Method for recovering and separating metals from waste streams

Details Method for recovering and separating metals from waste streams Method for recovering and separating metals from waste streams

1996-08-13

1998-05-19

McCarthy, Neil

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210719, 210721, 210725, 210727, 210912, 75416, C02F 162, C02F 164

Patent

active

057531250

ABSTRACT:
A method for recovering and separating precious and non-precious metals from waste streams, which removes, separates, and recovers such metals in a cost effective manner with more than 95% removal from waste streams and with minimal amounts of umprocessed solids and sludge remaining in the enviroment. Metals such as chromium, manganese, cobalt, nickel, copper, zinc, silver, gold, platinum, vanadium, sodium, potassium, beryllium, magnesium, calcium, barium, lead, aluminum, tin; and the like are removed and recovered from the waste streams with at least 95% removal and other metals and compounds, such as antimony, sulfur, and selenium are removed and recovered from waste streams with at least 50% removal. The method employs a unique complexing agent comprising a carbamate compound and an alkali metal hydroxide which facilitates the formation of the metals into ionic metal particles enabling them to be readily separated, removed and recovered.

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