Method of recycling nickel and cobalt alloy scrap metal contamin

Details Method of recycling nickel and cobalt alloy scrap metal contamin Method of recycling nickel and cobalt alloy scrap metal contamin

1996-11-14

1998-10-27

Andrews, Melvyn

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

134 3, C22B 306

Patent

active

058273492

ABSTRACT:
The process for removing titanium metal and alloys from nickel metal, nickel metal alloys, cobalt metal and cobalt metal alloys by leaching out the titanium metal and/or alloys with a hydrofluoric acid solution, oxidizing Ti.sup.+3 to Ti.sup.+4 salts in the leached metals or alloys with an aqueous oxidant, and rinsing the leached metal with water to yield nickel metal, nickel metal alloys, cobalt metal, and/or cobalt metal alloys substantially free of titanium and tin.

REFERENCES:
patent: 5354623 (1994-10-01), Hall

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