EXTRACTING GOLD FROM TAILINGS BY EXTRACTION-FLOTATION METHOD

A systematic test of collecting gold from flotation tailings was carried out with four types of chemicals. It is found by flotation tests that ethylene bis (dimethyldithiocarbamate) is the best coll ection reagent which can beneficiate gold from about 5g/t Au of tailings to obtain 2250g/t An of aurine, i. e. the enrichment ratio is as high as 450 times. Gold could be successfully extracted from waste ores by flotation-extraction method. This method can be widely applied in industry, and supply an approach for sufficiently mineral resources in our country.