Traditional porcelain tile companies worldwide produce large amounts of residues during the polishing process. The recycling of these porcelain polishing residue becomes more critical. This study evaluates the incorporation of porcelain polishing residues as a raw material to produce lightweight porous ceramics as a new insulation material. Also, cellulose was used as the pore-making additive. The effect of sintering temperature and cellulose additive on the sintering behavior of porous ceramics, such as bulk density, linear shrinkage, water absorption were investigated. Flexural strength of the fired specimens was measured by three-point bending method. Thermal conductivities of the porous ceramics were predicted using laser flash method. Microstructural and phase observations were performed by scanning electron microscopy and X-ray diffractometry. Relatively low thermal conductivity of the samples sintered at 1100°C was obtained at 0.097 W.m^–1.K^–1 when 2.5 wt% cellulose additive was added, with low bulk density (<1 g.cm^–3), water absorption (0.7%) and flexural strength (3.09 Mpa). These results indicate that the porcelain polishing residues could be used for lightweight porous ceramics production, thus giving rise to a new possibility for an environmental management of this abundant waste.

世界各地的传统瓷砖公司在抛光过程中会产生大量残留物。这些瓷抛光残留物的回收利用变得更加关键。本研究评估了将瓷抛光残留物作为原材料生产轻质多孔陶瓷作为新型绝缘材料的方法。此外，纤维素被用作造孔添加剂。研究了烧结温度和纤维素添加剂对多孔陶瓷烧结行为的影响，如体积密度、线收缩率、吸水率等。烧成试样的抗弯强度采用三点弯曲法测定。使用激光闪光法预测多孔陶瓷的热导率。通过扫描电子显微镜和X射线衍射仪进行微观结构和相位观察。在 1100°C 下烧结的样品在 0.097 Wm 时获得了相对较低的热导率^–1 .K ^–1当添加 2.5 wt% 纤维素添加剂时，具有低堆积密度 (<1 g.cm ^–3 )、吸水率 (0.7%) 和抗弯强度 (3.09 Mpa)。这些结果表明，瓷抛光残渣可用于轻质多孔陶瓷的生产，从而为这种大量废物的环境管理提供了新的可能性。