《黄金》杂志(月刊) 第38卷 总第395期
2017年01月 第01期
目次
选矿与冶炼
  • 微细粒含砷难处理金矿石提金工艺研究……雷永康,李 青,万宏民,靳建平
  • 摘 要:针对某微细粒含砷难处理金矿石性质,进行了金回收工艺试验研究。矿石中金品位4.14 g/t,砷品位1.80 %,金属矿物以赤褐铁矿、毒砂为主。矿石中金的粒度较细,以显微金为主,约占矿石中金的66.67 %。通过对单一浮选、浮选氰化浸出、全泥氰化浸出等工艺流程进行探索试验表明:采用浮选氰化浸出流程处理该矿石,金总回收率达84.82 %,但金精矿中砷含量超标,可采用冶金方法进行后续金精矿降砷试验;采用原矿全泥氰化浸出流程,金回收率73.61 %,浸渣中砷质量分数1.71 %左右,指标相对较好。
  • 关键词:微细粒;砷;金矿石;浮选;浮选氰化浸出;全泥氰化浸出

    Experimental study on gold recovery from refractory arsenic-containing micro-fine gold ores……Lei Yongkang,Li Qing,Wan Hongmin,Jin Jianping

    AbstractThe paper carried out experimental research on gold recovery process according to the property of one refractory arsenic-containing micro-fine gold ore.The gold grade of the ore is 4.14 g/t,arsenic grade is 1.80 %,and the main minerals are hematite,limonite and arsenopyrite.Gold is deposited in fine grains,mainly taking the form of microscopic gold that takes up 66.67 % of the entire gold grains in ores.Experiments that have explored single flotation,flotation-cyanidation,all-sliming cyanidation and such processes show that flotation-cyanidation process can obtain a total gold recovery rate of 84.82 % but excessive amount of arsenic in gold concentrates as well,which,however,can be subjected to metallurgic tests to reduce arsenic; all-sliming cyanidation can obtain a gold recovery of 73.61 % with arsenic grade of 1.71 % in leaching slags,which is good index.

    Keywords:micro-fine grain; arsenic; gold ore; flotation; flotation-cyanidation; all-sliming cyanidation


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