Method for separation of metals from waste stream

Details Method for separation of metals from waste stream Method for separation of metals from waste stream

1994-09-08

1995-09-26

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75724, 423622, 423623, C22B 1924

Patent

active

054531110

ABSTRACT:
A method for the recovery of metals including zinc, zinc oxide, iron-carbon feedstocks, lead and cadmium from industrial waste streams which entails treating the waste streams with carbon and an ammonium chloride solution, separating any undissolved components from the solution, displacing metal ions including lead and cadmium from the solution using zinc metal, further treating the solution to remove zinc compounds therefrom, further treating the zinc compounds and the undissolved components with a dissolving solution, and further treating the displaced metal ions to recover lead, cadmium and zinc therein using various methods including electrolysis.

REFERENCES:
patent: 2503479 (1950-04-01), Griffith
patent: 4071357 (1978-01-01), Peters

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