797 results about "Foam glass" patented technology

Submerged combustion systems and methods of use to produce foamed glass. One system includes a submerged combustion melter having an outlet, the melter configured to produce an initial foamy molten glass having a density and comprising bubbles filled primarily with combustion product gases. The initial foamy molten glass is deposited directly onto or into a transport apparatus that transports the initial foamy molten glass to a downstream processing apparatus. An intermediate stage may be included between the melter and the transport apparatus. One intermediate stage is a channel that includes gas injectors. Another intermediate stage is a channel that produces an upper flow of a less dense glass and a relatively more dense glass lower flow. The upper flow may be processed into foamed glass products, while the more dense flow may be processed into dense glass products.

The invention relates to a method for preparing borosilicate foam glass, comprising the following steps: glass raw materials, foaming agent and blowing promoter are finely ground and evenly mixed to form batch mixture; the batch mixture is placed in a heat resistant mould; the batch mixture is prepared into multiaperture glass materials after the processes of preheating, sintering, frothing, annealing and the like; the method is characterized in that the chemical composition(wt%) of the glass materials is: SiO2: 55-78, B2O3: 0.5-25, Al2O3: 2-8, Li2O: 0.1-0.5, Na2O: 5-14, K2O: 0.5-6.5, MgO: 1-5, CaO: 3-8, BaO: 0-3, TiO2: 0.5-4, SO3: 0.02-0.45, Fe2O3: 0.2-1.0, MnO2: 0-2.5. the glass material belongs to the system of borosilicate glass and can be prepared into foam glass product featuring good acid fastness, good thermal shock stability, high mechanical strength, good scour resistance, low heat conducting coefficient and even aerated structure by adopting carbon blowing agents(carbon black, graphite, carborundum) and blowing promoter material.

The invention provides a method adopting the blast-furnace slag containing titanium to prepare foam glass, belonging to the metallurgy source comprehensive utilization and material preparation filed. The invention mainly adopts the blast-furnace slag containing 14 to 29 percent of TiO2 as the basic material, and properly adopts silicon materials to generate glass substances, and then adds foaming agent, foam stabilizer and fusing assistant to prepare foam glass-ceramic according to a special heat disposal system. The invention has the advantages that the manufacturing cost is low; the product quality is better; the manufacturing operation is simple; the second-time contamination can be avoided and the product volume density is low, etc.

Methods and systems for controlling bubble size and bubble decay rate of glass foams formed during submerged combustion melting. Flowing a molten mass of foamed glass comprising molten glass and bubbles entrained therein into an apparatus downstream of a submerged combustion melter. The downstream apparatus has a floor, a roof, and a sidewall structure connecting the floor and roof. The foamed glass has glass foam of glass foam bubbles on its top surface, and the downstream apparatus defines a space for a gaseous atmosphere above and in contact with the glass foam. The downstream apparatus includes heating components to heat or maintain temperature of the foamed glass. Adjusting composition of the atmosphere above the glass foam, and/or contacting the foam with a liquid or solid composition controls bubble size of the glass foam bubbles, and/or foam decay rate.

The invention discloses a foam glass and a preparation method thereof. The main technique steps are that fly ash and waste glass are mixed and rubbed; the promoters composited by calcium carbonate, potassium nitrate, sodium nitrate, sodium carbonate, lithium carbonate, water glass and fibrin are added; the powder that has been rubbed into mould to mold is put; shaped product is sent to kiln to be dried and fired under high temperature, is annealed and finally cut, after the steps, the foam glass is made. The preparation technique is simple, and the production cost is reduced by choosing fly ash and waste glass instead of pearl rock, pumice, isinglass and other non-mine material, and the technique improves the use of solid wastes and is beneficial to environment protection.

A strong, high density foam glass tile having a small pore size which can be used as a facade on both exterior and interior building walls. The foam glass tile of the present invention is strong enough that it can also be used as a structural member for a building. The foam glass tiles are very strong, and have a compression strength of 6000 psi (lb./sq. in.) or greater, and more particularly of 8000 lb./sq. in. or greater, and even more particularly of 10,000 lb./sq. in. or greater, and even more particularly of 12,000 lb./sq. in. or greater, and even more particularly of 14,000 lb./sq. in. or greater. These foam glass tiles will absorb more energy from an explosion, withstand higher heat and wind loading and other mechanical forces. The tiles of the present invention may have an average pore size of 1.0 mm or less, and preferably 0.7 mm or less, and more preferably 0.6 mm or less, and even more preferably 0.5 mm or less, and even more preferably 0.4 mm or less, and even more preferably 0.3 mm or less. The density of the foam glass tile of the present invention is increased from the commercially recommended density of 9.5 lb./cu. ft. to have a higher density of between 30-100 lb./cu. ft., and more particularly greater than 40 lb./cu. ft., and even more particularly greater than 50 lb./cu. ft. and even more particularly greater than 60 lb.cu. ft. The weight of the foam glass tile of the present invention is over 10 lbs., and more particularly over 20 lbs., and even more particularly over 30 lbs., and more particularly 35 lbs. or greater, and even more particularly 40 lbs. or greater, and even more particularly 50 lbs. or greater, and even more particularly 65 lbs. or greater, and even more particularly 100 lbs. or greater. The tile of the present invention may also have a closed pore structure.

The construction process includes the steps of: base wall treatment, brushing interface mortar, scribing, constructing the heat insulating layer and leveling, painting the first layer of anti-cracking polymer mortar, spreading galvanized steel wire net and anchoring expanding bolt, painting the second layer of anti-cracking polymer mortar, adhering the facing tile and pointing joint. The galvanized steel wire net is fixed with special anchoring expansion bolts. The base wall may be reinforced concrete wall, solid brick wall, hollow brick wall, porous brick wall, air-entraining concrete block wall, etc. The heat insulating layer may be polystyrene particle layer, foamed polyurethane layer, foamed glass layer, polystyrene board, etc. The present invention makes it possible to apply heat insulting facing tile to various building wall, including wall of less compactness material.

The invention discloses a method for preparing microcrystalline foam glass by using high titanium blast furnace slag and waste glass powder. The method comprises the following steps: grinding the high titanium blast furnace slag and waste glass powder, uniformly and fully mixing the high titanium blast furnace slag, the waste glass powder, a fluxing agent, a foaming agent and a foam stabilizer, pressing into a block, adding the mixture block into a heating device and preparing the microcrystalline foam glass at a low temperature according to a specific heat treatment process by using a one-step sintering method. According to the characteristic that the high titanium blast furnace slag which is rich in TiO2 can serve as a nucleation agent, the low-melting-point waste glass powder serves as a silicious raw material, a proper amount of corresponding fluxing agent and sintering process are matched, the preparation temperature is greatly reduced, and the preparation can be finished through one-step sintering; and therefore, the energy consumption can be reduced, the process is simplified, the cycle is shortened, the cost is saved, the product which is uniform in cells, moderate in cell diameter, low in volume density, low in water absorption rate, good in thermal insulation effect and high in mechanical strength can be obtained, and the additional value of high titanium blast furnace slag utilization is improved.

The invention relates to raw materials for producing foam glass and a method for applying the same to produce the foam glass. The compositions by weight portion of the raw materials are: 380 to 580 portions of quartz sand, 105 to 250 portions of potassium feldspar, 130 to 270 portions of albite, 115 to 200 portions of dolomite, 5 to 25 portions of calcite, 150 to 250 portions of calcined soda, 0.5 to 30 portions of glauber salt, 1.0 to 12 portions of magnesium carbonate and 1.0 to 8.5 percent of potassium carbonate. The method comprises the following steps that: firstly, various raw material compositions are mixed into uniform glass mixture; secondly, the glass mixture is melted and cooled into cullet; thirdly, ball milling, foaming and annealing of the cullet are performed, and then foam glass is obtained. The method can automatically control and adjust the chemical compositions of the glass and add various functional compositions as required to meet the demand of producing the foam glass with different performances by adoption of common mineral and chemical raw materials of the natural world.

The invention relates to a method for preparing a microcrystalline porous foam glass tube. The method comprises the following steps of: firstly, preparing base glass, and obtaining base glass powder by mixing, melting, cooling and crushing; then preparing a microcrystalline porous foam glass raw material; then filling the raw material into a mold for molding; and finally, firing to obtain the microcrystalline foam glass tube. The method can prepare porous foam microcrystalline glass tube with light weight, heat preservation, abrasion resistance, corrosion resistance and high strength. The tube may have different colors and can be optionally cut and machined into needed tube components.

A large, high density foam glass tile which can be used as a facade on both exterior and interior building walls. The foam glass tile can also be used with other materials to form a panel or a composite. The present invention may be used on the critical surfaces of buildings at high risk for terrorist attacks, in combination with cement, steel or other high strength building materials. The present invention may also be used in surfaces of typical buildings. The present invention has the advantage of absorbing a substantial portion of a shock wave caused by an explosion. The present invention also has the advantage of being more resistant to earthquakes.

Improved foam glass products prepared from natural glasses, such as unexpanded fine perlite ore and expanded fine perlite, methods of producing the improved foam glass products, and methods of use thereof are provided. The improved foam glass product made from natural glasses has, for example, a thermal conductivity less than 0.70 Btu.in/hr.F.ft² (0.101 W/m° K) at 73° F.(296° K), a compressive strength greater than 100 PSI (689 kPa) and a density less than 20 lb/ft³ (320 kg/m³). The improved foam glass product made from natural glasses may be used in a variety of applications including thermal and acoustic insulation applications.

The invention provides a method for preparing foam glass by utilization of titaniferous blast furnace slag, belonging to the metallurgical resource comprehensive utilization and material preparation field. The method mainly is to take the blast furnace slag containing 14 to 29 percent of TiO2 as base material, to adequately introduce silicious raw materials to generate vitreous substances, to add foaming agent, foam stabilizer and fluxing agent, and to prepare the foam glass with a specified heat treatment system. The method solves the problems that the prior titaniferous blast furnace slag is difficult to utilize and process and the utilization rate of the titaniferous blast furnace slag in the material preparation field is low, not only creates a novel path for utilization of the titaniferous blast furnace slag but also finds very cheap raw materials for production, and has the advantages of low production cost, good product quality, simple production operation, no secondary pollution and so on.

The invention relates to a micro-pore foaming glass pumice stone, which is characterized by being prepared by carrying out high-temperature heating and foaming, and cooling on a foaming mixture of components according to weight percentage of 85-95 of waste glass grains, 1-10 of marble powder and 1-10 of quick lime. The diameter of a micro-pore of the micro-pore foaming glass pumice stone is 0.23-5mm. The invention further relates to a preparation method of the micro-pore foaming glass pumice stone. The micro-pore foaming glass pumice stone is obtained by regenerating and utilizing waste glass and is a novel material; and the micro-pore foaming glass pumice stone has the advantages of no pollution, light weight, water permeability, water-retaining property, ventilation, fire resistance (non-combustibility and fireproof property), heat insulation property and long-period effectiveness.

The invention relates to a preparation method for high-intensity foam glass. Broken glass powder, CaCO3, borax, NaNO3 and flame-resistant fiber are added in a mill pot to be milled and mixed evenly; then the mixture is put in a mould and moved into a foaming furnace for preheating, foaming, foam stabilizing, quick cooling and annealing so as to obtain the foam glass. High-intensity fiber with high flame resistance is added to the foam glass, which is in favor of improving the mechanical property of the foam glass. Therefore, the foam glass prepared by the invention has high mechanical intensity, wider range of application than that of common foam glass and long service life. The foam glass can be combined with cement, steel or other high-intensity construction materials and has the advantages of durability and rigid structure. The foam glass can absorb the main part of explosion energy when facing shock wave.

The invention provides methods for producing foamed glass and the compositions obtained thereby. The compositions are suitable for stable storage of a wide variety of substances, particularly biological and pharmaceutical.

The invention relates to a low-temperature foam glass thermal insulation material and a preparation method thereof, and the foam glass thermal insulation material comprises the following components by mass fraction: 40-80% of SiO2, 0-16% of B2O3, 0-10% of Al2O3, and 10-40% of R2O, wherein R2O is alkali metal oxide; the preparation method comprises the following steps: (1) well mixing water glass with one or more than one of boron-containing raw materials, aluminium-containing raw materials, and an alkali of ROH under stirring so as to obtain a sol system without gelation; (2) drying the sol system to obtain an intermediate material with a water content of 25-50%; (3) performing fragmentation processing of the obtained intermediate material, and then performing foaming heat treatment under a closed condition. The low-temperature foam glass of the invention has good mechanical strength, low water absorption, and a small coefficient of heat conductivity, and can be used as an excellent thermal insulation material; the preparation technology of the invention is simple in process, low in cost, energy saving and environment-friendly, and applicable to industrial production.

The invention discloses a ceiling with an indoor air purification function comprising a heat-insulating and noise-reducing layer (1), a contaminant absorption layer (2) and an air purifying layer (3) sequentially from interior to exterior. The heat-insulating and noise-reducing layer is a foam glass ceramic board, the contaminant absorption layer is an inorganic mineral coating with an absorption function, and the air purifying layer is a photocatalyst coating. According to the indoor ceiling with the air purification function, by means of factorial production, the foam glass ceramic board with fireproofing, heat-insulating and noise-reducing functions, the aqueous mineral coating with the function of contaminant absorption and the photocatalyst coating with the air purification function are compounded, the indoor air-purifying ceiling is obtained, and using function compounding, construction mounting component basing and construction system integration of environment-friendly building materials are realized.

The invention relates to a preparation method of foam glass particles, which comprises the following steps of: milling glass balls to 200 meshes for forming glass powder; mixing the glass powder, sodium nitrate, manganese dioxide, ferric oxide and sodium silicate to be made into mixed materials; uniformly drilling a plurality of cylindrical grooves on the surface of a foaming template to obtain the particular foaming template; uniformly injecting the mixed materials into the cylindrical grooves of the particular foaming template; firing the mixed materials in a roller kiln; and pouring out specimens from the particular foaming template to obtain foam glass particles. The invention uses a template method for producing the foam glass particles, and the prepared foam glass particles have narrow dimension distribution, uniform granularity and high production efficiency. The foam glass particles prepared according to the preparation method have good structural intensity, low water absorption rate, low heat conduction coefficient and high sealing porosity, and can be used as good thermal isolation and heat insulation materials. The preparation process has simple operation process, low cost and energy saving and environment protection effect and is applicable to industrial mass production.

The preparation method for microcrystal foam glass comprises: clearing the glass surface of waste CRT without electron gun, removing the fluorescent layer and grid to smash and grind; putting the glass powder and SiC power into a ball grinder for grinding and mixing to load into mold tool; preheating with 8Deg/min speed from room temperature to 650Deg; heating with 10~12Deg/min from 650Deg to 840~900Deg, holding for 30~40min; then, foaming and cooling with 20Deg/min speed to 550Deg, holding for 20~60min; finally, annealing slowly with 1Deg/min speed to room temperature. The product has high mechanical strength and well physical properties. This invention is benefit to environment protection.

The invention relates to a microcrystalline foam glass made by oil shale ash and a preparation method thereof. The oil shale ash is used as main material. The basic glass is made by adding a certain quantity of calcium carbonate, basic magnesium carbonate, borax and sodium carbonate to the main material, then adding foaming agent, foam stabilizer, fluxing agent. By adopting powder firing technique, the microcrystalline foam glass is made. The surface volume consistency of the glass is 875-1030 kg.m-3; absorbing capability is 8-15 percent; compressive strength is 11-23 MPa; bending strength is 10-17MPa; and heat conductive coefficient is 0.21- 0.32w(m.k)-1.The producing steps comprise the following techniques that first-time material proportioning; high temperature melting; basic glass making; second-time material proportioning; foaming; foam stabilizing; annealing, etc. The microcrystalline foam glass is a novel multi-functional material, which has remarkable meaning on improvement of the added value of oil shale rock resources and on environment protection.

The invention relates to a foam glass ceramic prepared from blast furnace hot melting slag and a preparation method of the foam glass ceramic, belonging to the field of inorganic materials. In the preparation method, steeling blast furnace hot melting slag is used as a main raw material, coal ash, borax, calcined soda, rear sorted tail ore, quartz sand and the like are respectively measured, evenly mixed and then baked into porous blocks, the porous blocks are added in a slag ladle, smelting is carried out by using the blast furnace hot melting slag, a melting material is subject to water quenching to obtain glass water quenching materials with different particle sizes; and the glass water quenching materials are dried and ball-milled, a foaming agent is added to be mixed with the dried and ball-milled glass water quenching materials, press forming or spreading forming is carried out, and then the foam glass ceramic is prepared by nucleating, crystallization and sintering. In the invention, a large amount of heat energy stored in the blast furnace hot melting slag is effectively utilized, and production cost is lowered; and the prepared foam glass ceramic has the characteristics of low thermal conductivity, small density, high temperature resistance, corrosion resistance and high compression resistance and breaking strength, has strong adaptable property on high-low temperature variation of smoke, and can be widely used as a multi-cylinder type and sleeve type lining material for discharging smoke by wet desulphurization in a heat-engine plant, thermal equipment insulation, heat-insulating materials and the like.

A prestressed, strong foam glass tile for use in construction. The prestressed, strong foam glass tiles of the present invention are capable of withstanding relatively large prestressing as a result of their relatively high compression strength. These prestressed, foam glass tiles will absorb and/or withstand more energy from an explosion, withstand higher heat and wind loading and other mechanical forces than traditional foam glass tiles. The foam glass tile of the present invention is strong enough that it can be prestressed over 1000 psi (lb./sq. in.), and more preferably over 2,000, 3,000, 4,000 and even more preferably over 5,000 psi. The prestressed, strong foam glass tiles of the present invention maybe included as part of a prestressed assembly. Said prestressed assembly may be comprised of two metal members, one or more prestressed foam glass tiles, and a tension member such as a tension bolt and/or wires.

The invention discloses a method for preparing microporous foam glass by use of waste glass, belonging to the technical field of inorganic nonmetallic material forming. The method comprises the following steps: grinding the waste glass and levigating into glass micropowder; proportionally mixing the glass micropowder with water and a dispersing agent, and performing ball milling; after the ball milling, adding certain amount of room-temperature foaming agent and stirring to prepare stable foam slurry with high solid content; adding the foam slurry into centrifugal atomization drying equipment to prepare hollow microsphere blanks; collecting the microsphere blanks and heating in a high-temperature furnace, and preserving heat so as to foam the microsphere blanks; and sintering to prepare high-quality microporous foam glass with low density, high strength and low heat coefficient, wherein the diameter of the micropores is uniform and controllable. Without adding a high-temperature foaming agent and a reducing agent, the method has a short sintering heat cycle, does not need annealing and is generally applicable to glass powder and suitable for large-scale continuous production while the cost is low.