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Nickel Recovery from Western Sources. Task I - Report - Technical and Economic Evaluation.

PB256574

Publication Date	1975
Page Count	123
Abstract	The Albany Metallurgical Research Center of the U.S. Bureau of Mines has developed a conceptual process for the extraction and recovery of nickel and cobalt from Western laterites. The process steps, in sequence, include drying, calcination and controlled reduction of the ore, selective oxidation and leaching of the reduced ore in ammoniacal ammonium sulfate solutions, separation of leach residues from pregnant liquor, selective solvent extraction of metals from leach solutions onto organic solvents and selective stripping of metals from the solvents into recycled electrolytes, and electrowinning the metal products from the stripping solution. The process steps have been demonstrated on a semicontinuous bench scale in the laboratory, and guide lines are provided for selection of criteria on which the design of a commercial size plant can be based and plant costs estimated.
Keywords	Nickel ores Extractive metallurgy Laterites Cobalt Drying Roasting Reduction(Chemistry) Leaching Separation Ammonium sulfate Solvent extraction Electrowinning Design Pilot plants Operating costs Capitalized costs
Source Agency	Bureau of Mines
NTIS Subject Category	71N - Nonferrous Metals & Alloys
Corporate Authors	Singmaster and Breyer, New York.; BUREAU OF Mines, Washington, D.C.
Document Type	Technical Report
NTIS Issue Number	197623
Contract Number	DI-J0255007

Nickel Recovery from Western Sources. Task I - Report - Technical and Economic Evaluation.

Nickel Recovery from Western Sources. Task I - Report - Technical and Economic Evaluation.
PB256574

Publication Date	1975
Page Count	123
Abstract	The Albany Metallurgical Research Center of the U.S. Bureau of Mines has developed a conceptual process for the extraction and recovery of nickel and cobalt from Western laterites. The process steps, in sequence, include drying, calcination and controlled reduction of the ore, selective oxidation and leaching of the reduced ore in ammoniacal ammonium sulfate solutions, separation of leach residues from pregnant liquor, selective solvent extraction of metals from leach solutions onto organic solvents and selective stripping of metals from the solvents into recycled electrolytes, and electrowinning the metal products from the stripping solution. The process steps have been demonstrated on a semicontinuous bench scale in the laboratory, and guide lines are provided for selection of criteria on which the design of a commercial size plant can be based and plant costs estimated.
Keywords	Nickel ores Extractive metallurgy Laterites Cobalt Drying Roasting Reduction(Chemistry) Leaching Separation Ammonium sulfate Solvent extraction Electrowinning Design Pilot plants Operating costs Capitalized costs
Source Agency	Bureau of Mines
NTIS Subject Category	71N - Nonferrous Metals & Alloys
Corporate Authors	Singmaster and Breyer, New York.; BUREAU OF Mines, Washington, D.C.
Document Type	Technical Report
NTIS Issue Number	197623
Contract Number	DI-J0255007