三种渣对危废焚烧回转窑用镁尖晶石砖和铬刚玉砖的侵蚀试验  

Slag corrosion test on magnesia spinel bricks and chrome-corundum bricks for hazardous waste incineration rotary kilns with 3 kinds of slag

作　　者：孙红刚[1,2] 李红霞 杜一昊[1] 王文武 王刚[1] Sun Honggang;Li Hongxia;Du Yihao;Wang Wenwu;Wang Gang(State Key Laboratory of Advanced Refractories,Sinosteel Luoyang Institute of Refractories Research Co.,Ltd.,Luoyang 471039,Henan,China)

机构地区：[1]中钢集团洛阳耐火材料研究院有限公司先进耐火材料国家重点实验室,河南洛阳471039 [2]有色金属新材料与先进加工技术省部共建协同创新中心,河南洛阳471023

出　　处：《耐火材料》2020年第6期518-521,共4页Refractories

基　　金：国家重点研发计划项目(2017YFB0602304)。

摘　　要：对镁尖晶石砖和铬刚玉砖两种回转窑常用耐火材料与3种不同碱度(分别为0.2、0.5、1.2)的渣在1500℃进行了抗渣试验,并采用SEM和EDS分析了抗渣前后试样的显微结构变化。结果表明:1)镁尖晶石砖的抗熔渣渗透性优于铬刚玉砖的,但抗熔渣侵蚀性不如铬刚玉砖的。2)镁尖晶石砖对高碱度渣表现出良好的抗渣性;铬刚玉砖的抗渣性具有普适性,渣的碱度对其抗渣性影响不大。Slag corrosion tests on magnesia spinel bricks and chrome-corundum bricks for rotary kilns with 3 kinds of slag with different alkalinities(0.2,0.5,and 1.2,respectively)were carried out at 1500℃,and the microstructure changes of the specimens before and after slag corrosion were analyzed by SEM and EDS.The results show that:(1)magnesia spinel brick has better slag penetration resistance but worse slag corrosion resistance than chrome-corundum brick;(2)magnesia spinel brick has good resistance to high alkalinity slag;chrome-corundum brick has universal slag resistance,and the slag alkalinity has little effect on its slag resistance.

关 键 词：回转窑 危废处理 焚烧 抗渣性 铬刚玉砖 镁尖晶石砖 

分 类 号：TQ175[化学工程—硅酸盐工业]