利用抛光废料为原料制备轻质多孔陶瓷

Preparation of Lightweight Porous Ceramics Using Polishing Waste as Raw Material

探究了以建筑陶瓷抛光废料为原料制备轻质多孔陶瓷的可行性,研究了烧成温度、SiC含量、保温时间等对轻质多孔陶瓷性能的影响。实验结果表明:随着烧结温度的提高,以及SiC含量和保温时间的增加,轻质多孔陶瓷的平均孔径和整体坍塌度显著增大。轻质多孔陶瓷的抗折强度与平均孔径呈负相关。为了在轻质多孔瓷砖中实现均匀的孔径和无显著缺陷,SiC添加量为3wt.%,烧成温度为1200℃,保温时间为30 min,能够获得平均孔径为1.11 mm、体积密度为0.49 g/cm^(3)、抗折强度为2.56 MPa的轻质多孔陶瓷。

This paper explored the feasibility of using architectural ceramic polishing waste as raw material to prepare lightweight porous ceramics.The effect of sintering temperature,SiC content,and insulation time on the properties of lightweight porous ceramics was investigated.Experimental results show that with increasing sintering temperature,SiC content,and holding time,the average pore size and overall collapse of the porous ceramics significantly increase.The flexural strength of lightweight porous ceramics is negatively correlated with the average pore size.To achieve uniform pore size and no significant defects in lightweight porous ceramics,SiC addition is of 3wt.%,a sintering temperature is of 1200℃,and an insulation time is of 30 minutes,lightweight porous ceramics with an average pore size of 1.1l mm,a bulk density of 0.49 g/cm,and a flexural strength of 2.56 MPa were prepared.