Froth flotation of zinc sulfide

B - Operations – Transporting – 03 – D

Patent

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B03D 1/02 (2006.01) B03D 1/004 (2006.01) C11D 7/30 (2006.01)

Patent

CA 1118917

Abstract of the Disclosure Zinc sulfide is concentrated by a froth flotation pro- cess using a substituted benzotrifluoride compound as depressant for calcium fluoride. The benzotrifluoride compounds are substi- tuted by hydrophilic groups such as hydroxy, carboxylic acid and amino.

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