Study on washability of microcrystal graphite using float-sink tests

This article presented an experimental research on washability of microcrystal graphite using float-sink tests. Chemical and X-ray analyses showed that graphite, semi-graphite, meta-anthracite, and anthracite existed together in this microcrystal graphite sample;and the intergrowth relationship betw...

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Bibliographic Details
Published in:矿业科学技术学报（英文版） 2013 (6), p.849-855
Main Authors: Li Hongqiang, Feng Qiming, Ou Leming, Long Sisi, Cui Mengmeng, Weng Xiaoqing
Format: Article
Language:English
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Summary:This article presented an experimental research on washability of microcrystal graphite using float-sink tests. Chemical and X-ray analyses showed that graphite, semi-graphite, meta-anthracite, and anthracite existed together in this microcrystal graphite sample;and the intergrowth relationship between micro-crystal graphite and gangues was very complicated based on optical mineralogy research. The results of float-sink tests revealed that:for the -25+0.5 mm size fraction, about 68%(by weight) of microcrystal graphite was obtained at the density of 2.0 g/cm3, and the float product met the standard of commercial grade W65; for the -0.5 mm size fraction, 58% (by weight) of microcrystal graphite was floated at the density of 2.0 g/cm3, which met the standard of commercial grade W70. It can be concluded that micro-crystal graphite may be upgraded by dense media separation (DMS) providing a float product using as the raw materials of casting or refractories.
ISSN:2095-2686