【摘要】 对Al₂O₃-CaO-CaF₂渣系的初晶温度、电导率以及物相组成进行了研究。研究结果表明:向CaO-Al₂O₃二元系中分别添加10%、15%以及20%的CaF₂时,Al₂O₃-CaO-CaF₂系的渣样电导率随着CaF₂含量的增加而增大,初晶温度不断降低;随着渣系的温度升高,该渣样的电导率也不断增大,当添加20%CaF₂时,Al₂O₃-CaO-CaF₂渣的初晶温度为1 468℃。A₂O₃-CaO-CaF₂渣系中主要物相组成为CaAl₂O₄、Ca₂Al₃O₆F、Ca₂AlF₇以及AlF₃。CaF₂添加量为10%时,熔渣中有大量的CaAl₂O₄物质,随着CaF₂添加量的增加,CaAl₂O₄物质越来越少,而Ca₂Al₃O₆F和Ca₂AlF₇物质越来越多。更多还原

【Abstract】 Studied the primary crystal temperature,conductivity and phase composition of Al₂O₃-CaO-CaF₂ slag system.The results showed:when adding 10%、15%and 20%CaF₂ into CaO-Al₂O₃ respectively,the conductivity of Al₂O₃-CaO-CaF₂ slag sample increased and the primary crystal temperature continuously decreased with the increasing CaF₂ content.Meanwhile, the conductivity of this slag sample also continuously increased with the rising CaF₂ content.When the CaF₂ content was 20%,the primary crystal temperature was 1 468℃.The phase composition in Al₂O₃-CaO-CaF₂ slag was composed of CaAl₂O₄、Ca₂Al₃O6F、Ca₂AlF₇ and AlF₃.When the CaF₂ content was 10%,there was lots of CaAl₂O₄ in slag.The CaAl₂O₄ content decreased with the increasing of CaF₂,however,the Ca₂Al₃O₆F and Ca₂AlF₇ increased.更多还原