Procedure to recover lead, silver, copper and bismuto from a mine that contains them. (Machine-translation by Google Translate, not legally binding)

摘要

Process for recovering lead, silver, copper and bismuth from a ore containing them, which comprises the steps of: (1) to toast a minced ore, in the presence of an effective amount of sodium chloride, in a two-stage roasting operation , without volatilization, the first stage being carried out under neutral atmosphere, to separate a substantial part of any sulfur originally present in the ore, the second stage being carried out under an oxidizing atmosphere, to convert the content of metals to a brine-soluble form; (2) separating the metal content from the ore, by leaching the roasted ore into an acidified brine solution; and (3) recovering the metal content of the brine solution, by an electrodeposition technique, under conditions whereby metals are deposited on the cathode in the form of a dense adherent sponge. (Machine-translation by Google Translate, not legally binding)