高镁、钙的高钛渣经查明有5个相。高钙、镁富集区结晶相化合物为2CaO·TiO_2,玻璃相中富集MgO。黑钛石固溶体含MgO很低,只占渣中MgO总量的11.65％,MgTi_2O_5/Ti_3O_5的分子比为1∶24。导出了渣中黑钛石的分子式为0.15[(Mg_(0.27)Ti_(0.73))0.2TiO_2]·0.85[Ti_2O_3·TiO_2]。
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]·0.85[Ti_2O_3·TiO_2]
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