摘要
刚果(金)马诺诺地区伟晶岩型锂、锡、铌钽资源丰富,历史生产过程中,只对锡和铌钽矿物进行回收,含锂矿物则随尾矿排放并堆存至今。为确定尾矿中含锂矿物的赋存特征,通过综合运用粒度分析、X射线荧光光谱分析(XRF)、化学多元素分析、X射线衍射、扫描电镜等方法和手段,对某尾矿矿样进行了含锂矿物的工艺矿物学研究。结果表明,该含锂尾矿样品Li_(2)O品位为1.05%,矿石中的锂元素95.04%分布于锂辉石中。矿样中锂辉石矿物含量为13.1%,锂辉石以中粗粒嵌布为主,与其他矿物连生关系简单,腐化程度较低,锂辉石中Li_(2)O含量为7.9%。通过含锂矿物的工艺矿物学研究,确定该含锂尾矿属于锂辉石型(尾)矿床,具有较好的选矿工艺矿物学指标,为尾矿中锂辉石的回收提供了技术依据。
The Manono region of the DRC is rich in pegmatite-type lithium,tin,niobium and tantalum resources.In the historical production process,only tin and niobium tantalum minerals were recovered,while lithium-containing minerals were discharged with tailings and stored until now.To determine the occurrence characteristics of lithium-containing minerals in tailings,the process mineralogy of lithium-containing minerals in tailings samples was studied by particle size analysis,X-ray fluorescence spectroscopy(XRF),chemical multi-element analysis,X-ray diffraction,scanning electron microscopy,and other comprehensively methods.The results indicate that the Li_(2)O grade of the lithium-containing tailings sample is 1.05%,and 95.04%of the lithium element in the ore is distributed in spodumene.The mineral content of spodumene in the raw tailing ore sample is 13.1%.Spodumene is mainly distributed in medium-coarse grains and has a simple association with other minerals,with low weathering degree.The Li_(2)O content in spodumene is 7.9%.Through the study of process mineralogy of lithium-containing minerals,it has been determined that the lithium-containing tailings belong to the spodumene-type(tailings)deposit,with good mineralogical indicators for mineral processing,providing a technical basis for the recovery of spodumene from tailings.
作者
盛涛
王武名
雷志兰
张书超
李志军
孙聚利
SHENG Tao;WANG Wu-ming;LEI Zhi-lan;ZHANG Shu-chao;LI Zhi-jun;SUN Ju-li(Zhejiang Huayou Cobalt Company Limited,Tongxiang 314500,China;Geological Bureau of Jiangsu Province,Nanjing 210007,China;Hunan Research Institute of Nonferrous Metals Co.,Ltd.,Changsha 410100,China)
出处
《岩石矿物学杂志》
北大核心
2025年第4期995-1002,共8页
Acta Petrologica et Mineralogica
关键词
工艺矿物学
尾矿
锂辉石
赋存状态
刚果(金)
process mineralogy
tailings
spodumene
occurrence state
Democratic Republic of Congo(DRC)
