Research on the Process Mineralogy of Iron Ore from Qidashan
In order to provide guidance for the determination of the process flow of the new production line of Qidashan concentrator,the process mineralogy research is carried out for Qidashan iron ore.The re-sults show that the TFe grade of the ore is 27.44%,and the main impurity SiO2 content is 55.48%.The iron in the ore mainly exists in the form of magnetite,with a distribution rate of 49.93%,followed by hematite,with a distribution rate of 35.62%.The oxidation degree of magnetite in the ore is deep,and some magnetite has been oxidized to pseudo-hematite or hematite.The disseminated particle size of magnetite and hematite is similar.The main gangue mineral is quartz,which is often produced in aggregate form.The embedding particle size is coarser than that of iron minerals,which is better to conduct the process of coarse-grained pre-selection and tailings discarding.Therefore,it is recommended to introduce the high-pressure roller ul-tra-fine crushing-coarse particle pre-concentration(low intensity magnetic-high intensity magnetic separa-tion)process in the process design of the new production line to achieve effective pre-concentration and tail-ings discarding to reduce the subsequent grinding load.
process mineralogymagnetitehematitedissemination characteristics
万方数据
维普
