高温素材プロセッシング

[3805] Magnetite precipitation in copper slag for iron resources recovery by molten oxidation

^○ファンヨン¹, 柴田悦郎¹, 飯塚淳¹, 中村崇¹ (1.東北大学)

司会:夏井俊悟(北海道大学)

Keywords:slag crystallization, copper slag, magnetite precipitation, molten oxidation

Molten oxidation process was studied for recovering of iron value with crushing magnetic selection followed. Magnetite precipitation was preferred because of its intensive ferromagnetism and large crystal size. From previous mill-gram scale experiments, magnetite could be precipitated from the molten iron silicates during molten oxidation, while hematite was restrained at the atmosphere of 1 vol% of oxygen. In the present study, gram scale experiments was implemented by an electric furnace to verify the crystallization behaviors for an amplified experiment of molten oxidation at 1 vol% of oxygen for subsequent magnetic separation.