2Zhang WS, Zhu ZW, Cheng CY. A literature review of titaniummetallurgical processes [ J ]. Hydromentallurgy, 2011, 108 (3): 177 -188.
3Akhgar BN, Pazouki M, Ranibar M, et al. Preparetion of nanos- ized synthetic futile from ilmenite concentrate [ J ]. Minerals Engi- neering, 2010, 23 (7): 587-589.
4Tian CX, Du JQ, Chen XH, et al. Influence of hydrolysis in sulfate process on titania pigment producing [ J ]. Transactions of Nonferrous Metals Society of China, 2009, 19 (3) : 829 -833.