钒页岩全湿法绿色提取技术  

Green extraction technology of vanadium-bearing shale via whole hydrometallurgical process

作　　者：张一敏[1,2,3,4] 薛楠楠 刘涛[1,2,3] 黄晶 ZHANG Yimin;XUE Nannan;LIU Tao;HUANG Jing(School of Resource and Environmental Engineering,Wuhan University of Science and Technology,Wuhan,Hubei 430081,China;State Environmental Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control,Wuhan,Hubei 430081,China;Collaborative Innovation Center of Strategic Vanadium Resources Utilization,Wuhan,Hubei 430081,China;School of Resource and Environmental Engineering,Wuhan University of Technology,Wuhan,Hubei 430081,China)

机构地区：[1]武汉科技大学资源与环境工程学院,湖北武汉430081 [2]国家环境保护矿冶资源利用与污染控制重点实验室,湖北武汉430081 [3]战略钒资源利用省部共建协同创新中心,湖北武汉430081 [4]武汉理工大学资源与环境工程学院,湖北武汉430081

出　　处：《中国矿业大学学报》2022年第3期520-531,共12页Journal of China University of Mining & Technology

基　　金：国家重点研发计划项目(2020YFC1909700)。

摘　　要：我国页岩钒行业正面临技术转型与环境协调发展的双重挑战.本文系统研究了钒矿物晶格驰豫释钒行为及钒原子在矿物晶格和溶液环境中的配位转化规律,揭示了含钒矿物表面调整活化增溶、单金属协萃分离、氢还原无铵沉钒等核心机制,在总结多年工程转化经验的基础上,提出了新一代钒页岩全湿法绿色提取技术.结果表明:钒浸出率显著提升至90%以上,硫酸用量降低至180~240 kg/t矿石,钒产品纯度≥99.8%.研究成果解决了我国钒页岩的清洁生产关键问题,对当前行业低碳、清洁、高效生产主流发展和保障我国在这一领域的领先地位起到了积极作用.At present,the shale-hosted vanadium industry is facing double challenges from technical transformation and harmonious development of environment.In the paper,the vanadium releasing behavior caused by minerals lattice relaxion and its species change from mineral lattice to aqueous solution were systematically studied while the core mechanisms on surface-adjusted activating solubilization of vanadium-bearing minerals,synergistic extraction of vanadium ions and its non-ammonia hydrogen reductive precipitation have been also revealed.Basing on years of engineered transformation experiences,the next-generation green whole-hydrometallurgical extraction technology of vanadium-bearing shale was proposed by the authors.The results show that the vanadium leaching efficiency achieves over 90%and the sulfuric acid consumption significantly reduces to 180-240 kg/t ore,as well as vanadium product purity of more than 99.8%.The research work can get about solving the key issues on clean production of vanadium-bearing shale and will benefit the mainstream development of low-carbon,clean and high-efficient production in vanadium industry and guarantee the leading position of China in this field.

关 键 词：钒页岩 云母晶格弛豫 全湿法提取 绿色工艺 

分 类 号：TD952[矿业工程—选矿]