Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1987-02-13
1989-05-30
Andrews, Melvyn J.
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
75117, 75118R, 75119, 75120, 75121, C22B 300
Patent
active
048347930
ABSTRACT:
An oxidation process for releasing a metal of interest in an ore is described. The process is especially useful for releasing a metal of interest entrapped in a refractory ore. The process comprises reacting the ore with nitric acid until sufficient oxidation has occurred to release the metal of interest so that it may be recovered by conventional techniques. Nitric acid is regenerated in situ by aerating the liquid medium and contacting it with the off gases generated by the oxidation. The process is continuous and the nitric acid is recycled to the reactor preferably after removal of accumulated sulfate.
REFERENCES:
patent: 3966462 (1976-06-01), Posel et al.
patent: 3992270 (1976-11-01), Lemarinel et al.
patent: 4132758 (1979-01-01), Frankiewicz et al.
patent: 4250149 (1981-02-01), Welsh
patent: 4670051 (1987-06-01), Schneider
Fair Kenneth J.
Schneider John C.
Van Weert Gezinus
Andrews Melvyn J.
Hydrochem Developments Ltd.
LandOfFree
Oxidation process for releasing metal values in which nitric aci does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Oxidation process for releasing metal values in which nitric aci, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Oxidation process for releasing metal values in which nitric aci will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2149872