Influences of Grinding on the Classification and Enrichment of Vanadium in Stone Coal


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Grinding, as an important preparation step for beneficiation is very necessary to study for the finely disseminated extent, vanadium-bearing stone coal with complex chemical composition. In this paper, grinding medium, time, degree and monomer dissociation degree were investigated in detail. The results show that the efficiency of rod milling is better than that of ball milling, especially the proportion of −0.038 mm size fraction obtained by rod milling is 10.89% higher than ball milling. The grinding degree of 8 min rod mill is −74 µm 73.19%, then the proportion of monomer is 70.68%. MLA measurement shows that roscoelite can not be dissociated by fine grinding. Vanadium concentrate with 0.97% of the grade and 89.88% of recovery was obtained by classification and shaking table technology. Tailing rate is 18.82%. The enrichment of vanadium can be realized by reasonable grinding and classification.

Sobre autores

Liuyi Ren

Scool of Resources and Environmental Engineering; University of Queensland

Autor responsável pela correspondência
Email: rly1015@163.com
República Popular da China, Wuhan, 430070; Brisbane, Queensland, 4072

Weineng Zeng

Scool of Resources and Environmental Engineering

Email: rly1015@163.com
República Popular da China, Wuhan, 430070

Xiaojie Rong

Scool of Resources and Environmental Engineering

Email: rly1015@163.com
República Popular da China, Wuhan, 430070

Qi Wang

Scool of Resources and Environmental Engineering

Email: rly1015@163.com
República Popular da China, Wuhan, 430070

Shanglin Zeng

Changsha Research Institute of Mining and Metallurgy

Email: rly1015@163.com
República Popular da China, Hunan, 410012

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