Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1983-07-22
1985-09-17
Doll, John
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
75108, 75115, 75119, 423140, 423141, 423146, 423150, C01G 5300, C01G 5500, C22B 300
Patent
active
045418683
ABSTRACT:
According to the present invention, improved dissolution of nickel and cobalt and thus improved recovery of those desired metal values is achieved by modifying the ore recovery processes wherein sulfuric acid leaching at elevated temperatures is used to dissolve the nickel and cobalt. In particular, according to the present invention, processes are provided wherein the sulfuric acid and ore are contacted at substantially ambient temperature prior to subsequent heating to attain the elevated temperatures of the sulfuric acid leach. Practice of the present invention has been found to result in improved metal value recovery.
REFERENCES:
patent: 2842427 (1958-07-01), Reynaud et al.
patent: 2872306 (1959-02-01), Morrow
patent: 2971836 (1961-02-01), Hall
patent: 3082080 (1963-03-01), Simons
patent: 3093559 (1963-06-01), White
patent: 3293027 (1966-12-01), Mackiw et al.
patent: 3333924 (1967-08-01), Hazen et al.
patent: 3365341 (1968-01-01), Fitzhugh, Jr. et al.
patent: 3466144 (1969-09-01), Kay
patent: 3473920 (1969-10-01), Fitzhugh, Jr. et al.
patent: 3720749 (1973-03-01), Taylor et al.
patent: 3737307 (1973-06-01), Fitzhugh, Jr. et al.
patent: 3761566 (1970-09-01), Michal
patent: 3773891 (1973-11-01), O'Neill
patent: 3793432 (1974-02-01), Weston
patent: 3804613 (1974-04-01), Zundel et al.
patent: 3809549 (1974-05-01), Opratko
patent: 3991159 (1976-11-01), Queneau et al.
patent: 4012484 (1977-03-01), Lussiez
patent: 4044096 (1977-08-01), Queneau et al.
patent: 4065542 (1977-12-01), Subramanian et al.
patent: 4097575 (1978-06-01), Chou et al.
patent: 4098870 (1978-07-01), Fekete et al.
patent: 4195065 (1980-03-01), Duyvesteyn
patent: 4410498 (1983-10-01), Hatch et al.
Boldt, Jr., Joseph R., The Winning of Nickel, Longmans Canada Limited, 1967, pp. 439-440.
"Freeport Nickel's Moa Bay Puts Cuba Among Ranking Ni-Producing Nations", Engineering and Mining Journal, vol. 160, No. 12, Dec. 1959, pp. 84-92.
Hoe Dennis L.
Litz John E.
Lowenhaupt E. Harris
California Nickel Corporation
Doll John
Stoll Robert L.
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