PRE-TREATMENT FOR CONVENTIONAL CYANIDATION FOR SILVER RECOVERING FROM MANGANESE - ARGENTIFEROUS ORES CONTAINING OCCLUDED SILVER.

摘要

The present invention discloses a treatment for recovering silver from ores containing occluded silver, predominantly pyrolusite, which includes a pre-treatment of the manganese-argentiferous ore with sulfur dioxide produced by roasting elemental sulfur, generating manganese sulphate, and pregnant solution with more than 90% silver recovery.