电站锅炉中粉煤灰与SiC耐火材料结渣性研究

RESEARCH ON SLAGBONDING INTERACTIONS BETWEEN COAL-ASH AND SiC REFRACTORY IN BURNER QUARLS

本文主要研究含Cr_2O_3的硅酸锆结合SiC耐火材料的抗粉煤灰侵蚀规律,将两种不同的粉煤灰平铺在SiC耐火材料上,作用温度为1250～1450℃,保温时间为40小时,然后用视频光学显微镜和XRD衍射图谱来确定其显微结构和物相组成,初步实验结果表明SiC质耐火材料具有较好的抗煤灰侵蚀性能。

The paper mainly studies the coal-ash resistance to zirconium silicate bonded SiC refractory. Two types of coal-ash tiled SiC refractory and were heated at 1250-1450℃ for 40 hours, then XRD pattern and optical microscope were employed to determine the phase composition and microstructure of SiC refractory. It is suggested that zirconium silicate bonded SiC refractory containing Cr203 has potential application in burner quarls with good coal-ash resistance.