利用陶瓷工业废弃物抛光渣制备陶瓷砖的研究
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摘要
以陶瓷抛光废渣为主要原料烧制陶瓷砖坯体,利用XRD、TG研究了抛光渣性能,探讨了抛光渣掺入量和烧结温度对坯体性能的影响,通过正交试验确定最佳配比和工艺制度,利用SEM分析研究了烧成机理。结果表明,陶瓷抛光渣的掺入可以有效地降低陶瓷抛光砖烧结温度,抛光渣掺入量在60%～80%,1 080℃烧结时,吸水率、收缩率和体积密度都趋于稳定,抛光渣中Si C的存在导致坯体在1 100℃以上烧结时坯体会发泡。通过正交试验得到最优原料配方优化条件后制备的抛光砖吸水率为0.071%、收缩率为12.86%。陶瓷抛光渣的掺入量可以达到70%,有效地提高了陶瓷抛光渣的利用率,缓解了陶瓷工业的环境污染问题。
Ceramic tile blanks were fired from ceramic polishing waste. The properties of polishing slag were studied by XRD and TG. The influence of polishing slag incorporation and sintering temperature on the properties of the blank was discussed. The firing mechanism was studied by SEM analysis. The results show that the incorporation of ceramic polishing slag can effectively reduce the sintering temperature of ceramic polished tiles. When 60%-80% of the polishing slag is mixed at 1080 ℃, the water absorption, shrinkage and bulk density tend to be stable. The presence of SiC in the slag causes the body to foam when sintered at temperatures above 1 100 ℃. The water absorption rate of the polished bricks prepared by the orthogonal test was optimized to be 0.071% and the shrinkage was 12.86%. The amount of ceramic polishing slag can reach 70%, which effectively improves the utilization rate of ceramic polishing slag and alleviates the environmental pollution problem of the ceramic industry.
Ceramic tile blanks were fired from ceramic polishing waste. The properties of polishing slag were studied by XRD and TG. The influence of polishing slag incorporation and sintering temperature on the properties of the blank was discussed. The firing mechanism was studied by SEM analysis. The results show that the incorporation of ceramic polishing slag can effectively reduce the sintering temperature of ceramic polished tiles. When 60%-80% of the polishing slag is mixed at 1080 ℃, the water absorption, shrinkage and bulk density tend to be stable. The presence of SiC in the slag causes the body to foam when sintered at temperatures above 1 100 ℃. The water absorption rate of the polished bricks prepared by the orthogonal test was optimized to be 0.071% and the shrinkage was 12.86%. The amount of ceramic polishing slag can reach 70%, which effectively improves the utilization rate of ceramic polishing slag and alleviates the environmental pollution problem of the ceramic industry.
引文
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[2]曾权,王业豪,向发清,等.抛光废渣回收利用于抛光砖生产的研究[J].佛山陶瓷,2012(8):3-26.
[3]RAMBALDI E,ESPOSITO L,TUCCI A,et al.Recycling of polishing porcelain stoneware residues in ceramic tiles[J].J Eur Ceram Soc,2007,27(12):3509-3515.
[4]乔木,王欣丹,王艳,等.抛光砖抛光废料的回收利用途径分析[J].中国陶瓷,2011(1):25-28.
[5]缪松兰,马光华,李清涛等.建筑陶瓷抛光废渣制备轻质陶瓷材料的研究[J].陶瓷学报,2005,26(2):20-22.
[6]苏达根,董桂洪,钟明峰.抛光砖污泥焙烧发泡的机理研究[J].中国陶瓷,2007,43(9):71-79.
[7]奚修安.抛光砖废料的烧成发泡机理及应用研究[D].广州:华南理工大学,2011.