Method for reducing kc1 tailings loss from evaporators

Details Method for reducing kc1 tailings loss from evaporators Method for reducing kc1 tailings loss from evaporators

C - Chemistry, Metallurgy

01

D

23/170, 161/31

C01D 3/04 (2006.01) B01D 1/26 (2006.01) C01D 3/06 (2006.01)

Patent

CA 1135617

Abstract of the Disclosure Disclosed is an improved method of concentrating with respect to a first salt an aqueous solution containing the first salt and a second salt, the solubility of the first salt increasing more with increasing temperatures than the solubility of the second salt by multiple stage evaporation at progressively higher temperatures and backward fed, wherein second salt is precipitated in each evaporator stage which communicates with an elutriation leg, wherein an aqueous slurry containing second salt is withdrawn from the elutriation leg and wherein the concentrated solution is forwarded to a step where the first salt is recovered. In the improved method slurry withdrawn from the evaporator stages is leached with raw feed and/or mother liquor from the step in which the first salt is recovered.

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