Reduction and oxidation of transition metals, including...

Details Reduction and oxidation of transition metals, including... Reduction and oxidation of transition metals, including...

C - Chemistry, Metallurgy

25

C

C25C 7/00 (2006.01) C22B 3/02 (2006.01) C22B 3/04 (2006.01)

Patent

CA 2313144

This invention has applications in the manufacturing of salts, analysis, mining, extraction and refining of transition metals, particularly Platinum Group Metals. A physical and electrochemical process in a compartmentalized electrolytic cell changes refractory transition metal compounds to readily soluble salts. The electrolytic cell has three compartments, a mixing chamber, a reduction chamber and an oxidation chamber. The mixing chamber contains the electrolyte, the substance processed, the reduction chamber and the oxidation chamber. In the reduction chamber, the negative electrode and the electrolyte produce a concentration of nascent hydrogen, which reduces the metals. In the oxidation chamber, the positive electrode and the electrolyte produce a concentration of nascent chlorine and oxidizing agents, which oxidize metals as soluble salts, or soluble complex ionic compounds. Convection currents or pumps circulate the substance processed through the various chambers.

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