沸腾氯化用高品质金红石的生产工艺-中国有色金属学报.PDF

20 1 2010 10 Vol.20 Special 1 The Chinese Journal of Nonferrous Metals Oct. 2010 1004-0609(2010)S1-s0981-05 ( 410012) 3 3 3 TiO 2 3 TiO 2 — TiO TiO ( ) 92.96% CaO+MgO 0.30% 100 µm 94% 2 2 TF111 A Producing process of high quality synthetic rutile for fluidizing chlorination XIONG Xue-liang, YANG Zhi, OUYANG Hong-yong, WANG Kang-hai (Research Institute of Mineral Resource Development Technology, Changsha Research Institute of Mining and Metallurgy, Changsha 410012,China) Abstract: Three samples i.e. ilmenite, oxidation-modified ilmenite and reduction-modified ilmenite were leached by agitation leaching, pressure leaching and fluidization leaching. The results show that descending order of TiO2 content of products is oxidation-modified ilmenite, reduction-modified ilmenite and ilmenite when three samples are leached by agitation leaching. The maximum TiO2 content of product is obtained by fluidization leaching. The second is obtained by pressure leaching, and the minimum is obtained by agitation leaching. A new rutile phase appears on the surface of mineral by oxidation treating. The synthetic rutile produced from ilmenite by oxidation and fluidization acid leaching has characteristics as rutile-type titanium(IV) dioxide, with TiO2 content of 92.96%, CaO and MgO total content of 0.30%, 94% particle with size b