摘要
某金矿石金品位1.98 g/t,嵌布粒度较粗,79.00%的金以裸露及半裸露金的形式存在。为合理开发利用该金矿资源,进行选矿试验研究。结果表明,矿石适宜采用尼尔森选矿机先回收粗粒金、重选尾矿采用丁基黄药+丁铵黑药作组合捕收剂进行浮选提金。在磨矿细度-0.074mm 69.8%的条件下,原矿1粗2精重选—重选尾矿1粗3精2扫闭路浮选试验可获得重选金精矿品位5 250.00 g/t、回收率53.03%和混合金精矿(重选中矿与浮选精矿合并)品位41.26 g/t、回收率42.52%的良好指标,实现了该金矿资源的高效回收利用。
A gold ore contains gold 1. 98 g/t,and disseminated grain size is coarse,79% gold exsists in form of exposed and semi exposed gold. To rational exploitate and utilizate the gold ore resource,beneficiation experiment was conducted. Results show that,Knelson concentrator was suitable to recycle coarse gold in the ore and flotation with butyl xanthate and ammonium dibutyl dithiophosphate combined collector recover gold from gravitation separation tailings. At the grinding fineness of 69. 8% passing0. 074 mm,via one roughing-two cleaning gravitation separation-gravitation separation tailings one roughing-three cleaning-two scavenging closed-circuit flowsheet,gravitation separation concentrate wtih gold grade of 5 250. 00 g/t,recovery of 53. 03% and bulk concentrate（ gravitation separation middlings and flotation concentrate combined） wtih gold grade of 41. 26 g/t,recovery of 42. 52% were obtained. beneficiation index was good,and high efficiency recovery and utilization of the gold ore resource was realized.
出处
《现代矿业》
CAS
2017年第10期99-102,共4页
Modern Mining
