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现代矿业 ›› 2025, Vol. 41 ›› Issue (11): 100-103.

• 矿物加工工程 • 上一篇    下一篇

广西某低品位锡矿选矿工艺试验

全柏飞1 覃林明2   

  1. 1. 广西高峰矿业有限责任公司;2. 广西冶金研究院有限公司
  • 出版日期:2025-11-25 发布日期:2025-12-22

Beneficiation Process Test of a Low Grade Tin Ore in Guangxi

  1. 1. Guangxi Gaofeng Mining Co.,Ltd.;2. Guangxi Metallurgical Research Institute Co.,Ltd.
  • Online:2025-11-25 Published:2025-12-22

摘要: 广西某低品位锡矿为实现锡的高效回收,根据原矿性质,采用跳汰、螺旋溜槽粗细分级 抛尾—摇床精选—浮选脱硫—磁选除杂的工艺流程进行了试验研究。原矿经过跳汰和螺溜抛尾后, 可获得锡品位 0.83%、锡回收率 73.19% 的螺溜精矿;对螺溜精矿进行摇床精选,摇床中矿经再磨再 选,最终得到的摇床精矿锡品位14.09%,对原矿回收率58.62%;摇床精矿采用浮选+磁选除杂工艺流 程,可获得锡品位45.09%的锡精矿,对原矿锡回收率48.78%;磁选除杂作业中的磁性物需再磨再选, 以进一步提升锡回收率。综合全流程试验采用预先分级抛尾—摇床重选—摇床精矿浮选脱硫—磁 选除铁的工艺流程,最终得到的高品位锡精矿锡品位 43.03%,锡回收率 48.78%;中品位锡精矿品位 16.58%,锡回收率7.27%;磁性物中锡品位3.43%,可作为低度锡精矿,锡回收率2.33%;锡精矿合计锡 回收率58.38%,总尾矿中锡品位降至0.078%,实现了该锡矿资源的高效回收。

关键词: 低品位锡矿, 抛尾, 摇床重选, 磁选

Abstract: In order to realize the efficient recovery of tin from a low-grade tin ore in Guangxi,ac⁃ cording to the properties of the raw ore,the process flow of jigging,spiral chute coarse and fine classifica⁃ tion tailings discarding-shaking table cleaning-flotation desulfurization-magnetic separation and impurity removal is studied.The spiral chute concentrate with tin grade of 0.83% and tin recovery of 73.19% can be obtained after jigging and spiral chute tailing discarding. The spiral chute concentrate is subjected to shak⁃ ing table cleaning,and the middle ore of the shaking table is reground and reselected. The final shaking ta⁃ ble concentrate with tin grade of 14.09% and raw ore recovery rate of 58.62% is obtained.Tin concentrate with tin grade of 45.09% and tin recovery of 48.78% can be obtained by flotation + magnetic separation im⁃ purity removal process. The magnetic material in the magnetic separation impurity removal operation needs to be reground and re-selected to further improve the tin recovery rate.The comprehensive whole process test adopts the process flow of pre-classification discarding tailings-rocking table gravity separation-rock⁃ ing table concentrate flotation desulfurization-magnetic separation to remove iron. The final high-grade tin concentrate with tin grade of 43.03% and tin recovery of 48.78% is obtained. The grade of medium grade tin concentrate is 16.58%,and the recovery rate of tin is 7.27%. The tin grade in the magnetic material is 3.43%,which can be used as low-grade tin concentrate with tin recovery of 2.33%. The total tin recovery rate of tin concentrate is 58.38%,and the tin grade in the total tailings is reduced to 0.078%,which real⁃ izes the efficient recovery of tin ore resources.

Key words: low grade tin ore, discarding tailings, shaking table gravity separation, magnetic separation