【摘要】 笔者以煤矸石、陶瓷抛光渣和建筑基坑土渣为主要原料，碳化硅为发泡剂，锂辉石尾矿、镁质土渣和微晶玻璃尾料为外加料，采用高温发泡法成功制备了高强、低体积密度的多孔陶瓷，探索了最佳烧成工艺。通过TG-DSC、XRD、SEM等检测对多孔陶瓷进行了表征，并测试其体积密度和抗压强度。结果表明：试样的最佳烧成温度为1 150℃,最佳保温时间为50 min,在最佳温度制度条件下，样品的体积密度为416 kg/m~3,抗压强度为5.5 MPa,多孔陶瓷的主晶相为石英、堇青石和莫来石。更多还原

【Abstract】 High-strength and low density porous ceramics were successfully prepared via the high temperature foaming method, using coal gangue, ceramic polishing slag and building soil slag as main raw materials, silicon carbide as foaming agent, spodumene slag, magnesia soil slag and microcrystalline glass slag as additional materials. The optimum sintering process was explored. The porous ceramics were characterized by TG-DSC, XRD and SEM. The bulk density and compressive strength of the porous ceramics were measured. The results show that the best sintering temperature of the sample is 1 150 ℃ and the best soaking time is 50 min. The bulk density of the samples is 416 kg/m~3, the compressive strength is 5.5 MPa. The main crystalline phases of porous ceramics are quartz, cordierite and mullite.更多还原