METHOD FOR PROCESSING GOLD-ANTIMONY SULFIDE ORE ACCORDING TO SELECTIVE FLOTATION SCHEME Russian patent published in 2021 - IPC C22B11/00 C22B30/00 B03D1/12 B03D1/14 

FIELD: mineral dressing.

SUBSTANCE: invention relates to mineral dressing and can be used in the scheme of flotation enrichment of gold-antimony sulfide ores. Gold-antimony ore with inclusions of gold-containing iron sulfides in the form of pyrite and arsenopyrite is processed according to a selective flotation scheme, including activation with lead salts, flotation with sulfhydryl collectors. The antimony flotation operation is carried out with an activator - that of lead nitric acid at a low collector consumption of 12-25 g/t to obtain antimony concentrate. After that, gold-sulfide flotation is carried out to obtain a gold-sulfide concentrate, and gold-sulfide flotation is carried out with an increased consumption of sulfhydryl collectors of more than 50 g/t.

EFFECT: method improves efficiency and simplifies the processing of sulfide gold-antimony ores, reduces the content of gold and arsenic in antimony concentrate, which increases the recovery of gold and antimony in subsequent operations.

3 cl, 3 tbl, 4 ex