杂质对高岭土尾矿、铝厂污泥与镍渣合成堇青石的影响  

IInfluence of Impurities on the Cordierite Material Synthesized from Kaolin Tailing, Aluminum Factory Waste Slag and Nickel Slag

作　　者：周敏[1] 张腾[2] 李广慧[3] 陈锋[1] 柯开展[1] 李选明[1] 路俊杰[1] ZHOU Min;ZHANG Teng;LI Guanghui;CHEN Feng;KE Kaizhan;LI Xuanming;LU Junjie(Fujian Academy Of Building Research,Fuzhou 350025,Fujian,China;Fuzhou University,Fuzhou 350100,Fujian,China;Fujian University of Technology,Fuzhou 350100,Fujian,China)

机构地区：[1]福建省建筑科学研究院,福建福州350025 [2]福州大学,福建福州350100 [3]福建工程学院,福建福州350100

出　　处：《陶瓷学报》2018年第6期760-764,共5页Journal of Ceramics

摘　　要：主要探讨Fe_2O_3和CaO杂质对高岭土尾矿-铝厂污泥-镍渣合成堇青石晶相含量及晶相结构的影响,采用XRD和SEM进行测试分析,结果表明:Fe_2O_3和CaO杂质均促进液相形成,有利于堇青石的生成,并与液相熔结形成致密烧结体。当Fe_2O_3杂质含量在0.8%-1.4%范围时,生成堇青石含量最大,约在80%左右;当CaO杂质含量在4.2%时,生成堇青石含量最大,达到86%。Fe_2O_3杂质对堇青石晶胞结构影响不大,但CaO杂质对堇青石结构影响显著,当CaO杂质含量达到3.9%以上,堇青石晶胞结构由六方晶系转变为四方晶系。The influence of Fe2O3 and CaO impurities on the content and structure of cordierite material synthesized from kaolin tailings-aluminium-nickel slag sludge was discussed.Through XRD and SEM tests,the results showed that the impurities(Fe2O3 and CaO)promote the formation of the liquid phase so that the glass body and the crystal are fused together to form a compact sintered body.Fe2O3 was conducive to the formation of cordierite,and the content of cordierite was up to 80%with 0.8%-1.4%Fe2O3 content.With the increase of CaO to 4.2%,the content of cordierite was up to 86%.The results showed that Fe2O3 impurity had little effect on the cordierite crystal structure.The CaO had strong influence on the cordierite crystal structure,which was changed from hexagonal crystal system to tetragonal system,when the content of CaO was up to 3.9%.

关 键 词：高岭土尾矿 铝厂污泥 镍渣 堇青石 杂质 

分 类 号：TQ174.75[化学工程—陶瓷工业]