Method for preparing titanium chloride slag from titanium concentrate

• Main Authors: PENG ZHONGHUI, GAO YANG, YAN GUANGYING, ZHAO JIANGWEI, HE GAOFENG, DOU JUN, CHEN SHUZHONG, CHEN JIANLI, LI ZHENZHEN, WANG DONGHUA
• Format: Patent
• Language: Chinese; English
• Published: 25.02.2022
• Subjects: CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; INORGANIC CHEMISTRY; METALLURGY

The invention provides a method for preparing titanium chloride slag from titanium concentrate, and relates to the technical field of chemical metallurgy. The method mainly comprises the following steps: carrying out magnetizing roasting, ball milling, wet magnetic separation, granulation and smelting to obtain furnace slag, and sequentially carrying out oxidizing roasting, reducing roasting, pressure acid leaching and calcining on the furnace slag to obtain the titanium chloride slag. According to the method, magnetizing roasting, desilicication and decalcification and titanium chloride slag upgrading technologies are combined, and a low-calcium-magnesium and high-grade titanium chloride slag product suitable for large-scale fluidizing chlorination is prepared. According to the method, the content of impurities (especially calcium and magnesium) in the titanium chloride slag prepared from the titanium concentrate can be effectively reduced, the titanium chloride slag with the purity being 90% or above is pre