| Abstract: | Five phases were determined by means of quantitative EPMA, SEM, X-ray diffraction, etc. in the high Ti-slag with high Mg and Ca contents, smelted by 6000 kVA electric furnace. The principal phase is the anosovite solid solution of Ti_3O_5 type in amount of 87.06% of the slag. Along the grain interfaces of the solid solution phase, CaO concentrated mainly in the form of 2CaO·TiO_2. This is the phase area so called the crystal phase enriched Ca and Mg. Most MgO is collected in the glass phase which is about 10.90% of the slag. Other two minor phases are found to be Ti-Fe alloy and metallic Fe. Thus, the calculated structural formula of such an anosovite in the slag seems to be: 0.15(Mg_(0.27)Ti_(0.73))0.2TiO_2]·0.85Ti_2O_3·TiO_2] |
