Wang Shuyi, Jin Yingjie, Chu Jinglong, Qi Tao. Study on Preparation of TiO2 Pigment with Sub-molten Salt Process from Titanium-bearing Slag Obtained in Direct-reduction Ironmaking[J]. IRON STEEL VANADIUM TITANIUM, 2013, 34(3): 19-23. doi: 10.7513/j.issn.1004-7638.2013.03.004
Citation:
Wang Shuyi, Jin Yingjie, Chu Jinglong, Qi Tao. Study on Preparation of TiO2 Pigment with Sub-molten Salt Process from Titanium-bearing Slag Obtained in Direct-reduction Ironmaking[J]. IRON STEEL VANADIUM TITANIUM, 2013, 34(3): 19-23. doi: 10.7513/j.issn.1004-7638.2013.03.004
Wang Shuyi, Jin Yingjie, Chu Jinglong, Qi Tao. Study on Preparation of TiO2 Pigment with Sub-molten Salt Process from Titanium-bearing Slag Obtained in Direct-reduction Ironmaking[J]. IRON STEEL VANADIUM TITANIUM, 2013, 34(3): 19-23. doi: 10.7513/j.issn.1004-7638.2013.03.004
Citation:
Wang Shuyi, Jin Yingjie, Chu Jinglong, Qi Tao. Study on Preparation of TiO2 Pigment with Sub-molten Salt Process from Titanium-bearing Slag Obtained in Direct-reduction Ironmaking[J]. IRON STEEL VANADIUM TITANIUM, 2013, 34(3): 19-23. doi: 10.7513/j.issn.1004-7638.2013.03.004
1. Key Laboratory of Green Process and Engineering, National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, CAS, Beijing 100190, China;
2. University of Chinese Academy of Science, Beijing 100049, China
Received Date: 2012-12-10 Available Online:
2023-12-04
Using titaniferous slag from the process of ‘coal-based direct reduction in rotary hearth furnace-further reduction and smelting and separation in electric furnace’ as raw material,TiO2 Pigment with a content of titanium dioxide over 98% was produced by sub-molten salt process.The optimum testing conditions for the production were studied,aiming to find out the optimum reaction time,alkaline ratio,reaction temperature,and granularity of the raw material.After multistage solid-state ion exchange and removal of impurities,titaniferous solution(CTiO2=180 g/L,effective acid coefficient F=2.0) was prepared from the intermediate product sodium metatitantate.Through hydrolysis,metatitanic acid with a particle size of D(0.5)=1.2 μm was obtained,and then it could be calcined to anatase TiO2 products.
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