Abstract:

Dongbeizhai gold ore,as a low grade arsenic-bearing carbonaceous ore，is a refractory ore.Au recovery is nearly zero by direct cyanidation from ore.The gold concentrate containing A u 18.02 g/t,91.52 recovery can be gained by the process of stage-rinding and carrier flotation.1 arge amount of tailings are discharged.Better results can be obtained by roasting flotation concentrate cyanidation gold extraction process and the recovery of total gold has achieved up to 85.32 .

Key words: refractory gold ore, roasting, cyanidafion, flotation