CN101891369A - Fused cast alpha-beta alumina cylindrical brick and production method thereof - Google Patents
Fused cast alpha-beta alumina cylindrical brick and production method thereof Download PDFInfo
- Publication number
- CN101891369A CN101891369A CN2010102427569A CN201010242756A CN101891369A CN 101891369 A CN101891369 A CN 101891369A CN 2010102427569 A CN2010102427569 A CN 2010102427569A CN 201010242756 A CN201010242756 A CN 201010242756A CN 101891369 A CN101891369 A CN 101891369A
- Authority
- CN
- China
- Prior art keywords
- brick
- beta alumina
- fused cast
- alpha
- casting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/235—Heating the glass
- C03B5/237—Regenerators or recuperators specially adapted for glass-melting furnaces
- C03B5/2375—Regenerator brick design ; Use of materials therefor; Brick stacking arrangements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Abstract
The invention discloses a fused cast alpha-beta alumina cylindrical brick, wherein inner and outer ends at four corners of hollow cylinder wall are all chamfers, middle parts of upper and lower ends of four cylinder walls are provided with position-corresponding protrusions or recesses, the dimension ratio of the height of the protrusions to the depth of the recesses is 1:5, the formula of the brick includes 10-30% of recovered fused cast alpha-beta alumina clinker, and fused cast alpha-beta alumina brick raw material as the balance, which is homogeneous to the recovered clinker. The production method of the fused cast alpha-beta alumina cylindrical brick comprises the steps of: blending materials at first; feeding nitrogen in through the upper part of a hollow electrode, fusing the materials according to a low-voltage large-current fusing process in which the fusing voltage is 180 to 280V, the current is 4 to 9 thousands A and the constant conduction pressure of the nitrogen is 0.3 to 0.8MPa; then implementing casting formation, wherein the cast form adopts body clinker or magnesite integral sand mould, the weight ratio of mould sand to water glass is 90-100 : 6-10, the water glass modulus is 3.2 to 3.3, the casting temperature is 1900 to 2000 DEG C, and the casting speed is 180 to 200kg/min; annealing by using a silicon-aluminum hollow sphere as heat preservation medium after the casting, wherein the annealing speed is 0.053 to 0.060 DEG C/kg . h; and in the end, forming the cylindrical brick by means of cold working.
Description
Technical field:
The invention belongs to the refractory materials category, relate to fused cast alpha-beta alumina cylindrical brick and production method, product is mainly used in builds the Modern Glass Melting Tank regenerator by laying bricks or stones.
Background technology:
At present, the glass melter regenerator generally adopts the west door minor of building by laying bricks or stones with sintered magnesia brick, magnesia chrome brick and low pore clay brick multilayer or compiles basket checker, engenders the bobbin shape checker of building by laying bricks or stones with the magnesia spool tile of sintering, fusion casting azs (zircon corundum) special shaped brick multilayer in recent years.Utilize spool tile to replace former lath brick, checker is funnel-shaped difficult obstruction, and the tubular checker brick have kept the physicochemical property of former lath brick generally, and build by laying bricks or stones conveniently, brick body consistency from top to bottom does not have free suspended portion, Stability Analysis of Structures substantially, work-ing life is longer, thereby comes into one's own day by day.Compare lath brick and compile blue formula checker, bobbin shape checker cost high approximately 15%, but than the low 80-150% of cruciform checkers daughter, and on energy-conservation, bobbin shape checker and the daughter of cruciform checkers are more or less the same, lath brick is compiled the annual 1-2% of increasing of blue formula checker hear rate, and bobbin shape checker hear rate is annual to be increased approximately 0.5%, saves a large amount of energy owing to " wearing out " slows down.But structure, the performance of sintering lath brick and sintering spool tile self determine that its thermal capacity is lower, thermal conductivity is not high, causes the checker heat recovery rate low, and the unit weight that reaches same heat-transfer effect is big, alkali resistant, anti-fly to expect that erosion performance is poor, high temperature resistance, anti-thermal shock and ageing resistance are relatively poor.
The checker brick of same thickness (40mm) are because of goods material difference, its heat exchange amount difference is very big, the heat exchange amount of fusion casting azs (zircon corundum) brick is respectively greater than magnesia brick, silica brick and clay brick, and the thermal capacity of fused cast alpha-beta alumina brick and heat exchange amount are greater than fusion casting azs (zircon corundum) brick.α-Al in the fused cast alpha-beta alumina goods
2O
3Phase is Heat stability is good at high temperature, β-Al
2O
3Contain Na mutually
2The O composition is saturated to high temperature alkali steam.Thereby, adopt the brick glass melter regenerator of building of fused cast alpha-beta alumina, will be a much progress of glass industry, can produce great effect to the productivity that improves regenerator usefulness, life-span and glass melter.
But, because α-Al in the fused cast alpha-beta alumina goods
2O
3Thermal expansivity is big, the feed liquid crystallization range is narrow, the glassy phase content of goods own is few, adds that spool tile is complex-shaped, and foundry goods exists bigger internal structure stress and how much temperature stresses, if continue to use the common process of fused cast alpha-beta alumina common brick, product inside can not form finely dispersed micropore, can not adapt to the working conditions that the regenerator temperature cycle changes, and cause mass defect such as product cracking also inevitable again, yield rate is low, can't organize the production of industrially scalable.Thereby, still do not have plant-scale batch fused cast alpha-beta alumina cylindrical brick so far and go on the market.
Summary of the invention:
The objective of the invention is to overcome the above-mentioned defective of prior art, the high-quality fused cast alpha-beta alumina cylindrical brick and the production method thereof of urgent need is provided for glass industry.It is few that the present invention has a foreign matter content, and inside is uniform micropore shape structure, compressive strength height, erosion-resisting characteristics and Heat stability is good, the characteristics that high temperature resistance and ageing resistance are strong.
The present invention adopts technical scheme to be: develop a kind of fused cast alpha-beta alumina cylindrical brick, it is characterized in that described spool tile is the tubular structure of four jiaos of equal chamferings of inside and outside end of barrel of hollow, pars intermedia in its four barrel upper ends or lower end has the projection or the groove of position correspondence respectively, hill height is 1: 5 with the size ratio of depth of groove, during building construction, projection interlocks with groove, still leave a fixed gap, both made regenerator lattice firm, unit weight alleviates, make that again air-flow laterally circulates, increase heat interchanging area and efficient.
Develop a kind of production method of fused cast alpha-beta alumina cylindrical brick, comprise batching, fusion, cast molding, annealing and cold working operation, it is characterized in that containing in the admixtion 10～30% recovery fused cast alpha-beta alumina grog, surplus is and the fused cast alpha-beta alumina brick prescription raw material of grog with material, take the technical measures of logical nitrogen from hollow electrode top, utilize low-voltage, high-current melting process molten batch material in three-phawse arc furnace, pouring temperature during cast molding is 1900～2000 ℃, casting rate 180～200kg/min, 0.053～0.060 ℃/kgh of cooling annealed cooling rate, casting mold adopt magnesia or body grog to make whole sand mold.
In the above-mentioned burden process, contain 10～30% recovery fused cast alpha-beta alumina grog in the admixtion prescription, grog consists of Al
2O
3〉=93.5%, Na
2O≤4.0%, SiO
2+ CaO+MgO≤2.5%, surplus are and reclaim the fused cast alpha-beta alumina brick prescription raw material of grog with material that promptly commercial alumina 66.5～85.5%, additive: smart quartz sand 0.7～0.95%, yellow soda ash 2.6～3.4%.
Use hollow electrode in the above-mentioned fusion operation, and portion feeds nitrogen from it, take the low-voltage, high-current melting process in three-phawse arc furnace, admixtion to be carried out fusion, melting voltage 180～the 280V of electric arc furnace, fusion current 4000～9000A, the nitrogen pressure that continues conducting from hollow electrode is 0.3～0.8mpa.
This technology is better than the melting process of existing common fused cast alpha-beta alumina product.Owing to change the furnace atmosphere condition, make electric arc furnace be in the weak oxide state, reduce consumption of electrode and carburizing relatively and pollute, strengthen arc power and melting efficiency, significantly cut down the consumption of energy and improved the quality of product.
The pouring temperature of liquation is 1900～2000 ℃ in the above-mentioned cast molding operation, casting rate 180～200kg/min.
In the whole sand mold of above-mentioned body grog or magnesia, its part by weight is:
Molding sand: water glass=90～100: 6～10, the modulus 3.2～3.3 of water glass wherein.
Molding sand refers to magnesia or fused cast alpha-beta alumina body grog, and whole sand mold is better than existing sand mo(u)ld plate assembly unit mold technique.
Adopt hollow silica alumina ball to make the insulation medium in the above-mentioned annealing operation;
0.053～0.060 ℃/kgh of cooling rate of above-mentioned annealing operation.
This technology is better than the annealing way as the goods thermal insulation medium such as diatomite, aluminum oxide, expanded vermiculite, quartz sand, and the temperature stress of goods is reduced greatly, improves the quality of products, and reduces the annealing operation dust pollution simultaneously, improves Working environment.
Adopt diamond lap, cutting off machine fabricated product in the above-mentioned cold working operation.
The fused cast alpha-beta alumina cylindrical brick product that adopts technology of the present invention to make, sidewall thickness is little, and the unit volume heating surface area is big, weight is little, the heat recovery rate height, anti-erosion and thermal shock resistance are good, thermal conduction, thermal capacity height, high temperature resistance and resistance matter performance are all strong.
Description of drawings:
Accompanying drawing is a fused cast alpha-beta alumina cylindrical brick structural representation of the present invention.
Embodiment:
Embodiment 1
Batching: raw material contains 15% recovery grog in forming, and surplus is and the fused cast alpha-beta alumina brick prescription raw material of grog with material that promptly commercial alumina 81.25%, additive: smart quartz sand 0.85%, yellow soda ash 2.90%.
Preparation technology comprises batching, mixing, electric furnace fusion, cooling annealing and cold working.
Molding sand mixes with the automatic control high-speed mixer, in the wooden mold of packing into, drills through venting hole after vibratory compaction, makes complete model with high-strength adhesive after brushing commercially available high temperature parting agent.
The electric furnace fusion: the batching of mixing adopts hollow electrode to melt in three-phawse arc furnace, melting voltage 237V, and fusion current 5000～5600A, the nitrogen pressure that continues conducting from hollow electrode is 0.4mpa.
Cast molding:
Pouring temperature is 1960 ℃, casting rate 185kg/min.
The casting mold whole sand mold of body grog.Its part by weight is the body grog: water glass=90: 6.8, modulus of water glass 3.22.
Annealing operation: adopt hollow silica alumina ball to make the insulation medium; 0.056 ℃/the kgh of cooling rate of annealing operation.
Cold working: adopt diamond lap, cutting off machine fabricated product.
Good product quality of the present invention, its physicochemical property data are as follows:
1. chemical ingredients (wt%): Al
2O
3SiO
2CaO MgO Na
2O
94.4％ 1.34％ 0.067％ 0.066％ 3.69％
2. physicals: spool tile common brick
Apparent porosity (%) 0.74 1.0
Volume density (g/cm
3) 3.2 3.3
Bubble eduction rate (%) 00
Cold crushing strength (mpa) 170 200
Anti-thermal shock stability (1300 ℃, air-cooled number of times)＞10≤7
After product of the present invention (hollow checkerwork cell 160 * 160mm, the thick 40mm of barrel, height 130mm) was built use by laying bricks or stones, what constitute regenerator unit lattice body had related parameter as follows:
Embodiment 2
Batching: raw material contains 30% recovery grog in forming, and surplus is and the fused cast alpha-beta alumina brick prescription raw material of grog with material that promptly commercial alumina 66.64%, additive: smart quartz sand 0.70%, yellow soda ash 2.66%.
The electric furnace fusion: the batching of mixing adopts hollow electrode to melt in three-phawse arc furnace, melting voltage 246V, and fusion current 5800～6500A, the nitrogen pressure that continues conducting from hollow electrode is 0.6mpa.
Cast molding:
Pouring temperature is 2000 ℃, casting rate 195kg/min.
The casting mold whole sand mold of magnesia.Its part by weight is a magnesia: water glass=100: 8, modulus of water glass 3.29.
Annealing operation: adopt hollow silica alumina ball to make the insulation medium;
0.054 ℃/the kgh of cooling rate of annealing operation.
After adopting the diamond lap lathe to goods cold working, the physicochemical property data of product are as follows:
1. chemical ingredients (wt%): Al
2O
3SiO
2CaO MgO Na
2O
94.8％ 1.14％ 0.067％ 0.066％ 3.50％
2. physicals: spool tile common brick
Apparent porosity (%) 0.84 1.0
Volume density (g/cm
3) 3.23 3.3
Bubble eduction rate (%) 00
Cold crushing strength (mpa) 178 200
Anti-thermal shock stability (1300 ℃, air-cooled number of times)＞10≤7
Claims (2)
1. fused cast alpha-beta alumina cylindrical brick, it is characterized in that: described spool tile is the tubular structure of four jiaos of equal chamferings of inside and outside end of barrel of hollow, the pars intermedia of its four barrel upper ends or lower end has the projection or the groove of position correspondence respectively, hill height is 1: 5 with the size ratio of depth of groove, the admixtion prescription of described tubular brick is 10～30% recovery fused cast alpha-beta alumina grog, and grog consists of Al
2O
3〉=93.5%, Na
2O≤4.0%, SiO
2+ CaO+MgO≤2.5%, surplus are and reclaim the fused cast alpha-beta alumina brick raw material of grog with material that promptly commercial alumina 66.5～85.5%, smart quartz sand 0.7～0.95%, yellow soda ash 2.6～3.4%.
2. production method of producing the described fused cast alpha-beta alumina cylindrical brick of claim 1, comprise batching, fusion, cast molding, annealing and cold working operation, it is characterized in that: utilize hollow electrode top to lead to nitrogen, the melting process molten batch material of low-voltage, high-current, cast molding again, product is made in last cold working, described melting voltage 180～280V, fusion current 4000～9000A, it is 0.3～0.8mpa that nitrogen continues conducting pressure, pouring temperature is 1900-2000 ℃, casting rate 180～200kg/min, adopt hollow silica alumina ball to make the insulation medium in the described annealing operation, 0.053～0.060 ℃/kgh of cooling rate of annealing operation, the casting mold of described cast molding body grog or the whole sand mold of magnesia, its part by weight is a molding sand: water glass=90～100: 6～10, and the modulus 3.2～3.3 of water glass wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102427569A CN101891369B (en) | 2010-08-03 | 2010-08-03 | Fused cast alpha-beta alumina cylindrical brick and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102427569A CN101891369B (en) | 2010-08-03 | 2010-08-03 | Fused cast alpha-beta alumina cylindrical brick and production method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101891369A true CN101891369A (en) | 2010-11-24 |
| CN101891369B CN101891369B (en) | 2012-04-18 |
Family
ID=43100749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102427569A Active CN101891369B (en) | 2010-08-03 | 2010-08-03 | Fused cast alpha-beta alumina cylindrical brick and production method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101891369B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102815930A (en) * | 2012-08-15 | 2012-12-12 | 郑州东方安彩耐火材料有限公司 | Alpha-beta hanging wall brick production process |
| CN105541351A (en) * | 2015-12-21 | 2016-05-04 | 郑州汇特耐火材料有限公司 | Glass melting furnace regenerator top special-use compound spinel zirconium brick and producing method thereof |
| CN107759208A (en) * | 2016-08-20 | 2018-03-06 | 郑州东方安彩耐火材料有限公司 | Founding β Al2O3The manufacturing process of brick |
| CN107935570A (en) * | 2017-12-01 | 2018-04-20 | 瑞泰科技股份有限公司 | A kind of founding aluminium oxide refractory material spinelle sand mold and preparation method thereof |
| CN112225543A (en) * | 2020-10-12 | 2021-01-15 | 郑州方铭高温陶瓷新材料有限公司 | Fusion-cast formed cylindrical ceramic tile applied to glass kiln regenerator and preparation method thereof |
| CN114507077A (en) * | 2022-01-06 | 2022-05-17 | 瑞泰科技股份有限公司 | Fusion casting zirconium-chromium corundum refractory brick and preparation method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773906B (en) * | 2012-07-09 | 2014-10-08 | 郑州东方安彩耐火材料有限公司 | Corundum sand mold for producing fused-cast alumina refractory materials and production technique thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53113809A (en) * | 1977-03-17 | 1978-10-04 | Central Glass Co Ltd | Boron oxideealumina base refractories |
| CN1109035A (en) * | 1994-12-22 | 1995-09-27 | 沈阳耐火材料厂 | Method for increasing finished product rate of fusion-cast alpha-beta aluminum oxide bricks |
| US20050159294A1 (en) * | 2002-03-01 | 2005-07-21 | Saint-Gobain Centre De Recherches Et D'etudes Europeen | Molten and cast refractory product with high zirconia content |
| EP1667944B1 (en) * | 2003-09-01 | 2007-07-25 | Saint-Gobain Centre de Recherches et d'Etudes Européen | Hollow piece for producing a sintered refractory product exhibiting improved bubbling behaviour |
| CN201327298Y (en) * | 2008-12-05 | 2009-10-14 | 淄博嘉环耐火材料有限公司 | Magnesium-zirconium spool tile |
| CN101708997A (en) * | 2009-11-10 | 2010-05-19 | 武汉科技大学 | Alumina light-weight brick and preparation method thereof |
-
2010
- 2010-08-03 CN CN2010102427569A patent/CN101891369B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53113809A (en) * | 1977-03-17 | 1978-10-04 | Central Glass Co Ltd | Boron oxideealumina base refractories |
| CN1109035A (en) * | 1994-12-22 | 1995-09-27 | 沈阳耐火材料厂 | Method for increasing finished product rate of fusion-cast alpha-beta aluminum oxide bricks |
| US20050159294A1 (en) * | 2002-03-01 | 2005-07-21 | Saint-Gobain Centre De Recherches Et D'etudes Europeen | Molten and cast refractory product with high zirconia content |
| EP1667944B1 (en) * | 2003-09-01 | 2007-07-25 | Saint-Gobain Centre de Recherches et d'Etudes Européen | Hollow piece for producing a sintered refractory product exhibiting improved bubbling behaviour |
| CN201327298Y (en) * | 2008-12-05 | 2009-10-14 | 淄博嘉环耐火材料有限公司 | Magnesium-zirconium spool tile |
| CN101708997A (en) * | 2009-11-10 | 2010-05-19 | 武汉科技大学 | Alumina light-weight brick and preparation method thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102815930A (en) * | 2012-08-15 | 2012-12-12 | 郑州东方安彩耐火材料有限公司 | Alpha-beta hanging wall brick production process |
| CN105541351A (en) * | 2015-12-21 | 2016-05-04 | 郑州汇特耐火材料有限公司 | Glass melting furnace regenerator top special-use compound spinel zirconium brick and producing method thereof |
| CN105541351B (en) * | 2015-12-21 | 2017-09-19 | 郑州汇特耐火材料有限公司 | Glass melter regenerator top specific complex spinelle zirconia block and its manufacture method |
| CN107759208A (en) * | 2016-08-20 | 2018-03-06 | 郑州东方安彩耐火材料有限公司 | Founding β Al2O3The manufacturing process of brick |
| CN107935570A (en) * | 2017-12-01 | 2018-04-20 | 瑞泰科技股份有限公司 | A kind of founding aluminium oxide refractory material spinelle sand mold and preparation method thereof |
| CN112225543A (en) * | 2020-10-12 | 2021-01-15 | 郑州方铭高温陶瓷新材料有限公司 | Fusion-cast formed cylindrical ceramic tile applied to glass kiln regenerator and preparation method thereof |
| CN114507077A (en) * | 2022-01-06 | 2022-05-17 | 瑞泰科技股份有限公司 | Fusion casting zirconium-chromium corundum refractory brick and preparation method thereof |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101891369B (en) | 2012-04-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101891369B (en) | Fused cast alpha-beta alumina cylindrical brick and production method thereof | |
| CN102672154B (en) | Continuous-casting tundish comprehensive permanent liner and preparation method thereof | |
| EP2006260A1 (en) | Refractory composition for glass melting furnaces | |
| CN104961443A (en) | High-strength deformation-resistant engineering ceramic product and preparation method thereof | |
| CN104926328A (en) | Fused zirconia corundum low-seepage brick production method | |
| KR20100051596A (en) | Azs refractory composition | |
| CN107580590B (en) | Method for repairing an unshaped product of a glass melting furnace | |
| CN102225867B (en) | Silicon carbide furnace door brick for ore-smelting electric furnace and preparation method thereof | |
| CN100381400C (en) | Magnesia profile sand for preparing founding aluminium oxide refractory material | |
| CN101367665B (en) | Sintered alpha-beta aluminum oxide brick | |
| KR20140043140A (en) | Refractory block and glass-melting furnace | |
| CN101830718B (en) | Manufacturing method of corundum zircon brick | |
| CN102538468B (en) | Low-heat-conduction fused cast zirconia-corundum compound bricks and production method thereof | |
| CN102285803A (en) | Production method of electrically-fused zirconia-corundum refractory brick | |
| CN102531645A (en) | Corundum Calcium Magnesium Aluminum Spinel Crucible | |
| CN102773906B (en) | Corundum sand mold for producing fused-cast alumina refractory materials and production technique thereof | |
| CN112062584B (en) | Composite refractory material and preparation method thereof | |
| CN105750482B (en) | For the coating without shrinkage cavity fused cast refractories insulated feeder | |
| CN103242047A (en) | Method for producing zirconium corundum firebrick for glass kiln | |
| CN115043660A (en) | Casting high-chromium refractory brick | |
| CN1199891C (en) | Fused zirconium corundum extraordinary shaped product and its production method | |
| CN105669217A (en) | Glass kiln silicon firebrick production method | |
| CN107963900A (en) | Compound saggar, preparation method and applications | |
| CN104119082A (en) | Chromium-free casting material for outer lining of RH (Relative Humidity) furnace inserting tube | |
| CN107759208A (en) | Founding β Al2O3The manufacturing process of brick |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |