CN115403253A - Production process of high-strength high-temperature-resistant foam glass - Google Patents
Production process of high-strength high-temperature-resistant foam glass Download PDFInfo
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- CN115403253A CN115403253A CN202211227455.8A CN202211227455A CN115403253A CN 115403253 A CN115403253 A CN 115403253A CN 202211227455 A CN202211227455 A CN 202211227455A CN 115403253 A CN115403253 A CN 115403253A
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- 239000011494 foam glass Substances 0.000 title claims abstract description 59
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 239000011521 glass Substances 0.000 claims abstract description 45
- 239000000843 powder Substances 0.000 claims abstract description 37
- 238000001035 drying Methods 0.000 claims abstract description 33
- 239000002699 waste material Substances 0.000 claims abstract description 32
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000000498 ball milling Methods 0.000 claims abstract description 24
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 22
- 239000010431 corundum Substances 0.000 claims abstract description 22
- 239000000428 dust Substances 0.000 claims abstract description 22
- 239000004088 foaming agent Substances 0.000 claims abstract description 19
- 229910052742 iron Inorganic materials 0.000 claims abstract description 18
- 239000000203 mixture Substances 0.000 claims abstract description 18
- 239000002131 composite material Substances 0.000 claims abstract description 17
- 239000006260 foam Substances 0.000 claims abstract description 17
- 238000007873 sieving Methods 0.000 claims abstract description 17
- 238000001816 cooling Methods 0.000 claims abstract description 16
- 239000006184 cosolvent Substances 0.000 claims abstract description 16
- 238000005187 foaming Methods 0.000 claims abstract description 16
- 238000002844 melting Methods 0.000 claims abstract description 16
- 230000008018 melting Effects 0.000 claims abstract description 16
- 239000003381 stabilizer Substances 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 12
- 239000010439 graphite Substances 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 238000010791 quenching Methods 0.000 claims abstract description 8
- 230000000171 quenching effect Effects 0.000 claims abstract description 8
- 238000000137 annealing Methods 0.000 claims abstract description 7
- 238000004140 cleaning Methods 0.000 claims abstract description 6
- 239000003484 crystal nucleating agent Substances 0.000 claims abstract description 4
- 238000011049 filling Methods 0.000 claims abstract description 3
- 238000010438 heat treatment Methods 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 24
- 230000008569 process Effects 0.000 claims description 18
- 239000003795 chemical substances by application Substances 0.000 claims description 15
- 239000013078 crystal Substances 0.000 claims description 12
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 7
- 229910021538 borax Inorganic materials 0.000 claims description 7
- 239000004328 sodium tetraborate Substances 0.000 claims description 7
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 7
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 6
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 6
- 238000003723 Smelting Methods 0.000 claims description 6
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 claims description 6
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 5
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 229910004261 CaF 2 Inorganic materials 0.000 claims description 4
- 239000004567 concrete Substances 0.000 claims description 2
- 239000006121 base glass Substances 0.000 abstract description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 12
- 239000002994 raw material Substances 0.000 description 10
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 6
- 239000000292 calcium oxide Substances 0.000 description 6
- 239000011148 porous material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000005388 borosilicate glass Substances 0.000 description 3
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 3
- 229910001634 calcium fluoride Inorganic materials 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 239000006082 mold release agent Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 238000010079 rubber tapping Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000156 glass melt Substances 0.000 description 2
- 229910052909 inorganic silicate Inorganic materials 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical group O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000005373 porous glass Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910020335 Na3 PO4.12H2 O Inorganic materials 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000006063 cullet Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000004619 high density foam Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000005495 investment casting Methods 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/08—Other methods of shaping glass by foaming
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
- C03C1/002—Use of waste materials, e.g. slags
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C11/00—Multi-cellular glass ; Porous or hollow glass or glass particles
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Glass Compositions (AREA)
Abstract
The invention discloses a production process of high-strength high-temperature-resistant foam glass, which comprises the following steps: (1) Cleaning waste glass, drying, ball-milling and crushing, ball-milling and mixing waste glass powder, iron tailings, fused brown corundum dust removal powder and cosolvent, drying, sieving, filling into a graphite crucible, melting, performing water quenching treatment, drying the water quenched mixture, and crushing to obtain base glass powder; (2) Transferring the basic glass powder into a graphite crucible, sequentially adding a foaming agent, a foam stabilizer and a composite crystal nucleating agent, mixing, ball-milling and sieving to obtain a batch mixture; (3) Dripping industrial ethanol into the batch, placing the batch into a mold, paving and compacting, finally moving the mold into a foaming furnace to be sintered, finally taking the mold out of the foaming furnace, placing the mold into an annealing furnace, and cooling to below 50 ℃ to obtain foam glass; the production process is simple and feasible, and the produced glass has light weight, good strength and high temperature resistance, and can effectively prolong the service life.
Description
Technical Field
The invention relates to a production process of foam glass, in particular to a production process of high-strength high-temperature-resistant foam glass.
Background
The foam glass is heat-insulating glass with porosity of over 90% and homogeneous pores. Because the pore structure of the borosilicate glass has the physical property of borosilicate, the borosilicate glass has the characteristics of air impermeability, no combustion, no deformation, no deterioration, no food pollution and the like when used as a heat insulation material, and therefore, the borosilicate glass is not only used as an indoor and outdoor incombustible heat insulation material, but also used for food freezing fermentation and brewing equipment, a buoy of a liquid level meter and the like.
The foam glass is a porous glass material which is formed by taking waste flat glass and bottle glass as main raw materials, adding a foaming agent, a modifier, a fluxing agent and the like, uniformly mixing by ball milling to form a batch, and then putting the batch in a specific grinding tool to carry out processes of foaming, annealing and the like, wherein countless uniform bubbles are filled in the porous glass material; however, the currently prepared foam glass has the defects of heavy weight, high energy consumption, high cost, poor strength, no high temperature resistance during use and poor usability; patent CN101302077B provides a method for directly producing foam glass by using slag from a liquid slag tapping furnace, wherein cullet or calcium oxide powder is added into the slag tapping furnace, and the physical sensible heat and effective chemical composition of a silicate solution discharged from the slag tapping furnace are utilized, so that the energy consumption is low, the cost is low, but the strength performance of the foam glass is not improved; patent CN101014461A discloses a firm high density foam glass with small pore size, the pore size of the prepared sample is 0.3-1 mm, the density is less than 100 pounds per cubic foot (about 1.6g/cm 3), the foam glass prepared by the method has small pore size and low breaking strength; patent CN105417958B provides a method for preparing a high strength foam glass material using copper tailings, which improves strength, but has poor performance at high temperature and cannot resist high temperature; patent CN200946127Y discloses a foam glass clamped with a wire mesh, which solves the problems that the foam glass has low mechanical strength, cannot produce large-format products, has complicated use procedures, and is difficult to ensure construction quality and effect; however, the foam glass with the metal wire is difficult to cut and process, the construction operation is complicated, and the problem of high temperature resistance is solved; therefore, the development of a foam glass capable of overcoming the above-mentioned drawbacks has become a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to solve the technical problem that the production process of the high-strength high-temperature-resistant foam glass is simple and feasible, and the produced glass has light weight, better strength and high temperature resistance and can effectively prolong the service life.
The technical scheme for solving the technical problems is as follows:
a production process of high-strength high-temperature-resistant foam glass specifically comprises the following steps:
(1) Cleaning waste glass, drying, ball-milling and crushing the waste glass, ball-milling and mixing waste glass powder, iron tailings, electric smelting brown corundum dust removal powder and cosolvent, drying, sieving, filling into a graphite crucible, melting, performing water quenching treatment after melting, drying the water quenched mixture in a rotary drying furnace, and crushing to obtain basic glass powder;
(2) Taking base glass powder, sieving with a 220-mesh sieve, transferring into a graphite crucible, sequentially adding a foaming agent, a foam stabilizer and a composite crystal nucleating agent, mechanically stirring for 20min to uniformly mix, adding into a ball-milling tank, ball-milling for 20-40min, and sieving with a 250-mesh standard sieve to obtain a batch;
(3) Dripping industrial ethanol into the batch, putting the batch into a mould, paving and compacting, wherein the paving thickness is 5-8 cm, and finally, moving the mould into a foaming furnace to be sintered, wherein the concrete steps are as follows:
heating to 800-850 ℃ from 700 ℃ at a heating rate of 5-8 ℃/min, and keeping the temperature for 10-30min;
then heating to 850-900 ℃ at the heating rate of 15-25 ℃/min, and preserving heat for 20-30min;
and finally, taking the mold out of the foaming furnace, putting the mold into an annealing furnace at the temperature of 600 ℃, preserving heat for 30min, and cooling to the temperature below 50 ℃ at the cooling speed of 1-2 ℃/min to obtain the foam glass.
The invention further defines the technical scheme as follows:
in the production process of the high-strength high-temperature-resistant foam glass, the foam glass comprises the following components in percentage by mass: 10-13% of iron tailings, and fused brown corundum dust removal powder: 20-30%, cosolvent: 3-6%, foaming agent: 1-2%, foam stabilizer: 4-6%, composite crystal nucleus agent: 5-7 percent of waste glass, and the balance of waste glass, wherein the sum of the components is 100 percent.
In the production process of the high-strength high-temperature-resistant foam glass, the foaming agent is Si mixed in equal proportion 3 N 4 、MnO 2 And borax.
The technical effects that manganese dioxide 2MnO2=2MnO + O2 is used for releasing oxygen to increase oxygen content, the oxidation effect of Si3N4 is enhanced, the firing temperature is reduced, the reaction time is shortened, the connection of the pore wall is reduced, the strength of the prepared foam glass is improved, B2O3 is generated when borax is decomposed, B has a net forming effect, a [ BO4] tetrahedron and a [ SiO4] tetrahedron are formed in a glass body to form a network structure, the broken small [ SiO4] tetrahedron is repaired, the network connection degree is increased, the polymerization degree of the melt is improved, the viscosity of the glass melt is correspondingly improved, and the effect of stable foaming is achieved by delaying the thinning rate of the foaming wall; the foaming agent adopted by the invention is a mixture of Si3N4, mnO2 and borax, and the three foaming agents are added in a compounding way, so that advantages and disadvantages are raised, uniform and continuous generation of gas is ensured, and a product with good performance is prepared.
In the production process of the high-strength high-temperature-resistant foam glass, the cosolvent is Na 2 B 4 O 7· 5H 2 O or barium carbonate; the foam stabilizer is Na 3 PO 4· 12H 2 O or iron oxide.
In the production process of the high-strength high-temperature-resistant foam glass, the composite crystal nucleating agent is TiO 2 And CaF 2 In mass ratio of TiO 2 ：CaF 2 =2:1。
In the production process of the high-strength high-temperature-resistant foam glass, the water quenching in the step (1) is followed by drying in a rotary drying furnace, and the production process specifically comprises the following steps: heating from room temperature to 120 ℃ at a heating rate of 3-5 ℃/min, rotating at a rotating speed of 20-30 rpm, keeping the temperature for 2-4h, and cooling to room temperature.
In the production process of the high-strength high-temperature-resistant foam glass, the heating rate is controlled to be 10-12 ℃/min during melting, and the temperature is kept for 1.5h at 1200-1300 ℃.
In the production process of the high-strength high-temperature-resistant foam glass, the chemical component of the waste glass raw material is specifically Al 2 O 3 :1-2%，Fe 2 O 3 :4-6%，CaO：5-7%，MgO：2-4%，Na 2 O:6-8%, mnO:0.4-0.8%, and SiO in balance 2 The sum of the above components is 100%.
In the production process of the high-strength high-temperature-resistant foam glass, the fire resistance of the mold is higher than 1200 ℃, and the mold release agent is coated on the inner wall of the mold in the using process.
The beneficial effects of the invention are:
china is a large country for producing electro-fused brown corundum, and the electro-fused brown corundum has the characteristics of high temperature resistance, corrosion resistance, high hardness, good toughness and the like, so that the electro-fused brown corundum is widely applied to the aspects of grinding tool grinding materials, refractory materials, sand blasting, carborundum wear-resistant terraces, precision casting formwork manufacturing and the like. The brown corundum is produced by using high-alumina bauxite as a raw material, using high-quality anthracite and scrap iron as main ingredients, smelting at a high temperature of more than 2000 ℃ in an electric arc furnace, collecting smoke dust generated in the high-temperature smelting process through a dust collector, and the dust is called as electric smelting brown corundum dust removal powder, wherein the electric smelting brown corundum is produced by about 300 ten thousand tons every year in China, and the generated dust is 21 ten thousand tons every year according to the calculation of 7% of dust amount. The research on the substances of the fused brown corundum dust removal powder shows that: the main component of which is Al 2 O 3 、SiO 2 And K 2 O, fe, mn, ca, mg, ti and Ga as minor components, siO contained in the fused brown corundum dust-removing powder 2 The action is equivalent to the glass powder net forming action, while Al 2 O 3 In the presence of a modifier, K, which regulates the viscosity of the glass melt 2 O、Fe 2 O 3 CaO, mgO and TiO 2 The impurity components play the role of fluxing agent; the particle size of the electro-fused brown corundum dust removal powder is in the micron order, the electro-fused brown corundum dust removal powder can be directly used as a preparation raw material of foam glass without processing, the electro-fused brown corundum dust removal powder is used as a preparation raw material of the foam glass, and the addition of dust is beneficial to the foam glassThe heat resistance and the mechanical property of the glass are improved, and the compressive strength of the glass reaches 35-40MPa.
The invention adopts a high-temperature furnace-entering foaming process, reduces the preparation time of the foam glass by 30-50%, and reduces the volatilization of raw materials.
The invention is not only beneficial to waste utilization and environmental protection, but also the prepared foam glass has small density, high strength, high temperature resistance, low heat conductivity coefficient, simple preparation process and simple and convenient construction operation. Therefore, the invention not only can effectively protect the environment and change waste into valuable, but also can absorb the explosion energy and reduce the loss of human bodies and property caused by the collapse of wall building materials due to strike or natural disasters. The composite material can be widely used in building environments such as wall materials or seabed and the like, such as pressure resistance, heat resistance, corrosion resistance, bending resistance and the like. Has obvious economic benefit and environmental protection benefit and wide application prospect.
The process system of the invention is simple and feasible, and the raw materials are low in cost, thus being beneficial to the industrial mass production of the foam glass product.
Detailed Description
Example 1
The embodiment provides a production process of high-strength high-temperature-resistant foam glass, which specifically comprises the following steps:
(1) Cleaning waste glass, drying, ball-milling and crushing the waste glass, ball-milling and mixing the waste glass powder, iron tailings, electric melting brown corundum dust removal powder and cosolvent, drying, sieving and then putting into a graphite crucible, controlling the heating rate to be 10 ℃/min during melting, keeping the temperature at 1200 ℃ for 1.5h, carrying out water quenching treatment after melting, putting the water-quenched mixture into a rotary drying furnace for drying, wherein the drying specifically comprises the following steps: heating from room temperature to 120 ℃ at a heating rate of 3 ℃/min, rotating at a rotating speed of 30 revolutions per minute, keeping the temperature for 2 hours, cooling to room temperature to finish drying, and then crushing to obtain base glass powder;
the foaming agent is Si3N4, mnO2 and borax which are mixed in equal proportion;
the cosolvent is Na2B4O 7.5H 2O; the foam stabilizer is Na3 PO4.12H2O;
the composite crystal nucleus agent is a mixture of TiO2 and CaF2, and the mass ratio of TiO2: caF2= 2;
(2) Taking basic glass powder, sieving with a 220-mesh sieve, transferring into a graphite crucible, sequentially adding a foaming agent, a foam stabilizer and a composite crystal nucleus agent, mechanically stirring for 20min to mix uniformly, adding into a ball milling tank, ball milling for 20min, and sieving with a 250-mesh standard sieve to obtain a batch;
(3) Industrial ethanol is dripped into the batch, the batch is placed into a mold to be paved and compacted, the refractoriness of the mold is higher than 1200 ℃, the mold release agent is coated on the inner wall of the mold in the using process, the paving thickness is 5cm, and finally the mold is moved into a foaming furnace to be sintered, wherein the method specifically comprises the following steps:
heating to 800 ℃ from 700 ℃ at a heating rate of 5 ℃/min, and keeping the temperature for 30min;
then heating to 850 ℃ at the heating rate of 15 ℃/min, and preserving heat for 30min;
and finally, taking the mold out of the foaming furnace, putting the mold into an annealing furnace at the temperature of 600 ℃, preserving heat for 30min, and cooling to the temperature below 50 ℃ at the cooling speed of 1 ℃/min to obtain the foam glass.
In this example, the foam glass is, in mass percent: 10% of iron tailings, and fused brown corundum dust removal powder: 30%, cosolvent: 3%, foaming agent: 2%, foam stabilizer: 4%, composite crystal nucleator: 7 percent, the balance being waste glass, and the sum of the components is 100 percent.
In this example, the chemical composition of the waste glass raw material is specifically Al 2 O 3 :1%，Fe 2 O 3 :6%，CaO：5%，MgO：4%，Na 2 O:6%, mnO:0.8 percent, and the balance of SiO 2 The sum of the above components is 100%.
Example 2
The embodiment provides a production process of high-strength high-temperature-resistant foam glass, which specifically comprises the following steps:
(1) Cleaning waste glass, drying, ball-milling and crushing the waste glass, ball-milling and mixing the waste glass powder, iron tailings, electric melting brown corundum dust removal powder and cosolvent, drying, sieving and then putting into a graphite crucible, controlling the heating rate to be 12 ℃/min during melting, keeping the temperature at 1300 ℃ for 1.5h, carrying out water quenching treatment after melting, putting the water-quenched mixture into a rotary drying furnace for drying, wherein the drying specifically comprises the following steps: heating from room temperature to 120 ℃ at a heating rate of 5 ℃/min, rotating at a rotating speed of 20 revolutions per minute, keeping the temperature for 4 hours, cooling to room temperature to complete drying, and then crushing to obtain base glass powder;
the foaming agent is Si3N4, mnO2 and borax which are mixed in equal proportion;
the cosolvent is barium carbonate; the foam stabilizer is ferric oxide;
the composite crystal nucleus agent is a mixture of TiO2 and CaF2, and the mass ratio of TiO2: caF2= 2;
(2) Taking basic glass powder, sieving with a 220-mesh sieve, transferring into a graphite crucible, sequentially adding a foaming agent, a foam stabilizer and a composite crystal nucleus agent, mechanically stirring for 20min to mix uniformly, adding into a ball milling tank, ball milling for 40min, and sieving with a 250-mesh standard sieve to obtain a batch;
(3) Dripping industrial ethanol into the batch, putting the batch into a mold, paving and compacting, wherein the refractoriness of the mold is higher than 1200 ℃, coating a release agent on the inner wall of the mold in the using process, the paving thickness is 5cm-8cm, and finally, moving the mold into a foaming furnace to be sintered, wherein the specific steps are as follows:
heating to 850 ℃ from 700 ℃ at a heating rate of 8 ℃/min, and keeping the temperature for 10min;
then heating to 900 ℃ at the heating rate of 25 ℃/min, and preserving heat for 20min;
and finally, taking the mold out of the foaming furnace, putting the mold into an annealing furnace at the temperature of 600 ℃, preserving the heat for 30min, and cooling to the temperature below 50 ℃ at the cooling speed of 2 ℃/min to obtain the foam glass.
In this example, the foam glass is, in mass percent: 13% of iron tailings, and 13% of fused brown corundum dust removal powder: 20%, cosolvent: 6%, foaming agent: 1%, foam stabilizer: 6 percent, composite crystal nucleus agent: 5 percent, the balance being waste glass, the sum of the above components being 100 percent.
In this example, the chemical composition of the waste glass raw material is specifically Al 2 O 3 :2%，Fe 2 O 3 :4%，CaO：7%，MgO：2%，Na 2 O:8%, mnO:0.4 percent, and the balance of SiO 2 The sum of the above components is 100%.
Example 3
The embodiment provides a production process of high-strength high-temperature-resistant foam glass, which specifically comprises the following steps:
(1) Cleaning waste glass, drying, ball-milling and crushing the waste glass, ball-milling and mixing the waste glass powder, iron tailings, electric melting brown corundum dust removal powder and cosolvent, drying, sieving and then putting into a graphite crucible, controlling the heating rate to be 11 ℃/min during melting control, preserving heat for 1.5h at 1250 ℃, carrying out water quenching treatment after melting, putting the water quenched mixture into a rotary drying furnace for drying, wherein the drying specifically comprises the following steps: heating from room temperature to 120 ℃ at a heating rate of 4 ℃/min, rotating at a rotating speed of 25 revolutions per minute, keeping the temperature for 3 hours, cooling to room temperature to finish drying, and then crushing to obtain base glass powder;
the foaming agent is Si3N4, mnO2 and borax which are mixed in equal proportion;
the cosolvent is Na2B4O 7.5H 2O; the foam stabilizer is ferric oxide;
the composite crystal nucleus agent is a mixture of TiO2 and CaF2, and the mass ratio of TiO2: caF2= 2;
(2) Taking basic glass powder, sieving with a 220-mesh sieve, transferring into a graphite crucible, sequentially adding a foaming agent, a foam stabilizer and a composite crystal nucleus agent, mechanically stirring for 20min to uniformly mix, adding into a ball milling tank, performing ball milling for 30min, and sieving with a 250-mesh standard sieve to obtain a batch;
(3) Industrial ethanol is dripped into the batch, the batch is placed into a mold to be paved and compacted, the refractoriness of the mold is higher than 1200 ℃, the mold release agent is coated on the inner wall of the mold in the using process, the paving thickness is 7cm, and finally the mold is moved into a foaming furnace to be sintered, wherein the method specifically comprises the following steps:
heating to 830 ℃ from 700 ℃ at a heating rate of 7 ℃/min, and keeping the temperature for 20min;
then heating to 870 ℃ at the heating rate of 20 ℃/min, and keeping the temperature for 25min;
and finally, taking the mold out of the foaming furnace, putting the mold into an annealing furnace at the temperature of 600 ℃, preserving heat for 30min, and cooling to the temperature below 50 ℃ at the cooling speed of 2 ℃/min to obtain the foam glass.
In this example, the foam glass is, in mass percent: 12% of iron tailings, and fused brown corundum dust removal powder: 25%, co-solvent: 4%, foaming agent: 1% and foam stabilizer: 5%, composite crystal nucleus agent: 6 percent, the balance being waste glass, the sum of the above components being 100 percent.
In this example, the chemical composition of the waste glass raw material is specifically Al 2 O 3 :1%，Fe 2 O 3 :5%，CaO：6，MgO：3%，Na 2 O:7%, mnO:0.6 percent, and the balance of SiO 2 The sum of the above components is 100%.
Testing the foam glass according to the industry standard, wherein the specific data are shown in table 1;
TABLE 1 foam glass test data
| Compressive strength/MPa | Volume water absorption (%) | Void fraction/(%) | |
| Example 1 | 59.7 | 1.24 | 87% |
| Example 2 | 63.2 | 1.15 | 88% |
| Example 3 | 62.1 | 1.32 | 86% |
As can be seen from the data in the table above, the foam glass prepared by the experiment has high compressive strength and high total porosity, and the volume water absorption of the foam glass is much higher than that of ZW300 in the prior art.
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (9)
1. The production process of the high-strength high-temperature-resistant foam glass is characterized by comprising the following steps of:
(1) Cleaning waste glass, drying, ball-milling and crushing the waste glass, ball-milling and mixing waste glass powder, iron tailings, electric smelting brown corundum dust removal powder and cosolvent, drying, sieving, filling into a graphite crucible, melting, performing water quenching treatment after melting, drying the water quenched mixture in a rotary drying furnace, and crushing to obtain basic glass powder;
(2) Taking basic glass powder, sieving with a 220-mesh sieve, transferring into a graphite crucible, sequentially adding a foaming agent, a foam stabilizer and a composite crystal nucleus agent, mechanically stirring for 20min to mix uniformly, adding into a ball milling tank, ball milling for 20-40min, and sieving with a 250-mesh standard sieve to obtain a batch;
(3) Dripping industrial ethanol into the batch, putting the batch into a mould, paving and compacting, wherein the paving thickness is 5-8 cm, and finally, moving the mould into a foaming furnace to be sintered, wherein the concrete steps are as follows:
heating to 800-850 ℃ from 700 ℃ at a heating rate of 5-8 ℃/min, and keeping the temperature for 10-30min;
then heating to 850-900 ℃ at the heating rate of 15-25 ℃/min, and preserving heat for 20-30min;
and finally, taking the mold out of the foaming furnace, putting the mold into an annealing furnace at the temperature of 600 ℃, preserving heat for 30min, and cooling to the temperature below 50 ℃ at the cooling speed of 1-2 ℃/min to obtain the foam glass.
2. The process for producing a high-strength high-temperature-resistant foam glass as claimed in claim 1, wherein: the foam glass comprises the following components in percentage by mass: 10-13% of iron tailings, and fused brown corundum dust removal powder: 20-30%, cosolvent: 3-6%, foaming agent: 1-2%, foam stabilizer: 4-6%, composite crystal nucleus agent: 5-7 percent of waste glass, and the balance of waste glass, wherein the sum of the components is 100 percent.
3. The process for producing a high-strength high-temperature-resistant foam glass according to claim 1, wherein: the foaming agent is Si3N4, mnO2 and borax which are mixed in equal proportion.
4. The process for producing a high-strength high-temperature-resistant foam glass as claimed in claim 1, wherein: the cosolvent is Na 2 B 4 O 7· 5H 2 O or barium carbonate; the foam stabilizer is Na 3 PO 4· 12H 2 O or iron oxide.
5. The process for producing a high-strength high-temperature-resistant foam glass as claimed in claim 1, wherein: the composite crystal nucleating agent is TiO 2 And CaF 2 In mass ratio of TiO 2 ：CaF 2 =2:1。
6. The process for producing a high-strength high-temperature-resistant foam glass according to claim 1, wherein: drying in a rotary drying furnace after water quenching in the step (1) specifically comprises the following steps: heating from room temperature to 120 ℃ at a heating rate of 3-5 ℃/min, rotating at a rotating speed of 20-30 rpm, keeping the temperature for 2-4h, and cooling to room temperature.
7. The process for producing a high-strength high-temperature-resistant foam glass as claimed in claim 1, wherein: controlling the heating rate to be 10-12 ℃/min during melting, and keeping the temperature at 1200-1300 ℃ for 1.5h.
8. The process for producing a high-strength high-temperature-resistant foam glass according to claim 1, wherein: the waste glass raw materialThe chemical composition of (A) is specifically Al 2 O 3 :1-2%，Fe 2 O 3 :4-6%，CaO：5-7%，MgO：2-4%，Na 2 O:6-8%, mnO:0.4 to 0.8 percent, and the balance of SiO 2 The sum of the above components is 100%.
9. The process for producing a high-strength high-temperature-resistant foam glass according to claim 1, wherein: the refractoriness of the mould is higher than 1200 ℃, and the inner wall of the mould is coated with a release agent in the using process.
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Effective date of registration: 20240109 Address after: 224100 Building 1, No. 1, Dehe Road, Dafeng District, Yancheng City, Jiangsu Province Patentee after: JIANGSU DEHE COLD INSULATION TECHNOLOGY Co.,Ltd. Patentee after: SHANGHAI JIANKE TECHNICAL ASSESSMENT OF CONSTRUCTION Co.,Ltd. Address before: 224100 Building 1, No. 1, Dehe Road, Dafeng District, Yancheng City, Jiangsu Province Patentee before: JIANGSU DEHE COLD INSULATION TECHNOLOGY Co.,Ltd. |