Production line of manufacturing granulated foam glass

FIELD: construction.

SUBSTANCE: production line of manufacturing granulated foam glass comprises a feedstock hopper, a grinder, a hopper for a liquid component, granulators, a drum dryer, a vibrating screen, a hopper with a dispenser of dried granules, a hopper with a separating medium. It also comprises a rotary foaming furnace, a rotating refrigerator installed behind the foaming furnace, an accumulation bunker for foamed granules, a warehouse of finished products with two vibrating screens installed in series, each of which is equipped with two meshes and connected through granule collectors and by means of pneumatic conveyors with the hoppers for the finished products. The line additionally comprises a wet-grinding attritor connected to the hopper for a liquid component and a drying and granulation plant connected to the drying drum.

EFFECT: increasing the yield of a good product.

1 dwg

 



 

Same patents:

FIELD: metallurgy.

SUBSTANCE: furnace charge contains the following components, wt %: silica-containing opal-christobalite ore 58-65; sodium carbonate 19-25; dolomite 10-15; fusible clay 3-5. Dolomite has size of fractions 0.08-0.63 mm, and fusible clay shall contain aluminium oxide at least 20%.

EFFECT: extension of raw materials base, and reduced power consumption during process execution upon simultaneous increasing of strength of foam glass ceramic pellets.

2 cl, 2 tbl

FIELD: chemistry.

SUBSTANCE: film-forming mixture contains medical glass KHT, AB and packing glass ZT-1 in ratio of 1:1:2. Said mixture is then heated in metal moulds at a rate of 3.7°C/min and held at 815°C for 40 minutes, followed by quenching from 600°C to 400°C at a rate of 0.6°C/min and from 400°C to 50°C at a rate of 0.8°C/min.

EFFECT: high quality of the end product, low power consumption and shorter time for foaming.

4 tbl

FIELD: construction.

SUBSTANCE: useful model is aimed at expansion of fractional composition of manufactured granules, at manufacture of spherical granules, at complex mechanization of the process line for manufacture of granulated materials on the basis of siliceous rocks (diatomites, gaizes, bergmeals), and also at decrease of prime cost of granulated foam crystalline glass materials. The process line for manufacture of granulated foam crystalline glass materials comprises the mixing device consisting of the manufacture unit for mixing and forming of raw material granules and of the manufacture unit for mixing and foaming of the raw material granules, fractionation and storage of ready products. The mixing device of the process line contains receiving and working bins with batchers, storage devices, a dish-shaped granulating mixer installed on the manufacture unit for mixture and formation of the raw material granules and located downstream the mixing granulator of high-speed type, the drum rotating furnace on the manufacture unit for mixture and foaming of the raw material granules. Besides on the manufacture unit for mixing and foaming of the raw material granules, fractionation and storage of ready products the closed system of process transport and ready product sorting is provisioned which consists of the continuous pneumotransport system which includes pipelines, discharge cyclones and fans. The use of such mixing device on the process line for manufacture the granulated materials has allowed to reduce average bulk density from 210 down to 180 kg/m3. The heat conductivity coefficient has decreased by 15%. The use of complex mechanization has allowed to decrease significantly energy consumption, raw materials costs per 1 m3 of ready products, lower prime cost of ready products.

EFFECT: improvement of equipment performance, decrease of costs of the line service, improvement of environment parameters of manufacture.

FIELD: chemistry.

SUBSTANCE: broken glass is milled in ball or any other mill to specific surface 6000-20000 cm2/g. Hydroxilation of broken glass is carried out in the process of milling for 30-60 minutes. Diatomite is simultaneously milled to particle size 250-300 mcm. After that, milled diatomite separately or in mixture with milled broken glass is subjected to mechanical activation for 1-5 minutes in planar mill. After that, porophore, containing glycerol and solution of liquid glass, and water are added until plastic paste with mass humidity 15-18% is obtained. Granules are formed, dried at temperature 100-150°C to humidity 2-5%, then, burnt in furnace at temperature 750-800°C.

EFFECT: simplification of production technology.

3 ex, 2 tbl

FIELD: construction.

SUBSTANCE: blanks are formed from a composition containing a glass powder, a binder, a sodium silicate and water, by means of pressing or extrusion or casting. Blanks are previously heated at temperature of 50-100 degrees until hardening of the composition. The finished blank in the form of a unit is moulded from rectangular raw blanks of small sizes arranged in regular rows and/or layers, at the same time in a furnace the distance between blanks corresponds to 0.75-1.2 times of the linear blank size.

EFFECT: increased strength and homogeneity of large-size foamed glass, reduced rejects and minimisation of a process of mechanical treatment of foamed glass.

5 cl, 11 ex

FIELD: chemistry.

SUBSTANCE: charge for obtaining foamglass is made from finely crushed silicate glass of the following composition, wt %: SiO2 - 60-72.5; CaO - 4.5 - 7.0; MgO - 1.5-3.5; Al2O3 - 1.0-2.5; Na2O - 12.5-16.5. Glass is manufactured on the basis of trotyl production wastes. Dolomite in amount 1.5-2.2% of the total charge weight is added to glass.

EFFECT: extension of raw material base and improvement of the environment ecology due to utilisation of wastes of trotyl production.

3 tbl

FIELD: chemistry.

SUBSTANCE: charge for obtaining foam glass is made from finely crushed silicate glass of the following composition, wt %: SiO2 - 60-72.5; CaO - 4.5-7.0; MgO - 1.5-3.5; Al2O3 - 1.0-2.5; Na2O - 12.5-16.5. Glass is made on the base of trotyl and nitrobenzene production. Dolomite in an amount of 1.5-2.2% of the total charge weight is added to glass.

EFFECT: extension of the raw material base and improvement of the environment ecology.

3 tbl

FIELD: chemistry.

SUBSTANCE: method includes mixed grinding of prepared glass material, clay and a carbon gas-forming agent. Water is added to the obtained mixture and granules are formed therefrom. The granules are mixed with finely ground filings, foamed in a gas medium containing 1-3% CO at 830-850°C in a revolving furnace with inclination angle of 18-20°. After the foaming process, the granules in a pyroplastic state are moulded into a strip of a given shape. The strip is then fired at an initial temperature of 300-400°C with reduction to a final temperature of 80-90°C, cut, packed and stored.

EFFECT: simple technique, wider raw material base when producing foam glass-ceramic with improved operational properties.

8 cl, 1 dwg

FIELD: chemistry.

SUBSTANCE: cellular heat- and sound-insulating material is obtained from mixture, which includes carbon-containing gas-generating agent - soot 0.5-1 wt %, finely milled glass-like material in amount 99-99.5%, which contains more than 79% of glass-phase and from 5 to 20% quantity of crystalline phase with size of particles not less than 0.5 mcm.

EFFECT: improvement of sound-insulating characteristics and reduction of water-absorption of heat-insulating material.

1 tbl

FIELD: chemistry.

SUBSTANCE: mixture for producing foamed glass contains, wt %: liquid glass - 10-20; glycerol - 0.5-3; diatomite - 0.5-15; clay, or kaolin, or bentonite - 3-25; scrap glass - the balance.

EFFECT: low reactivity of the foamed glass.

3 tbl, 3 ex

FIELD: chemistry.

SUBSTANCE: film-forming mixture contains medical glass KHT, AB and packing glass ZT-1 in ratio of 1:1:2. Said mixture is then heated in metal moulds at a rate of 3.7°C/min and held at 815°C for 40 minutes, followed by quenching from 600°C to 400°C at a rate of 0.6°C/min and from 400°C to 50°C at a rate of 0.8°C/min.

EFFECT: high quality of the end product, low power consumption and shorter time for foaming.

4 tbl

FIELD: chemistry.

SUBSTANCE: broken glass is milled in ball or any other mill to specific surface 6000-20000 cm2/g. Hydroxilation of broken glass is carried out in the process of milling for 30-60 minutes. Diatomite is simultaneously milled to particle size 250-300 mcm. After that, milled diatomite separately or in mixture with milled broken glass is subjected to mechanical activation for 1-5 minutes in planar mill. After that, porophore, containing glycerol and solution of liquid glass, and water are added until plastic paste with mass humidity 15-18% is obtained. Granules are formed, dried at temperature 100-150°C to humidity 2-5%, then, burnt in furnace at temperature 750-800°C.

EFFECT: simplification of production technology.

3 ex, 2 tbl

FIELD: construction.

SUBSTANCE: blanks are formed from a composition containing a glass powder, a binder, a sodium silicate and water, by means of pressing or extrusion or casting. Blanks are previously heated at temperature of 50-100 degrees until hardening of the composition. The finished blank in the form of a unit is moulded from rectangular raw blanks of small sizes arranged in regular rows and/or layers, at the same time in a furnace the distance between blanks corresponds to 0.75-1.2 times of the linear blank size.

EFFECT: increased strength and homogeneity of large-size foamed glass, reduced rejects and minimisation of a process of mechanical treatment of foamed glass.

5 cl, 11 ex

FIELD: chemistry.

SUBSTANCE: method includes mixed grinding of prepared glass material, clay and a carbon gas-forming agent. Water is added to the obtained mixture and granules are formed therefrom. The granules are mixed with finely ground filings, foamed in a gas medium containing 1-3% CO at 830-850°C in a revolving furnace with inclination angle of 18-20°. After the foaming process, the granules in a pyroplastic state are moulded into a strip of a given shape. The strip is then fired at an initial temperature of 300-400°C with reduction to a final temperature of 80-90°C, cut, packed and stored.

EFFECT: simple technique, wider raw material base when producing foam glass-ceramic with improved operational properties.

8 cl, 1 dwg

FIELD: chemistry.

SUBSTANCE: foaming mixture includes medical glass XT and medical glass AB in a ratio of 4:1 and a foaming agent. Heating of a foaming mixture is carried out at a rate of 3.5°C/min. Foaming is carried out at 830°C for 45 minutes with further rapid cooling from 600 to 400°C at a rate of 0.5°C/min and from 400 to 50°C at a rate of 1.1°C/min.

EFFECT: reduction of the time for foaming, reduction of energy consumption, increased temperature resistance and strength of foam glass.

4 tbl

FIELD: metallurgy.

SUBSTANCE: charge based of ore of the following composition in wt %: SiO2 - 5.1; CaO - 0.9; Al2O3 - 5.2; MgO - 0.3; Fe2O3 - 54, MnO - 13.1; ZnO - 0.9; SrO - 0.4; P2O5 - 5.1; SO3 - 0.7; TiO2 - 0.9; Y2O3 - 0.3; ZrO2 - 0.06; BaO - 2.6; Nb2O5 - 0.9; La2O3 - 2.0; CeO2 - 3.1; Pr2O3 - 0.32; Nd2O3 - 0.97; ThO2 - 0.1, at carbon content of up to 0.5 wt % over 100%, is fused in weakly reducing medium at 1300°C SiO2/CaO ratio=5.6. Content of Na2O in ore is increased to 3 wt %. Here, the melt is separated and metal high-phosphorus iron-based melt portion is removed. Residual melt carbon content is increased to 15 wt % over 100% by coal to get strongly reducing medium. SiO2/CaO ratio is increased to 0.9 by limestone, temperature is increased to 1600°C, and fusing is performed to formation of silicon carbide. The melt is separated in metal and silicate parts. Low-phosphorus iron is removed and melt silicate part is cooled by heat shock to get porous chemically active glass enriched in rare-earth metal oxides suitable for further processing.

EFFECT: expanded sources of raw materials.

2 ex

FIELD: metallurgy.

SUBSTANCE: foaming mix is placed in metal moulds to be heated in the furnace at the rate of 3.7°C/min to 820°C with holding for 40 min with subsequent sharp cooling to 600°C at the rate of 2.0°C/min and annealing for 12 hours.

EFFECT: higher heat resistance and hardness of finished product, lower power input, accelerated annealing.

4 tbl

FIELD: construction.

SUBSTANCE: method of production of block cellular glass includes production of finely ground glass powder by means of grinding of crushed glass, addition of an expanding agent into the glass powder and a binder to produce a cellular glass mixture, granulation of the cellular glass mixture to the size of raw granules of semi-finished product 2-40 mm, foaming of a mixture of raw granules of the semi-finished product in the furnace with crushed cellular glass 0.2-20% of the mass of raw granules of the semi-finished product with production of cellular glass blocks, baking of cellular glass blocks. Raw granules of the semi-finished granules after granulation are dried at 100-450°C and sent to a hopper of temporary storage. Crushed cellular glass of 2-40 mm fraction is selected.

EFFECT: production of an environmentally safe finished product, simplified method of production, preservation of higher crack resistance of produced block cellular glass, making it possible to increase yield of solid cellular glass blocks.

1 ex, 3 cl

FIELD: chemistry.

SUBSTANCE: off-grade broken glass is crushed with obtaining the finely ground glass powder. A pore-former, coarse-pored silicagel and a binding agent are added to the glass powder with formation of a foam-glass mixture. Coarse-pored silicagel is crushed to the particle size not larger than 80 mcm. The mixture is granulated and raw granules are foamed in the furnace with obtaining granulated foam glass.

EFFECT: extension of the raw material base, simplification of the method of producing granulated foam glass with the preservation of high alkali resistance of the obtained granulated foam glass.

3 cl, 2 tbl

FIELD: construction.

SUBSTANCE: method and device for manufacture of a porous vitrified block may find application in construction for manufacturing of large-block heat insulation and wall structures and as fillers of light concretes. Previously, for instance, with the help of a mass spectrometer they determine chemical composition of granulated quartz-containing charge, and on the basis of the chemical composition they calculate petrochemical coefficient of alkalinity, then the quartz-containing charge evenly and with constant speed is supplied to the zone of heating, in which under action of thermal shock the charge granules are mixed, foamed and heated to temperature, the foaming temperature T"огн" in the zone of heating is provided in accordance with the formula T"огн"=2781.5-974.7 PAC, where PAC - petrochemical alkalinity coefficient, in the period of appearance of liquid glass phase on the surface of granules they mould a porous vitrified block, in the beginning of crystallisation the mould with filled foamed granules is removed from the heating zone, crystallisation is carried out, reducing temperature with the speed of 15-20°C/min to the sintering temperature Tsint, which is determined according to the formula Tsint=2364.3-873.4 PAC, and is maintained at the specified temperature of 10-60 minutes for fixation of the produced porous structure of the moulded block, then the block is cooled and exposed to isothermal maintenance for 8-60 minutes at baking temperature 400-650°C, afterwards the mould with the block is cooled to temperature of 70°C and taken out from the mould. To realise the method, the device comprises a thermal unit made of two reservoirs installed in series and connected to each other in the top part with a channel. In the first reservoir there is a heating zone with an orifice for supercharge of heated compressed air and/or nitrogen and inert gases. The second reservoir is made of two parts separated with a gate valve. The upper part of the second reservoir is designed to accumulate and deposit granules foamed in the first chamber, and the lower one - for mould installation. A furnace, for instance, a tunnel furnace, is installed in series with the second reservoir. The furnace is connected to the second reservoir with the help of a mechanism for extraction and feeding of the mould and comprises three serial zones. The first zone - zone of sintering of foamed granules, the second zone - zone of cooling of a porous vitrified block to temperature of glass phase baking, and the third zone - zone of cooling down to 80-70°C. All zones are connected to each other with a mechanism for movement of moulds.

EFFECT: increased efficiency and effectiveness of manufacturing of porous vitrified blocks and their improved quality.

6 cl, 1 dwg, 1 tbl, 5 ex

FIELD: manufacture of building materials.

SUBSTANCE: invention relates to building materials with low values of heat conductivity and density. Preparation of raw mix comprises stirring glass-forming components and powderlike additives containing gasifier among other components. Glass-forming component utilized is sodium and/or potassium silicate aqueous solution taken in amounts 30 to 70% and silicate-reactive additive is fine powder of broken glass. Stirring is carried out at temperature not superior to 70°C and, after stirring, resulting mix is subjected to heat treatment at temperature between 450 and 550°C for a period of time long enough to completely remove of water, including chemically bound one, after which mix is cooled and powdered.

EFFECT: improved reproducibility of homogenous fine-porous structure of glass foam containing closed pores, improved heat-engineering characteristics, and reduced cost production cost.

2 cl

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