CAJ | 학술논문

某金矿石具有微细粒、高砷、含碳、含泥量大的特点,其金矿物粒度及载体矿物粒度均很细,且金的赋存状态复杂,除与黄铁矿等硫化物矿物密切共生外,还有部分嵌布于石英等脉石矿物中,采用单一浮选或氰化浸出工艺均难以获得理想的回收指标。通过采用调整剂HS,两段磨矿两段选别流程,可获得金品位23.62 g/t、回收率67.22%的金精矿；采用试剂YC对浮选闭路尾矿进行预处理氰化浸出,金作业浸出率为71.25%,对原矿金回收率为23.36%,联合流程金总回收率可达到90.58%,技术指标较好。
모금광석구유미세립、고신、함탄、함니량대적특점,기금광물립도급재체광물립도균흔세,차금적부존상태복잡,제여황철광등류화물광물밀절공생외,환유부분감포우석영등맥석광물중,채용단일부선혹청화침출공예균난이획득이상적회수지표。통과채용조정제HS,량단마광량단선별류정,가획득금품위23.62 g/t、회수솔67.22%적금정광；채용시제YC대부선폐로미광진행예처리청화침출,금작업침출솔위71.25%,대원광금회수솔위23.36%,연합류정금총회수솔가체도90.58%,기술지표교호。
The gold ore is fine-grain disseminated,high arsenic,and carbonaceous. The dissemination particles of gold minerals and gold carrier minerals are relatively fine. The occurrence of gold minerals is quite complex. Apart from coexisting with pyrites and other sulfide minerals,some gold particles are embedded in quartz and similar gangue minerals,which makes it difficult for simple flotation or cyanide leaching process to achieve satisfactory indexes. With the application of HS modifier and two-stage grinding-two-stage flotation circuit,a gold concentrate with Au grade of 23. 62 g/t and recovery rate of 67. 22 % can be obtained. The flotation tailings were pretreated by YC before cyanide leaching,and then a gold leaching rate of 71. 25 % and a gold recovery ( to the raw ore) of 23. 36 % can be ob-tained. By means of the combined process,the total gold recovery rate can reach 90. 58%,indicating satisfactory inde-xes.