Chinese Journal of Rare Metals. 2014, (05) Core

Research Progress in Production Technology of TitaniumChinese Full Text

Wang Zhen;Li Jian;Hua Yixin;Zhang Zhi;Zhang Yuan;Ke Pingchao;Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology;State Key Laboratory Breeding Base of Complex Nonferrous Metal Resources Cleaning Utilization in Yunnan Province;

Abstract: The production technology of titanium was summarized systematically. The production methods of titanium were divided into two categories according to the different process conditions and materials containing titanium. One was thermal reduction process; the other one was molten salt electrolysis process. Thermal reduction process included Kroll process,Hunter process,Armstrong process,EMR process using TiCl4 as raw materials; OS process,PRP process,and MHR process used TiO2 as raw materials; and titanate thermal reduction process used titanate as raw materials,etc. Reducing agent was mainly adopted by the liquid or gaseous state of active metal magnesium,calcium,sodium,and their hydride,etc. Molten salt electrolysis process included TiCl4 molten salt electrolysis process,titanate molten salt electrolysis process and the molten salt electrolysis process using TiO2,TiO·mTiC or titanium slag as raw materials,such as FFC Cambridge process,MER process,USTB process,QIT process,SOM process and ionic liquid electrolysis process,etc. The electrolytes were mainly NaCl,KCl,CaCl2 and their mixtures,etc. Currently,only Kroll and Hunter methods real-ized industrial production,while other thermal reduction processes were still in the stage of laboratory research and development,because the product could not meet the requirements or they could not achieve continuous production. FFC Cambridge process directly used TiO2 as a raw material for molten salt electrolysis,eliminating the TiCl4 production steps,cutting down the extraction process of titanium and reducing the energy consumption and cost,which was successfully carried out kilogram expanded experiment; the ionic liquid electrolytic process reduced the temperature from hundreds centigrade to near room temperature in molten salt. Because of its low reduction rate and current efficiency,the method should also be further researched. As a result,the molten salt electrolysis method might replace thermal reduction process,and it became a future development direction of preparing titanium and developed from high to low temperature.

Keywords：

titanium; thermal reduction; molten salt electrolysis;

DOI：
10.13373/j.cnki.cjrm.2014.05.026
Series：
Subject：
Classification Code：
TF823

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Research Progress in Production Technology of TitaniumChinese Full Text

Wang Zhen;Li Jian;Hua Yixin;Zhang Zhi;Zhang Yuan;Ke Pingchao;Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology;State Key Laboratory Breeding Base of Complex Nonferrous Metal Resources Cleaning Utilization in Yunnan Province;

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