To provide a method for inexpensively producing a synthesized rutile of high quality from ilmenite ore.
This production method comprises heat-treating the ilmenite ore to oxidize it and convert it into a stable crystal phase consisting of two phases of (pseudobrookite + rutile), and selectively acquiring the rutile phase by sorting them out by using a magnetic field. The method forms a composition consisting of rutile (an R phase) and a pseudobrookite solid solution (a P phase) through oxidization at a comparatively low temperature in comparison with a titanium slag method, and sorts them out by using magnetism, so that the reduction of a large amount of energy and a cost can be expected; in addition, does not cause a problem of producing a large amount of waste that causes environmental pollution; and has simple treatment steps comprising the oxidation step and the magnetic separation step, so that the cost for the apparatus can be reduced.
ITO SATOSHI
Mizuno Akinori
Hideo Shimizu
Yuichi Takagi
Kazuki Hidaka
Tomoko Watanabe