CN101671167A - Method for producing fused zirconia corundum products by using low grade zircon sands - Google Patents
Method for producing fused zirconia corundum products by using low grade zircon sands Download PDFInfo
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- CN101671167A CN101671167A CN200910172328A CN200910172328A CN101671167A CN 101671167 A CN101671167 A CN 101671167A CN 200910172328 A CN200910172328 A CN 200910172328A CN 200910172328 A CN200910172328 A CN 200910172328A CN 101671167 A CN101671167 A CN 101671167A
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- zircon sand
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- zirconium corundum
- raw materials
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Abstract
The invention discloses a method for producing fused zirconia corundum products by using low grade zircon sands and the products are prepared from the following components in parts by weight: 50-80 parts of zircon sands with the zirconium content below 64%, 35-50 parts of alumina powder, 1-15 parts of carbon material and 0.2-1.5 parts of sodium carbonate. The preparation method comprises the following steps: 1. weighting zircon sands, alumina powder and carbon material, mixing the materials evenly, adding in an electric furnace where the pressure is 70-250V and the temperature is 1700-2100 DEGC, performing submerged arc melting of molten raw materials at high temperature, sampling and measuring to ensure that the related components in solution reach the standard, completing the refining;2. adding sodium carbonate raw material in the solution, raising the pressure to 240V-400V, arcing long arc in the furnace to form an oxidation environment, performing oxygen refining and completing the refining when test shows that the fused zirconia corundum products reach the colour standard; and 3. casting the qualified solution obtained in the step 2 in prefabricated mould cavities, keeping temperature and finally cooling to obtain the desired fused zirconia corundum products.
Description
Technical field
The present invention relates to utilize natural mineral raw to produce the method for electric fused zirconium corundum goods, especially relate to a kind of method of utilizing low-grade zircon sand to produce the electric fused zirconium corundum goods.
Background technology
The electric fused zirconium corundum goods are the important foundation materials that are used for various glass and glasswork kiln, the parts at wear-resisting position when also being used for simultaneously a lot of industrial equipments starting material and carrying.Along with the development of national economy and related industries, the demand of the zircon corundum goods that glass and glasswork kiln are used presents the impetus of steady-state growth always, but traditional raw material configuration and complete processing are but continued to use in the production of zircon corundum goods always.The raw materials for production of known electric fused zirconium corundum goods mainly are to adopt highly purified commercial alumina powder and high-grade zircon sand (zirconic content is greater than 65% in the zircon sand) etc., because the reserves of China's higher-grade zircon sand are limited, most of raw material all needs from external (as Australia, New Zealand, South Africa, countries such as Brazil) import, simultaneously because the requirement of goods Chemical Composition standard, also need to add the deficiency that a large amount of expensive desilicated zirconias or zirconium white are regulated zirconia content in the goods, these have all increased the production cost of electric fused zirconium corundum goods greatly.
Summary of the invention
The object of the present invention is to provide a kind of alternative higher-grade zircon sand to utilize low-grade zircon sand to produce the method for electric fused zirconium corundum goods.
For achieving the above object, the present invention can take following technical proposals:
The method of utilizing low-grade zircon sand to produce the electric fused zirconium corundum goods of the present invention, it is to be lower than 64% zircon sand raw material 50-80 weight part, commercial alumina powder 35-50 weight part, carbon raw materials 1-15 weight part and yellow soda ash 0.2-1.5 weight part and to be prepared from according to following step by containing the zirconium amount:
The first step takes by weighing zircon sand, aluminum oxide powder and carbon raw materials according to the above ratio, joins in the three-phase furnace after mixing, voltage control is at 70V-250V, temperature is controlled at 1700-2100 ℃, and above-mentioned raw materials submerged arc under high temperature fused state melts the concurrent former reaction of surviving, Al in the sampling and measuring solution
2O
3=41-51%, ZrO
2=32-43%, SiO
2≤ 16%, Na
2O≤1.5%, foreign matter content≤2.5% o'clock melting finishes;
Second step, in the above-mentioned solution for preparing, add the yellow soda ash raw material, then voltage is increased to 240V-400V, elongate arc and make formation well-oxygenated environment in the stove, and oxygen is robbed insertion solution carry out the oxygen blast refining, with being stained with the detection of taking a sample of rod mode, finish refining when meeting the color and luster standard of electric fused zirconium corundum product;
In the 3rd step, the solution-cast that the second step refining is qualified through the insulation cooling, obtains required electric fused zirconium corundum goods in ready made mould cavity.
The composition of described zircon sand is ZrO
220%-64%, SiO
278%-35%, TiO
2≤ 0.4%, Fe
2O
3≤ 0.75%, surplus is an impurity.
The composition of described commercial alumina powder is Al
2O
398.5%, SiO
2≤ 0.8%, Fe
2O
3≤ 0.02%, TiO
2≤ 0.01%, all the other are impurity.
The composition of described carbon raw materials is C 50-100%, SiO
20-50%.
The granularity of described zircon sand is 0.1-5mm, and the granularity of described carbon raw materials is 0.1-5mm.
The invention has the advantages that and utilize low-grade zircon sand to be raw material, the electric fused zirconium corundum goods that the direct production high-quality is qualified, not only reduced the production cost of electric fused zirconium corundum goods industries, the utilization ratio and the added value of low-grade zircon sand have been improved, also reduced the energy consumption in whole industry chain zirconium white and the desilicated zirconia production process, for making rational use of resources, realize that human society reduces discharging energy-conservation strategic objective and has crucial meaning.
Embodiment
The method of utilizing low-grade zircon sand to produce the electric fused zirconium corundum goods of the present invention, it is to be ZrO by composition
220%-64%, SiO
278%-35%, TiO
2≤ 0.4%, Fe
2O
3≤ 0.75%, surplus is that low-grade zircon sand raw material 620kg (granularity is 0.1-0.5mm), the composition of impurity is Al
2O
398.5%, SiO
20.8%, Fe
2O
30.02%, TiO
20.01%, all the other commercial alumina powder 450kg, compositions for impurity are C 50-100%, SiO
2The graphite of 0-50% (also can with raw coal, refinery coke etc.) 21kg (granularity is 0.1-5mm) and yellow soda ash 15kg are prepared from according to following step:
The first step, take by weighing zircon sand, aluminum oxide powder and graphite by above-mentioned weight, after mixing, its partially mixed material is placed the three-phase furnace shop fixtures, and the starting the arc of switching on then progressively adds in batches carries out the submerged arc fusing, and the voltage control of three-phase furnace is at 70V-250V, temperature is controlled at 1700-2100 ℃, treat that the interior compound of stove adds remaining compound gradual slow in the stove, and make formation reducing atmosphere in the stove again when being fused into liquid fully, its reaction formula is: 6SiO
2+ 3C=6SiO ↑+3CO
2↑, owing to two kinds of materials that generate all are gas and are suitable for volatilization, so the solution purity in the electric furnace is easy to realize; Al in the sampling and measuring solution
2O
3=(49.5 ± 1) %, ZrO
2=(33.8 ± 1) %, SiO
2Melting in≤14.5% o'clock finishes;
Second step added the yellow soda ash raw material in the above-mentioned solution for preparing, make itself and the interior SiO of stove
2The generation glassy phase reacts, then voltage is increased to 240V-400V, elongate arc and make and form well-oxygenated environment in the stove, oxygen pressure is controlled in the scope of 0.01MPa-1.5MPa oxygen robbed and inserts solution and carry out the oxygen blast refining, to remove residual carbon and the low melting component in the solution; With being stained with the detection of taking a sample of rod mode, finish refining when meeting the color and luster standard of electric fused zirconium corundum product;
In the 3rd step, the solution-cast that the second step refining is qualified through the insulation cooling, obtains required electric fused zirconium corundum goods in ready made mould cavity.
Chemical ingredients according to the electric fused zirconium corundum goods of the inventive method gained is:
| ??Al 2O 3 | ??ZrO 2 | ??SiO 2 | ??Na 2O | ??Fe 2O 3TiO 2 | Other impurity |
| ??49.5％ | ??33.8％ | ??14.5％ | ??1.26％ | ??0.25％ | ??0.69％ |
The employing aforesaid method if produce 33# zircon corundum goods, only needs Al in the interior solution of control stove
2O
3=(47 ± 1) %, ZrO
2=(33 ± 1) %, SiO
2≤ 16%, Na
2O≤5%, foreign matter content≤2.5% gets final product.
If produce 36# zircon corundum goods, only need Al in the interior solution of control stove
2O
3=(46 ± 1) %, ZrO
2=(36 ± 1) %, SiO
2≤ 14%, Na
2O≤1.5%, foreign matter content≤2.5% gets final product.
If produce 41# zircon corundum goods, only need Al in the interior solution of control stove
2O
3=(42.5 ± 1) %, ZrO
2=(41 ± 1) %, SiO
2≤ 13%, Na
2O≤1.3%, foreign matter content≤2.0% gets final product.
Claims (5)
1, a kind of method of utilizing low-grade zircon sand to produce the electric fused zirconium corundum goods is characterized in that: it is to be lower than 64% zircon sand raw material 50-80 weight part, commercial alumina powder 35-50 weight part, carbon raw materials 1-15 weight part and yellow soda ash 0.2-1.5 weight part and to be prepared from according to following step by containing the zirconium amount:
The first step takes by weighing zircon sand, aluminum oxide powder and carbon raw materials according to the above ratio, joins in the three-phase furnace after mixing, voltage control is at 70V-250V, temperature is controlled at 1700-2100 ℃, and above-mentioned raw materials submerged arc under high temperature fused state melts the concurrent former reaction of surviving, Al in the sampling and measuring solution
2O
3=41-51%, ZrO
2=32-43%, SiO
2≤ 16%, Na
2O≤1.5%, foreign matter content≤2.5% o'clock melting finishes;
Second step, in the above-mentioned solution for preparing, add the yellow soda ash raw material, then voltage is increased to 240V-400V, elongate arc and make formation well-oxygenated environment in the stove, and oxygen is robbed insertion solution carry out the oxygen blast refining, with being stained with the detection of taking a sample of rod mode, finish refining when meeting the color and luster standard of electric fused zirconium corundum product;
In the 3rd step, the solution-cast that the second step refining is qualified through the insulation cooling, obtains required electric fused zirconium corundum goods in ready made mould cavity.
2, the method for utilizing low-grade zircon sand to produce the electric fused zirconium corundum goods according to claim 1, it is characterized in that: the composition of described zircon sand is ZrO
220%-64%, SiO
278%-35%, TiO
2≤ 0.4%, Fe
2O
3≤ 0.75%, surplus is an impurity.
3, the method for utilizing low-grade zircon sand to produce the electric fused zirconium corundum goods according to claim 1, it is characterized in that: the composition of described commercial alumina powder is: Al
2O
398.5%, SiO
2≤ 0.8%, Fe
2O
3≤ 0.02%, TiO
2≤ 0.01%, all the other are impurity.
4, the method for utilizing low-grade zircon sand to produce the electric fused zirconium corundum goods according to claim 1, it is characterized in that: the composition of described carbon raw materials is C 50-100%, SiO
20-50%.
5, the method for utilizing low-grade zircon sand to produce the electric fused zirconium corundum goods according to claim 1, it is characterized in that: the granularity of described zircon sand is 0.1-5mm, the granularity of described carbon raw materials is 0.1-5m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101723280A CN101671167B (en) | 2009-09-29 | 2009-09-29 | Method for producing fused zirconia corundum products by using low grade zircon sands |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101723280A CN101671167B (en) | 2009-09-29 | 2009-09-29 | Method for producing fused zirconia corundum products by using low grade zircon sands |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101671167A true CN101671167A (en) | 2010-03-17 |
| CN101671167B CN101671167B (en) | 2011-12-14 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102875173A (en) * | 2012-10-19 | 2013-01-16 | 郑州振中电熔锆业有限公司 | Method for purifying ground zircon corundum brick powder |
| CN102898161A (en) * | 2012-10-19 | 2013-01-30 | 郑州振中电熔锆业有限公司 | Purification method for abandoned zirconia alumina refractory brick |
| CN106477627A (en) * | 2016-09-20 | 2017-03-08 | 中南大学 | A kind of alkali fusion method of continuous decomposition zircon sand |
| CN107285747A (en) * | 2017-06-15 | 2017-10-24 | 郑州威源新材料有限公司 | A kind of production technology of fused alumina zirconia abrasive material |
| CN111943698A (en) * | 2020-08-19 | 2020-11-17 | 梅河口市德成耐火材料有限公司 | Surface layer refractory material of precision casting wax mould |
| CN112062558A (en) * | 2020-08-03 | 2020-12-11 | 山东金三河新材料科技有限公司 | Preparation method of zirconia ceramic |
Family Cites Families (3)
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| CN1548214A (en) * | 2003-05-07 | 2004-11-24 | 胡福贵 | Prepn of porous zirconia corundum filter |
| CN100387546C (en) * | 2003-05-09 | 2008-05-14 | 郑州大学 | Method for preparing alumine base electric fused zirconium corundum |
| CN1328172C (en) * | 2004-06-25 | 2007-07-25 | 郑州振中电熔锆业有限公司 | Process for preparing high-purity zirconium dioxide |
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2009
- 2009-09-29 CN CN2009101723280A patent/CN101671167B/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102875173A (en) * | 2012-10-19 | 2013-01-16 | 郑州振中电熔锆业有限公司 | Method for purifying ground zircon corundum brick powder |
| CN102898161A (en) * | 2012-10-19 | 2013-01-30 | 郑州振中电熔锆业有限公司 | Purification method for abandoned zirconia alumina refractory brick |
| CN102898161B (en) * | 2012-10-19 | 2014-08-13 | 郑州振中电熔新材料有限公司 | Purification method for abandoned zirconia alumina refractory brick |
| CN102875173B (en) * | 2012-10-19 | 2014-08-27 | 郑州振中电熔新材料有限公司 | Method for purifying ground zircon corundum brick powder |
| CN106477627A (en) * | 2016-09-20 | 2017-03-08 | 中南大学 | A kind of alkali fusion method of continuous decomposition zircon sand |
| CN106477627B (en) * | 2016-09-20 | 2018-01-09 | 中南大学 | A kind of alkali fusion method of continuous decomposition zircon sand |
| CN107285747A (en) * | 2017-06-15 | 2017-10-24 | 郑州威源新材料有限公司 | A kind of production technology of fused alumina zirconia abrasive material |
| CN107285747B (en) * | 2017-06-15 | 2020-07-14 | 郑州威源新材料有限公司 | Production process of corundum-zirconia abrasive |
| CN112062558A (en) * | 2020-08-03 | 2020-12-11 | 山东金三河新材料科技有限公司 | Preparation method of zirconia ceramic |
| CN112062558B (en) * | 2020-08-03 | 2021-06-29 | 山东金三河新材料科技有限公司 | Preparation method of zirconia ceramic |
| CN111943698A (en) * | 2020-08-19 | 2020-11-17 | 梅河口市德成耐火材料有限公司 | Surface layer refractory material of precision casting wax mould |
| CN111943698B (en) * | 2020-08-19 | 2021-02-19 | 梅河口市德成耐火材料有限公司 | Surface layer refractory material of precision casting wax mould |
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|---|---|
| CN101671167B (en) | 2011-12-14 |
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