综合利用含锑砷金精矿关键集成技术试验研究

Experimental Study on Key Integrated Technology for Comprehensive Utilization of Antimony-Arsenic-Bearing Gold Concentrate

针对某含锑砷金精矿,通过直接氰化试验、两段焙烧氰化试验、直接氰化—浮选回收锑—浮选尾矿两段焙烧氰化试验等工艺技术进行试验研究。结果表明,采用一级直接氰化、二级氰化尾矿浮选富集锑精矿、三级为锑浮选尾矿两段焙烧氰化关键集成技术方法,含锑含砷金精矿直接氰化金、银浸出率分别为31.22%、85.19%,氰化尾矿浮选产出锑含量为38.80%的锑精矿,精矿产率为10.50%,锑回收率达到90.94%,锑浮选尾矿采用两段焙烧氰化金、银回收率分别达到90.07%、52.70%,该关键集成技术方法使金、银、锑的综合回收率分别达到93.56%、92.99%、90.94%,显著提高了有价金属资源的综合回收效果,实现了含锑砷金精矿资源的高值化、资源化利用。

Direct cyanidation test,two stage roasting cyanidation test,direct cyanidation-flotation recovery of antimony-flotation tailings two stage roasting cyanidation test were carried out for a gold concentrate containing antimony and arsenic.The results show that the primary direct cyanidation,the secondary cyanidation tailings flotation enrichment of antimony concentrate,and the third stage two-stage roasting cyanidation of antimony flotation tailings are the key integrated technical methods,the leaching rate of gold and silver from gold concentrate containing antimony and arsenic is 31.22%and 85.19%,respectively.Antimony concentrate with antimony content of 38.80%is produced from cyanide tailings flotation.The concentrate yield is 10.50%and antimony recovery is 90.94%,the recovery of gold,silver and antimony from antimony flotation tailings by two-stage roasting is 90.07%and 52.70%,respectively.The comprehensive recovery of gold,silver and antimony is 93.56%,92.99%and 90.94%,respectively,the comprehensive recovery effect of valuable metal resources is obviously improved,and the high-value and resourceful utilization of antimony-arsenic-bearing gold concentrate is realized.