Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1995-07-17
1997-05-06
Andrews, Melvyn
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
75743, 423139, 423DIG17, C22B 318
Patent
active
056266480
ABSTRACT:
A bioleaching method is provided for recovering nickel from an ore selected from the group consisting nickel-containing lateritic ores and nickel-containing sulfidic ores or concentrates thereof. Where the ore selected is a nickel-containing lateritic ore, at least one micro-organism selective to the leaching of the lateritic ore is provided as an aqueous solution thereof maintained at a pH ranging from about 1 to 3 including a nutrient for the micro-organism. The ore may be in the form of a heap, or a charge in a vat, or as a slurry. Where the ore selected is a nickel-containing sulfidic ore or concentrate thereof, at least one micro-organism comprising a biooxidizing bacterium selective to the leaching of sulfidic ore is added as an aqueous solution to the sulfidic ore or concentrate maintained at a pH of about 1 to 3, including a nutrient for the bacterium. The ore either as a slurry, a heap, or a charge in a vat is bioleached for a time sufficient to effect the dissolution of the nickel in the ore and form a solution thereof and a residue which is separated from the solution. The nickel is then selectively extracted from the solution using an ion exchange resin, and the nickel thereafter extracted from the resin using a mineral acid.
REFERENCES:
patent: 4401629 (1983-08-01), Hancock et al.
patent: 5429659 (1995-07-01), Spencer et al.
patent: 5491078 (1996-02-01), Clark
Duyvesteyn Willem P. C.
Omofoma Matt
Andrews Melvyn
BHP Minerals International Inc.
LandOfFree
Recovery of nickel from bioleach solution does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Recovery of nickel from bioleach solution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recovery of nickel from bioleach solution will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2129239