<Original Papers>Studies on the Recovery of Titanium from the Slag in the Smelting Titaniferous Iron Sand.(I) : Concentrability of the Slag

Microscopic examination of the slag reveals its principal components to be ilmenite, perovskite and pyroxene group. Magnetic separation of the air cooled slag shows that about 25% can be separated at 200 to 2600 Oerstead. TiO_2 contained in this portion is about 27% and recovery of TiO_2 is about 30%. At 1400 to 2600 Oerstead the portion separated is highest in any grain size, and TiO_2 content is found to be highest at 3000 to 4000 Oerstead. If the slags are melted and cooled gradually from 1350℃ to room temperature at 30℃/hr, there appear the segregation and the grain growth. TiO_2 content in the heat-treated slags, when separated at 200 to 1400 Oerstead, is highest, and about 47 to 50%