous granular mass which is discharged into a closed container and vylizyvaut at least 24 hours. When holding water affects the polyelectrolyte structure-former, causing swelling and plasticization, thereby increasing plastic mass properties and connectivity. After Valiev the tion of the mass of the molded product, which are dried natural or forced drying to a residual moisture content of not more than 5%, the dried product is calcined at a temperature of 1000-1100° C. EXAMPLE 2. Differs from example 1 only by the composition of the charge, wt.%: Plastic kaolin 50 Exfoliated vermiculite 48 The clay fraction less 0,063 mm 1 Dust from the electrostatic precipitators 1 Polyelectrolyte structure-former 4,5 (over 100%) EXAMPLE 3. Differs from example 1 only by the composition of the charge, wt.%: Plastic kaolin 40 Exfoliated vermiculite 20 The clay fraction less 0,063 mm 25 The dust precipitator 15 Polyelectrolyte structure-former - 4 (over 100%). EXAMPLE 4. Differs from example 1 only by the composition of the charge, wt.%: Plastic kaolin 45 Exfoliated vermiculite 25 The clay fraction less 0,063 mm 10 Dust from the electrostatic filter 20 Polyelectrolyte structure-former 4,5 (over 100%) Properties of insulating refractory materials described in examples 1-4, are shown in table 1. td align="center"> 8,68
1. Heat-insulating refractory material made from a mixture comprising expanded vermiculite, refractory clay or kaolin, polyelectrolyte, the amendment to the presence in the polymer molecule a carboxyl, amide, nitrile and ester groups and dispersed refractory filler, characterized in that the mixture contains as dispersed refractory filler dust from electrostatic rotary kilns for the production of clay and the clay fraction less 0,063 mm in the following ratio, wt.%: exfoliated vermiculite 20-60, refractory clay or kaolin 37-55, dust from electrostatic 1-20, the clay fraction less 0,063 mm 1-30, polyelectrolyte structure-former 3-5 (above 100%),/p> the amount of polyelectrolyte is 9% by weight of fireclay or kaolin. 2. Method of manufacturing heat-insulating refractory material including dosing, mixing and moistening in the mixer components of the charge: expanded vermiculite, refractory clay or kaolin and dispersed refractory filler, molding raw, its drying and firing, characterized in that in the preparation of mass is used as the dispersed refractory filler dust from electrostatic rotary kilns for the production of clay and the clay fraction less 0,063 mm and an additional 3-5 wt.% (over 100%) powdered polyelectrolyte amendment to the presence in the polymer molecule a carboxyl, amide, nitrile and ester groups, and after moistening the prepared weight vylizyvaut in closed containers for at least 24 hours
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