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1584615 
Journal Article 
Preparation of titanium powders by calciothermic reduction of titanium dioxide 
Wan He-li; Xu Bao-qiang; Dai Yong-nian; Yang Bin; Liu Da-chun; Sen Wei 
2012 
19 
9 
2434-2439 
WOS:000308549900006 
To develop an effective process for titanium powders
production, a calciothermic reduction process of pigment titanium dioxide (w(TiO2)> 98%), based
on the preform reduction process (PRP), was investigated by means of XRD, SEM and EDS. In this
process, the mixture of TiO2 powder and CaCl2 was pressed into pieces as feed preform and was
reduced by calcium vapor. Titanium powders was recovered after leaching from the reduced preform
with hydrochloric acid and deionized water. The results indicate when the mass ratio of CaCl2 to
TiO2 is about 1:4 and at a constant temperature of 1 273 K for 6 h in vacuum furnace, titanium
powders with 99.55% purity by EDS analysis and irregular shape (8-15 mu m in particle size) are
obtained. 
titanium powders; titanium dioxide; calciothermic reduction; calcium chloride