Hydrometallurgical treatment of copper-bearing hematite residue

Details Hydrometallurgical treatment of copper-bearing hematite residue Hydrometallurgical treatment of copper-bearing hematite residue

1981-02-11

1982-07-06

Hearn, Brian E.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

423 36, 423 41, 423146, C25C 112

Patent

active

043381685

ABSTRACT:
A method is provided for recovering copper values from a copper-bearing hematite residue in a single stage. It comprises leaching the residue in an aqueous sulphuric acid solution in the presence of ammonium, sodium or potassium ions, at a temperature between about 80.degree. C. and the boiling point of the solution so that copper values are dissolved while iron is precipitated as jarosite. The method is particularly suitable for the treatment of residues resulting from an oxidizing pressure leach of copper concentrates.

REFERENCES:
patent: 3434947 (1969-03-01), Steintveit
patent: 3493365 (1970-02-01), Pickering et al.
patent: 3793430 (1974-02-01), Weston
patent: 3798304 (1974-03-01), Weston
patent: 3959437 (1976-03-01), Rastas et al.
patent: 3985857 (1976-10-01), Menendez
Treatment of Zinc Leach Plant Residues by the Jarosite Process, G. Steintveit, Advances in Extractive Metallurgy and Refining, edited by M. J. Jones for the Institution of Mining and Metallurgy, London, 1972, pp. 521-528.
Jarosite Process Boosts Zinc Recovery in Electrolytic Plants by J. Wood and C. Haigle, World Mining, Sep. 1972, pp. 34-38.
How Outokumpu Conversion Process Raises Zn Recovery by Huggare, T-L et al, World Mining, Feb. 1974, pp. 36-42.

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