Process for recovery of Gold and Silver from complex ores and concentrates of pyrite and arsenopyrite

摘要

CHARACTERIZED BECAUSE IT CONSISTS OF FOUNDING A LOAD OF PIRITS AND / OR ARSENOPIRITES, WITH GOLD AND SILVER CONTENT, UNDER REDUCING CONDITIONS (0.5% OF OXYGEN FREE) FORMING ASY PIRROTITA, THAT IS CONTACTED WITH METALLIC COVERED LEAD OF ONE TEMPERATURE OF ONE TEMPERATURE 11 CA 1200 ° C, WHERE BOTH PHASES EXIST IN A LIQUID STATE, AND ALLOWS GOLD AND SILVER TO BE TRANSLATED FROM THE PIRROTIST TO THE LEAD PHASE FOR A POSITIONING GRANULATION AND STORAGE OF THE PIRROTITA; THEN THE ENRICHED LEAD PHASE IS SUBJECTED TO A PROCESS THAT ELIMINATES PRECIOUS METALS, SUCH AS DISPLATED WITH ZINC,The lead phase was reused and the precious metal was obtained. The advantage of this process is that it does not form oxidation gas as a by-product because it operates in oxygen free conditions.