不同粒度下微山稀土矿物颗粒赋存研究

采用工艺矿物学自动分析仪(BPMA)、扫描电子显微镜等先进设备对山东微山稀土矿物中稀土的赋存状态进行了研究.结果表明,矿物中的稀土矿物主要赋存于氟碳酸岩中,极少数赋存于独居石、铈磷灰石中.同时稀土矿物与方解石、天青石、萤石、石英等嵌布十分密切.通过对不同研磨时间的矿物颗粒进行分析,发现稀土矿物颗粒中方解石呈微细胞颗粒分...

Study on the occurrence of rare earth mineral particles in weishan with different particle sizes

BPMA and SEM were used to study the occurrence state of rare earth minerals in weishan, shandong province. The results showed that rare earth minerals existed mainly in fluorocarbons, few in monazite and cerium apatite. At the same time, rare earth minerals and calcite, lapis lazuli, fluorite, quartz embedded very close.Through the analysis of the mineral particles with different grinding time, it is found that the calcite in the rare earth mineral particles is microcellular particles distributed in the rare earth mineral particles, which is difficult to separate and is an important factor causing low grade.The variation curves of the particle size and dissociation degree of fluorocarbon particles in rare earth minerals were explored, and it was found that in the particle size distribution diagram, the dissociation degree reached the maximum when 20 m-50 m was at the peak, and the dissociation degree of the particle size was too fine, which affected the flotation of rare earth