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| Study of pressure alkaline leaching and atmospheric acid leaching process for graphite purification |
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Received:January 22, 2019
Revised:March 20, 2019
Accepted:March 25, 2019
Published Online:December 24, 2019
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| DOI： |
| KeyWord:aphanitic graphite, purification, pressure alkaline leaching, acid leaching, alkaline-acid process |
| Author | Institution |
| JiangYingping |
BGRIMM Technology Group |
| LiHe |
BGRIMM Technology Group |
| WangHaibei |
BGRIMM Technology Group |
| ChenLulu |
BGRIMM Technology Group |
| ZhangBangsheng |
BGRIMM Technology Group |
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| Abstract: |
| The pressure alkaline leaching and atmospheric acid leaching process is proposed in graphite purification and the effects of various factors were investigated. The results shows that the fix carbon content in graphite products after purified can reach 96% and more under the following conditions: pressure alkaline leaching for 1h with temperature of 200℃, alkali concentration of 250g/L, liquid/solid ration of 5:1 and concentrate granularity of P90 -45μm; atmospheric acid leaching with temperature of 80℃ and acid concentration of 2.16%. |
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