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现代矿业 ›› 2025, Vol. 41 ›› Issue (12): 96-99.

• 矿物加工工程 • 上一篇    下一篇

江西某黑滑石选矿试验研究

赖 凌1 付先荣1 陈 军2   

  1. 1. 江西省地质局第八地质大队;2. 江西省地质调查勘查院基础地质调查所
  • 出版日期:2025-12-25 发布日期:2026-01-23

Experimental Research on Beneficiation of a Black Talc from Jiangxi

  1. 1. No. 8 Geological Brigade of Jiangxi Provincial Bureau of Geology;2. Basic Geological Survey Institute of Jiangxi Geological Survey and Exploration Institute
  • Online:2025-12-25 Published:2026-01-23

摘要: 江西广丰黑滑石矿床是中国重要的非金属矿资源,其矿物成分以滑石为主,伴生白 云石、石英及有机质。针对黑滑石矿石特性,开展了选矿试验研究,旨在优化工艺流程、提高资源 利用率并推动产业升级。试验以广丰某黑滑石矿为样本,通过偏光显微镜、X 射线衍射、化学法等 分析手段,明确了矿石的矿物组成与结构特征,发现滑石与脉石矿物紧密共生,且有机质含量较 高,导致原矿白度偏低。基于此,研究设计了浮选+煅烧工艺,结果表明,浮选闭路流程试验获得了 产率 77.52%、滑石品位 83.28%、滑石回收率 87.29% 的滑石浮选精矿,浮选精矿经焙烧获得产率 71.22%、MgO 含量 31.05%、白度 83.94% 的滑石精矿,可以满足下游工业应用需求。

关键词: 黑滑石, 浮选, 磨矿细度, 药剂

Abstract: The Guangfeng black talc deposit in Jiangxi Province is an important non-metallic miner‐ al resource in China. Its mineral composition is mainly talc,accompanied by dolomite,quartz and organic matter. According to the characteristics of black talc ore,the beneficiation test was carried out to optimize the process flow,improve the utilization rate of resources and promote industrial upgrading. Taking a black talc ore in Guangfeng as a sample,the mineral composition and structural characteristics of the ore were clarified by means of polarizing microscope,X-ray diffraction and chemical method. It was found that talc and gangue minerals were closely symbiotic,and the content of organic matter was high,resulting in low whiteness of the raw ore. Based on this,the flotation + calcination process was studied and designed. The results showed that the flotation concentrate with yield of 77.52%,talc grade of 83.28% and talc recovery of 87.29% was obtained by flotation closed-circuit process test. The talc concentrate with yield of 71.22%, MgO content of 31.05% and whiteness of 83.94% was obtained by roasting the flotation concentrate,so as to meet the needs of downstream industrial applications.

Key words: black talc, flotation, grinding fineness, reagents