钛铁矿碳热还原产物的研究.pdf

Research on the reducing product of carbonthermal reduction of ilmenite ores# ** Song Zengkai, Chen Guo, Chen Jin, Peng Jinhui (Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, KunMing 650093) Abstract: In this present study, the reducing products of carbonthermal reduction of ilmenite ores were evaluated. The crystal structures, microstructure and surface chemical functional groups of the ilmenite ores and the reducing product of carbonthermal reduction were also analyzed using XRD, SEM, Raman and FT-IR, respectively. Sulphate titanium slag and high titanium slag were the major reducing products of carbonthermal reduction of ilmenite ores. It was found that the low-valent titanium of high titanium slag was increased after carbonthermal reduction of ilmenite ores with higher temperature and longer processing time. Based on the results, this method could be applied effectively and efficiently way for both utilization of ilmenite ores and preparation of sulphate titanium slag and high titanium slag. Keywords: Ilmenite ores; Sulphate titanium slag; High titanium slag; Carbonthermal reduction 0 Introduction Ilmenite is one of the interesting mineral of the metal titanium, and is mined as an economically important industrial mineral ores in several deposits in various locations worldwide, which many of them are in placer sands [1-5]. Over 90% of world of ilmenite ores are used in the manufacture of titanium pigment, titanium sponge and titaniu