Process for defluorinating an acid sulphate solution

Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group iib metal

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210710, 210724, 210737, 210915, 423301, 423465, C01G 906

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045670277

ABSTRACT:
A process for defluorinating a solution of a sulphate of Zn, Ni, Cd, Mn and/or Mg, in which Al.sup.3+ and PO.sub.4.sup.3- ions are added to the solution, 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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