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Abstract

This report provides a survey of published processes suitable for the treatment of complex ores; the list distinguishes two groups of processes: "sulfate" and "chloride" routes. Then a "Lurgi Proposal" for the treatment of complex ores is presented, (with a flow sheet attached which is flexible enough to permit examination of its economics): Selective separation of concentrates, eventually production of a combined "bulk sample". After dead and/or sulphation roasting the calcine of the "bulk" is leached with spent electrolyte from zinc electrolysis. The copper in the aqueous solution obtained is removed by precipitation as copper sulfide (zinc concentrate as precipitation chemical). Experiments were carried out using samples from Canada, Rumania, and Portugal; it was found that besides varying amounts of lead, the zinc content was usually higher than the copper content. The composition of the solution used for the precipitation of copper is given, and lastly a rough economical assessment of bulk processing attempted.

Additional information

Authors: PIETSCH H B LURGI CHEMIE UND HUETTENTECHNIK, FRANKFURT AM MAIN (GERMANY), LURGI CHEMIE UND HUETTENTECHNIK, FRANKFURT AM MAIN (GERMANY)
Bibliographic Reference: WORKSHOP ON MINERALS LEACHING, BRUXELLES (BELGIUM), NOV. 17, 1983 PP. 107-115 EUR 9606 EN-FR (1984) FS, 141 ? P., BFR 450, EUROFFICE, LUXEMBOURG, POB 1003
Record Number: 1989123099700 / Last updated on: 1987-01-01
Category: PUBLICATION
Available languages: en