CAJ | 학술논문

为了弄清含铬耐火材料是否在使用过程中都会形成六价铬化合物，采用XRD、XPS 和ICP等手段分析了水泥回转窑烧成带用镁铬残砖及RH炉（浸渍管）用镁铬残砖中Cr6＋的存在情况。结果表明：水泥回转窑烧成带用镁铬残砖中有六价铬化合物存在，并且含量较高；RH炉（浸渍管）用镁铬残砖中没有发现六价铬化合物。这表明，并非在所有应用环境中含铬耐火材料都会生成六价铬化合物。
위료롱청함락내화재료시부재사용과정중도회형성륙개락화합물，채용XRD、XPS 화ICP등수단분석료수니회전요소성대용미락잔전급RH로（침지관）용미락잔전중Cr6＋적존재정황。결과표명：수니회전요소성대용미락잔전중유륙개락화합물존재，병차함량교고；RH로（침지관）용미락잔전중몰유발현륙개락화합물。저표명，병비재소유응용배경중함락내화재료도회생성륙개락화합물。
In order to investigate whether hexavalent chromium is formed in all Cr2O3-containing refractories during service,XRD,XPS and ICP were used to determine the chemical valence of chromium in residual MgO-Cr2O3 bricks for firing zone of cement rotary kilns and RH furnaces (snorkel).The results show that Cr6+is detected in the residual MgO-Cr2O3 bricks for cement rotary kilns,but not in the bricks for RH fur-naces,indicating that hexavalent chromium does not form in all applications of Cr2O3-containing refractories.