矿产保护与利用2023，Vol.43Issue(6)：72-78,7.DOI:10.13779/j.cnki.issn1001-0076.2023.06.008
黄金尾矿/粉煤灰制备相变储能材料及其性能研究
Preparation and Properties of Phase Change Energy Storage Materials with Gold Tailings/Fly Ash
摘要
Abstract
Tailings is a type of misaligned resource that has received widespread attention for comprehensive utilization.Tailings can serve as carriers for phase change materials(PCMs)in thermal energy storage applications with rich pore structures and relatively large specific surface areas.In this study,a novel composite phase change material(CPCM)was prepared by a hybrid sintering method to combine gold tailings-fly ash mixture as the base material with solar salt as the phase change material for thermal energy storage.The chemical compatibility of the CPCM analyzed by X-Ray Diffraction(XRD).And the micro-structure,thermal conductivity performance of the CPCM were characterized by Scanning Electron Microscopy(SEM),Differential Scanning Calorimeter(DSC)and Laser Flash Analysis(LFA).The results showed that when the content of gold tailings was 22.5%,fly ash was 22.5%and solar salt was 55%,the composite has the best properties and good chemical compatibility.Furthermore,the maximum latent heat of the CPCM was 53.8 J/g,its thermal conductivity was 0.27 W/(m·K),and reached a mechanical strength of 33.7 MPa.Critically,the CPCM specimens had good cycling reliability after 100 thermal cycles.In conclusion,the utilization of tailings to prepare phase change energy storage materials was considered to be feasible and provided a new avenue for the resource utilization of tailings.关键词
黄金尾矿/相变储能材料/储热性能/导热性能/尾矿资源化Key words
gold tailings/phase change material for energy storage/thermal storage properties/thermal conductivity/tailings resource utilization分类
矿业与冶金引用本文复制引用
王晓宇,李书慧,朱英,李健,张伟屹,李静,邵艳秋,邵莹莹,张涛,田超,马近伟..黄金尾矿/粉煤灰制备相变储能材料及其性能研究[J].矿产保护与利用,2023,43(6):72-78,7.基金项目
国家自然科学基金青年科学基金项目(52204422) （52204422）
济南市社会民生专项(202221015) （202221015）
济南市"新高校 20条"创业计划项目(2021GXRC124) （2021GXRC124）
山东省科技型中小企业创新能力提升项目(2022TSGC1084) （2022TSGC1084）
山东省科技型中小企业创新能力提升工程(2023TSGC0533) （2023TSGC0533）
