青海某低品位铁矿的工艺矿物学研究

对青海某沉积变质型低品位铁矿进行了工艺矿物学研究,研究结果表明,矿石铁低、硅高、有害杂质磷、硫低;铁矿物类型复杂且粒度微细,以磁铁矿为主,次为菱铁矿、赤铁矿,与含硅脉石矿物嵌布关系复杂,特别是与微细粒绿泥石嵌布关系密切。依据工艺矿物学研究成果,重点分析了矿石难选的最关键原因,为低品位沉积变质型难选铁矿开发利用提供矿物学参考依据。

Study on process mineralogy for some low-grade iron ore in Qinghai

According to the process mineralogy study on low-grade ores from a metamorphic iron deposit, the results show that the ores are characterized by low iron, high silicon, low phosphorus and low sulfur. The types of the iron minerals are complex which include dominant magnetite as well as minor siderite and hematite, and the grain size of the iron minerals is fine. The iron minerals have a very complex embedded relationship with the gangue minerals containing silicon, especially with the fine chlorite and the iron minerals. Based on the process mineralogy research, the key reasons of refractory have been emphatically analyzed, and the mineralogy reference is provided for the development and utilization of the low-grade metamorphic iron ores.