Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440

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THE INFLUENCE OF SULPHUROUS AROMATIC CONCENTRATE ON FLOTATION OF GOLD-BEARING PYRITE

Antsiferova S.A. 1 Markosyan S.M. 1 Suvorova O. N. 1
1 Institute of Chemistry and Chemical Technology SB RAS
The aim of the research was to investigate the influence of sulphurous aromatic concentrate (SAC) and its combinations with potassium butyl xanthat (PBX) on the efficiency of flotation of gold-bearing pyrite of varying size. Mineral fractions of size -0.25+0.1, -0.1+0.074, -0.074+0.044, and -0.044+0.02 mm with a mass fraction of pyrite 91,7–92,3% and gold content of 38.1 to 54.5 g/t were used for flotation experiments. The experiments were conducted in an apparatus for microflotation in the presence of a frother (T-80) in a pH-environment favorable for the flotation of pyrite and gold (4,85–5,0). It was found out that the SAC has had collecting capacity with respect to pyrite samples of various sizes and it could independently successfully flotate fractions of size -0.25+0.1 and -0.1+0.074 mm with a slight loss of recovery as compared with PBX. It was also shown that for the flotation of pyrite of size up to 0,044 mm, it is possible to use the SAC (50 %) in combination with PBX without loss of recovery. For the flotation of a fine fraction of pyrite (-0.044 0.02 mm), usage of a combination PBX/ SAC with ratio of reagents usage from 1.0/0.1 to 1.0/0.75 mg/g gives a recovery gain of 9,8 %.