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采用扫描电镜、能谱分析仪和X射线衍射等方法对燃煤电站锅炉SiC质卫燃带上结渣的渣样进行了测试,并就渣样的形貌、结晶物相转化特性及其渣样成分分布进行了分析研究.结果表明:煤颗粒的不充分燃烧造成碱性金属阳离子向SiC耐火板侧发生扩散,但难以穿过耐火板表层的SiO2保护膜,从而与SiC质卫燃带通过机械结合的方式相互黏结在一起;方晶石和鳞石英易与耐火板发生熔融冶金结合,形成较强的黏结作用,但是耐火板处熔融的片状鳞石英和方晶石含量较少,因此渣、板之间总体的黏结作用较弱.
The slag samples from the coal-fired power plant boiler SiC-Ti gasification belt were tested by scanning electron microscopy, energy spectrum analyzer and X-ray diffraction. The morphology of slag samples, The results show that the incomplete combustion of coal particles causes the diffusion of basic metal cations to the SiC refractory plate side, but it is difficult to pass through the SiO2 protective film on the surface of the refractory plate, Mechanical bonding with each other bonded together; cristobalite and scale quartz easy to occur with the fusion of fire-resistant metallurgical metallurgical bond to form a strong bond, but the flake at the flake melting of flaky quartz and cristobalite content is less slag , The overall bond between the plates is weaker.