Preparation and Characterization of High Titanium Ferrous with Low Oxygen Content by Enhanced Reduction-SHS

摘要

Rutile.ilmenite and Al-Ca complex reducer were used to prepare high titanium ferrous alloy by enhanced reduction-SHS method. The thermody-namic of the relative reactions was studied. The effects of the composition of complex Al-Ca reducer on the enhanced reduction-SHS process were investigated and the high titanium ferrous alloys were characterized by XRD,SEM. The results indicate that the adiabatic temperatures of the Ca reducing reaction systems are higher than 1800K so all the reactions can keep on carrying on by-self. The adiabatic temperatures and reaction heat effects of the Ca reducing reaction systems are higher than those of the Al Ca reducing reaction systems, so there are more fully reaction conditions during the reducing reaction process by Al-Ca complex reducer. The high titanium ferrous alloys consist mainly of TiFe2, AlTi3 and oxide inclusions. The oxide inclusions exist in the alloy which results directly in the high oxygen content and micro-structural defects. The lowest oxygen content in the alloy is lower than 1. 0% which is removed effectively.