Conference Proceedings
Critical Minerals Conference Proceeding 2025
Conference Proceedings
Critical Minerals Conference Proceeding 2025
Lessons learned from graphite projects with beneficiation and purification
The typical graphite found in nature has a low value however its value can be greatly enhanced if suitable as anodes in lithium-ion batteries. This paper has studied the methods of producing marketable graphite from a number of graphite ores. Graphite is a versatile material with diverse applications, including pencils, lubricants, batteries, and industrial processes. Its unique properties, like high thermal and electrical conductivity, make it suitable for various uses, from nuclear reactors to electrical motors. It is found in metamorphic rocks as disseminated crystal flakes, in veins and fractures. QEMSCaN is not applicable for graphite making liberation analysis difficult. Graphite is soft and can slime so grinding is often done in rod mills. It is naturally floatable requiring kerosene as a collector and sometimes sodium silicate as a dispersant. achieving a high rougher recovery and thereafter uses multiple stages of regrinding and cleaning to achieve a typical 95 per cent total fixed carbon in concentrate (FC). Purification is required to achieve 99 per cent FC and can be difficult to achieve. Graphite spheroidisation is then required to make the graphite suitable as anode material for lithium batteries. a number of graphite projects are discussed and differences in mineralogy and difficulties in achieving a product that meets market specification.
Contributor(s):
D Connelly
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- Published: 2025
- Pages: 2
- PDF Size: 0.088 Mb.
- Unique ID: P-04687-H9R2S7