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Process mineralogical study of an oxidized lead-zinc ore in Xinjiang

  • English Author:
  • Zhao Rongyan, Wang Hong, Nan Zhangying

  • Unit:
  • (Xianyang Non-metallic Mineral Research & Design Institute Co., Ltd.)
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Abstract:

To effectively recover lead and zinc, a process mineralogical study was conducted on oxidized lead-zinc ore using chemical analysis and mineral liberation analysis based on their occurrence status in the ore. The resultsshow that the ore contains 2.55 % Pb and 18.86 % Zn, with a silver content of 40.88 g/t as an associated element. Theore exhibits a complex intergrowth relationship among lead‑bearing minerals, zinc‑bearing minerals, quartz, and smith‑sonite, making conventional flotation methods difficult to apply effectively. A combined process involving sulfide-oxidemixed flotation of lead followed by acid leaching of zinc from the lead tailings is recommended for lead zinc recovery.This study provides a valuable reference for the beneficiation of similar ores.

Keywords:

oxidized lead-zinc ore; process mineralogy; occurrence status; cerussite; smithsonite; mineral disso‑ciation degree