Reduction of Titanium Oxides in Molten CaO-CaCl2

摘要：

OS process to reduce TiO2 was studied At the initial stage of TiO2 reduction,CaTiO3 is formed by thermochemical reaction between TiO2 and CaO and delays reduction. At the later stage, the volume of particle grows up 10000 times larger than that of TiO2 ,and the slow oxygen diffusion in a long distance delays the deoxidation. In the case of reduction of CaTiO3,current efficiency was very high at the initial stage,and became low at the later stage, because α-Ti was formed. In case of reduction of TiO,dense Ti layer covered the surface of TiO and it blocked inward diffusion of Ca and the outward diffusion of oxygen. The thick Ti layer on the unreacted particles delays the deoxidation and its rate depends on oxygen diffusion in this layer.

关键词： Molten salt calcium titanate (CaTiO3) particle size oxygen diffusion

作者: Naoto Kobayashi

作者单位: Faculty of Engineering,Hokkaido University,Kita 13,NishiS,Kita-ku,Sapporo,Hokkaido 060-8628 Japan

会议类型: 国际会议

会议名称: The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)

会议地点: 北京

会议语种:英文

页码: 84-86

在线出版日期: 2011-06-19（万方平台首次上网日期，不代表论文的发表时间）