Beneficiation of kish graphite

Details Beneficiation of kish graphite Beneficiation of kish graphite

1995-11-08

1997-09-30

Bos, Steven

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

264140, C01B 3104

Patent

active

056723270

ABSTRACT:
A method and apparatus system are disclosed for the beneficiation of kish to produce coarse high purity graphite wherein a concentrate containing at least about 90% carbon is formed, treated with a dilute acid solution, and the pulp then subjected to an adjuvant-assisted attrition to form a novel synthetic flake graphite of 99+ wt. % carbon with at least 70% of the mass retained on +100 mesh, and an overall recovery of graphitic carbon from the feed of greater than 85% by weight.

REFERENCES:
patent: 3932596 (1976-01-01), Rohatgi
Ema et al, "New Recovery Process of Kish Carbon" Proc. Sixth Int. Iron and Steel Congress, Nagoya, Japan 1990 (no month).
Kowa Seiko Co., Ltd. et al "High Purity Kish Graphite", New Materials Development in Japan, 1985, pp. 73-74 (no date).
Wakamatsu et al, "Flotation of Graphite", Minerals Engineering, vol. 4, Nos. 7-11, 1991, pp. 975-982 (no month).
"Graphite-From-Kish Process" Bureau of Mines Preliminary Report No. 415, Jan. 1993.
Landreth et al "The Bench Scale Testing of a Process to Recover Synthetic Flake Graphite and Iron Oxide from Kish", Jun. 13-18, 1993.

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