Process for defluorinating an acid sulphate solution

Details Process for defluorinating an acid sulphate solution Process for defluorinating an acid sulphate solution

C - Chemistry, Metallurgy

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C01B 17/96 (2006.01) C01G 9/06 (2006.01) C01G 11/00 (2006.01) C22B 3/44 (2006.01)

Patent

CA 1210564

Process for defluorinating an acid sulphate solution Abstract A process for defluorinating a solution of a sulphate of Zn, Ni, Cd, Mn and/or Mg, in which Al3+ and PO43- ions are added to the so- lution, then the solution is neutralized up to a pH higher than 4 and lower than that one that causes a substantial precipitation of Zn, Ni, Cd, Mn and/or Mg, thereby producing a fluorinated precipitate, and the precipitate is separated from the solution.

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