摘要
我国尾矿年产量大,目前尾矿的处理方式主要有矿山回填、有价金属回收等,但难以实现尾矿的完全利用。尾矿中含有的大量石英、长石、碳酸盐矿物、硅酸盐矿物和黏土矿物等成分使其具有稳定性好、比面积大、孔隙结构丰富的特点。固-液相变材料(固-液PCMs)潜热大,但相变过程中转变为液相时易发生泄露。利用尾矿来负载固-液PCMs,既能解决其泄露问题,又能为尾矿的资源化利用提供新的途径,减轻生态环境的负担。针对尾矿资源化利用,综述了尾矿的类型及理化特性,尾矿基相变材料的封装制备、热性能提升以及应用。最后,阐述了当前尾矿制备相变材料存在的不足以及对未来研究的展望,以期为相关研究提供参考,促进尾矿在相变储热领域资源化利用的研究。
Mining industry produces a large amount of tailings annually in China.Currently,the treatment of tailings mainly includes mine backfill and valuable metal recovery.Which is difficult to realize the full utilization of tailings.The tailings contain quartz,feldspar,carbonate,silicate,and clay minerals,bestows them with good stability,a large specific area and rich pore structure.Solid−liquid phase change materials(solid−liquid PCMs)exhibit significant latent heat.However,they are prone to leakage during solid–liquid phase transition process.Utilizing tailings as carriers to load solid−liquid PCMs not only addresses the issue of leakage but also provides a valorization method for the resource utilization of tailings and reduces the burden on the ecological environment.Aiming at the resource utilization of tailings,this paper reviewed the types and physicochemical properties of tailings,the encapsulation,and preparation of tailings−based phase change materials,thermal property enhancement,and practical applications.Finally,the shortcomings of the current preparation of phase change materials from tailings and the outlook for future research were described.This information can serve as a useful reference for researchers and help advance the progress of utilizing tailings as a resource for phase change heat storage.
作者
李柯
李健
邵艳秋
李静
张伟屹
邵莹莹
张涛
田超
马近伟
李书慧
朱英
LI Ke;LI Jian;SHAO Yanqiu;LI Jing;ZHANG Weiyi;SHAO Yingying;ZHANG Tao;TIAN Chao;MAJinwei;LI Shuhui;ZHU Ying(Qilu University of Technology(Shandong Academy of Sciences),Advanced Materials Institute,Shandong Engineering Research Centre of Municipal Sludge Disposal,Jinan 250000,China;Shandong Solid Waste and Hazardous Chemicals Pollution Prevention Center,Jinan 250000,China;Shandong Shanke Institute of Ecological Environment Co.LTD,Jinan 250000,China)
出处
《矿产保护与利用》
2023年第6期61-71,共11页
Conservation and Utilization of Mineral Resources
基金
国家自然科学基金青年科学基金项目(52204422)
济南市社会民生专项(202221015)
济南市“新高校20条”创业计划项目(2021GXRC124)
山东省科技型中小企业创新能力提升项目(2022TSGC1084)
山东省科技型中小企业创新能力提升工程(2023TSGC0533)。
关键词
尾矿
相变材料
封装制备
潜热增强
tailings
phase change materials
encapsulation preparation
latent heat enhancement
