Synthesis of TiCl_(2) powders through reactive gas phase infiltration in a fluidized bed reactor  

作　　者：Miao Song Yafeng Yang Hongdan Zhao Maoqiao Xiang Qingshan Zhu Jibin Jia Chaoquan Hu Fen Yue 

机构地区：[1]State Key Laboratory of Multiphase Complex Systems,Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China [2]School of Chemical Engineering,University of Chinese Academy of Sciences,Beijing 100049,China [3]Innovation Academy for Green Manufacture,Chinese Academy of Sciences,Beijing 100190,China [4]Nanjing IPE Institute of Green Manufacturing Industry,Nanjing 211135,China

出　　处：《Particuology》2021年第4期95-103,共9页颗粒学报（英文版）

基　　金：This work was financially supported by the National Natural Science Foundation of China(21736010,11805227);the Bureau of Frontier Sciences and Education,Chinese Academy of Sciences(ZDBS-LY-JSC041);the Key Research Program of Nanjing IPE Institute of Green Manufacturing Industry(E0010708);the Innovation Academy for Green Manufacture,Chinese Academy of Sciences(IAGM-2019-A11).

摘　　要：TiCl_(2) is a promising precursor for producing metallic titanium alloys and titanium-based ceramics.However,the effective synthesis of high-quality TiCl_(2) powder remains challenging.Herein,a fluidized bed reactor(FBR)providing a high gas-solid contact area was employed to synthesize TiCl_(2) powder using a reliable TiCl_(4)-Ti reaction system.Optimal reaction conditions(600℃and 120 min)were determined for the proposed Ti-TiCl_(4) system by kinetic investigation.A dense Ti layer was regenerated upon the original surface of the Ti powder as a result of TiCl_(2) disproportionation at high temperature(above 700℃),which impeded infiltration by gaseous TiCl_(4).The particle size of the Ti reducing agent played a vital role in the production of TiCl_(2) powder.A mean particle size of 24.5μm was confirmed to be the most feasible option based on the optimal chlorinated depth(17μm).

关 键 词：Titanium dichloride FLUIDIZATION Kinetics Analysis 

分 类 号：TF12[冶金工程—粉末冶金]