Effect of the Formation of CNTs on the Reduction of Ilmenite  

作　　者：王升高 徐卫国 

机构地区：[1]Provincial Key Laboratory of Plasma Chemistry and Advanced Materials,Wuhan Institute of Technology [2]Department of Orthopaedics,Tongji Hospital Affiliated to Tongji Medical College,Huazhong University of Science and Technology

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2012年第5期948-951,共4页武汉理工大学学报（材料科学英文版）

基　　金：National Natural Science Foundation of China(No.51072140);the Program for Excellent Youth Team and the Scientific Research Foundation of the Higher Education Commission of Hubei Province of China(Nos.Z200715001 and T201004);the Program for Excellent Subject Leader of Wuhan(No.201150530151)

摘　　要：The reduction process of ilmenite by hydrogen and methane under MPCVD was analyzed by XRD result. The reduction degree of ilmenite increased with adding methane, the case similar to reduction rate. The mechanism of reduction process changed with the increasement of methane flow because of the formation of carbon nanotubes （CNTs）. The morphology of reduced samples was observed by SEM, and it was found that CNTs played an important role in the fracture of ilmenite particles. The reduction kinetics showed that the reduction was rate-controlling for hydrogen, and diffusion-controlling when hydrogen mixed with high flow methane.The reduction process of ilmenite by hydrogen and methane under MPCVD was analyzed by XRD result. The reduction degree of ilmenite increased with adding methane, the case similar to reduction rate. The mechanism of reduction process changed with the increasement of methane flow because of the formation of carbon nanotubes （CNTs）. The morphology of reduced samples was observed by SEM, and it was found that CNTs played an important role in the fracture of ilmenite particles. The reduction kinetics showed that the reduction was rate-controlling for hydrogen, and diffusion-controlling when hydrogen mixed with high flow methane.

关 键 词：ilmenite microwave plasma carbon nanotube reduction 

分 类 号：TB383.1[一般工业技术—材料科学与工程]