Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1977-03-07
1978-06-13
Hearn, Brian
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
423 34, 423 41, 423150, C25C 112
Patent
active
040947548
ABSTRACT:
Nickel is selectively leached efficiently and rapidly from Ni-Cu-Fe-S matte under oxidizing conditions at ordinary pressure by controlling in combination the following variables: (1) the acid-to-copper mole ratio in the leaching solution, (2) the temperature, and (3) the sulfur content of the matte, whereby an enriched nickel solution is obtained low in copper and iron.
REFERENCES:
patent: 3293027 (1966-12-01), Mackiw et al.
patent: 3741752 (1973-06-01), Evans et al.
patent: 3914374 (1975-10-01), Koehler et al.
patent: 3962051 (1976-06-01), Symens et al.
Llanos et al. "Atmospheric Leaching of Matte at the Port Nickel Refinery" C.I.M. Bulletin, Feb., 1974, pp. 74-81.
Chou Eddie C. J.
Clark Franklin F.
Queneau Paul B.
Symens Raymond D.
Amax Inc.
Ciomek Michael A.
Hearn Brian
Kalil Eugene J.
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