摘要
西北地区某石英闪长岩型高泥低硫金矿原矿中金品位为3.21 g/t,硫品位为2.61%,矿石中易浮或易泥化脉石含量合计高达40.96%,结合矿石中金的赋存状态及嵌布特点,进行了系统的选矿试验研究。选择采用一粗三扫两精的全粒级浮选流程,在磨矿细度为-0.074 mm占比80%条件下,通过优化药剂制度,采用丁黄药+丁铵黑药(总用量为110 g/t,配比为10∶1)作为组合捕收剂,水玻璃+XJ-11(1000+500 g/t)作为组合矿泥抑制剂,有效解决了高含量泥质脉石对载金矿物上浮的干扰,提高了载金矿物的上浮速率,最终得到金回收率85.87%、金品位37.22 g/t的金精矿。研究结果可为石英闪长岩型的高泥低硫金矿浮选高效回收提供参考。
A systematic mineral processing experiment was conducted on a high-mud and low-sulfur content gold mine in the form of a certain quartz diorite in the northwest region,taking into account the occurrence and distribution characteristics of gold in the ore.The gold(Au)grade in the original ore was 3.21 g/t,the sulfur(S)grade was 2.61%,and the total content of easily floating or mud prone gangue in the ore was as high as 40.96%.Choose to use a full particle flotation process consisting of one roughing selection,three sweeping selections,and two cleaning selections.Under the condition of grinding fineness of -0.074 mm accounting for 80%,optimize the reagent system and use a combination of butyl xanthate and butyl ammonium black powder(total dosage of 110 g/t,ratio of 10:1)as the collector,water glass and XJ-11(1000+500 g/t)as the mud inhibitor,which effectively solved the interference of high content mud gangue on the flotation of gold carrying minerals,improved the flotation velocity of gold carrying minerals,and finally obtained a gold concentrate with a gold(Au)recovery rate of 85.87% and a gold(Au)grade of 37.22 g/t.The research results can provide suggestions for efficient flotation recovery of high-mud and low-sulfur content gold mines in the form of quartz diorite.
作者
宋水祥
祁忠旭
李杰
孙大勇
肖舜元
何湛
SONG Shuixiang;QI Zhongxu;LI Jie;SUN Dayong;XIAO Shunyuan;HE Zhan(Changsha Institute of Mining Research Co.,Ltd.,Changsha,Hunan 410012,China;Hunan Provincial Engineering Research Center for Comprehensive Utilization of Mine Solid Waste,Changsha,Hunan 410012,China)
出处
《矿业研究与开发》
CAS
北大核心
2024年第8期230-236,共7页
Mining Research and Development
关键词
石英闪长岩型
高泥低硫金矿
浮选
Quartz diorite form
High-mud and low-sulfur content gold mine
Flotation
