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Special sagger for sintering lithium battery positive electrode material and preparation method of sagger

A positive electrode material and lithium battery technology, applied in the field of refractory materials, can solve the problems of less use of saggers and high cost of saggers, achieve high economic value and reduce manufacturing costs

Pending Publication Date: 2019-12-06
湖南金铠新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a special saggar for sintering lithium battery positive electrode material and its preparation method to solve the problem that the saggar made of ordinary materials is less frequently used and the cost of saggar made of corrosion-resistant materials is high in the prior art To solve the technical problem, add a corrosion-resistant layer on the main body of the sagger, and increase the number of uses of the sagger to the greatest extent on the basis of a slight increase in cost

Method used

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  • Special sagger for sintering lithium battery positive electrode material and preparation method of sagger

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Embodiment 1

[0024] The special sagger for sintering lithium battery cathode materials includes a sagger main body and a corrosion-resistant layer integrally pressed and formed with the sagger main body at the bottom of the sagger main body; the corrosion-resistant layer includes the following raw materials: 1.5mm aluminum-magnesium tip 22% of spar, 20% of 0.5mm fused corundum, 16% of 325 mesh zirconia powder, 11% of 325 mesh kaolin powder, 20% of 5μ alumina powder, 5% of binder, and 6% of water; the main body of the sagger Including the following raw materials: 1.0mm cordierite 28%, 1.3mm sintered mullite 31%, 5μ alumina powder 15%, 325 mesh kaolin powder 15%, binder 5%, water 6%.

[0025] The above-mentioned preparation method for sagger special for sintering lithium battery cathode material comprises the following steps:

[0026] S1: Weigh the raw materials of corrosion-resistant layer, aluminum-magnesium spinel, fused corundum, zirconia powder, kaolin powder, alumina powder, and binder...

Embodiment 2

[0031] The special sagger for sintering lithium battery cathode materials includes a sagger main body and a bottom layer of the sagger main body provided with a corrosion-resistant layer integrally pressed and formed with the sagger main body; the corrosion-resistant layer includes the following raw materials: 0.1mm aluminum-magnesium tip 20% of spar, 15% of 1.0mm fused corundum, 18% of 325 mesh zirconia powder, 15% of 325 mesh kaolin powder, 23% of 5μ alumina powder, 2% of binder, and 7% of water; the main body of the sagger Including the following raw materials: 0.5mm cordierite 25%, 0.1mm sintered mullite 38%, 5μ alumina powder 10%, 325 mesh kaolin powder 18%, binder 2%, water 7%.

[0032] The above-mentioned preparation method for sagger special for sintering lithium battery cathode material comprises the following steps:

[0033] S1: Weigh the raw materials of corrosion-resistant layer, aluminum-magnesium spinel, fused corundum, zirconia powder, kaolin powder, alumina pow...

Embodiment 3

[0038] The special sagger for sintering lithium battery cathode materials includes a sagger main body and a corrosion-resistant layer integrally pressed and formed with the sagger main body at the bottom of the sagger main body; the corrosion-resistant layer includes the following raw materials: 0.5mm aluminum-magnesium tip 28% of spar, 19% of 0.1mm fused corundum, 10% of 325 mesh zirconia powder, 10% of 325 mesh kaolin powder, 25% of 5μ alumina powder, 3% of binder, and 5% of water; the main body of the sagger Including the following raw materials: 0.8mm cordierite 34%, 0.8mm sintered mullite 27%, 5μ alumina powder 12%, 325 mesh kaolin powder 19%, binder 3%, water 5%.

[0039] The above-mentioned preparation method for sagger special for sintering lithium battery cathode material comprises the following steps:

[0040] S1: Weigh the raw materials of corrosion-resistant layer, aluminum-magnesium spinel, fused corundum, zirconia powder, kaolin powder, alumina powder, and binder...

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Abstract

The invention provides a special sagger for sintering a lithium battery positive electrode material and a preparation method of the sagger, and belongs to the technical field of refractory materials.The special sagger for sintering the lithium battery positive electrode material comprises a sagger main body; a corrosion-resistant layer which is integrally formed by pressing together with the sagger main body is arranged on the bottom layer of the sagger main body; the thickness of the corrosion-resistant layer is 2-3mm; the corrosion-resistant layer comprises aluminum-magnesium spinel, fusedalumina, zirconia powder, kaolin powder, alumina powder, a binder and water; and the sagger main body comprises cordierite, sintered mullite, alumina powder, the kaolin powder, the binder and the water. According to the special sagger, the corrosion-resistant layer is additionally arranged at the inner bottom layer of an ordinary sagger, so that compared with the ordinary saggar, the production cost of the special sagger is only increased by 10-15%, and the use frequency of the special saggar can be improved by more than two times.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a special sagger for sintering lithium battery cathode materials and a preparation method thereof. Background technique [0002] Since lithium cobalt oxide, lithium manganese oxide and ternary lithium are roasted at a high temperature of about 1000°C and are highly corrosive, the pH value of the positive electrode material is > 11, which is highly alkaline. , so that the sagger for burning this raw material must have the special properties of high temperature resistance and corrosion resistance. At present, the ordinary saggers supplied at home and abroad are produced with cordierite and mullite as the main raw materials. Although the price is low, the number of uses is small, the scrapping is quick, and it is easy to cause pollution to the positive electrode material; The cost of saggers made of high-quality raw materials is high, and the price is mo...

Claims

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Application Information

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IPC IPC(8): C04B35/185C04B35/195C04B35/10C04B35/64F27D5/00B28B3/00
CPCB28B3/00C04B35/10C04B35/185C04B35/195C04B35/64C04B2235/3217C04B2235/3222C04B2235/3244C04B2235/349C04B2235/602F27D5/0012
Inventor 张毅贺辉华
Owner 湖南金铠新材料科技股份有限公司
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