球磨整形提高石墨固废基电热板力学性能研究  

Study on Improving the Mechanical Properties of Graphite Solid Waste-based Electric Heating Plates by Ball-Milling

作　　者：秦国兴 任子杰[1,2] 宋昱晗[1,2] 李达 杨云平 吕阳 QIN Guoxing;REN Zijie;SONG Yuhan;LI Da;YANG Yunping;LÜYang(School of Resources and Environment Engineering,Wuhan University of Technology,Wuhan 430070,China;Hubei Key Laboratory of Mineral Resources Processing and Environment,Wuhan 430070,China;China Minmetals Corporation Minmetals Exploration and Development Co.,Ltd.,Beijing 100010,China;School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China;State Key Laboratory of Silicate Building Materials,Wuhan 430070,China)

机构地区：[1]武汉理工大学资源与环境工程学院,湖北武汉430070 [2]矿物资源加工与环境湖北省重点实验室,湖北武汉430070 [3]中国五矿集团五矿勘查开发有限公司,北京100010 [4]武汉理工大学材料科学与工程学院,湖北武汉430070 [5]硅酸盐建筑材料国家重点实验室,湖北武汉430070

出　　处：《金属矿山》2024年第11期106-110,共5页Metal Mine

基　　金：“十三五”国家重点研发计划项目(编号:2020YFC1909605)。

摘　　要：为改善电热板的力学性能,利用石墨矿开采废石为骨料,经过球磨整形,在添加球形石墨尾料、水泥、减水剂等的情况下制备了电热板材,试验研究了磨矿条件对试块力学性能的影响。结果表明:①石墨废石骨料经研磨,颗粒表面棱角性降低,堆密度提高;球磨整形骨料的粒度与原料相似,符合板材制备的基材配比要求。②磨矿整形骨料制备的电热板试块的抗压强度得到有效提高,抗折强度变化不大。③适宜的球磨整形条件为磨矿浓度60%、磨矿时间15 min、球磨机转速100 r/min,对应的28 d试块的抗压、抗折强度分别达53.30、8.60 MPa,与原料制备的电热板试块相比分别提高12.90、1.43 MPa。In order to improve the mechanical properties of the electric heating plate,mined waste rock is used as aggregate in graphite mine after ball milling,and the electric heating plate was prepared by adding spherical graphite tailings,cement and water reducer.The influence of grinding conditions on the mechanical properties of the test block was studied.The results showed that:①After grinding,the angular surface of the graphite waste stone aggregate is reduced and the bulk density is increased.The particle size of ball milling shaping aggregate is similar to that of raw materials,which meets the requirements of substrate ratio for plate preparation.②The compressive strength of the hot plate test block prepared by grinding and shaping aggregate is effectively improved,and the flexural strength does not change much.③The suitable ball milling shaping conditions were grinding concentration of 60%,grinding time of 15 min and ball mill speed of 100 r/min,and the compressive and flexural strength of the test block of 28 d were 53.30 MPa and 8.60 MPa,respectively,which were 12.90 MPa and 1.43 MPa higher than those of the electric hot plate test block prepared from raw materials.

关 键 词：石墨固废 球磨 颗粒整形 电热板材 

分 类 号：X75[环境科学与工程—环境工程] TB34[一般工业技术—材料科学与工程]