1. Stanaway K. Overview of titanium dioxide feedstocks. Min Eng. 1994;46(12):1367.
2. Hou QL, Duan HT, Yang S, Liu YJ, Chen JH. Process of rutile titanium dioxide coated with ZrO2. Chin J Rare Met. 2013;37(3):411.
3. Lynd LE, Lefond S. Industrial Minerals and Rocks: Nonmetallics Other Than Fuels, Maryland: American Institute of Mining, Metallurgical, and Petroleum Engineers. 1975. 84.
4. Zhu YS, Zhu, JG. The Chemical Principle of Flotation Reagents. Changsha: Central South University of Technology Press; 1987. 138.
5. Ma G. Studies on the flotation of fine and ultrafine metamorphic rutile ore. Nonferrous Met. 1989;3:12.