Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1989-10-11
1991-02-12
Rosenberg, Peter D.
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
75736, C22B 300
Patent
active
049920979
ABSTRACT:
The invention relates to a process for the recovery of a valuable metal(s) from its ore(s), that includes a method for removal of environmentally hazardous, volatile material prior to the removal of the metal(s) from its ore pulp or liquor carrier.
The process comprises forming a pulp of particles of the ore(s) and leaching from that pulp the valuable metal component via the formation of soluble metal complexes.
As elements of the leaching chemicals used are often volatile at least the liquor component of the metal containing pulp is contacted by flow of gas to remove any volatile content. In the case of the leaching chemicals volatile elements the recycling of the volatile element to reform the original leaching chemical is a substantial advantage.
The metal is removed from the pulp, or its liquor component, by methods known in the art such as adsorption onto carbon or resin, electrowinning, zinc cementation, precipitation solvent extraction or the like.
The metal is then recovered in its solid form.
REFERENCES:
patent: 4632701 (1986-12-01), Berezowsky
patent: 4731114 (1988-03-01), Ramadorai
patent: 4872909 (1989-10-01), Allen
Her Majesty the Queen in right of New Zealand (Department of Sci
Rosenberg Peter D.
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