Purification of wet process phosphoric acid as a...

Details Purification of wet process phosphoric acid as a... Purification of wet process phosphoric acid as a...

C - Chemistry, Metallurgy

22

B

53/211, 23/72

C22B 3/00 (2006.01) C01B 25/235 (2006.01) C22B 60/02 (2006.01)

Patent

CA 1139954

346255 ABSTRACT OF THE DISCLOSURE A metal containing acidic solution, also con- taining humic acid impurities and contaminants, is puri- fied by contacting the acidic solution with a scrubbing agent consisting essentially of a metal extractant and from about 50 vol.% to about 90 vol.% of a hydrocarbon, where the scrubbing agent interacts with impurities and contaminants in the acidic solution to form a sludge phase which is removed and a purified acid phase which can be fed into a metal recovery process.

346225

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