Quick Search:       Advanced Search
姚永林,王元阳,李宁,贾雹雹,王耀耀.低温镁热还原TiO2制备金属钛粉的热力学研究[J].稀有金属材料与工程(英文),2018,47(12):3795~3799.[Yao Yonglin,Wang Yuanyang,Li Ning,Jia Baobao and Wang Yaoyao.Thermodynamics research of titanium powder preparation by a low temperature magnesiothermic reduction of TiO2[J].Rare Metal Materials and Engineering,2018,47(12):3795~3799.]
Thermodynamics research of titanium powder preparation by a low temperature magnesiothermic reduction of TiO2
Download Pdf  View/Add Comment  Download reader
Received:March 27, 2017  Revised:June 05, 2017
DOI:
Key words: Titanium  magnesiothermic reduction  oxygen content  adiabatic temperature  thermodynamics
Foundation item:国家自然科学基金资助(项目号51604005)
Author NameAffiliation
Yao Yonglin,Wang Yuanyang,Li Ning,Jia Baobao and Wang Yaoyao  
Hits: 25
Download times: 0
Abstract:
      The thermodynamics of magnesiothermic reduction of TiO2 was studied in order to decrease the oxygen content in reduction product. The Gibbs free energy and adiabatic temperature of reaction system were calculated, and the reaction predominance diagram was drawn. The results show that TiO cannot be reduced by magnesium when the reaction temperature is higher than 1681 K. In order to solve this problem, we put forward a new concept to restrain the reaction temperature by adding diluents. The adiabatic temperatures were calculated at different NaCl, MgCl2 addition amount and initial temperatures, and the thermodynamic condition for complete reduction of titanium oxide was pointed out. Finally, the experiments were carried out by using NaCl and NaCl-MgCl2 eutectic salt as diluents, and the titanium oxide was reduced completely.