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Sagger for calcining battery material and preparation method thereof

A battery material, roasting technology, applied in the direction of charge, lighting and heating equipment, charging processing types, etc., can solve the problems of corrosion resistance and energy saving not reaching the foreign level, and meet the fully automatic assembly line production mode, the overall strength is high. , good effect

Inactive Publication Date: 2017-11-24
宜兴市锦泰耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, domestic sagger manufacturers can basically meet the requirements of use, but they have not yet reached the foreign level in terms of corrosion resistance and energy saving. Some even use simple vibration molding technology, focusing on low-quality and low-price marketing methods.

Method used

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  • Sagger for calcining battery material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Mixing of ingredients

[0025] First, take 10 parts of 200-mesh cordierite fine powder, 15 parts of 325-mesh fused magnesia-aluminum spinel fine powder, 5 parts of sintering-promoting micropowder A, and 20 parts of clay into a double-cone mixer, and put zirconia Balls for fine powder pre-mixing. Then take 30 parts of cordierite with a particle size of 2-1, and 20 parts of cordierite with a particle size of 1-0, put them into the wheel mill and mix them for 3-5 minutes, add 3 parts of water, and knead again for 5 minutes, then Add about 1 part of pre-mixed fine powder and organic binder, and finally knead for about 25 minutes, then put it into a stainless steel bucket for aging.

[0026] Among them, in the sintering-promoting micropowder A, the particle size is 325 mesh spodumene powder and the particle size is 200 mesh lithium feldspar powder mass ratio is 4:6, add dispersant, put into polyurethane ball mill, add zirconia balls, according to the ball-to-material ra...

Embodiment 2

[0031] The steps are basically the same as in Example 1, the difference being:

[0032] 20 parts of cordierite with a particle size of 2-1, 25 parts of cordierite with a particle size of 1-0, 15 parts of cordierite fine powder of 200 mesh, 18 parts of fused magnesium aluminum spinel fine powder of 325 mesh, and sintering-promoting fine powder A 2 parts, the mass ratio of spodumene powder with a particle size of 325 mesh to lithium petalite powder with a particle size of 200 mesh in the sintering-promoting micropowder A is 1:1, and the maximum firing temperature is 1380°C.

Embodiment 3

[0034] The steps are basically the same as in Example 1, the difference being:

[0035] 25 parts of cordierite with a particle size of 2-1, 25 parts of cordierite with a particle size of 1-0, 12 parts of cordierite fine powder of 200 mesh, 15 parts of fused magnesia aluminum spinel fine powder of 325 mesh, and sintering-promoting fine powder A 3 parts, the mass ratio of spodumene powder with a particle size of 325 mesh to lithium petalite powder with a particle size of 200 mesh in the sintering-promoting micropowder A is 3:7, the molding pressure is 80MPA, and the maximum firing temperature is 1400°C.

[0036] The comparison of the setter physical properties obtained by the above examples is shown in Table 1:

[0037] Table 1 Physical performance test table of setter plate

[0038]

[0039] The present invention uses a lithium sintering agent, which mainly consists of two lithium micropowders. The low melting point of the micropowder is used to reduce the sintering tempera...

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Abstract

The invention relates to a sagger for calcining a battery material and a preparation method thereof, and belongs to the technical field of lithium batteries. The sagger comprises the following raw materials in parts by weight: 10-50 parts of cordierite with a particle size of 2 to 1, 10-40 parts of cordierite with a particle size of 1 to 0, 1-20 parts of 200-mesh cordierite fine powder, 1-25 parts of 325-mesh fused magnesia-alumina spinel fine powder, 1-5 parts of sintering-promoting micro powder, 1-30 part of clay and 0.1-2 parts of an organic binding agent. The sagger uses the sintering-promoting micro powder, the sintering-promoting micro powder comprises of a plurality of kinds of lithium fine powder, and has low melting point and small thermal expansion coefficient so as to reduce the firing temperature of the saggar; and a roller kiln is used for firing, after forming, the saggar is spread out and put into the roller kiln for sintering, after the firing, the bottom flatness effect of the sagger is better than that of the sagger which is sintered by vertically placed in a shuttle kiln, and a fully automated assembly line production mode of a user can be met.

Description

technical field [0001] The invention relates to a sagger for roasting battery materials and a preparation method thereof, belonging to the technical field of lithium batteries. Background technique [0002] A saggar is a vessel that can hold materials fired at high temperatures, and is designed into a shape corresponding to the material used for various firing needs. Lithium battery anode materials have particularly strict requirements on the corrosion resistance of the sagger during firing. After the sagger is corroded by the strong alkali of the anode material, it is easy to cause the surface layer to peel off and peel off to contaminate the anode material. Therefore improving the alkali corrosion resistance of the saggar has become an urgent problem to be solved by the producer, and also a problem to be solved by the user. At present, domestic lithium battery cathode material manufacturers mainly use ternary materials, lithium iron phosphate, lithium cobalt oxide, and li...

Claims

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Application Information

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IPC IPC(8): C04B35/195C04B35/636F27D5/00
CPCC04B35/195C04B35/6365C04B2235/3222C04B2235/3472C04B2235/349C04B2235/77C04B2235/96F27D5/0012F27M2003/04
Inventor 姜涛陈秀文
Owner 宜兴市锦泰耐火材料有限公司
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