Author: Devi N. Madhuchhanda M. Rath P. Rao K. Paramguru R.
Publisher: Springer Publishing Company
ISSN: 1543-1916
Source: Metallurgical and Materials Transactions B, Vol.32, Iss.5, 2001-10, pp. : 777-784
Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.
Abstract
Hydrochloric acid leaching of chalcopyrite and a manganese nodule, in combination, was studied using powder samples. Chalcopyrite, which does not dissolve well in HCl, was effectively leached in the presence of a manganese nodule at 3 to 4 M HCl. The rates of dissolution of metal values from the nodule were also enhanced in the presence of chalcopyrite. Dissolution was found to occur through three routes: (1) the galvanic interaction between CuFeS2 and MnO2, (2) the action of the Fe3+/Fe2+ redox couple, and (3) the action of Cl2 gas generated from the MnO2-HCl reaction on CuFeS2. The last route appeared to make the major contribution to the dissolution. The combined leaching of a nodule and chalcopyrite appears to be promising from both technical and economic points of view.
Related content
Leaching of pyrrhotite with hydrochloric acid
By Ingraham T.R. Parsons H.W. Cabri L.J.
Canadian Metallurgical Quarterly, Vol. 11, Iss. 2, 1972-04 ,pp. :
Acid Leaching of Chalcopyrite in the Presence of Ozone
By Havlik Tomas Skrobian Milan
Canadian Metallurgical Quarterly, Vol. 29, Iss. 2, 1990-04 ,pp. :
The leaching of lateritic nickel ores in hydrochloric acid
Canadian Metallurgical Quarterly, Vol. 13, Iss. 3, 1974-07 ,pp. :