Process of extracting anions with quaternary amines

Details Process of extracting anions with quaternary amines Process of extracting anions with quaternary amines

B - Operations, Transporting

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402/2, 53/233

B01J 41/04 (2006.01) C02F 1/26 (2006.01) C22B 3/26 (2006.01) C22B 3/28 (2006.01) C22B 3/42 (2006.01)

Patent

CA 2023025

An improved extraction system employing a quaternary amine to extract anions from an aqueous solution, particularly precious metals such as gold or silver from an aqueous alkaline solution. The improvement comprises the use of a weak organic acid (a compound providing an acidic proton) along with the quaternary amine. The improvement is useful in both liquid-liquid and liquid-solid extraction systems.

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