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| Study on the Spheroidization Progress of a Natural Graphite Concentrate |
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Received:January 13, 2022
Revised:January 18, 2022
Accepted:January 20, 2022
Published Online:August 17, 2022
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| DOI： |
| KeyWord:graphite flakes; spheroidization progress; chemical purification; electrochemical performance |
| Author | Institution |
| Wang Bin |
Minerals Exploration and Development Co. Ltd |
| Wang Jionghui |
Minerals Exploration and Development Co. Ltd |
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| Abstract: |
| Natural graphite anode materials is considered to be one of the for lithium-ion batteries due to its low cost, low voltage platform and stable cycle performance. Natural graphite flakes need to be mechanical spheroidized to overcome the its highly anisotropic structure, and then purified, modified by carbon coating before its application as anode materials. In this paper, spherical experimental and chemical purification of a flaky graphite flotation concentrate was conducted, the spheroidization yield and purification efficiency were carefully studied. Spherical graphite product (D50 =16.31μm, tap density of 1.05 g/cm3 ) can be obtained with yield of 40.13%. The spherical graphite product could be chemically purified carbon content of 99.95%, which had reached the level Ⅱ requirement in < GB/T-24533-2019 >. This work provide an important technical reference for the future exploration of the nature graphite resources. |
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