遊星ミルによるカルシウム・フェライトのメカノケミカル合成とその溶銑からの脱燐特性

概要

論文の詳細を見る
Room temperature grinding of a mixture of CaO and Fe2O3 (hematite) was conducted using a planetary ball mill to synthesize calcium ferrite (CaFe2O4 ; CF). It is found that poor crystalline CF phase can be crystallized mechanochemically in the mixture by the grinding for about 2 hours, and its crystallinity is improved in the prolonged grinding. Heat treatment of the short time ground mixture, in which the CF phase is not formed yet, at about 900 〜 1, 200 K enables to assist the crystallization of CF. Dephosphorization from molten iron was examined at 1, 573 〜 1, 595 K using three kinds of fluxes with and without the CF powder prepared by the grinding for 5 hours. The flux containing the CF powder shows effective dephosphorization characteristics, however, substituion of all components of CaF2 and Fe2O3 for the CF powder is ineffective for the Dephosphorization.
社団法人資源・素材学会の論文
1999-09-25