Nitric acid process for ferric sulfate production

Details Nitric acid process for ferric sulfate production Nitric acid process for ferric sulfate production

1996-02-22

1997-04-29

Straub, Gary P.

Chemistry of inorganic compounds

Sulfur or compound thereof

Oxygen containing

423146, 4231501, 4231503, C01G 4900, C01G 4914

Patent

active

056246501

ABSTRACT:
Ferric sulfate is produced by treating ferric ammonium sulfate, ammonium jarosite or a similar iron complex with nitric acid. The ferric ammonium sulfate or ammonium jarosite can be formed by treating a sulfuric acid leaching solution, e.g., a solution used to leach zinc or copper ore concentrate, with a solution of ammonium nitrate. Thereafter, upon addition of dilute nitric acid at a temperature of about 60.degree. C., ferric sulfate forms and is recovered.

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Kershaw, M.G. et al., "The Jarosite Process-Phase Equilibria," LEAD-ZINC-TIN '80, Proceedings of a World Symposium on Metallurgy and Environment Control sponsored by the TMS-AIME Lead, Zinc, and Tin Committee at the 109th AIME Annual Meeting, Feb. 24-28, 1980, in Las Vegas, pp. 565-580.
Haigh, C.J., "The Hydrolysis of Iron in Acid Solutions," Proc. Aust. Inst. Min. Met., Sep. 1967, pp. 49-56.

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