Influence of Crucible Material on the Microstructure and Properties of Iron Rich Glass-Ceramics  

作　　者：邓磊波 张雪峰 LI Baowei JIA Xiaolin ZHANG Mingxing OUYANG Shunli 

机构地区：[1]Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources, Inner Mongolia University of Science and Technology [2]School of Mathematics, Physics and Biological Engineering, Inner Mongolia University of Science &Technology [3]School of Material Science and Engineering, Zhengzhou University

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2018年第1期49-55,共7页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National Natural Science Foundation of China(No.11564031);the Scientific Research Program for Universities in Inner Mongolia Autonomous Region(No.NJZY158);the Inner Mongolia University of Science and Technology Innovation Fund(No.2014QDL042)

摘　　要：Slag glass melting is usually performed on a laboratory scale in crucibles, which are economically viable tools for the production of slag glass-ceramics. In this work, quaternary CaO-Al2O3-MgO-SiO2（CAMS） glass-ceramics were prepared by melting the tailing of Bayan Obo mine tailing, blast furnace slag, and fly ash in alumina and graphite crucibles. The effect of the crucible material on the microstructure and properties of the glass-ceramics was investigated using differential scanning calorimetry, X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy and inductively coupled plasma atomic emission spectroscopy. Results indicated that the contents of Al2O3 and Fe2O3 in the initial glass were significantly changed by the corrosion of the alumina crucibles during the glass melting process and by the reducing action of the graphite crucibles. The main crystal phases of glass-ceramics melted in alumina crucibles and graphite crucibles were Ca（Mg, Fe, Al）（Si, Al）2O6, coesite and Ca（Mg, Al）（Si, Al）2O6, respectively. According to these findings, we conclude that the microstructure and properties of the glass-ceramics are affected by the crucibles.Slag glass melting is usually performed on a laboratory scale in crucibles, which are economically viable tools for the production of slag glass-ceramics. In this work, quaternary CaO-Al2O3-MgO-SiO2（CAMS） glass-ceramics were prepared by melting the tailing of Bayan Obo mine tailing, blast furnace slag, and fly ash in alumina and graphite crucibles. The effect of the crucible material on the microstructure and properties of the glass-ceramics was investigated using differential scanning calorimetry, X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy and inductively coupled plasma atomic emission spectroscopy. Results indicated that the contents of Al2O3 and Fe2O3 in the initial glass were significantly changed by the corrosion of the alumina crucibles during the glass melting process and by the reducing action of the graphite crucibles. The main crystal phases of glass-ceramics melted in alumina crucibles and graphite crucibles were Ca（Mg, Fe, Al）（Si, Al）2O6, coesite and Ca（Mg, Al）（Si, Al）2O6, respectively. According to these findings, we conclude that the microstructure and properties of the glass-ceramics are affected by the crucibles.

关 键 词：slag glass-ceramics graphite crucible alumina crucible 

分 类 号：TQ171.733[化学工程—玻璃工业]