CN1354151A - Fused zirconium corundum extraordinary shaped product and its production method - Google Patents
Fused zirconium corundum extraordinary shaped product and its production method Download PDFInfo
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- CN1354151A CN1354151A CN00129332A CN00129332A CN1354151A CN 1354151 A CN1354151 A CN 1354151A CN 00129332 A CN00129332 A CN 00129332A CN 00129332 A CN00129332 A CN 00129332A CN 1354151 A CN1354151 A CN 1354151A
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- shaped product
- zirconium corundum
- production method
- extraordinary
- fused zirconium
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- 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
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- 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
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Abstract
The present invention belongs to field of refractory material, and relates to a strip or hollow tubular casting zirconium corundum shaped product whose cross-section is made into cross form and hollow octagon form. Its prepared raw material contains 10-50% of synthetic grog. Pouring temp. is 1780-1860 deg.C, pouring rate is above 200 kg/min, at its mold uses resin block mold. Said invented product possesses features of small impurity, uniform compact structure, high compression strength, good corrosion resistance and thermal stability and strong high-temp. resistance.
Description
The invention belongs to the refractory materials category, relate to fused zirconium corundum extraordinary shaped product and production method.Product is mainly used in builds various glass melter regenerator by laying bricks or stones.
At present, the basket checker of volume that the glass melter regenerator generally adopts sintering basic brick, sintering magnesia alumina brick and low pore clay brick multilayer pendulum to build, in recent years just progressively to the fused cast zirconia-alumina brick transition, but " brick " of common form, because its structure, form itself have determined that its thickness is big, heat recovery rate is low, heat transfer area is little, unit weight is big, alkali resistant, anti-fly that material corrodes, thermal shock resistance is poor, thermal conduction, thermal capacity are low, and high temperature resistance and resistance matter performance are also poor.
If build block glass melter regenerator with fused zirconium corundum extraordinary shaped product, will be a much progress of glass industry, can produce tremendous influence to the productivity that improves glass melter.
But, fused zirconium corundum extraordinary shaped product surface shape complexity, face is many, and the angle is many, and stress concentration is continued to use the common process of casting zirconia corundum common brick, and mass defects such as product cracking are inevitable, and yield rate is low, can't organize plant-scale production.Thereby, still do not have plant-scale fused zirconium corundum extraordinary shaped product up to now and go on the market.
The objective of the invention is to overcome the above-mentioned defective of prior art, the high-quality fused zirconium corundum extraordinary shaped product and the production method of urgent need is provided for glass industry.
The technical solution used in the present invention is: develop a kind of fused zirconium corundum extraordinary shaped product, it is characterized in that described special-shaped product is the tubular of strip or hollow, its cross section is respectively cruciform and hollow octagon.
Develop a kind of production method of fused zirconium corundum extraordinary shaped product, comprise batching, cast molding and annealing operation, contain 10～50% synthetic grog in it is characterized in that preparing burden, surplus is 33# fused cast zirconia-alumina brick prescription raw material, pouring temperature during cast molding is 1780～1860 ℃, casting rate is greater than 200kg/min, and casting mold is with the whole sand mold of resin.
Characteristics such as the present invention has that impurity is few, even structure is fine and close, compressive strength is high, erosion-resisting characteristics and Heat stability is good, high temperature resistant property are strong.
Above-mentioned casting mold is with in the whole sand mold of resin, and its part by weight is:
Silica sand: portions of resin stiffening agent=80～100: 0.5～5: 0.1～0.5;
Whole sand mold is better than the assembly mould making process of existing baking water glass template.
Adopt surperficial lobed refractory heat-isolating hollow ball to make the insulation medium in the above-mentioned annealing operation;
The cooling rate of above-mentioned annealing operation should be less than 0.052 ℃/kgh.
This technology is better than existing diatomite, aluminum oxide, expanded vermiculite, quartz sand, perlite etc. as goods annealed thermal insulation medium.This process using thermal insulation medium good heat insulating reduces goods rimose thermal stresses greatly, has improved quality product.Reduce dust pollution simultaneously, improved Working environment.
The fused zirconium corundum extraordinary shaped product that adopts technology of the present invention to make, the little heat recovery rate height of thickness, heat transfer area is big, unit weight is little, alkali resistant, anti-ly flies that material corrodes, thermal shock resistance is good, and thermal conduction, thermal capacity are all high, and high temperature resistance and resistance matter performance are all strong.
The present invention is further elaborated below in conjunction with drawings and Examples:
Fig. 1 is the structural form synoptic diagram of the casting zirconia corundum cruciform product of one embodiment of the invention;
Fig. 2 is the structural form synoptic diagram of the anistree tubular product of casting zirconia corundum of another embodiment of the present invention;
Fig. 3 is the structural form enlarged diagram of the surperficial lobed refractory heat-isolating hollow ball that adopts in the annealing operation of the present invention.
Embodiment one
Batching: contain 10% synthetic grog (being the clout that the limit of fused cast zirconia-alumina brick prescription raw material after founding, angle etc. reuse) during raw material is formed, surplus is 33# fused cast zirconia-alumina brick prescription raw material, be zircon sand 45%, commercial alumina 42.9%, additive (yellow soda ash) 2.1%.
Preparation technology comprises batching, mixing, electric furnace fusion, cast molding, cooling annealing and cold working.
Batching mixes with high speed mixer, in the wooden mold of packing into, bores upper air-vent after vibratory compaction, makes complete model with high-strength adhesive after coating commercially available parting agent.
Cast molding:
Pouring temperature is 1780 ℃, and casting rate is greater than 200kg/min.
The casting mold whole sand mold of resin.Its part by weight is a silica sand: portions of resin stiffening agent=80: 5: 0.5;
Annealing operation: adopt surperficial lobed refractory heat-isolating hollow ball to make the insulation medium; The cooling rate of annealing operation is less than 0.052 ℃/kgh.
Cold working: adopt the diamond lapping machine abrasive article.
Good product quality of the present invention, its physicochemical property data are as follows:
1. Chemical Composition (%): SiO
2Al
2O
3ZrO
2Na
2O Fe
2O
3TiO
2
15.74 49.40 33.11 1.33 0.12 0.07
2. physicals: oxidation style reduction method
Apparent porosity (%) 0.7 3.0
Volume density (g/cm
3) 3.75 3.6
The glassy phase primary temperature (℃) 1,400 1150
Bubble eduction rate 1.0 1.3
Thermal shock resistance (1300 ℃, air-cooled number of times) 10 7
Product of the present invention is on probation in somewhere float flat glass melting furnaces regenerator, increases the service life 1.5 times to have reached the goal of the invention of expection.
Embodiment two
Batching: raw material contains 50% synthetic grog in forming, and surplus is 33# fused cast zirconia-alumina brick prescription raw material, and promptly zircon sand 25%, commercial alumina 23.83%, additive (yellow soda ash) 1.17%.
Cast molding:
Pouring temperature is 1860 ℃, and casting rate is greater than 250kg/min.
The casting mold whole sand mold of resin.Its part by weight is a silica sand: portions of resin stiffening agent=100: 0.5: 0.1;
Annealing operation:
Adopt surperficial lobed refractory heat-isolating hollow ball to make the insulation medium;
The cooling rate of annealing operation is less than 0.045 ℃/kgh.
All the other are with example one.
Embodiment three
Batching: raw material contains 20% synthetic grog in forming, and surplus is 33# fused cast zirconia-alumina brick prescription raw material, and promptly zircon sand 40%, commercial alumina 38.2%, additive (yellow soda ash) 1.8%.
Cast molding:
Pouring temperature is 1820 ℃, and casting rate is greater than 230kg/min.
The casting mold whole sand mold of resin.Its part by weight is a silica sand: portions of resin stiffening agent=90: 3: 0.3;
Annealing operation:
Adopt surperficial lobed refractory heat-isolating hollow ball to make the insulation medium;
The cooling rate of annealing operation is less than 0.040 ℃/kgh.
All the other are with example one.
Claims (5)
1. a fused zirconium corundum extraordinary shaped product is characterized in that described special-shaped product is the tubular of strip or hollow, and its cross section is respectively cruciform and hollow octagon.
2. according to the production method of the described fused zirconium corundum extraordinary shaped product of claim 1, comprise batching, cast molding and annealing operation, contain 10～50% synthetic grog in it is characterized in that preparing burden, surplus is 33# fused cast zirconia-alumina brick prescription raw material, pouring temperature during cast molding is 1780～1860 ℃, casting rate is greater than 200kg/min, and casting mold is with the whole sand mold of resin.
3. according to the production method of the described fused zirconium corundum extraordinary shaped product of claim 2, it is characterized in that described casting mold with in the whole sand mold of resin, its part by weight is a silica sand: portions of resin stiffening agent=80～100: 0.5～5: 0.1～0.5.
4. according to the production method of the described fused zirconium corundum extraordinary shaped product of claim 2, it is characterized in that adopting in the described annealing operation surperficial lobed refractory heat-isolating hollow ball to make the insulation medium.
5. according to the production method of the described fused zirconium corundum extraordinary shaped product of claim 2, the cooling rate that it is characterized in that described annealing operation is less than 0.052 ℃/kgh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB00129332XA CN1199891C (en) | 2000-11-17 | 2000-11-17 | Fused zirconium corundum extraordinary shaped product and its production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB00129332XA CN1199891C (en) | 2000-11-17 | 2000-11-17 | Fused zirconium corundum extraordinary shaped product and its production method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1354151A true CN1354151A (en) | 2002-06-19 |
| CN1199891C CN1199891C (en) | 2005-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB00129332XA Expired - Fee Related CN1199891C (en) | 2000-11-17 | 2000-11-17 | Fused zirconium corundum extraordinary shaped product and its production method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538468A (en) * | 2010-12-17 | 2012-07-04 | 瑞泰科技股份有限公司 | Low-heat-conduction fused cast zirconia-corundum compound bricks and production method thereof |
| CN111517785A (en) * | 2020-04-29 | 2020-08-11 | 洛阳大洋高性能材料有限公司 | Production process and production equipment of high-zirconium fusion cast brick |
| 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 |
-
2000
- 2000-11-17 CN CNB00129332XA patent/CN1199891C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538468A (en) * | 2010-12-17 | 2012-07-04 | 瑞泰科技股份有限公司 | Low-heat-conduction fused cast zirconia-corundum compound bricks and production method thereof |
| CN111517785A (en) * | 2020-04-29 | 2020-08-11 | 洛阳大洋高性能材料有限公司 | Production process and production equipment of high-zirconium fusion cast brick |
| CN111517785B (en) * | 2020-04-29 | 2021-10-22 | 洛阳大洋高性能材料有限公司 | Production process and production equipment of high-zirconium fusion cast brick |
| 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 |
|---|---|
| CN1199891C (en) | 2005-05-04 |
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Granted publication date: 20050504 Termination date: 20091217 |