| 摘要 |
PCT No. PCT/FR96/00658 Sec. 371 Date Jan. 20, 1998 Sec. 102(e) Date Jan. 20, 1998 PCT Filed Apr. 30, 1996 PCT Pub. No. WO96/34692 PCT Pub. Date Nov. 7, 1996A method for purifying iron carbide begins by feeding ore to a reaction chamber. A mixture of iron, iron oxides, gangue, and iron carbides is extracted from the reaction chamber. The temperature of the mixture is then adjusted to a range of 400 DEG -500 DEG C. The mixture, at the adjusted temperature, is subjecting to a first magnetic field for separating the mixture into a magnetic fraction including iron and iron oxides from a non-magnetic fraction including gangue and iron carbides. This is followed by a cooling of the non-magnetic fraction of gangue and iron carbides below the Curie temperature of iron carbide. The gangue and iron carbides are subjecting to a second magnetic field for separating the iron carbides, that become magnetic, from the gangue that remains non-magnetic. |
