Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1994-07-19
1995-07-11
Rosenberg, Peter D.
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
75724, 75725, 75739, 75740, C22B 1500
Patent
active
054317134
ABSTRACT:
A method for the reclamation of zinc, lead, tin, cadmium and copper from dust containing such elements or compounds which involves leaching the dust with sulfuric acid or ammonium bisulfate, neutralization the leachate with zinc oxide or zinc hydroxide, and cementing and/or roasting various intermediate and final products for the reclamation of the above metals. The method is especially designed for reclaiming the above metals from waste streams from production processes for electrical conductors. The method is a continuous process with the recirculation of various solutions remaining after the completion of each step.
REFERENCES:
patent: 3464814 (1969-09-01), Jackson
patent: 4309215 (1982-01-01), Nissen
patent: 4482377 (1984-11-01), Heins
patent: 5208004 (1993-05-01), Myerson
patent: 5228903 (1993-07-01), O'Keefe
Zinc And Its Alloys And Compounds, by S. W. K. Morgan, at 103 et seq. (Ellis Horwood Ltd., 1985).
Zinc The Science And Technology Of The Metal, Its Alloys And Compounds, at 183 et seq. (Reinhold Pub. Corp., 1959).
Industrial Electrochemistry, by C. L. Martell, at 321-7 (McGraw-Hill Book Co., 1940).
Cudahy Michael W.
Myerson Allan S.
Metals Recycling Technologies Crop.
Rosenberg Peter D.
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