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现代矿业 ›› 2025, Vol. 41 ›› Issue (06): 155-159.

• 矿物加工工程 • 上一篇    下一篇

江西某低品位锂钽铌矿综合回收试验研究

胡青华 方 鑫 黄朱里 丰 玄 杨天河   

  1. 江西赣锋锂业集团股份有限公司
  • 出版日期:2025-06-25 发布日期:2025-08-04

Experimental Study on the Comprehensive Recovery of a Low-grade Lithium-Tantalum-Niobium Ore from Jiangxi

  1. Jiangxi Ganfeng Lithium Group Co.,Ltd.
  • Online:2025-06-25 Published:2025-08-04

摘要: 为回收江西某 Li2O 品位 0.31%、Ta2O5品位 0.01%、Nb2O5品位 0.02% 的锂钽铌多金属矿 中的铁锂云母、钽铌铁矿,进行了选矿工艺流程试验。首先通过条件试验确定了磁选、浮选的最佳工 艺参数,然后对比了磁选—浮选—重选与磁选—重选—浮选流程试验结果,得出最佳的原则流程为 磁选抛除非磁性矿物—浮选回收锂—重选回收钽铌,可以得到 Li2O品位 2.32%,回收率 84.44% 的锂 云母精矿,以及Ta2O5品位3.59%、Ta2O5回收率37.03%、Nb2O5品位8.42%、Nb2O5回收率52.12%的钽铌 精矿,实现了锂钽铌的综合回收。

关键词: 锂钽铌矿, 磁选预抛尾, 浮选, 综合利用

Abstract: In order to recover iron-lithium mica and tantalum-niobium iron ore from a lithium-tanta⁃ lum-niobium polymetallic ore with Li2O grade of 0.31%, Ta2O5 grade of 0.01% and Nb2O5 grade of 0.02% in Jiangxi Province, the beneficiation process test was carried out. Firstly, the optimum process parameters of magnetic separation and flotation were determined by condition test. Then, the test results of magnetic sepa⁃ ration-flotation-gravity separation and magnetic separation-gravity separation-flotation process were com⁃ pared. The best principle process was magnetic separation to remove non-magnetic minerals-flotation recov⁃ ery of lithium-gravity separation to recover tantalum and niobium. The lepidolite concentrate with Li2O grade of 2.32% and recovery of 84.44%, and tantalum and niobium concentrate with Ta2O5 grade of 3.59%, Ta2O5 recovery of 37.03%, Nb2O5 grade of 8.42% and Nb2O5 recovery of 52.12% were obtained, which real⁃ ized the comprehensive recovery of lithium, tantalum and niobium.

Key words: lithium-tantalum-niobium ore, pre-throwing tails with magnetic separation, flotation, comprehensive utilization