Pressure leaching of converter vanadium slag with waste titanium dioxide
来源期刊：Rare Metals2016年第7期
论文作者：Guo-Quan Zhang Ting-An Zhang Ying Zhang Guo-Zhi Lv Yan Liu Zhuo-Lin Liu
文章页码：576 - 580
摘 要：The process of pressure leaching the converter vanadium slag with waste titanium dioxide without roasting was studied. Mineralogy analysis indicates that the converter vanadium slag contains mainly three mineral phases:magnetite, titanium magnetite, and silicate phase. Vanadium is in combination with iron, titanium, manganese,aluminum, and silicon. The impacts of leaching temperature, leaching time, stirring speed, liquid-to-solid ratio, and initial leaching agent concentration were investigated on the waste titanium dioxide leaching process. The results indicate that under the optimal conditions, the vanadium and the iron leaching rates are 96.85 % and 93.50 %, respectively,and the content of titanium is 12.6 % in the residue. The main mineral phases for the residues under the optimal operation conditions are quartz, ilmenite, anatase, and silicate phase, and the residues can be reused as the extraction of titanium raw materials for titanium dioxide production technology by the sulfate method.
Guo-Quan Zhang，Ting-An Zhang，Ying Zhang，Guo-Zhi Lv，Yan Liu，Zhuo-Lin Liu
Key Laboratory of Ecological Utilization of Multi-Metal Intergrown Ores of Ministry of Education,School of Materials and Metallurgy,Northeastern University
摘 要：The process of pressure leaching the converter vanadium slag with waste titanium dioxide without roasting was studied. Mineralogy analysis indicates that the converter vanadium slag contains mainly three mineral phases:magnetite, titanium magnetite, and silicate phase. Vanadium is in combination with iron, titanium, manganese,aluminum, and silicon. The impacts of leaching temperature, leaching time, stirring speed, liquid-to-solid ratio, and initial leaching agent concentration were investigated on the waste titanium dioxide leaching process. The results indicate that under the optimal conditions, the vanadium and the iron leaching rates are 96.85 % and 93.50 %, respectively,and the content of titanium is 12.6 % in the residue. The main mineral phases for the residues under the optimal operation conditions are quartz, ilmenite, anatase, and silicate phase, and the residues can be reused as the extraction of titanium raw materials for titanium dioxide production technology by the sulfate method.
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