Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1977-09-08
1978-06-27
Vertiz, O. R.
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
75101BE, 423139, 423149, 423418, 260439R, 260609R, C22B 2304, C01G 5102, C01G 5302, C07C14900
Patent
active
040972720
ABSTRACT:
A novel process for extracting, concentrating, and isolating nickel and cobalt from aqueous solution thereof. A cobalt and/or nickel bearing solution is contacted with an extractant comprising a substantially water immiscible organic solvent containing solubilized mercaptide anion to form water insoluble cobalt and nickel mercaptides in the organic phase. The organic phase is then separated from the raffinate and contacted with an alkaline solution and carbon monoxide to produce nickel and cobalt carbonyl compounds. Typically, the nickel carbonyl produced is gaseous Ni(CO).sub.4 which may be easily isolated by known methods from other components in the off-gas stream. Pure nickel metal is then obtained from the nickel tetracarbonyl by known methods. The cobalt carbonyl compound produced is typically water soluble carbonyl cobaltate ion, Co(CO).sub.4.sup.-, which may be oxidized to form water insoluble cobalt carbonyl compounds. The stripped extractant, the cobalt and nickel-free raffinate, and the carbon monoxide from the decomposition of carbonyl may be recycled.
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Swan, C. et al. "Complexes of Co, Ni, Th, Pd with Some Mercapto Compounds" Chemistry and Industry 8/12/67 pp. 1353, 1364.
Mehrota, R. et al. "Thiol and Thio-B-Diketone Derivatives of Some Elements" Inorganica Chemica Acta, Reviews (1968), pp. 111-121.
Pemsler J. Paul
Rappas Alkis S.
Hearn Brian E.
Kennecott Copper Corporation
Lorusso Anthony M.
Sniado John L.
Vertiz O. R.
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