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以商洛钼尾矿为主要原料、Si C为发泡剂制备高钼尾矿含量的轻质保温隔热泡沫陶瓷。采用万能试验机、XRD、SEM、电子显微镜等分析测试手段,研究原料组成及热处理工艺对泡沫陶瓷结构及性能的影响。结果表明:随着商洛钼尾矿的减少、发泡温度的升高、发泡剂含量的增加及保温时间的延长,均导致泡沫陶瓷的平均孔径增加,体积密度减小,抗压强度降低。最终以8℃/min的升温速度升至1000℃,再以1℃/min升至1140℃,保温20 min,随炉冷却制得体积密度0.33 g/cm3,抗压强度2.6 MPa,平均孔径1.2 mm,气孔分布均匀的高性能轻质保温隔热泡沫陶瓷材料。
To light commercial molybdenum tailings as raw materials, Si C foaming agent for the preparation of high-molybdenum tailings lightweight thermal insulation foam ceramic. Using universal testing machine, XRD, SEM, electron microscopy analysis of test methods to study the composition of raw materials and heat treatment process on the foam ceramic structure and performance. The results show that with the decrease of molybdenum molybdenum tailings, the increase of foaming temperature, the increase of foaming agent content and the prolongation of holding time lead to the increase of the average pore diameter of foam ceramics, the reduction of bulk density and the decrease of compressive strength. Finally, the temperature was raised to 1000 ° C at a heating rate of 8 ° C / min and then to 1140 ° C at 1 ° C / min for 20 min. The bulk density was 0.33 g / cm3 and the compressive strength was 2.6 MPa and the average pore size was 1.2 mm, uniform pore distribution of high-performance lightweight thermal insulation foam ceramic material.