転炉滓の鉱物学的基礎研究

概要

論文の詳細を見る
Mineralogical study of LD converter slags was carried out by means of microscopic, EPMA and X-ray examinations and three crystalline phases, namely (i) dicalcium silicate (ii) dicalcium ferrite (iii) spinel phase or 'FeO' solid solution were identified. Phosphorus was found to exist only in the solid solution of 2CaO・SiO_2. The rapidly and slowly cooled synthetic slags of CaO-SiO_2-FeO_x system containing 5wt% P_2O_5 were also studied by the same method. The slag compositions with different primary phase area chosen in order to obseve the phosphorus-enriched phase. The results of the CaO-SiO_2-Fe_2O_3 system indicate that silico-carnotite [5CaO・SiO_2・P_2O_5] was formed and it changed to the fluorapatite [Ca_5F(PO_4)_3] when 5 wt% of CaF_2 was added. On the other hand, in the system CaO-SiO_2-'FeO', silico-carnotite was formed only in the Ca_2SiO_4 primary phase area.
社団法人日本鉄鋼協会の論文
1977-07-01