【作者】 钟莲云； 吴伯麟； 宋杰光； 张联盟；

【Author】 ZHONG Lian-yun, WU Bo-lin, SONG Jie-guang, ZHANG Lian-meng (State Key Lab. of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology, Wuhan 430070, China;Department of Materials and Chemical Engineering, Guilin Institute of Technology, Guilin 541004, China; Educational Ministry Key Lab of Non-ferrous Materials and Synthesis New Technology, Guitin 541004, China)

【机构】 武汉理工大学材料复合新技术国家重点实验室；

【摘要】 研究硅酸铝及刚玉质耐火材料废料的再生利用技术.通过将废料与适量CaO-MgO-A12O3-SiO2体系的助熔荆配合,采用冷等静压成型工艺或可塑成型工艺和低温快烧工艺,制备了氧化铝含量为50%-70%的性能优异的陶瓷研磨介质.将制备瓷球与对比样瓷球在球磨罐中对磨的结果表明:这种含铝量低于70%的陶瓷研磨介质的磨损率,仅为目前从国内工厂取到的国内最优良中铝中档瓷球的1/2-1/5,良好高铝高档93瓷球的1/2,与最好的高铝高档93瓷球持平,与国际最高水平的高档95瓷球相近.XRD分析表明瓷球的主晶相为刚玉,次为莫来石,尖晶石、钙长石和磷石英.SEM观测说明陶瓷晶粒细小、均匀,平均粒径仅为5-6μm,气孔分布均匀并多为圆形闭气孔,断裂方式为穿晶断裂.更多还原

【Abstract】 Recycling technology of aluminosilicate and corundum refractory waste to prepare high value ceramic grinding media was studied. The alumina ceramic grinding media with alumina content of 50%~70% were prepared by mixing the main aluminaosilicate refractory waste raw materials with appropriate CaO-MgO-Al2O3-SiO2 quaternary flux agent and shaping by cold isostatic pressing or plastic molding technology and using low temperature and fast sintering technology. The wear resistance of the prepared ceramic grinding media and the compared samples were tested in corundum pot by intergrounding in the pot. The results showed that the prepared ceramic grinding media exhibit excellent wear resistance: it is only 1/2-1/5 of the using excellent mid-alumina and mid- grade ceramic ball, 1/2 of the excellent high alumina high grade 93 porcelain ball, equal to the most excellent high alumina and high grade 93 porcelain, and near to the most excellent 95 porcelain ball with was represent the highest level of the alumina ceramic ball used in construction industry. Here all the compared samples were come from the using factory in China. XRD analysis showed that the main crystal phase of the refractory waste was corundum and the secondary was mullite and tridymite and the main phase of the ceramic ball was corundum, and the secondary was mullite spinel, anorthite and tridymite. Observation under the SEM showed that the size of the crystalline granular was small and uniform with average diameter of 5-6 micrometer.更多还原