Low temperature caustic sulfide wet oxidation process

Details Low temperature caustic sulfide wet oxidation process Low temperature caustic sulfide wet oxidation process

C - Chemistry, Metallurgy

02

F

C02F 11/08 (2006.01)

Patent

CA 2119202

A process for treatment of caustic sulfide liquor by wet oxidation in a ferrous-based alloy system at temperatures less than about 175°C is described. The liquor is first analyzed for alkalinity consuming species and for nonsulfidic alkalinity. If excess alkalinity consuming species is present compared to nonsulfidic alkalinity, then additional nonsulfidic alkalinity is added to the raw liquor such that excess alkalinity is present during wet oxidation treatment, thus preventing excessive corrosion to the ferrous-base alloy system.

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