SiO_2对卫燃带材料上煤灰结渣影响的实验研究  

Experimental Investigation on the Effects of SiO_2 on Coal-ash Slagging on Refractory Boards

作　　者：刘唐庆[1] 陈冬林[1] 裴晓冲[1] 

机构地区：[1]长沙理工大学能源与动力工程学院,长沙410076

出　　处：《武汉理工大学学报》2009年第17期81-84,共4页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(50576005)

摘　　要：以低熔点云贵煤灰为基样,配制SiO2含量为50%、60%、70%、80%的灰试样,分别将其均匀疏松散布在SiC质、高铝质、低铝质3种耐火材料板上,然后依次将其置于马弗炉中经1250℃煅烧20 h,待试样自然冷却后取出试样观察并进行XRD分析,结果表明:同种耐火材料板上灰试样的结渣程度随SiO2含量的递增表现出先由轻变重,再由重变轻的特点;SiC质耐火材料对低SiO2灰的抗结渣能力较强,而铝质耐火材料对高SiO2灰的抗结渣能力较强。Based on Yungui coal ash with low fused temperature, sample ashes with SiO2 of 50 %, 60 % and 70 %, 80 % were prepared and then laid uniformly and loosely on SiC, corundum and highaluminum based refractory boards and then were sintered 20 hours respectively under 1 250 ℃in a muffle. After being cooled down naturally, observations and XRD analyses were made and the results show that： slagging becomes heavier and then lighter with the increase of SiO2 in coal ash; SiCbased refractory board has a stronger slagging resistance to low SiO2 coal ash, hut corundum and highaluminumbased one to high SiO2 coal ash.

关 键 词：酸性氧化物 卫燃带 煤灰 抗结渣 

分 类 号：TK[动力工程及工程热物理]