Method for recovering metals from solutions

Details Method for recovering metals from solutions Method for recovering metals from solutions

1994-02-07

1995-12-05

McCarthy, Neil

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210724, 210912, 75726, C02F 162

Patent

active

054726182

ABSTRACT:
A method for recovering metals from solutions is described. A particular embodiment of the method concerns recovering copper metal. The method comprises first treating a solution containing copper ions with a sufficient amount of an inorganic acid to obtain a solution pH of from about 1.5 to less than about 2.5. A reducing metal, such as iron, is then added to the solution to precipitate metal ions, such as copper ions, as metals. The reducing metal has a mesh size preferably smaller than about 350, and even more preferably at least as small as about 400 mesh. The metal precipitate is recovered from solution.

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