山东某钛铁矿石工艺矿物学研究

为配合山东某大型岩浆分异型钛铁矿资源的开发，对有代表性矿石进行了工艺矿物学研究。结果表明：①该钛铁矿中主要有用金属矿物为钛铁矿和磁铁矿，次要含钛矿物为榍石；脉石矿物主要是角闪石和辉石。②矿石中粗粒钛铁矿多与磁铁矿和榍石紧密共生，三者集合体的粒度主要集中在0.5～0.1 mm，细粒、微细粒钛铁矿和榍石呈固溶体分离结构多分布在辉石、角闪石和黑云母中，一般粒度小于0.004 mm。③矿石中角闪石、辉石等含钛矿物和钛铁矿、榍石极微细粒呈出熔结构产出将造成TiO₂回收率较低。④多达54.42%的铁赋存在硅酸盐、碳酸盐和金属硫化物中将造成铁回收率较低。因此，该矿石属难选钛铁矿石。

Process Mineralogy Study of a Titanium Iron Ore of Shandong

In order to meet the development of the a large magmatic shaped-type ilmenite resources，the research on the process mineralogy of a representative ore was carried out.Results show that:①The main useful minerals are ilmenite and magnetite in ilmenite ore，secondary titanium containing mineral is titanite，and gangue minerals are mainly amphibole and pyroxene.②Coarse ore ilmenite are closely associated with magnetite and sphene，and the size of three aggregates mainly concentrated in the 0.5 ~ 0.1 mm.With the solid solution isolating structure，fine，microfine ilmenite and sphene are distributed in pyroxene，hornblende and biotite in general，with particle size less than 0.004 mm.③That the titanium-containing minerals like amphibole and pyroxene，and ilmenite，titanite exist in a very fine particle isolating structure of solid solution is the main reason for lowering TiO₂ recoveries.④ As many as 54.42% of iron element exists in silicate，carbonate and metal sulfide is the main reason for low iron recovery.The ilmenite ore belongs to refractory ilmenite ore.