Methods and compositions for reducing precipitation from...

E - Fixed Constructions – 21 – B

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E21B 43/27 (2006.01) C09K 8/528 (2006.01)

Patent

CA 2108702

Methods and compositions for reducing the precipitation of metal sulfides from acid solutions are provided. The methods basically comprise reducing the precipitation of metal sulfide compounds from an aqueous acid solution when the solution dissolves sulfide and metal ions by combining at least one oxime with the acid solution in an amount whereby the oxime preferentially reacts with sulfide ions in the solution and thereby prevents the sulfide ions from reacting with metal ions therein.

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