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为了用含钛矿物生产高品位的TiO_2必须把钛矿中的大部份铁除去。在工业生产中通常是用热还原法处理含钛矿物,把钛矿中的铁还原成金属铁而达到的,这就很容易把铁与钛分开。铁被除去以后,得到一种富钛料,这种富钛料在工业上通常称为钛渣。可是,由于这种钛渣中三价钛（Ti~（3+））的含量高,因而作为供给生产TiO_2颜料工艺的原料还是不适用的。三份钛含量高主要是由于上述除铁的热还原过程造成的,因为随着铁的还原,热还原过
Most of the iron in the titanium ore has to be removed for the production of high-grade TiO 2 with titanium-containing minerals. In industrial production, it is common to treat the titaniferous minerals by the thermal reduction method, which is achieved by reducing the iron in the titanium ore to metallic iron, which makes it easier to separate the iron from the titanium. After the iron has been removed, a titaniferous material is obtained which is commonly referred to in the industry as titanium slag. However, due to the high content of trivalent titanium (Ti 3+) in this titanium slag, it is not suitable as a raw material for the production of TiO 2 pigment. The high titanium content is mainly due to the above thermal reduction process of iron removal, since as the iron is reduced, the heat is reduced