C - Chemistry – Metallurgy – 09 – C
Patent
C - Chemistry, Metallurgy
09
C
23/313
C09C 1/44 (2006.01) C01B 31/04 (2006.01) C10L 9/02 (2006.01)
Patent
CA 1308232
ABSTRACT A process for treating carbon to reduce the ash content therein is disclosed. The process involves treating the carbon with a fluorine acid solution which consists of an aqueous solution of hydrofluorosilicic acid and hydrogen fluoride, such that the available metal oxides are converted to metal fluorides and/or metal fluorosilicates and separating the treated carbon from the metal fluorides and/or metal fluorosilicates produced by the treatment.
502173
Lloyd Robert
Turner Maxwell James
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Waymate Limited
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