CN103553575A - Ceramic raw material obtained by spherically calcining powder - Google Patents
Ceramic raw material obtained by spherically calcining powder Download PDFInfo
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- CN103553575A CN103553575A CN201310497330.1A CN201310497330A CN103553575A CN 103553575 A CN103553575 A CN 103553575A CN 201310497330 A CN201310497330 A CN 201310497330A CN 103553575 A CN103553575 A CN 103553575A
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Abstract
The invention provides a ceramic raw material obtained by spherically calcining powder. A preparation method of the ceramic raw material comprises the following steps: step 1, finely grinding industrial aluminum oxide powder until the fineness is within 1mm; step 2, adding a binder to the ground powder, uniformly mixing, rolling the mixture through a rolling ball forming mill to obtain a spherical body which is 15-20mm in diameter; step 3, feeding the rolled spherical material into a tunnel kiln through a way of burning in a refractory slab, and calcining the spherical material, wherein the calcining temperature in the tunnel kiln is 1250 DEG C; step 4, dispersing and grinding the calcined material into fine powder, thus obtaining the alpha aluminum oxide superfine powder ceramic raw material. The ceramic raw material superfine powder produced by the method can be used for effectively controlling the content of aluminum oxide and bringing about benefit for optimizing the product quality; meanwhile, the prepared spherical material is high in specific weight, thus improving the yield.
Description
Technical field
The present invention relates to a kind of working method of ceramic raw material, a kind of specifically powder is made to the ceramic raw material that spherical calcining is obtained.
Background technology
Aluminum oxide is the main raw material of Production of Ceramics, its physical strength is high, hardness is good, the advantage such as corrosion-resistant is widely used in metallurgy, the field such as chemical industry and space flight, but the fine powder difficulty of processing of ceramic raw material is larger, traditional method is first commercial alumina to be shaped to adobe shape by grinding to calcine and obtain again, this traditional method is owing to will being shaped to adobe shape, volume is larger, during calcining, must could calcine by pile, in calcination process, easily in the condition of high temperature, there is kiln collapse, and cause damage, and this stacking method effort of taking a lot of work, directly affect output, moreover, the material body of adobe shape is larger, also the volatilization of sodium oxide in unfavorable calcination process, cannot improve the quality of alumina material raw material, the quality level that directly affects ceramic product improves.
Summary of the invention
The invention provides and a kind of powder is made to the ceramic raw material that spherical calcining is obtained, there is the distinguishing feature that can improve quality and improve output.
The present invention includes industrial technical grade aluminum oxide powder is ground, the concrete grammar adopting is as follows:
Ceramic raw material preparation method minute following steps are carried out:
Step 1, technical grade aluminum oxide powder is carried out to fine grinding, fineness is reached in 1 micron;
Step 2, add binding agent to mix the powder after above-mentioned grinding to adopt Rollig nodulizer to be rolled onto the spheroid of diameter 15～20mm;
Step 3, adopt refractory slab dress firing method to send in tunnel furnace spheroid material after rolling to calcine, in tunnel furnace, calcining temperature is controlled at 1250 ℃;
Step 4, the material after above-mentioned calcining is carried out to dispersion grinding become fine powder, become alpha's aluminium sesquioxide fine powder ceramic raw material.
In technique scheme: the binding agent in step 2 is mixed with clear water 10% by polyvinyl alcohol 5% to heat to 60 ℃ and is prepared from.
The present invention compared with prior art, has following significant advantage:
The one, owing to it need being made for to the ball shape of 15～20mm by additive, volume is little, sodium oxide volatilization in favourable calcination process in commercial alumina, can make thus content effectively be controlled at the optimum range below 0.06%, the raising optimization of favourable ceramic product oeverall quality, reduces by 40% than conventional art Schwellenwert 0.1%;
The 2nd, spherical body is than great, when burning is piled up, can strengthen per unit area yield, both favourable raising output thus, and favourable reduction energy consumption, compares with conventional art through experiment again, and in equal kiln, output can improve more than 40%;
The 3rd, technological process is simple, has exempted in traditional technology the time-consuming trouble of adobe shape calcining pile, favourable reduction manufacturing cost and enhancing productivity.
Embodiment
Embodiment 1:
Ceramic raw material preparation method minute following steps are carried out:
Step 1, technical grade aluminum oxide powder is carried out to fine grinding, fineness is reached in 1 micron; Step 2, add binding agent to mix the powder after above-mentioned grinding to adopt Rollig nodulizer to be rolled onto the spheroid of diameter 15mm; Step 3, adopt refractory slab dress firing method to send in tunnel furnace spheroid material after rolling to calcine, in tunnel furnace, calcining temperature is controlled at 1250 ℃; Step 4, the material after above-mentioned calcining is carried out to dispersion grinding become fine powder, become alpha's aluminium sesquioxide fine powder ceramic raw material.
Binding agent in step 2 is mixed with clear water 10% by polyvinyl alcohol 5% to heat to 60 ℃ and is prepared from.
Embodiment 2:
Ceramic raw material preparation method minute following steps are carried out:
Step 1, technical grade aluminum oxide powder is carried out to fine grinding, fineness is reached in 1 micron; Step 2, add binding agent to mix the powder after above-mentioned grinding to adopt Rollig nodulizer to be rolled onto the spheroid of diameter 18mm; Step 3, adopt refractory slab dress firing method to send in tunnel furnace spheroid material after rolling to calcine, in tunnel furnace, calcining temperature is controlled at 1250 ℃; Step 4, the material after above-mentioned calcining is carried out to dispersion grinding become fine powder, become alpha's aluminium sesquioxide fine powder ceramic raw material.
Binding agent in step 2 is mixed with clear water 10% by polyvinyl alcohol 5% to heat to 60 ℃ and is prepared from.
Embodiment 3:
Ceramic raw material preparation method minute following steps are carried out:
Step 1, technical grade aluminum oxide powder is carried out to fine grinding, fineness is reached in 1 micron; Step 2, add binding agent to mix the powder after above-mentioned grinding to adopt Rollig nodulizer to be rolled onto the spheroid of diameter 20mm; Step 3, adopt refractory slab dress firing method to send in tunnel furnace spheroid material after rolling to calcine, in tunnel furnace, calcining temperature is controlled at 1250 ℃; Step 4, the material after above-mentioned calcining is carried out to dispersion grinding become fine powder, become alpha's aluminium sesquioxide fine powder ceramic raw material.
Binding agent in step 2 is mixed with clear water 10% by polyvinyl alcohol 5% to heat to 60 ℃ and is prepared from.
Claims (2)
1. powder is made to the ceramic raw material that spherical calcining is obtained, is comprised industrial technical grade aluminum oxide powder is ground, it is characterized in that:
Ceramic raw material preparation method minute following steps are carried out:
Step 1, technical grade aluminum oxide powder is carried out to fine grinding, fineness is reached in 1 micron;
Step 2, add binding agent to mix the powder after above-mentioned grinding to adopt Rollig nodulizer to be rolled onto the spheroid of diameter 15～20mm;
Step 3, adopt refractory slab dress firing method to send in tunnel furnace spheroid material after rolling to calcine, in tunnel furnace, calcining temperature is controlled at 1250 ℃;
Step 4, the material after above-mentioned calcining is carried out to dispersion grinding become fine powder, become alpha's aluminium sesquioxide fine powder ceramic raw material.
2. according to claim 1 powder is made to the ceramic raw material that spherical calcining is obtained, it is characterized in that: the binding agent in step 2 is mixed with clear water 10% by polyvinyl alcohol 5% to heat to 60 ℃ and is prepared from.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310497330.1A CN103553575A (en) | 2013-10-22 | 2013-10-22 | Ceramic raw material obtained by spherically calcining powder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310497330.1A CN103553575A (en) | 2013-10-22 | 2013-10-22 | Ceramic raw material obtained by spherically calcining powder |
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| CN103553575A true CN103553575A (en) | 2014-02-05 |
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| CN201310497330.1A Pending CN103553575A (en) | 2013-10-22 | 2013-10-22 | Ceramic raw material obtained by spherically calcining powder |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115784280A (en) * | 2022-12-21 | 2023-03-14 | 江苏金石研磨有限公司 | Preparation method of low-cost nano alumina powder |
| CN116675520A (en) * | 2023-06-12 | 2023-09-01 | 陕西宝光陶瓷科技有限公司 | Preparation method of 7-13um particle size calcined alpha alumina powder and high-density ceramic |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1556064A (en) * | 2004-01-09 | 2004-12-22 | 洛阳中超铝业有限公司 | Clinker preparation method of sintering method aluminium oxide production technology |
| CN101182025A (en) * | 2007-11-28 | 2008-05-21 | 蹬口县欧凯红柱石矿业有限公司 | Method for preparing chemical aluminum oxide by using andalusite as raw material |
| CN101585701A (en) * | 2009-06-22 | 2009-11-25 | 河南长兴实业有限公司 | Method for manufacturing superfine alpha-alumina powder suitable for various ceramic molding technics |
-
2013
- 2013-10-22 CN CN201310497330.1A patent/CN103553575A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1556064A (en) * | 2004-01-09 | 2004-12-22 | 洛阳中超铝业有限公司 | Clinker preparation method of sintering method aluminium oxide production technology |
| CN101182025A (en) * | 2007-11-28 | 2008-05-21 | 蹬口县欧凯红柱石矿业有限公司 | Method for preparing chemical aluminum oxide by using andalusite as raw material |
| CN101585701A (en) * | 2009-06-22 | 2009-11-25 | 河南长兴实业有限公司 | Method for manufacturing superfine alpha-alumina powder suitable for various ceramic molding technics |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115784280A (en) * | 2022-12-21 | 2023-03-14 | 江苏金石研磨有限公司 | Preparation method of low-cost nano alumina powder |
| CN116675520A (en) * | 2023-06-12 | 2023-09-01 | 陕西宝光陶瓷科技有限公司 | Preparation method of 7-13um particle size calcined alpha alumina powder and high-density ceramic |
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Application publication date: 20140205 |