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现代矿业 ›› 2026, Vol. 42 ›› Issue (07): 150-153,158.

• 矿物加工工程 • 上一篇    下一篇

江西某金矿浮选工艺试验

刘金刚1 周强太1 王美安2   

  1. 1. 江西省地质局第八地质大队;2. 江西理工大学矿业工程学院
  • 出版日期:2026-07-25 发布日期:2026-08-14

Flotation Process Test of a Gold Mine in Jiangxi

LIU Jingang1 ZHOU Qiangtai1 WANG Meian2   

  1. 1. The Eighth Geological Brigade of Jiangxi Provincial Geological Bureau; 2. School of Mining Engineering,Jiangxi University of Science and Technology
  • Online:2026-07-25 Published:2026-08-14

摘要: 为了提高江西某低品位金矿石金回收率,实现载金矿物的高效富集,针对矿石中的 金主要赋存于黄铁矿和毒砂中的特点,开展了浮选回收工艺试验。在原矿性质研究的基础上,对 磨矿细度及调整剂、活化剂、捕收剂的种类与用量等浮选条件进行了系统优化,并进行了开闭路 流程试验。试验结果表明:原矿金品位为 2.01 g/t,主要载金矿物为黄铁矿和毒砂;在磨矿细度 为-0.074 mm75%、碳酸钠用量 600 g/t、硫酸铜用量 50 g/t、组合捕收剂异戊基钠黄药与丁铵黑药总 用量 150 g/t(质量比 4∶1)、2 号油用量 22.5 g/t 的条件下,采用 2 粗 2 扫 2 精、中矿顺序返回闭路流程, 获得了金品位 42.12 g/t、金回收率 90.59% 的金精矿,为类似难选含金矿石的浮选回收提供了技术 参考。

关键词: 金矿, 浮选, 黄铁矿, 组合捕收剂

Abstract: In order to improve the gold recovery rate of a low-grade gold mine in Jiangxi Province and realize the efficient enrichment of gold-bearing minerals,the flotation recovery process test is carried out according to the characteristics that gold in the ore mainly occurs in pyrite and arsenopyrite. On the ba⁃ sis of the study of raw ore properties,the flotation conditions such as grinding fineness and the types and dosage of regulators,activators and collectors are systematically optimized,and the open and closed cir⁃ cuit process tests are carried out.The results show that the gold grade of raw ore is 2.01 g/t,and the main gold-bearing minerals are pyrite and arsenopyrite. Under the conditions of grinding fineness of -0.074 mm 75%,sodium carbonate dosage of 600 g/t,copper sulfate dosage of 50 g/t,combined collector isoamyl so⁃ dium xanthate and ammonium dibutyl dithiophosphate total dosage of 150 g/t(mass ratio of 4∶1),2# oil dosage of 22.5 g/t,the gold concentrate with gold grade of 42.12 g/t and gold recovery of 90.59% is ob⁃ tained by using the closed-circuit process of two roughing,two scavenging and two cleaning,and the mid⁃ dle ore returning in sequence. It provides a technical reference for the flotation recovery of similar refracto⁃ ry gold-bearing ore.

Key words: gold ore, flotation, pyrite, combined collector