CN100387546C - Method for preparing alumine base electric fused zirconium corundum - Google Patents
Method for preparing alumine base electric fused zirconium corundum Download PDFInfo
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- CN100387546C CN100387546C CNB031261477A CN03126147A CN100387546C CN 100387546 C CN100387546 C CN 100387546C CN B031261477 A CNB031261477 A CN B031261477A CN 03126147 A CN03126147 A CN 03126147A CN 100387546 C CN100387546 C CN 100387546C
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- corundum
- alumine
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- carbon materials
- zircon
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Abstract
The present invention provides a method for preparing a synthetic material of bauxite base and electric-fused zirconium corundum. The present invention is characterized in that natural hard bauxite and zirconium quartz sand are used as raw materials, and carbon materials, iron dust and boracic acid are used as auxiliary materials. The present invention adopts the technology of two-step reduction smelting and one-step oxidation refining. The performance of the synthetic material obtained by the method of the present invention is higher than or equal to the performance of similar products. The present invention has the advantages that the production cost is decreased obviously, and the added value and the utilization ratio of the bauxite product can be raised greatly.
Description
Affiliated field:
The present invention relates to a kind of preparation method of refractory materials, be specifically related to alumina-base fused zircon corundum preparation methods.
Background technology:
Electric fused zirconium corundum, have good resistance to fouling and thermal shock resistance, be the important source material of the efficient refractory product of preparation (as aluminum-zirconium-carbon slide, the mouth of a river etc.), can obviously improve the performance of goods, the application in metallurgical industry and other hot industries has obtained good effect.But the electric fused zirconium corundum synthetic material all is that the expensive industrial alundum of employing, zirconium white (desilicated zirconia) are raw material at present, has influenced its widespread use to a certain extent.In state-owned abundant alumine resource, but because composition is even inadequately, the quality instability not only can't satisfy the demand of special refractories, the selling price on the world market is also far below the Similar types of materials of countries such as Guyana, Brazil.If with alumine and zircon sand etc. is raw material, the technology through suitable is translated into the electric fused zirconium corundum synthetic material, can satisfy the requirement at domestic and international pyrotic smelting key problem in technology position.Not only can make full use of the alumine resources advantage of China, reduce production costs, reduce the consumption costs of hot industry, but also can greatly improve the added value of alumina with refractory materials.
By patent searching and document, still finding no with natural alumine and zircon sand is the method for feedstock production electric fused zirconium corundum synthetic material.
Summary of the invention:
The object of the present invention is to provide a kind of cheap natural alumine and zircon sand of utilizing to be the method for feedstock production electric fused zirconium corundum synthetic material, thereby reduce the added value of the production cost and the raising alumine of electric fused zirconium corundum for raw material replaces expensive industrial alundum, zirconium white (desilicated zirconia).
Technical scheme of the present invention is:
A. with alumine, carbon materials and iron filings are by 100: 5-10: the proportioning of 8-15 mixes, and joins in the three-phawse arc furnace, voltage control is at 90-135V, the submerged arc reduction removes silicon-dioxide and impurity in the alumina under high temperature fused state, makes Al in the corundum melt
2O
3Content reaches 95-99%;
B. control electric arc furnace voltage at 130-150V, will be by mass ratio 100: 8-15: the zircon sand of 0.5-2 proportioning, carbon materials and mebor progressively add in the above-mentioned corundum solution, submerged arc melting, reduction under the condition of high temperature, remove the silicon-dioxide in the zircon sand, make Al in the liquation
2O
3+ ZrO
2Content reaches 96-99%;
C. improve electric arc furnace voltage to 140-160V, make electrode break away from liquid level a little, under the high temperature oxidation state, small portion of residual carbon is removed in long arc oxidation refining 30-90 minute, finishes concisely, pours out cooling, promptly makes alumina-base fused zircon corundum material.
In above-mentioned alumina-base fused zircon corundum preparation method: the main component of alumine is: Al
2O
383-93%, SiO
25-10%, TiO
22-5%, granularity is 10-30mm; Carbon materials is coal or coke or graphite, and fixation of C is 75-85%, and ash is 10-20%, and granularity is 2-5mm; Fe content is 85-95% in the iron filings, and length is 10-200mm; ZrO in the zircon sand
2Be 64-67%, granularity is 0.1-1mm; Boric acid is technical grade, H
3BO
3Be 99-100%
In above-mentioned vanadine base electric fused zirconium corundum preparation process, the melt temperature of a step is 2000-2300 ℃; The melt temperature of b step is 2300-2500 ℃; The oxidation refining temperature of c step is 2300-2550 ℃.
Compared with prior art, the invention has the advantages that:
1, the present invention is a raw material with alumine cheap and easy to get and zircon sand, replace expensive alundum and zirconium white (desilicated zirconia), reduced the manufacturing cost of electric fused zirconium corundum synthetic material effectively, and then can reduce the consumption costs of hot industry with refractory materials.
2, the electric fused zirconium corundum with the present invention's preparation has good characteristic, and its chemical constitution is Al
2O
3+ ZrO
2＞97%,, ZrO
2＞23%, SiO
2＜0.5%.Phase composite is the corundum phase, monocline zirconium phase.Volume density＞4.3g/cm
3, apparent porosity＜5% can be widely used in hot industry.
3, can make full use of the alumine resources advantage of China with the present invention, greatly improve the added value of alumina.
Embodiment:
Embodiment
Raw material: alumine: Al
2O
389.76%, SiO
23.83%, Fe
2O
30.87%, TiO
2, 4.13%
Zircon sand: ZrO
2Content is 65.5%
Alumine 100Kg, hard coal 6.5Kg, iron filings 9Kg are mixed.In three-phawse arc furnace, compound shop furnace bottom, the voltage 90V starting the arc adds the compound melting then in batches, and the submerged arc reaction is 60 minutes under about 2100 ℃ of high temperature fused states, and reduction removes silicon-dioxide and impurity in the alumina gradually, makes Al in the corundum melt
2O
3Content is greater than 96%.Observe the melting situation in this stage by being stained with rod;
Control electric arc furnace voltage makes solution temperature reach 2300 ℃ at 135V, and zircon sand 48Kg, coke grain 6Kg and boric acid 0.5Kg are mixed, under the submerged arc condition, in 70 minutes, compound is added to melting in the above-mentioned corundum melt in batches, removes the silicon-dioxide in the zircon sand, make Al in the liquation
2O
3+ ZrO
2Content is greater than 97%;
Improve electric arc furnace voltage to 145V, make electrode break away from liquid level a little, be the long arc state, liquation is remained on be higher than 2300 ℃ high temperature oxidation state, refining 50 minutes, remove small portion of residual carbon after, finish concisely, pour out cooling.
The alumina-base fused zircon corundum material chemical composition of gained (mass percent) is:
| Al 2O 3 | ZrO 2 | SiO 2 | TiO 2 | Fe 2O 3 |
| 71.05％ | 27.44％ | 0.34％ | 0.52％ | 0.02％ |
Claims (1)
1. the preparation method of alumina-base fused zircon corundum is a raw material with alumine, zircon sand, carbon materials, iron filings, boric acid, it is characterized in that:
A. with alumine, carbon materials and iron filings are by 100: 5-10: the proportioning of 8-15 mixes, and joins in the three-phawse arc furnace, voltage control is at 90-135V, the submerged arc reduction removes silicon-dioxide and impurity in the alumina under high temperature fused state, makes Al in the corundum melt
2O
3Content reaches 95-99%,
B. control electric arc furnace voltage at 130-150V, will be by mass ratio 100: 8-15: the zircon sand of 0.5-2 proportioning, carbon materials and mebor progressively add in the above-mentioned corundum solution, submerged arc melting, reduction under the condition of high temperature, remove the silicon-dioxide in the zircon sand, make Al in the liquation
2O
3+ ZrO
2Content reaches 96-99%,
C. improve electric arc furnace voltage to 140-160V, make electrode break away from liquid level a little, under the high temperature oxidation state, small portion of residual carbon is removed in long arc oxidation refining 30-90 minute, finishes concisely, pours out cooling, promptly makes alumina-base fused zircon corundum material,
In above-mentioned alumina-base fused zircon corundum preparation method, the main component of alumine is: Al
2O
383-93%, SiO
25-10%, TiO
22-5%, granularity is 10-30mm; Carbon materials is a hard coal in a step, and carbon materials is a coke grain in the b step, and fixation of C is 75-85%, and ash is 10-20%, and granularity is 2-5mm; Fe content is 85-95% in the iron filings, and length is 10-200mm; ZrO in the zircon sand
2Be 64-67%, granularity is 0.1-1mm; Boric acid is technical grade, H
3BO
3Be 99-100%,
In above-mentioned vanadine base electric fused zirconium corundum preparation method, the melt temperature of a step is 2000-2300 ℃, and the melt temperature of b step is 2300-2500 ℃, and the oxidation refining temperature of c step is 2300-2550 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031261477A CN100387546C (en) | 2003-05-09 | 2003-05-09 | Method for preparing alumine base electric fused zirconium corundum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031261477A CN100387546C (en) | 2003-05-09 | 2003-05-09 | Method for preparing alumine base electric fused zirconium corundum |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1483701A CN1483701A (en) | 2004-03-24 |
| CN100387546C true CN100387546C (en) | 2008-05-14 |
Family
ID=34153046
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|---|---|---|---|
| CNB031261477A Expired - Fee Related CN100387546C (en) | 2003-05-09 | 2003-05-09 | Method for preparing alumine base electric fused zirconium corundum |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109233339A (en) * | 2017-05-08 | 2019-01-18 | 三祥新材股份有限公司 | In the production method of the zircon-vanadium blue pigment of green tune blue |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101671167B (en) * | 2009-09-29 | 2011-12-14 | 侯松发 | Method for producing fused zirconia corundum products by using low grade zircon sands |
| CN101768004B (en) * | 2010-01-19 | 2012-11-14 | 郑州华宇高炉工程技术有限公司 | Low-pore in situ oriental topaz brick and preparation method thereof |
| CN104446533B (en) * | 2014-11-04 | 2016-05-18 | 河南红然铝业有限公司 | A kind of bauxite frit and preparation method thereof |
| CN105110775B (en) * | 2015-09-21 | 2017-07-25 | 郑州远东耐火材料有限公司 | A kind of Corhart Zac-block is anti-cold to split production method |
| CN114686169B (en) * | 2022-03-31 | 2023-08-11 | 南平市亿泽磨料磨具科技有限公司 | Corundum abrasive treatment process |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1162580A (en) * | 1996-12-23 | 1997-10-22 | 唐山市燕山产业有限公司 | Wear resistant sintered zirconium boule composite and manufacture thereof |
| CN1322696A (en) * | 2001-07-03 | 2001-11-21 | 郑州东方企业(集团)股份有限公司 | Zircon corundum product produced by mixing high-purity material and secondary cast material and its production process |
-
2003
- 2003-05-09 CN CNB031261477A patent/CN100387546C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1162580A (en) * | 1996-12-23 | 1997-10-22 | 唐山市燕山产业有限公司 | Wear resistant sintered zirconium boule composite and manufacture thereof |
| CN1322696A (en) * | 2001-07-03 | 2001-11-21 | 郑州东方企业(集团)股份有限公司 | Zircon corundum product produced by mixing high-purity material and secondary cast material and its production process |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109233339A (en) * | 2017-05-08 | 2019-01-18 | 三祥新材股份有限公司 | In the production method of the zircon-vanadium blue pigment of green tune blue |
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|---|---|
| CN1483701A (en) | 2004-03-24 |
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