Abstract:

Along with the mine resource is dried up，in current，the reality subject of mining enterprise facing is how to maximize the utilization of mineral resources.A lot of cyanide residue which produced in cyanidation plant contains a variety of valuable elements，and these elements have high recycling value.Therefore，the research is to the maximize valuable metal recovery for the direction and the present stage of the cyanide residue in cyanide plant，containing part of valuable metals such as gold，silver and lead by adding special agents，including reasonable combination application of various regulator，dispersant，collector and frother.Using flotation method of a roughing，two times of scavenging and three times of cleaning flotation process，and finally got the quality lead concentrate of the lead grade greater than 20%，the recovery rate of greater than 50%，silver grade of more than 330 g/t and the gold grade of more than 9 g/t. In this way，the utilization rate of cyanide residue has been greatly enhanced and the huge enormous conomic benefit has been produced.From a certain meaning，this research has a stronger referential significance for the same type of mining enterprises.

Key words: Flotation, Valuable metal, Low grade, Cyanide residue, Au, Ag, Pb