豫西铝土矿中镓的赋存状态研究  

STUDY ON OCCURRENCE STATE OF GALLIUN IN THE BAUXITE DEPOSITS OF WESTERN HENAN PROVINCE

作　　者：汤艳杰[1] 刘建朝[2] 贾建业[3] 

机构地区：[1]中国科学院广州地球化学研究所,广东广州510640 [2]长安大学地球科学与国土资源学院,陕西西安710054 [3]广州地理研究所,广东广州510070

出　　处：《西安工程学院学报》2002年第4期1-5,共5页Journal of Xi'an Engineering University

摘　　要：　豫西地区的铝土矿中含有丰富的镓资源。由于对矿石中镓的赋存状态研究程度很低,使镓未能有效回收。通过对铝土矿石的扫描电镜观察、电子探针成分分析、X射线衍射分析,并且完成了在盐酸介质中浸取镓的条件实验,初步得出了元素镓在铝土矿石中的赋存形式主要为:以类质同象置换的形式存在于矿物晶格之中;部分以吸附的形式存在于粘土矿物微粒和铝、铁的氢氧化物表面。The development and exploitation of gallium resource in bauxite have gradually become a hot issue in the comprehensive utilization of nature resources. The average content of Gallium in bauxite ores is comparatively high in the western areas of Henan Province, but because the occurrence states of Gallium in bauxite ores has not been invstigated thoroughly. Based on morphological observation with electron-probe and scan electron-microscope as well as X-ray diffraction analysis and a series of gallium immersion and absorption experiments by means of HCl digestion, the forms of gallium occurrence in bauxite ores are primarily determined. It is found that the gallium in bauxite exists mostly in the crystal lattice in the form of isomorphism, partly on the surface of clay minerals and hydroxide of aluminum and iron in the form of absorption. 

关 键 词：镓 铝土矿 赋存形式 类质同象置换 成矿地质条件 铁 回收工艺 浸出 

分 类 号：P618.74[天文地球—矿床学] TF84[天文地球—地质学]