某难处理金矿石选冶工艺研究

为了给某难处理金矿石的开发提供技术依据，对其进行了详尽的选冶工艺试验研究。结果表明：采用单一浮选工艺处理该矿石，在-200目占80%的磨矿细度下，可以获得金品位为57.32 g/t、金回收率为84.00%的金精矿；采用浮选-尾矿氰化浸出工艺处理该矿石，可以先在-200目占70%的磨矿细度下获得金品位为60.09 g/t、金回收率为82.26%金精矿，然后在-200目占90%的再磨细度下获得金浸出率为10.70%的浸出液，金的总回收率达92.96%。根据试验结果，推荐采用浮选-尾矿氰化浸出工艺。

Study on Beneficiation and Metallurgy Processing of a Refractory Gold Ore

In order to provide the technical basis for developing a refractory gold ore, a detailed study on beneficiation and metallurgical processing was carried out.The results showed that: with grinding fineness of -200 mesh 80%, gold concentrate with Au grade and recovery of 57.32 g/t and 84.00% was obtained respectively by single flotation process.Through the process of floatation-tailing cyanide leaching, gold concentrate with Au grade and gold recovery of 60.09 g/t and 82.26% was firstly obtained under the grinding fineness of -200 mesh 70%.Then, gold leaching solution with Au leaching rate of 10.70% was achieved under regrinding fineness of -200 mesh 90%.Total gold recovery reached 92.96%.Therefore, according to the test results, the process of flotation-tailings cyanide leaching is recommended.