Protection Technology of Large Scale Crystalline Graphite from Tanzania

LIU Lei; SUN Huaxing; GUO Lixiang; HUANG Junwei; ZHAO Hengqin

doi:10.13779/j.cnki.issn1001-0076.2023.03.011

2023 Vol. 43, No. 3

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Article navigation > Conservation and Utilization of Mineral Resources > 2023 > 43(3): 96-104

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LIU Lei, SUN Huaxing, GUO Lixiang, HUANG Junwei, ZHAO Hengqin. Protection Technology of Large Scale Crystalline Graphite from Tanzania[J]. Conservation and Utilization of Mineral Resources, 2023, 43(3): 96-104. doi: 10.13779/j.cnki.issn1001-0076.2023.03.011

Citation:

LIU Lei, SUN Huaxing, GUO Lixiang, HUANG Junwei, ZHAO Hengqin. Protection Technology of Large Scale Crystalline Graphite from Tanzania[J]. Conservation and Utilization of Mineral Resources, 2023, 43(3): 96-104. doi: 10.13779/j.cnki.issn1001-0076.2023.03.011

Protection Technology of Large Scale Crystalline Graphite from Tanzania

1.
Zhengzhou Institute of Multipurpose Utilization of Mineral Resources, CAGS, Zhengzhou 450006, China
2.
China National Engineering Research Center for Utilization of Industrial Minerals, Zhengzhou 450006, China

More Information

Corresponding author: SUN Huaxing, 2216228308@qq.com

Received Date: 20 February 2023

Publish Date: 15 June 2023

Abstract

Abstract

The fixed carbon content of a crystalline graphite ore from Tanzania is 3.74%, among of which the +147 µm size flake graphite accounts for 97.18%. In this paper, the different rough concentrates and further regrinding and reflotation tests between high pressure roller mill and ball mill were compared.The results showed that the effect of the new process of "particles bed comminution (high pressure roller mill)−grading and grading separation" was better. The regrinding of coarse−grained low−carbon products avoided the damage of gangue to large−scale graphite with high dissociation degree in coarse concentrate, and the carbon grade increased rapidly. Its recleaning concentrate and medium−grained medium−carbon were combined into one product, and fine−grained high−carbon products were regrinding and re−concentration in two stages respectively. The fixed carbon content of both concentrates were greater than 96%. Compared with the conventional process, "five times regrinding and six times flotation" were reduced. The final carbon grade of the concentrate was higher than 95% and the +0.15 mm particle size was about 65% in both processes. The +0.30 mm content in the new process was 3.37% higher.
- crystalline graphite /
- large-flaky graphite protection /
- particle bed breakage /
- grading and classification

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References

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