Influence of Melt Holding Time on the Microstructure and Properties of CAMS Slag Glass-ceramics
DENG Leibo1, ZHANG Xuefeng2, ZHANG Mingxing1, OUYANG Shunli1, YIN Zheyi2
1 Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources, Inner Mongolia University of Science and Technology, Baotou 014010; 2 School of Physics,Inner Mongolia University of Science and Technology,Baotou 014010
Abstract: Quaternary CaO-Al2O3-MgO-SiO2 (CAMS) glass ceramics were synthesized mainly with Bayan Obo mine secondary tailing, blast furnace slag, and fly ash by melting method. The microstructure and properties of the glass ceramics under different glass melt holding time was systematically investigated by DSC, XRD, SEM, EDS, Raman, infrared spectral and physicochemical properties tester. The results indicated that the content of CaF2 increased and the amount of Al2O3 decreased as the increasing hol-ding time. Due to the change of the composition of samples, the dominant crystalline phase was diopside and the crystallization temperature of the basic glass first increased and then decreased. Meanwhile the second phase (identified as fluorite) would disappear gradually and the grain of the glass-ceramics first refined and then coarsened with the increase of glass melt holding time. Based on above-mentioned reasons, the structure and performance of the glass ceramics had changed. The glass-ceramics with glass melt hol-ding time of 5 h showed the optimal properties, of which the density, three-point bending strength and the resistance to acid or alkali corrosion are 3.09 g/cm3, 201 MPa, 7 021 MPa, 97.78% and 98.83%, respectively.
1 Yang Wei. Application of industrial waste residue and tailings to glass-ceramics[J]. Metal Mine, 2009(12):163(in Chinese). 杨玮.工业废渣和尾矿在微晶玻璃方面的应用[J]. 金属矿山, 2009(12):163. 2 Li B W, Deng L B, Zhang X F, et al. Structure and performance of glass-ceramics obtained by Bayan Obo tailing and fly ash[J]. J Non-Crystalline Solids, 2013,380:103. 3 Li Baowei, He Xiaoyu, Chen Hua, et al. Influence of Nd2O3 addition on performance of glass-ceramics synthesized with tailings of Bayan-Obo west mine[J]. Chinese J Mater Res, 2015,29(11):974(in Chinese). 李保卫, 何晓宇, 陈华, 等. Nd2O3优化白云鄂博西尾矿微晶玻璃性能机理[J]. 材料研究学报, 2015,29(11):974. 4 Deng Leibo, Zhang Xuefeng, Li Baowei, et al. Influence of CaF2 on the crystallization and corrosion resistance of CaO-Al2O3-MgO-SiO2 slag glass-ceramics[J]. Mater Rev: Res, 2016,30(9):128(in Chinese). 邓磊波, 张雪峰, 李保卫, 等. CaF2对CAMS系矿渣微晶玻璃析晶特性及抗腐蚀性能的影响[J]. 材料导报:研究篇, 2016,30(9):128. 5 Xie Ying, Wei Pengfei, Cheng Kunhuai. Effects of melting holding time on properties of CBS glass-ceramics[J]. China Ceram, 2010,46(5):48(in Chinese). 谢颖, 韦鹏飞, 陈坤怀. 不同熔制时间对CBS微晶玻璃性能的影响[J]. 中国陶瓷, 2010,46(5):48. 6 Deng Leibo, Zhang Xuefeng, Li Baowei, et al. Influence of crucible on the microstructure and properties of CaO-Al2O3-MgO-SiO2 slag glass-ceramics[J]. J Synth Cryst, 2015,44(11):3137(in Chinese). 邓磊波,张雪峰,李保卫,等.熔制坩埚对CaO-Al2O3-MgO-SiO2系矿渣微晶玻璃结构与性能的影响[J].人工晶体学报,2015,44(11):3137. 7 Li Baowei, Wang Fang, Chen Hua, et al. Influence of Cr2O3 on the microstructure and properties of the glass-ceramics produced from Bayan Obo west mine tailing[J]. J Synth Cryst, 2014,43(3):642(in Chinese). 李保卫, 王芳, 陈华, 等. Cr2O3对白云鄂博西尾矿微晶玻璃显微结构及性能的影响[J]. 人工晶体学报, 2014,43(3):642. 8 Yang H, Chen C, Sun H. Influence of heat-treatment schedule on crystallization and microstructure of bauxite tailing glass-ceramics coated on tiles[J]. J Mater Process Technol, 2008,197(1):206. 9 Liu Z, Zong Y, Ma H, et al. Influence of Al2O3 content on microstructure and properties of different binary basicity slag glass cera-mics[J]. Adv Appl Ceram, 2014,113(7):394. 10Liu Z, Zong Y, Hou J, et al. Preparation of slag glass ceramic from electric arc furnace slag, quartz sand and talc under various MgO/Al2O3 ratios[J]. Adv Appl Ceram, 2016,115(3):144. 11Liu Xinyu, Chen Guohua. Study on infrared spectra of crystal lization of CaO-Al2O3-SiO2 glass[J]. Multipurpose Utilization Mineral Resour, 2003(3):20(in Chinese). 刘心宇, 陈国华. CaO-Al2O3-SiO2玻璃晶化过程的红外光谱分析[J]. 矿产综合利用, 2003(3):20. 12闻辂, 梁婉雪, 章正刚, 等. 矿物红外光谱学[M]. 重庆: 重庆大学出版社, 1988:82. 13Tulyaganov D U, Agathopoulos S G, Ventura J M. Structural analysis and devitrification of glasses based on the CaO-MgO-SiO2 system with B2O3, Na2O, CaF2 and P2O5 additives[J]. J Non-Crystalline Solids, 2006,352:322. 14Lipinska-Kalita K E, Gramsch S A, Kalita P E, et al. In situ raman scattering studies of high-pressure stability and transformations in the matrix of a nanostructured glass-ceramic composite[J]. J Raman Spectroscopy, 2005,36(10):938. 15Virgo D, Mysen B O, Kushiro I. Anionic constitution of 1-atmoaphere silicate melts: Implications for the structure of igneous melts[J]. Science, 1980,208:1371.
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2017, Vol. 31 
