CN1225432C - Finegrained aluminium-chromium composite fireproof materials - Google Patents
Finegrained aluminium-chromium composite fireproof materials Download PDFInfo
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- CN1225432C CN1225432C CN 200310117374 CN200310117374A CN1225432C CN 1225432 C CN1225432 C CN 1225432C CN 200310117374 CN200310117374 CN 200310117374 CN 200310117374 A CN200310117374 A CN 200310117374A CN 1225432 C CN1225432 C CN 1225432C
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- 239000002131 composite material Substances 0.000 title claims description 7
- 239000000463 material Substances 0.000 title abstract description 31
- QRRWWGNBSQSBAM-UHFFFAOYSA-N alumane;chromium Chemical compound [AlH3].[Cr] QRRWWGNBSQSBAM-UHFFFAOYSA-N 0.000 title 1
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 47
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000002994 raw material Substances 0.000 claims abstract description 29
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 25
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 3
- DNXNYEBMOSARMM-UHFFFAOYSA-N alumane;zirconium Chemical compound [AlH3].[Zr] DNXNYEBMOSARMM-UHFFFAOYSA-N 0.000 claims description 11
- 229960001866 silicon dioxide Drugs 0.000 claims description 2
- 229910052596 spinel Inorganic materials 0.000 abstract description 22
- 239000011029 spinel Substances 0.000 abstract description 22
- 239000011819 refractory material Substances 0.000 abstract description 9
- 230000004927 fusion Effects 0.000 abstract description 8
- 238000002844 melting Methods 0.000 abstract description 8
- 230000008018 melting Effects 0.000 abstract description 8
- 239000002245 particle Substances 0.000 abstract description 8
- 239000000126 substance Substances 0.000 abstract description 7
- 238000005266 casting Methods 0.000 abstract description 6
- 238000003723 Smelting Methods 0.000 abstract description 5
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 abstract description 5
- 239000013078 crystal Substances 0.000 abstract description 5
- 239000001095 magnesium carbonate Substances 0.000 abstract description 5
- 235000014380 magnesium carbonate Nutrition 0.000 abstract description 5
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 abstract description 5
- 229910000021 magnesium carbonate Inorganic materials 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 229910052726 zirconium Inorganic materials 0.000 abstract description 4
- 230000035939 shock Effects 0.000 abstract description 3
- 238000005204 segregation Methods 0.000 abstract description 2
- 239000004576 sand Substances 0.000 abstract 2
- 239000004615 ingredient Substances 0.000 abstract 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 17
- 239000011449 brick Substances 0.000 description 10
- 239000000843 powder Substances 0.000 description 8
- 239000000203 mixture Substances 0.000 description 6
- 239000004575 stone Substances 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 4
- 235000013339 cereals Nutrition 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- 239000000292 calcium oxide Substances 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000010891 electric arc Methods 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910003023 Mg-Al Inorganic materials 0.000 description 2
- 240000001949 Taraxacum officinale Species 0.000 description 2
- 235000006754 Taraxacum officinale Nutrition 0.000 description 2
- 235000005187 Taraxacum officinale ssp. officinale Nutrition 0.000 description 2
- GANNOFFDYMSBSZ-UHFFFAOYSA-N [AlH3].[Mg] Chemical compound [AlH3].[Mg] GANNOFFDYMSBSZ-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- -1 magnesium-aluminium-zirconium Chemical compound 0.000 description 2
- 239000000289 melt material Substances 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- ZGUQGPFMMTZGBQ-UHFFFAOYSA-N [Al].[Al].[Zr] Chemical compound [Al].[Al].[Zr] ZGUQGPFMMTZGBQ-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910001569 aluminium mineral Inorganic materials 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 235000011868 grain product Nutrition 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 231100000004 severe toxicity Toxicity 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Ceramic Products (AREA)
Abstract
The present invention relates to a novel refractory raw material which is used for preparing the refractory materials of periclasite and magnesite alumina spinel and AZS refractory materials in high-grade fusion casting. The present invention has the formula of 30 to 73% of desiliconizing zirconium, 27 to 70% of commercial alumina and 0 to 10% of magnesite sand, wherein in the desiliconizing zirconium, the content of the zirconia is from 85 to 92%; in the magnesite sand, the content of the magnesia is 97%; in the formula, the total content of the magnesia is from 0.2 to 10%, the total content of the silicon dioxide is from 0.5 to 1.5%, the total content of the zirconia is from 30 to 60%, the total content of the alumina is from 30 to 65%, and the size of the original crystal particle of the refractory raw material is about 2 to 4 mu m. The present invention has the main advantages of small crystal particle, moderate chemical purity, low price, high melting speed and convenient preparation. When the raw material of the present invention is used for preparing the material of periclasite and magnesite alumina spinel, the thermal shock resistance, the heat conductivity and the kiln-suspending skin performance of the prepared material can be improved obviously. When the present invention is used for preparing AZS fusion casting materials, the smelting time can be reduced, the power consumption is lowered, and the ingredient segregation is prevented.
Description
1 technical field
The present invention be used to prepare periclasite fireproof magnesia alumina spinel material and senior fusion casting azs refractory materials a kind of novel refractory raw material.
2 background technologies
2.1 periclasite dimension stone of magnesia alumina spinel
What during the magnesium chromia material uses generation contained severe toxicity, carcinogenic and serious environment pollution contains the sexavalent chrome material.Thereby periclasite-fireproof magnesia alumina spinel material is developed.
The 1st generation periclasite (M) magnesium-aluminium spinel (MA) material adds Al2O3 when brickmaking, generate MA-M matrix in conjunction with M particulate tissue by reaction in.Follow about 10% volume change because of generating MA, the performance of refractory brick is not good.The pre-synthetic MA particle of the 2nd generation spinel brick adding forms M matrix in conjunction with MA and M particulate tissue.Because of good thermal shock and alkali-free erosion and redox problem, this material has been widely used in the transitional zone of cement kiln.But because of a large amount of aluminum oxide of introducing, the 2nd generation spinel brick resistance to fouling not good.
The 3rd generation spinel brick feature be: brick includes two portions spinel.Part MA adds with pre-synthetic particle form; Another part then adds in the mode of aluminum oxide fine powder, forms MA by reaction in when burning till.Because of there being the coarse grain of MA, can forming tiny crack and improve heat-shock resistance; Because of there being MA in the matrix, thermal conductivity is lowered, and hangs kliner coating and also makes moderate progress.The lower aluminum oxide volume of the 3rd generation spinel brick usefulness has obtained heat-shock resistance and the thermal insulation that can accept reluctantly preferably, has reduced the aluminium mineral material that produces when weathering, thereby can be used as the material of main part of clinkering zone.
Yet, Cr
2O
3Can in refractory materials, can increase the wetting angle of liquid phase to fire-resistant phase, improve direct combination degree, when corroded by CaO, can improve the temperature that liquid phase occurs, can also generate the magnesia chrome spinel of low bulk, form periclasite-magnesia chrome spinel-tiny crack multiphase structure, make the magnesium chromia material have good refractoriness under load, hot strength, resistance to fouling, thermal shock resistance, lower thermal conductivity and hang kliner coating preferably.Magnesium-aluminium spinel also not exclusively possesses these advantages.So the alternative magnesium chrome refractory of the 3rd generation periclasite dimension stone of magnesia alumina spinel still is difficult to promote.
Chinese patent CN 1321620 adopts the mode of compound interpolation aluminum oxide and zirconium white micro mist to prepare the periclasite spinel refractory.The weak point of this technology is: although the calcium oxide preferential reaction of zirconium white and intrusion, because of aluminum oxide and Zirconia particles are scattered among the refractory materials independently.Zirconium white can not play the effect of the generated in-situ magnesium-aluminium spinel particle of protection effectively.
United States Patent (USP) 6261983 has used aluminium zirconium compound material when preparation periclasite dimension stone of magnesia alumina spinel.According to the 13rd of this patent, the size of aluminium zirconium compound material should be less than 150 orders (correspondingly-sized 〉=104 μ m).The major defect of this technology is: aluminium zirconium compound material is that grain-size is bigger with method of cooling production at a slow speed.As further pulverizing, just aluminum oxide-zirconic composite structure is destroyed.Add through the broken coarse-grain compound material of fine powder and and add aluminum oxide and Zirconium powder simultaneously and do not have much difference, the compound meaning that also just lost.
Chinese patent CN1413941 has narrated a kind of preparation production method of electric melting magnesium-aluminium-zirconium synthetic material: be that example contains 177～192 parts of magnesite building stones with the weight part, 4～8.2 parts of aluminum oxide powders, 2～7 parts of zirconium whites, above-mentioned each raw material is added the fusing of heating of switching in the electric arc furnace, in electric arc furnace, cooled again 24～48 hours, be frozen into piece, or the synthetic feed liquid casting of the high temperature after the melting is poured in carbon brick container or the water-cooled jar and is cooled off, it is broken to cool off caked synthetic material arena then, sorting, and grinding and processing.The compound material that this kind method is made not only crystal grain is thick, and the composition of raw material is based on magnesium oxide, and aluminum oxide closes zirconium white and only accounts on a small quantity, and it doesn't matter for this patent and present technique.
2.2 fusion casting azs refractory materials
Must add zirconium white when producing zirconia content greater than 33% fusion casting azs refractory materials.Zirconic fusing point is up to 2600 ℃.The smelting temperature of electric furnace is 1900 ℃.The lowest total of the melting point of zirconium white-aluminum oxide is 1860 ℃, and composition is 60% aluminum oxide, 40% zirconium white.The zirconium white that adds in the melting or contain the desilicated zirconia part of zirconium white more than 85% and will fuse into the molten bath; Another part will sink to the bottom, molten bath, enter the AZS melt by fusing very lentamente again.The time of melting is long, the power consumption height, and the chemical component fluctuation of product, the physical and chemical performance index is difficult to Be Controlled.
Therefore, replace zirconium white or existing desilicated zirconia will reduce smelting time and power consumption with the aluminium zirconium compound material that is easy to fuse, and stable prod composition and performance are had very big benefit.
3 summary of the invention
The objective of the invention is to prepare compact grained aluminium zirconium composite fire raw material,, perhaps accelerate the fusing speed of this raw material so that utilize this kind feedstock production clad aluminum zirconium powder body.
Desilicated zirconia contains zirconium white 85-92%, and aluminum oxide 13-6% only contains the impurity below 4%, and price also has only zirconic 30-40%.The present invention adopt desilicated zirconia be raw material to reduce cost, the impurity that utilizes desilicated zirconia to bring into simultaneously be convenient to the fusion, blow ball and make the close grain product.
Second uses the magnesium oxide of 0.2-10% as fusing assistant.Magnesium oxide is the main component of periclasite-fireproof magnesia alumina spinel material.During preparation aluminium zirconium compound material, add magnesium oxide and will help fusion greatly, blow ball and reduce power consumption, do not influence the purity of product again.
The 3rd is to adopt pressurized air to impact the melt-flow thigh of pouring out electric furnace, it is smashed into the bead of 0.5-3mm, thereby realize cooling fast, and make the close grain aluminium zirconium composite fire raw material of median size less than 5 μ m.There has been this raw material just can make size less than 88 μ m and contain aluminum oxide simultaneously and zirconic refractory materials powder, use the low powder of this price not only can improve the heat-shock resistance of refractory materials, but also will help greatly improving the periclasite dimension stone of magnesia alumina spinel resistance to fouling, hang kliner coating and heat-proof quality, thereby significantly improve the P/C ratio of material, strengthen competitiveness of product.Use this raw material will help improving the quality of output, qualification rate and product when producing the AZS melt material.
The prescription of refractory raw material of the present invention is:
Desilicated zirconia 30-73%
Commercial alumina 27-70%
Magnesia 0-10%
Wherein desilicated zirconia system is a main raw material with the zircon, add an amount of aluminum oxide, the refractory raw material that utilizes carbothermic method to make, wherein zirconic content is 85-92%, content of magnesia is 97% in the magnesia, and magnesian total content is 0.2-10% in this prescription, and the total content of silicon-dioxide is 0.5-1.5%, the zirconium dioxide total content is 30-60%, and the aluminium sesquioxide total content is 30-65%.
4 embodiments
4.1 embodiment 1
Proportion of raw materials is: desilicated zirconia 176kg, commercial alumina 234kg.The chemical composition content of raw material is asked for an interview table 1:
Table 1 material chemical component
| Al 2O 3 | ZrO 2 | SiO 2 | CaO | Fe 2O 3 | TiO 2 | MgO | K 2O | Na 2O | |
| Desilicated zirconia | 6.20 | 91.80 | 1.26 | 0.10 | 0.08 | 0.18 | 0.021 | 0.013 | 0.11 |
| Aluminum oxide | 98.68 | 0.025 | 0.035 | 0.40 |
After cooperation is finished, admixtion is mixed, the hopper of packing into is then delivered to the stokehold platform with overhead traveling crane.The capacity of used three-phawse arc furnace is 1.5 tons, 1.8 meters of electric furnace diameters, 1.2 meters of the degree of depth, 200 millimeters of Graphite Electrodes diameters, 650 millimeters of electrode circle diameters.Check water, electricity, oil, gas before the blow-on, complete broken electrode block, carry out starting the arc operation after all are ready at furnace bottom.The decline electrode connects the electric starting the arc.
Furnace temperature adds admixtion after reaching 1500 degree in batches.Added a defective material every 10 minutes, reinforced about 100 kilograms at every turn, last batch of material adds back refining 20 minutes, amounts to 60 minutes.Melting voltage is 180V, electric current 3000A.After melting finishes, melt is poured out electric arc furnace, open compressed air spraying simultaneously.Pressurized air will melt stream and smash into the bead that diameter is 0.5-3mm rapidly, and cooling is achieved fast, smashes but 25% material of having an appointment can not be compressed air.Through microscopical determination, aluminum oxide and zirconium white mix, the about 2-4 μ of former brilliant size m, and after compound material was crushed to the particle that diameter is 20 μ m, each powder particle all contained aluminum oxide and zirconium white equably.After this kind raw material added Mg-Al spinel brick with 3% volume, heat-shock resistance improved 30-50%; When replacing whole desilicated zirconias and being used for electric smelting AZS brick and producing, improve fusing speed 10%.
4.2 embodiment 2
Proportion of raw materials is: desilicated zirconia 173kg, commercial alumina 228kg, the magnesia powder 9kg of MgO 97%.% is with producing aluminium zirconium compound material with implementation column 1 identical mode.Aluminum oxide and zirconium white mix in the raw material, and the about 2-4 μ of former brilliant size m can not be compressed the material that air smashes and drop to 10% from 25% of embodiment 1, and the yield of product is greatly improved.After this kind raw material added Mg-Al spinel brick with 3% volume, heat-shock resistance improved 30-50%.
Major advantage of the present invention is: crystal grain is tiny, chemical purity is moderate, price is lower, fusing speed is fast, easy to prepare.This raw material is used to prepare heat-shock resistance, thermal conductivity and the extension kliner coating that periclasite-dimension stone of magnesia alumina spinel can significantly improve institute's prepared material; Be used to prepare the AZS melt material and then can reduce smelting time, reduce power consumption, prevent component segregation, thereby can make senior AZS castable refractory.Technology of the present invention can realize smoothly that the fusion of raw material is fast, and the time of production is short, and the consumption of electric energy is low, and technological process is easy to Be Controlled.The material of output has that crystal grain is tiny, and aluminum oxide and zirconium white are evenly distributed, the moderate and lower characteristics of price of chemical purity.Therefore, the present invention has successfully realized the preparation of close grain aluminium zirconium composite fire raw material, for refractory industry provides a kind of very novel refractory raw material of high-performance/price ratio that has.
Claims (1)
1. close grain aluminium zirconium composite fire raw material, it is characterized in that: the prescription of described refractory raw material is:
Desilicated zirconia 30-73%
Commercial alumina 27-70%
Magnesia 0-10%
Wherein zirconic content is 85-92% in the desilicated zirconia, content of magnesia is 97% in the magnesia, magnesian total content is 0.2-10% in this prescription, the total content of silicon-dioxide is 0.5-1.5%, the zirconium white total content is 30-60%, the aluminium sesquioxide total content is 30-65%, the former grain-size 2-4 μ m of described refractory raw material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310117374 CN1225432C (en) | 2003-12-12 | 2003-12-12 | Finegrained aluminium-chromium composite fireproof materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310117374 CN1225432C (en) | 2003-12-12 | 2003-12-12 | Finegrained aluminium-chromium composite fireproof materials |
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| CN1546421A CN1546421A (en) | 2004-11-17 |
| CN1225432C true CN1225432C (en) | 2005-11-02 |
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| CN 200310117374 Expired - Lifetime CN1225432C (en) | 2003-12-12 | 2003-12-12 | Finegrained aluminium-chromium composite fireproof materials |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2169311A1 (en) * | 2008-09-29 | 2010-03-31 | Siemens Aktiengesellschaft | Material mixture for producing a fire-retardant material, fire-retardant moulding body and method for its manufacture |
| CN101580396B (en) * | 2009-06-23 | 2012-07-04 | 李玉生 | Furnace body insulating material for quartz continuous melting furnace |
| CN101792323B (en) * | 2010-03-17 | 2012-12-26 | 赵大兴 | Aluminum-chromium-zirconium composite air bricks and manufacturing method thereof |
| FR3042497B1 (en) * | 2015-10-19 | 2021-12-31 | Saint Gobain Ct Recherches | MELTED GRAINS OF ZIRCONIA - SPINEL AND REFRACTORY PRODUCT OBTAINED FROM SAID GRAINS |
| EP3365304B1 (en) * | 2015-10-19 | 2019-08-14 | Saint-Gobain Centre De Recherches Et D'etudes Europeen | Fused spinel-zirconia grains and refractory product obtained from said grains |
| FR3042496B1 (en) * | 2015-10-19 | 2021-12-31 | Saint Gobain Ct Recherches | USE OF MELTED GRAINS OF ZIRCONIA - SPINEL FOR THE MANUFACTURE OF REFRACTORY PRODUCTS |
| CN114507077B (en) * | 2022-01-06 | 2023-01-17 | 瑞泰科技股份有限公司 | Fusion casting zirconium-chromium corundum refractory brick and preparation method thereof |
| CN115466107B (en) * | 2022-11-14 | 2023-06-30 | 湖南圣瓷科技有限公司 | Alumina ceramic with coarse-fine composite microstructure characteristics and application thereof |
| CN118005381A (en) * | 2024-04-10 | 2024-05-10 | 中钢洛耐科技股份有限公司 | Chromium aluminum silicon zirconium magnesium iron spinel synthetic raw material, preparation method and application thereof |
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