ferric chloride leaching of copper from chalcopyrite

CHALCOPYRITE DISSOLUTION IN CUPRIC CHLORIDE SOLUTIONS Doctoral Thesis Mari Lundström . ... Hydrometallurgical technology offers the possibility of processing lowgrade or small copper ... Chalcopyrite in Cupric Chloride Leaching. Canadian Metallurgical Quarterly 47(2008) 3, pp.

Leaching of chalcopyrite with ferric ion. Part III: Effect of redox potential on the silvercatalyzed process The passivation of chalcopyrite subjected to ferric sulfate leaching .

Results showed that high hydrochloric acid and cupric ion concentration assisted leaching; on the other hand, electrowinning of copper from chalcopyrite ore leaching solution using chloride media is much feasible when acid and cupric ion concentrations are low ( M/l and M/l, respectively).

LEACHING OF CHALCOPYRITE (CuFeS2) WITH SODIUM CHLORIDE SULFURIC ... Ferric sulfate and ferric chloride have been used as oxidants to leach copper chalcopyrite1'8; it has also been found that chalcopyrite can be treated with sulfur chloride (SC12) for copper re

leaching in chloride acid solutions (Yoo et al., 2010). Therefore, redox controlled leaching using chloride acid is an attractive alternative as a high rate chalcopyrite

Other leaching systems that have been studied over the years for the extraction of copper from chalcopyrite on laboratory or pilot scale include systems employing concentrated solutions of ferric chloride or ammoniacal ammonium as lixiviants.

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In the presented work, possibilities of intensification of copper leaching from chalcopyrite CuFeS2 induced by mechanical activation was studied. In this article, the influence of mechanical activation time on copper leaching efficiency is compared.

in orse´ D 2004 Published by Elsevier In highly concentrated chloride solutions, copper readily forms cuprous complexes such as [CuCl2], solutions in chalcopyrite.

A process for extracting copper from a coppercontaining concentrate by comminuting the concentrate in the presence of a liquid dispersing agent which inhibits agglomeration and forms a pulp, and leaching the pulp in the presence of a silver catalyst. Chalcopyrite () is the most common ...

mixture with ferric chloride solutions, elemental sulphur was formed inthesurface layers. Phases ... pentlandite inacidic ferric sulphate solutions. This was followed by a conventional kinetic investigation of ... variety of copper sulphides under conditions similar to those used in the present experiments. For covellite (CuS), these ...

Effect of ferric concentration Most of the leaching solutions used in this work were 3 M in sodium chloride and so the metals in Fig. 5 shows the effect of ferric concentration on solution should be complexed with chloride ions. copper dissolution and the dependence of the rate on Ferric iron, for instance, is distributed between five this ...

trates has focused on leaching; recovery of copper from solutions is common. The leaching of chalcopyrite can be performed in sulfuric and chloride me dia (5–11).

Understanding the dissolution of copper from chalcopyrite is important as chalcopyrite is the most abundant copper mineral in the earth's crust. The main method for extraction of copper from chalcopyrite is by flotation concentration before being smelted and electrorefined. However, this process is not suitable for the treatment of the vast reserves of low grade chalcopyrite ores, where ...

Copper is recovered from chalcopyrite by means of a pollutionfree hydrometallurgical process which entails leaching and converting the chalcopyrite with copper sulfate in order to produce an insoluble copper sulfide, a soluble iron sulfate and sulfuric acid.

leaching copper iron form electrolyte. leaching copper iron form electrolyte. ... Get Quotations · Economic evaluation of a process for ferric chloride leaching of chalcopyrite . Ferric Nitrate is also called Iron nitrate. . Electrolyte solution conductivity demonstrator / Chemistry / Laboratory. Chat Online.

Of the numerous chloride routes, ferric chloride (FeCl3) leaching of chalcopyrite ..... which stimulate the search for new environmental friendly solutions such as... More details » Get Price LEACHING OF SOME NIGERIAN MINERALS University of Ilorin