Recovering iron, nickel, or cobalt from sulfate solution

Details Recovering iron, nickel, or cobalt from sulfate solution Recovering iron, nickel, or cobalt from sulfate solution

1975-09-26

1977-02-01

Vertiz, Oscar R.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Iron group metal

423150, 423160, 423161, 423164, 423166, C01G 4902, C01G 5104, C01G 5304, C01F 1100

Patent

active

040062155

ABSTRACT:
Sulfate solutions containing at least one valuable metal from the group: Fe, Ni and Co, particularly solutions resulting from the leaching of lateritic ores or concentrates, are treated to recover the valuable metal. The latter is precipitated by treating the solution 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).

REFERENCES:
patent: 1112770 (1914-10-01), Clarke
patent: 2433458 (1947-12-01), Kahn et al.
patent: 3044868 (1962-07-01), Francis
patent: 3375066 (1968-03-01), Murakami et al.
patent: 3720749 (1973-03-01), Taylor et al.

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