高温素材プロセッシング

[1101] Magnetite precipitation behaviors concerned with molten oxidation of copper slag

^〇樊涌¹, 柴田悦郎², 飯塚淳², 中村崇² (1.東北大学大学院環境科学研究科, 2.東北大学多元物質科学研究所)

司会: 月橋文孝 (東京大学)

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

Molten oxidation process was considered to be a more suitable approach for recovering of iron value with crushing magnetic separation followed. Iron oxides could be precipitated from the molten iron silicate during oxidation while magnetite was preferred because of its intensive ferromagnetism and large crystal size. In the present study, oxygen partial pressure was considered to affect to the growth of iron oxides and it was implemented to find the favorable condition for the growth of magnetite and restrain of hematite.