低品位硅铝矿资源化制备固体蓄热材料与性能优化  

Preparation of Solid Heat Storage Materials from Low Grade Aluminum Silicate Ore and Optimization of its Properties

作　　者：李晓卿 王会 郝智藩 刘开琪[2] 白洋 次恩达 李建强 丁胜[5] Li Xiaoqing;Wang Hui;Hao Zhifan;Liu Kaiqi;Bai Yang;Ci Enda;Li Jianqiang;Ding Sheng(School of Materials Science and Engineering,University of Science and Technology,Beijing,100083;Institute of Process Engineering,Chinese Academy of Sciences,Beijing,100190;Institute for Advanced Materials Technology,University of Science and Technology Beijing,Beijing 100083;College of Civil and Architectural Engineering,North China University of Science and Technology,Tangshan,063210;Chifeng Nuanjie New Building Materials Co.,Chifeng,024000)

机构地区：[1]北京科技大学材料科学与工程学院,北京100083 [2]中国科学院过程工程研究所多相复杂系统国家重点实验室,北京100190 [3]北京科技大学新材料技术研究院,北京100083 [4]华北理工大学建筑工程学院,唐山063210 [5]赤峰暖捷新型建材有限责任公司,赤峰024000

出　　处：《制冷与空调（四川）》2023年第2期194-201,共8页Refrigeration and Air Conditioning

基　　金：赤峰市“科技兴蒙”行动重点专项“大型高效节能环保型储热系统研发与示范”;中央高校基本科研业务费。

摘　　要：在工业生产及生活中,大量的太阳能、风能、谷电等清洁能源得不到高效的利用,而蓄热技术不仅可以提高能源的利用效率,还能降低对环境的污染。固体蓄热材料是蓄热技术的重要部分,具有良好的稳定性,在电力采暖设备方面得到了广泛的应用。利用低品位硅铝矿为原料制备固体蓄热材料,可以实现固废资源化利用,同时可以降低固体蓄热材料成本。采用地开石相为主的低品位硅铝矿、苏州土以及纸浆废液,烧结制备固体蓄热材料,探究了颗粒级配及苏州土的添加量对样品性能的影响。结果表明:不同的颗粒配以及不同含量的苏州土会对制备的固体蓄热材料性能产生影响。当颗粒级配为50:15:35、苏州土添加量为3%时,制备的固体蓄热材料的性能较好,体积密度为2.11g/cm^(3),吸水率为7.92%,热导率为1.023W·m^(-1)·K^(-1),比热容为0.7047kJ·kg^(-1)·K^(-1),抗压强度为66.37MPa。Heat storage technology can improve the utilization of clean energy such as wind energy,solar energy and valley electricity,which can not only improve the utilization efficiency of resources,but also reduce environmental pollution.Solid heat storage material is an important part of heat storage technology,which has good stability and has been widely used in electric heating equipment.The utilization of solid waste can be realized and the cost of solid heat storage materials can be reduced by using low grade silicon-aluminum ore as raw material to prepare solid heat storage materials.In this paper,low-grade silicon-aluminite,Suzhou clay and paper pulp waste liquid waste were used to prepare solid heat storage materials by sintering.The effects of particle ratio and addition amount of Suzhou clay on the performance of the samples were investigated.The results show that different particle composition and different content of Suzhou clay will affect the properties of solid heat storage materials.When the particle ratio is 50:15:35and the addition amount of Suzhou clay is 3%,the prepared solid heat storage material has good performance with the volume density of 2.11g/cm^(3),the water absorption of 7.92%,the thermal conductivity of 1.023 W·m^(-1)·K^(-1),and the specific heat capacity of 0.7047 kJ·kg^(-1)·K^(-1).The compressive strength is 66.37MPa.

关 键 词：固体蓄热材料 低品位矿 地开石 固废资源化 烧结 

分 类 号：TK0[动力工程及工程热物理]