Procedure for the floating obtaining of a concentrate of copper, lead, zinc and silver, from complex piritic minerals. (Machine-translation by Google Translate, not legally binding)

摘要

Procedure for obtaining, by flotation, a concentrate of copper, lead, zinc and silver, from complex pyritic minerals, said concentrate having a content that does not exceed 26%, and which, therefore, is economically treatable via wet for the extraction of the basic metals contained, characterized because it comprises: a) grinding the ore to a size sufficient to allow the elimination of the pyrite released, b) pretreat the flotation pulp by intense oxidation by aeration, c) alkalizing the pulp of flotation, coming from the previous stage, up to a ph comprised between 10 and 11, d) subjecting the product of the previous step to rough flotation, e) alkalizing the roughing residue, up to a ph comprised between 11 and 12, f ) subjecting the product resulting from the previous stage to a flotation stage at which the final residue is obtained, g) classifying the float product in hydrocyclone in the stages of roughing and hurry up h) removing, closed encircuit, the sands from the previous stage. (Machine-translation by Google Translate, not legally binding)