CN102060552A - Box-type heat insulating and annealing way of aluminum oxide electric smelting brick - Google Patents
Box-type heat insulating and annealing way of aluminum oxide electric smelting brick Download PDFInfo
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- CN102060552A CN102060552A CN 201010557113 CN201010557113A CN102060552A CN 102060552 A CN102060552 A CN 102060552A CN 201010557113 CN201010557113 CN 201010557113 CN 201010557113 A CN201010557113 A CN 201010557113A CN 102060552 A CN102060552 A CN 102060552A
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- aluminum oxide
- casting
- heat insulating
- box
- insulation
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Abstract
The invention relates to a box-type heat insulating and annealing way of an aluminum oxide electric smelting brick, belonging to the technical field of refractory materials. Light aluminum oxide powder is contained in a box body. Before casting, a casting mould is placed in a heat insulating box, the bottom and the periphery of the heat insulating box are filled with the light aluminum oxide powder, and after casting, the top of the casting mould is also directly and continuously coated with the light aluminum oxide powder to be subjected to heating insulating and annealing; or the casting mould is directly placed on a casting table for combining, the casting mould is removed after casting, the product is lifted up to the upper heat insulating box, and then the heat insulating box is filled with the light aluminum oxide powder to be subject to heat insulating and annealing. The invention has the advantages of simplicity and convenience for operation, small labor intensity, good operation environment, uniformity for heat insulation, good product quality and improvement of finished product ratio of products.
Description
Technical field
The present invention relates to a kind of box insulation annealing mode of aluminum oxide fused cast refractories, belong to technical field of refractory materials.
Background technology
Flourish along with glass industry, glass production producer sharply increases the demand of glass furnace refractory materials.And the aluminum oxide fused cast refractories mainly is used in the glass furnace key position, so the quality of aluminum oxide fused cast refractories quality is determining the quality of glassy product largely.The insulation annealing process is the key link that influences aluminum oxide fused cast refractories salient features, and whether it is related to the height and the internal structure of product percent of pass reasonable.Therefore, adopt suitable lagging material to become key.Traditional diatomite or vermiculite lagging material then can not satisfy this requirement, have following shortcoming:
(1) diatomite is light yellow or light grey usually, that vermiculite is generally is brown, yellow, grizzle after the sap green, heating, aluminum oxide fused cast refractories casting temp is higher, when insulation, diatomite or vermiculite are bonded in product surface easily, cleaning is difficulty relatively, thereby and makes the painted visual appearance defective that causes product of product.
(2) diatomite and vermiculite are owing to be natural lagging material, and the heat-insulating property instability is unfavorable for eliminating the detrimentally affect of various stress to goods, and the product crackle produces more.
(3) use diatomite and vermiculite insulation annealing time long.
Summary of the invention
The object of the present invention is to provide a kind of box insulation annealing mode of aluminum oxide fused cast refractories, insulation annealing is effective, improves the surface quality of aluminum oxide fused cast refractories, and annealing time is short, with short production cycle, the production efficiency height.
The box insulation annealing mode of aluminum oxide fused cast refractories of the present invention, before casting, casting mold is seated in the insulation can, in the bottom of insulation can and on every side with the filling of lightweight alumina powder, after the casting, directly continue to cover the lightweight alumina powder again at the casting mold top and carry out insulation annealing.
The chemical percentage composition of lightweight alumina powder is:
Al
2O
3 ≥?95%
SiO
2 ≤?0.3%
Fe
2O
3 ≤?0.1%
CaO ≤?0.02%
MgO ≤?0.05%
K
2O ≤?0.03%
TiO
2+ ZrO
2Surplus.
The particle diameter of lightweight alumina powder is 20-100 μ m.
During use, before casting, casting mold is seated in the insulation can,, after the casting, directly continues to cover the lightweight alumina powder again at the casting mold top and carry out insulation annealing in the bottom of insulation can and on every side with the filling of lightweight alumina powder.Or directly be seated on the casting platform and combine, remove casting mold after the casting, product is hung in the top insulation can, with the lightweight alumina powder insulation can is filled up again and carry out insulation annealing.
Before the casting, casting mold can be put single or multiple combinations in insulation can.
Need rising head, add the rising head casting; Remove rising head after the casting, cover the lightweight alumina powder again and be incubated.
After insulation annealing is finished product is taken out, the lightweight alumina powder in the insulation can is reused by recycling again.
The present invention directly is equipped with the lightweight alumina powder as lagging material, good heat insulating, and it is effective to anneal, and has following beneficial effect:
When (1) adopting the lightweight alumina powder, melting the less appearance of situation on product.And polluted product has not improved the surface quality of fused corundom brick.
(2) heat insulation effect is remarkable, helps the slow cooling of product and reaches balanced, thereby reduced the possibility that thermal stresses produces, and has effectively eliminated various stress to the detrimentally affect of goods and the product defect that may cause, and improves quality product.
(3) the alumina heat preservation method is simple, and strong operability is compared with traditional lagging material, and its cooling time is also shorter, shortens the production cycle, enhances productivity.
Embodiment
The invention will be further described below in conjunction with embodiment.
Embodiment
The box insulation annealing mode of aluminum oxide fused cast refractories of the present invention is as follows:
Mode one:
(1) at bottom place mat one deck lightweight alumina powder of the insulation can of sky and shakeout;
(2) single or multiple casting molds are put into insulation can, between casting mold and the insulation can or the distance between a plurality of casting mold want evenly;
(3) put casting pressing port (nothing contract sky product do not need), cast;
(4) remove rising head (nothing contract sky product do not need) after the casting, insulation can is filled up with the lightweight alumina powder;
(5) insulation can is placed into the designated area and carries out insulation annealing.After insulation annealing is finished, product is hung out from insulation can.
Lightweight alumina powder in the insulation can is reused remove impurity such as its silica sand by screening after again.
Mode two:
(1) at the bottom of insulation can place mat one deck lightweight alumina powder and shakeout;
(2) casting mold is placed on combine on the casting platform and casts;
(3) remove casting mold after the casting, product is hung in the top insulation can, with the lightweight alumina powder insulation can is filled up again;
(4) insulation can is placed into the designated area and carries out insulation annealing.After insulation annealing is finished, product is hung out from insulation can.
Lightweight alumina powder in the insulation can is reused after removing wherein impurity by screening again.
Wherein:
The particle diameter of the lightweight alumina powder that uses is 20-100 μ m, and chemical percentage composition is:
Al
2O
3 96%
SiO
2 0.2%
Fe
2O
3 0.1%
CaO 0.02%
MgO 0.05%
K
2O 0.03%
TiO
2+ ZrO
2Surplus.
The chemical percentage composition of lightweight alumina powder also can be as follows:
Al
2O
3 95.5%
SiO
2 0.3%
Fe
2O
3 0.08%
CaO 0.01%
MgO 0.02%
K
2O 0.03%
TiO
2+ ZrO
2Surplus.
Claims (3)
1. the box insulation annealing mode of an aluminum oxide fused cast refractories, it is characterized in that before casting, casting mold being seated in the insulation can, in the bottom of insulation can and on every side with the filling of lightweight alumina powder, after the casting, directly continue to cover the lightweight alumina powder again at the casting mold top and carry out insulation annealing.
2. the box insulation annealing mode of aluminum oxide fused cast refractories according to claim 1 is characterized in that the chemical percentage composition of lightweight alumina powder is:
Al
2O
3 ≥?95%
SiO
2 ≤?0.3%
Fe
2O
3 ≤?0.1%
CaO ≤?0.02%
MgO ≤?0.05%
K
2O ≤?0.03%
TiO
2+ ZrO
2Surplus.
3. the box insulation annealing mode of aluminum oxide fused cast refractories according to claim 2, the particle diameter that it is characterized in that the lightweight alumina powder are 20-100 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010557113 CN102060552B (en) | 2010-11-24 | 2010-11-24 | Box-type heat insulating and annealing way of aluminum oxide electric smelting brick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010557113 CN102060552B (en) | 2010-11-24 | 2010-11-24 | Box-type heat insulating and annealing way of aluminum oxide electric smelting brick |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102060552A true CN102060552A (en) | 2011-05-18 |
| CN102060552B CN102060552B (en) | 2013-08-07 |
Family
ID=43996078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010557113 Active CN102060552B (en) | 2010-11-24 | 2010-11-24 | Box-type heat insulating and annealing way of aluminum oxide electric smelting brick |
Country Status (1)
| Country | Link |
|---|---|
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1210837A (en) * | 1998-08-06 | 1999-03-17 | 中国建筑材料科学研究院 | Insulation annealing technology and device for casting alpha-beta A1203 refractory material |
| CN101648811A (en) * | 2009-09-04 | 2010-02-17 | 郑州新光色耐火材料有限公司 | Manufacture method of fused cast zirconia-alumina brick |
| US7700054B2 (en) * | 2006-12-12 | 2010-04-20 | Hitachi Kokusai Electric Inc. | Substrate processing apparatus having gas side flow via gas inlet |
-
2010
- 2010-11-24 CN CN 201010557113 patent/CN102060552B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1210837A (en) * | 1998-08-06 | 1999-03-17 | 中国建筑材料科学研究院 | Insulation annealing technology and device for casting alpha-beta A1203 refractory material |
| US7700054B2 (en) * | 2006-12-12 | 2010-04-20 | Hitachi Kokusai Electric Inc. | Substrate processing apparatus having gas side flow via gas inlet |
| CN101648811A (en) * | 2009-09-04 | 2010-02-17 | 郑州新光色耐火材料有限公司 | Manufacture method of fused cast zirconia-alumina brick |
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| Publication number | Publication date |
|---|---|
| CN102060552B (en) | 2013-08-07 |
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Address after: 255200 Shandong Province, Zibo city Boshan District Five Road No. 60 Patentee after: Zibo Aijiexu Corundum Material Co., Ltd. Address before: 255200 Shandong Province, Zibo city Boshan District Five Road No. 60 Patentee before: Zibo Xuxiaozi Corundum Material Co., Ltd. |