添加高铝粉煤灰对废窑具制备耐高温材料性能的影响  

Effect of adding high aluminum pulverized coal ash on the properties of high temperature resistant materials prepared by waste kiln furniture

作　　者：王玲玲 林凡凯 刘明勇 黄朝晖[1] 房明浩[1] 闵鑫[1] Wang Lingling;Lin Fankai;Liu Mingyong;Huang Chaohui;Fang Minghao;Min Xin(School of Materials Science and Engineering,China University of Geosciences(Beijing),Beijing 100083,China)

机构地区：[1]中国地质大学(北京)材料科学与工程学院,北京100083

出　　处：《耐火与石灰》2024年第1期11-16,共6页Refractories & Lime

基　　金：国家重点研发计划“固废资源化”项目“大宗低阶固废规模化制备高值矿物材料关键技术”课题三“陶瓷固废微结构屏蔽调控制备耐高温材料研究及示范”(2018YFC1901503)。

摘　　要：为实现废窑具的高值材料化利用,以废窑具为主要原料,黏土和高铝粉煤灰为添加剂,采用干压成型法制备出坯体,分别在1100℃、1150℃、1200℃、1250℃下热处理保温3 h,制备出废窑具基耐高温材料。研究了高铝粉煤灰添加量对废窑具基耐高温材料的物相组成、显微形貌、物理性能和常温力学性能的影响,同时还研究了以不同结合剂制备的废窑具基耐高温材料的性能。结果表明:废窑具基耐高温材料的最佳工艺条件为热处理温度1250℃,高铝粉煤灰添加量为30%,所得试样的常温抗折强度为18.1 MPa,常温抗压强度为57.7 MPa;结合剂的种类对试样的常温力学性能也有一定影响。To achieve high-value utilization of waste kiln furniture,with waste kiln furniture as the main raw material,clay and high aluminaum pulverized coal ash as additives,the green bodies are prepared by dry compression molding method,and kept at temperatures of 1100℃,1150℃,1200℃,and 1250℃for 3 hours to produce waste kiln furniture-based high-temperature resistant materials.Meanwhile,by studying the influence of the dosage of high alumina pulverized coal ash on the phase composition,microstructure,physical properties,and room temperature mechanical properties of waste kiln furniture-based high-temperature resistant materials,the performance of waste kiln furniture-based high-temperature resistant materials prepared with different binders is illustrated in this paper.The results show that the optimal process conditions for high-temperature resistant materials based on waste kiln furniture are the heat treatment temperature of 1250℃,the optimal dosage of high alumina pulverized coal ash is 30%,and the obtained sample has a room temperature flexural strength of 18.1 MPa and a room temperature compressive strength of 57.7 MPa.The nature of binder has a certain impact on the mechanical properties of the samples at room temperature.

关 键 词：废窑具 耐高温材料 高铝粉煤灰 固废高值化利用 

分 类 号：TQ175.712.2[化学工程—硅酸盐工业]