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AbstractIn view of production of fly ash and coal gangue is very large, much attention has been paid to the problem of its resource utilization. Using ultra-fine fly ash, coal gangue and clay to roast into lamellose brick at different temperatures by certain proportion, at the same time, using fly ash to replace ultra-fine fly ash as the contrast group. In addition, we have been further studied it by using XRD, SEM, TG-DTA and other means. This article studies the superiority of using ultra-fine fly ash and coal gangue instead of clay to roast into brick and the mechanism of ultra-fine fly ash sintered material. Research shows that: the brick mixed with ultra-fine fly ash than an equal amount of fly ash has better physical properties after roasting 100?min in 100?°C. Bibulous rate can reach 10%; compressive strength reaches MU30 high-class level; Thermal coefficient of conduction is 0.41 W/(m·K).There are significant characteristics peaks of quartz and mullite on the XRD diffraction pattern of bricks. SEM photos shows that quartz cover a small amount of mullite and sintered sample is the dense; TG-DTA thermal mechanism shows that the best sinterning temperature of the sample is 1150?°C.The study shows the necessity of ultra-fine fly ash processing. 相似文献
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以苏州高岭土、滑石、镁砂为主要原料,于1350℃下保温3h烧成,合成了堇青石陶瓷.主要研究了添加不同量Bi2O3对堇青石性能的影响.研究结果表明:随着Bi2O3含量增加,烧后试样的气孔率逐渐减小,体积密度、杭折强度逐渐升高.Bi2O3的添加量为6%时,烧结试样的性能最优,合成堇青石的热膨胀系数α为2.08x10-6/℃... 相似文献
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铜铬真空触头的烧结法制造工艺 总被引:2,自引:0,他引:2
本文较详细地介绍了真空断路器用CuCr50触头材料的混粉烧结法制备工艺,包括原料Cu粉和Cr粉的选取,原材料的预处理及与含氧量的关系,压制压力对相对密度的影响等。 相似文献
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