大宝山含钨褐铁矿中钨的赋存状态与嵌布特征  

Occurrence state and distribution characteristics of tungsten in Dabaoshan tungsten-bearing goethite

作　　者：唐鸿鹄[1,2] 刘丙建 王翠 张雄星 韩海生[1,2] 王丽[1,2] 曹杨[1,2] 孙伟[1,2] Hong-hu TANG;Bing-jian LIU;Cui WANG;Xiong-xing ZHANG;Hai-sheng HAN;Li WANG;Yang CAO;Wei SUN(School of Minerals Processing and Bioengineering,Central South University,Changsha 410083,China;Hunan International Joint Research Center for Efficient and Clean Utilization of Critical Metal Mineral Resources,Central South University,Changsha 410083,China)

机构地区：[1]中南大学资源加工与生物工程学院,长沙410083 [2]中南大学湖南省关键金属矿产资源高效清洁利用国际联合研究中心,长沙410083

出　　处：《Transactions of Nonferrous Metals Society of China》2024年第4期1263-1274,共12页中国有色金属学报（英文版）

基　　金：the financial support from the National Key R&D Program of China(No.2022YFC2904501);the National Natural Science Foundation of China(Nos.52004335,91962223);the Natural Science Foundation of Hunan Province,China(No.2023JJ20071);Hunan International Joint Research Center for Efficient and Clean Utilization of Critical Metal Mineral Resources,China(No.2021CB1002)。

摘　　要：通过多种分析方法,探究广东大宝山含钨褐铁矿的物相组成、元素分布等工艺矿物学特征,以揭示矿石中关键金属钨的赋存状态与嵌布特征。X射线荧光分析(XRF)、粉末X射线衍射(XRD)以及扫描电子显微镜和能谱(SEM-EDS)结果表明:矿石中主要矿物为含钨褐铁矿和石英,关键金属钨品位为1.35%。微区X射线衍射(Micro-XRD)和矿物解离度分析仪(MLA)结果表明:钨主要赋存于高铁钨华((W,Fe)(O,OH)_(3))中,而高铁钨华则以剥离和带状形式紧密分布在褐铁矿中。同时,还定量分析了有价元素在各主要矿物中的赋存和分布情况,并讨论了含钨褐铁矿风化演变和形成机制。最终提出了一种选冶联合分选回收流程,为高效回收含钨褐铁矿中关键金属钨提供理论基础。The phase composition and elemental distribution of the tungsten-bearing goethite in Dabaoshan,Guangdong Province,China,were explored through various analytical methods,aiming to reveal the occurrence state and embedding characteristics of critical metal W in the ore.X-ray fluorescence analysis(XRF),powder X-ray diffraction(powder XRD),and scanning electron microscopy and energy dispersive spectroscopy(SEM−EDS)results show that the grade of critical metal W is 1.35%,and its main minerals are tungsten-bearing goethite and quartz.Micro-area XRD and mineral liberation analyzer(MLA)results indicate that ferrotungsten ore((W,Fe)(O,OH)_(3)),the tungsten-bearing phase,was mainly present in the form of stripped and banded goethite.The valuable element distribution in major minerals was also quantitatively determined.Moreover,a possible mechanism for the evolution and formation of tungsten-bearing goethite weathering was discussed,and a combined flowsheet of beneficiation-metallurgical separation was proposed to provide a theoretical basis for the high-efficient recovery of critical metal W from tungsten-bearing goethite.

关 键 词：含钨褐铁矿 赋存状态 微区X射线衍射 

分 类 号：P618.67[天文地球—矿床学] P618.31[天文地球—地质学]