摘要
借助于差重分析法,测定了钛磁铁矿在700～1100℃氢还原动力学。试验结果表明,钛磁铁矿球—氢还原初期受化学团扩散混合控制;后期受气体通过产物铁层的扩散控制。
In this paper the reduction of titaniferous magnetite concentrate pellets in hydrogen has been studied at 700～1100℃ by gravimetric measurement, and both completely and partially reduced pellets were examined by optical microscope. The results of the optical microscopy observation show that the reaction interface between reduced iron layer and unreduced iron oxide layer is not obvious, which indicates that there is a sufficient gas diffusion in the unreduced layer and some internal reduction occurs ahead of ...
出处
《有色金属》
CSCD
1992年第2期59-63,共5页
Nonferrous Metals
关键词
钛磁铁矿
氢还原
动力学
titaniferous magnetite hydrogen reduction kinetics
