Pressure leaching of converter vanadium slag with waste titanium dioxide  

作　　者：Guo-Quan Zhang Ting-An Zhang Ying Zhang Guo-Zhi Lv Yan Liu Zhuo-Lin Liu 

机构地区：[1]Key Laboratory of Ecological Utilization of Multi-Metal Intergrown Ores of Ministry of Education,School of Materials and Metallurgy,Northeastern University

出　　处：《Rare Metals》2016年第7期576-580,共5页稀有金属（英文版）

基　　金：financially supported by the Chinese National Programs for High Technology Research and Development(Nos.2010AA03A405 and 2012AA062303);the National Natural Science Foundation of China(Nos.U1202274,51004033,51204040,and 50974035);the National Science and Technology Support Program(No.2012BAE01B02);the Fundamental Research Funds for the Central Universities(No.N100302005);the Doctoral Fund Project(No.20120042110011)

摘　　要：The process of pressure leaching the converter vanadium slag with waste titanium dioxide without roasting was studied. Mineralogy analysis indicates that the con- verter vanadium slag contains mainly three mineral phases： magnetite, titanium magnetite, and silicate phase. Vana- dium is in combination with iron, titanium, manganese, aluminum, and silicon. The impacts of leaching tempera- ture, leaching time, stirring speed, liquid-to-solid ratio, and initial leaching agent concentration were investigated on the waste titanium dioxide leaching process. The results indi- cate 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 sili- cate phase, and the residues can be reused as the extraction of titanium raw materials for titanium dioxide production technology by the sulfate method.The process of pressure leaching the converter vanadium slag with waste titanium dioxide without roasting was studied. Mineralogy analysis indicates that the con- verter vanadium slag contains mainly three mineral phases： magnetite, titanium magnetite, and silicate phase. Vana- dium is in combination with iron, titanium, manganese, aluminum, and silicon. The impacts of leaching tempera- ture, leaching time, stirring speed, liquid-to-solid ratio, and initial leaching agent concentration were investigated on the waste titanium dioxide leaching process. The results indi- cate 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 sili- cate phase, and the residues can be reused as the extraction of titanium raw materials for titanium dioxide production technology by the sulfate method.

关 键 词：VANADIUM Waste titanium dioxide Pressure leaching Resource utilization 

分 类 号：X758[环境科学与工程—环境工程] TQ621.12[化学工程—精细化工]