TOMASZ CHMIELEWSKI, WITOLD A. CHAREWICZ
An experimental study is presented of leaching of a sulphide copper concentrate with aqueous ferric sulphate under oxygen pressure. The effects of oxygen pressure, sulphuric acid concentration and ferrous iron additions on the copper leaching rate have been determined. Partial pressure of oxygen has been found to govern the rate of copper leaching while the concentration of sulphuric acid only slightly influences this rate. Oxygen enhances the leaching rate mainly by oxidizing ferrous iron to ferric iron -- the major leaching agent -- and not by direct action on the minerals. Leaching of a sulphide copper concentrate under oxygen pressure with aqueous ferric sulphate leads to a three-fold reduction of both the necessary leaching time and ferric sulphate concentration in the leaching solution over those for conventional leaching with concentrated aqueous ferric sulphate.
@article{91578589-b3c0-45ac-b319-c005b5763bc9,
title={Pressure leaching of a sulphide copper concentrate with simultaneous regeneration of the leaching agent},
author={TOMASZ CHMIELEWSKI and WITOLD A. CHAREWICZ},
year={1984},
language={en}
}TY - JOUR TI - Pressure leaching of a sulphide copper concentrate with simultaneous regeneration of the leaching agent AU - TOMASZ CHMIELEWSKI AU - WITOLD A. CHAREWICZ PY - 1984 LA - en ER -
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