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对湖北恩施的典型高磷赤铁矿样品进行了非熔态分离提取实验研究.矿样基础特性研究表明,该矿为典型鲕状高磷赤铁矿,矿中铁元素与磷元素之间并未处于化学结合状态.据此采用高速气流磨技术,将其磨至平均粒度为2μm的超细粒度,观察发现铁元素与磷元素在各个超细矿粉颗粒中的含量分布不均匀,Fe、P化合物有所解离.进而采用流态化技术进行气力分离,设计制造了流态化装置,对超细矿粉的流态化特征进行研究,结果表明超细铁矿粉的流态化特征与常规细粉不同.基于富铁物料与富磷物料的密度差异,设计制造了气力分离装置,对超细高磷赤铁矿粉进行气力分离实验,初步实现了铁元素和磷元素的分离.
The typical high-phosphorus hematite samples in Enshi, Hubei Province were extracted and studied by non-melt separation method.The basic characteristics of ore samples were studied.The results show that the ore is a typical oolitic and high-phosphorus hematite ore, and there is no difference between iron and phosphorus in ore In accordance with the high-speed jet mill technology, grinding it to an average particle size of 2μm ultrafine particle size, the observation found that the content of iron and phosphorus elements in each ultrafine ore particles unevenly distributed, Fe, P The compounds are dissociated, and then the fluidized technology is used for the pneumatic separation. The fluidized device is designed and manufactured to study the fluidization characteristics of the ultrafine ore powder. The results show that the fluidization characteristics of the ultrafine iron ore powder and Based on the difference of the density of iron-rich material and phosphorus-rich material, a pneumatic separation device was designed and manufactured to conduct the gas separation experiment on ultra-fine high-phosphorus hematite powder, and the separation of iron and phosphorus was initially achieved.