广西某地区沉积型和堆积型铝土矿溶出性能分析  

Analysis of Dissolubility of Sedimentary Bauxite and Accumulative Bauxite from Guangxi

作　　者：王明理 皮溅清 王一霖 赵志强 黄桂华 WANG Ming-li;PI Jian-qing;WANG Yi-lin;ZHAO Zhi-qiang;HUANG Gui-hua(Hangzhou Kechuang Nonferrous Metals Research Co Ltd,Lin′an 311300,Zhejiang,China;School of Metallurgy and Environment,Central South University,Changsha 410083,Hunan,China;Guangxi Tiandong Jinxin Chemical Industry Co Ltd,Baise 533000,Guangxi,China)

机构地区：[1]杭州科创有色金属研究有限公司,浙江临安311300 [2]中南大学冶金与环境学院,湖南长沙410083 [3]广西田东锦鑫化工有限公司,广西百色533000

出　　处：《矿冶工程》2021年第4期84-87,92,共5页Mining and Metallurgical Engineering

基　　金：国家自然科学基金(51604309)。

摘　　要：模拟拜耳法铝土矿溶出及赤泥磁选工艺,研究了广西地区典型的堆积型和沉积型铝土矿中铝矿物的溶出性能及赤泥中铁矿物的分选性能。结果表明:堆积型铝土矿中各元素分布呈现各自集中、相对分散的特点,铝矿物主要为一水硬铝石,铝相对溶出率达93.58%,赤泥中的铁矿物主要为赤铁矿,铁精粉全铁含量为55.71%。沉积型铝土矿分化程度较低,各元素之间嵌布紧密,矿石中的铝矿物主要是一水硬铝石和绿泥石物,铝相对溶出率为87.73%,赤泥中的铁矿物主要是绿泥石,铁精粉全铁含量仅为31.63%。The typical sedimentary bauxite and accumulative bauxite from Guangxi was taken to study the dissolution of alumina in the bauxite and the separation of iron mineral from red mud by adopting Bayer process and magnetic separation process.It is shown that in the accumulative bauxite,each element presents a concentrated distribution,but relatively dispersed from each other;diaspore is the dominant aluminum mineral and the relative alumina dissolution rate reaches 93.58%;the iron mineral in red mud is predominately hematite and the TFe content of iron concentrate powder is 55.71%.The sedimentary bauxite shows lower differentiation,with elements closely disseminated;the dominant aluminum minerals in the ore are diaspore and chlorite,and the relative dissolution rate of alumina is 87.73%;the iron mineral in red mud is predominantly chlorite and the TFe content of iron concentrate powder is only 31.63%.

关 键 词：铝土矿 堆积型 沉积型 溶出率 选铁 

分 类 号：TF111[冶金工程—冶金物理化学]