Process for recovering valuable metals from sulfate solutions

Details Process for recovering valuable metals from sulfate solutions Process for recovering valuable metals from sulfate solutions

C - Chemistry, Metallurgy

22

B

53/117, 53/304,

C22B 3/00 (2006.01) C22B 3/44 (2006.01) C22B 15/00 (2006.01) C22B 19/20 (2006.01) C22B 21/00 (2006.01) C22B 26/20 (2006.01) C22B 26/22 (2006.01) C22B 34/12 (2006.01) C22B 34/32 (2006.01) C22B 47/00 (2006.01) C22B 58/00 (2006.01)

Patent

CA 1041304

Abstract of the Disclosure Sulfate solutions containing at least one valuable metal from the group: Fe, Ni and Co, particu- larly solutions resulting from the leaching of lateritic ores or concentrates, are treated to recover the valuable metal. The latter is precipitated by treating the solu- tion with magnesium hydroxide. The resulting magnesium- containing solution is treated with lime under controlled conditions to precipitate relatively fine particles of magnesium hydroxide and relatively coarse particles of gypsum. The difference in particle size is relied on to separate the magnesium hydroxide (for recycling) from the gypsum (which is calcined to regenerate lime).

223652

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