Extraction process for removing and recovering metals from...

Details Extraction process for removing and recovering metals from... Extraction process for removing and recovering metals from...

C - Chemistry, Metallurgy

22

B

53/375

C22B 3/00 (2006.01) C01F 5/00 (2006.01) C01F 11/00 (2006.01) C01G 9/00 (2006.01) C01G 39/00 (2006.01) C01G 45/00 (2006.01) C02F 1/26 (2006.01) C22B 3/38 (2006.01) C22B 60/02 (2006.01)

Patent

CA 1244246

(54) ABSTRACT The purpose of the process is to remove and to recover metals from their aqueous solution by the extraction process. As extractant is used monoesters of phosponic acid wherein the alkyl group is a phenyl-vinyl group or straight-chained and the ester group is straight-chained. The particular advantage of the process is that the metals can be removed from aqueous solutions to be treated without neutralization of the acid quantity produced during extraction, and this acid solution produced can be circulated e.g. to the stage before the extraction. The process can be used to the removing of metals from the industrial waste waters.

484515

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