论文部分内容阅读
采用XRD、原矿化学多项分析、镜下鉴定及扫描电镜等对广西金龙铝土矿的物质组成、化学成分、晶体化学和嵌布特征进行了系统研究.结果表明:矿石以一水硬铝石为主(36.5%),含三水铝石、黏土矿物、赤铁矿等;Al2O3平均品位约44%,铝硅比均值约3.57,属于低品位铝土矿石;一水硬铝石属斜方晶系双锥体类,在矿石中嵌布主要呈自形和半自形晶、豆状和鲕状、隐晶质和微晶集合体3种形式,与高岭石、叶腊石等嵌布伴生;高岭石属三斜晶系的层状结构硅酸盐矿物,多以隐晶质致密状或土状集合体形式嵌布;叶腊石属单斜晶系的二八面体结构含水铝硅酸盐矿物,以隐晶质细小鲕片状集合体形式嵌布,伴有赤铁矿、金红石等.
The chemical composition, chemical composition, crystal chemistry and interlacing characteristics of Guangxi Jinlong bauxite were systematically studied by XRD, multi-component analysis of ore chemistry, microscopic identification and scanning electron microscopy.The results show that the ore is composed of diaspore (36.5%), including gibbsite, clay minerals, hematite, etc .; average grade of about 44% Al2O3, aluminum-silicon ratio of about 3.57, belonging to low-grade bauxite; The pyramids of the tetragonal system are mainly composed of three types of self-shaped and semicircle-shaped crystals, bean-shaped and oolitic, cryptocrystalline and microcrystalline aggregates embedded in ores, such as kaolinite and pyrophyllite Associated; kaolinite is a triclinic stratiform structural silicate minerals, mostly in the form of cryptocrystalline dense or earthen aggregation; pyrophyllite monoclinic octahedral structure of hydrated aluminosilicate Salt minerals, in the form of cryptocrystalline small oolitic aggregates embedded with hematite, rutile and so on.