中南大学学报（自然科学版）2025，Vol.56Issue(2)：458-467,10.DOI:10.11817/j.issn.1672-7207.2025.02.005
微波强化改性钛精矿硫酸浸出研究
Study on sulfuric acid leaching of titanium concentrate modified by microwave enhancement
摘要
Abstract
Aiming at the problems of large amount of waste acid,high energy consumption and serious environmental pollution in the process of titanium extraction by sulfuric acid method,microwave leaching and conventional leaching of titanium concentrate were carried out based on sodium hydroxide modification.The optimal leaching conditions were studied and the surface morphology and phase composition of leaching residue were analyzed.The results show that FeTiO3 is transformed into NaFeTiO4 and Na2Fe2Ti3O10 with stronger activity after roasting and washing.Under the conditions of microwave power 600 W,sulfuric acid mass fraction 50％,liquid-solid ratio 6꞉1,leaching temperature 80℃and leaching time 120 min,the leaching rates of microwave heating and conventional heating are 95.57％and 89.11％,respectively.The microwave heating reduces the adsorption of titanium by silica gel,and the specific surface area of the leaching residue increases under the action of microwave.The microwave leaching process can realize the efficient leaching of titanium under low acid conditions,which provides a new idea for the efficient application of titanium concentrate.关键词
微波/改性钛精矿/浸出/焙烧Key words
microwave/modified titanium concentrate/leaching/roasting分类
矿业与冶金引用本文复制引用
安云飞,金钰皓,丁杰,刘秉国,胡途,宇文超,陈旺,龚斯宇,嵇广雄,侯恪人,杨振兴..微波强化改性钛精矿硫酸浸出研究[J].中南大学学报（自然科学版）,2025,56(2):458-467,10.基金项目
云南省基础研究专项重点项目(202101AS070014) （202101AS070014）
云南省绿色铝硅钛材料重大专项(202202AG050007)(Project(202101AS070014)supported by the Special Key Project For Basic Research of Yunnan Province （202202AG050007）
Project(202202AG050007)supported by the Green Aluminum Silicon Titanium Material Major Project of Yunnan Province) （202202AG050007）
