钢铁钒钛2025，Vol.46Issue(1)：25-33,9.DOI:10.7513/j.issn.1004-7638.2025.01.004
石煤钒矿常压湿法清洁提取五氧化二钒工艺研究
Study on the clean extraction process of vanadium pentoxide from vanadium ore of stone coal by atmospheric pressure wet method
摘要
Abstract
In view of the increasing environmental protection and energy saving requirements of vana-dium extraction from stone coal year by year,a clean process for V2O5 extraction by atmospheric pres-sure wet method including water leaching,extraction separation,vanadium precipitation and calcina-tion was developed.A stone coal mine in Yueyang,Hunan Province was used as raw materials in this paper.Using insulated humidity-concentrated H2SO4 maturation leaching treatment,and also investig-ated the whole process of extraction,back-extraction and product preparation.The test results show that the vanadium leaching rate can reach 87.8％under the following conditions:98.3％of mineral size un-der 100 μm,10％of water mixing,18％of acid dosage,maturation temperature of 120 ℃,maturation time of 8 h,water leaching liquid-solid ratio of 2:1 and stirring leaching for 2 h at room temperature.With P204 extraction,the vanadium extraction rate was 98％after 5 single-stage extraction at pH=2.2,and the back-extraction rate of 4 stages could reach more than 99％.At the pH of 1.0 for vanadium pre-cipitation and then multi-vanadate was calcined at 600 ℃ for 2 h,required V2O5 product met the re-quirements of national standards.关键词
五氧化二钒/石煤钒矿/清洁提取/湿法/常压/浸出率Key words
vanadium pentoxide/coal mine/clean extraction/wet process/atmospheric pressure/leach-ing rate分类
矿业与冶金引用本文复制引用
万洪强,李静,田洪庆,罗豪,张丽芬,田子瑜..石煤钒矿常压湿法清洁提取五氧化二钒工艺研究[J].钢铁钒钛,2025,46(1):25-33,9.基金项目
国家重点研发计划项目(2020YFC1909705). （2020YFC1909705）
