青海某低品位铷矿中铷的赋存状态及选矿工艺

Occurrence State and Beneficiation Technology of Rubidium in a Low Grade Rubidium Ore in Qinghai Province

这是一篇矿业工程领域的论文,介绍了青海某低品位铷矿石的工艺矿物学研究和选矿工艺研究结果。通过化学分析、镜下鉴定、MLA、电子探针分析等手段,查明了矿石中铷的赋存状态,确定了矿石主要有用元素为Rb,主要含铷矿物为云母、钾长石。在此基础上,对该矿石进行了破碎-粗粒云母筛分-磁-重-浮联合工艺选别,回收了矿石中的铌钽和铷,还通过实验证明了所得浮选云母精矿中的锂铷铯具良好可浸性,作业浸出率可达到82%以上。

This is an essay in the field of mining engineering,which introduces the research results of process mineralogy and mineral processing technology of a low-grade rubidium ore from Qinghai Province.By means of chemical analysis,microscopic identification,MLA and electron probe microanalysis,the occurrence of rubidium in the ore is found out.The main useful element of the ore is Rb,and the main rubidium bearing minerals are mica and potash feldspar.On this basis,the combined process of crushing,coarse-grained mica screening,magnetic gravity gravity flotation was used to separate the ore,and Nb,Ta and Rb were recovered from the ore.The test results show that the lithium,rubidium and cesium in the flotation mica concentrate has good leachability,and the operation leaching rate can reach more than 82%.