摘要
以铁合金厂铝铬渣和钢厂废弃镁碳砖为主要原料,通过固相烧结反应合成MgAl2O4材料,研究分析铝铬渣与废弃镁碳砖细粉比例关系对合成MgAl2O4材料组成和结构的影响。用XRD、SEM及Rietveld quantification软件对材料中结晶相组成和结构进行表征。结果表明:铝铬渣和废弃镁碳砖细粉经1500℃保温2 h煅烧,可以合成出镁铝尖晶石材料。当镁碳砖含量为40%,铝铬渣为60%时,合成材料微观结构中出现典型的镁铝尖晶石八面体形貌特征,结晶相发育完整,结构致密,镁铝尖晶石含量达到94%。
Magnesium aluminum spinel （MgAl2O4） recombination materials was prepared by solid state reaction using aluminum chromium slag and wasted MgO-C brick powder as main starting materials o The main crystalline phase and microstructure were examined by X-ray diffraction, scanning electron microscopy and X＇Pert plus software. The result shows that magnesium aluminum spine grain growth is complete and clear, the appearance is typical octahedral morphology, arrangement is dense and the content of MgAl2O4 is 94% when the ratio of wasted MgO-C brick and aluminum chromium slag is 2：1 .
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2013年第8期1506-1509,1514,共5页
Bulletin of the Chinese Ceramic Society
基金
辽宁省教育厅项目
关键词
铝铬渣
废弃镁碳砖
镁铝尖晶石
固相反应
aluminum chromium slag
wasted MgO-C brick
magnesium aluminum spinel
solid reaction
