C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 34/12 (2006.01) C22B 3/44 (2006.01) C22B 5/00 (2006.01) C22B 5/08 (2006.01)
Patent
CA 2406328
A process, in which precious metals, particularly the Platinum Group Elements, by a sequence of chronologically executed chemical and electrochemical procedures, are chemically separated and removed from an ionic complex acidic solution of precious and base transition metals as insoluble Black or simple sulfides of the Platinum Group Elements, that may be purified in acids, changed to oxides by roasting, and reduced to metals. The process is made possible by deviating from the traditional understanding of complex anions, and by regarding the ionic complexes as double salts, that can be isolated into their individual components, when removed from the solution of the primary acid.
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