LiF对Na3AlF6-K3AlF6-AlF3熔体初晶温度和Al2O3溶解度的影响

来源期刊:中国有色金属学报2010年第5期

论文作者:黄有国 田忠良 赖延清 李劼 刘业翔

文章页码:903 - 907

关键词:Al2O3;LiF;Na3AlF6-K3AlF6-AlF3熔体;初晶温度;溶解度

Key words:Al2O3; LiF; K3AlF6-K3AlF6-AlF3 melt; liquidus temperature; solubility

摘    要:采用步冷曲线法测定Na3AlF6-K3AlF6-AlF3-LiF熔体的初晶温度,采用旋转刚玉片质量损失法测定Al2O3在Na3AlF6-K3AlF6-AlF3-LiF熔体中的溶解度。结果表明:当LiF添加量在0~4%范围内时,每添加1% LiF使Na3AlF6-K3AlF6-AlF3熔体的初晶温度降低3~4.7 ℃,小于Na3AlF6-AlF3熔体中添加LiF后初晶温度的影响;在0~3%的范围内,每添加1% LiF将使 Al2O3在Na3AlF6-K3AlF6-AlF3熔体中的溶解度降低0.23%~0.55%。

Abstract: The liquidus temperatures of Na3AlF6-K3AlF6-AlF3-LiF melts were tested by cooling curve, and the solubilities of Al2O3 in Na3AlF6-K3AlF6-AlF3-LiF melts were determined by the mass loss of rotating sintered corundum disc. The results show that the liquidus temperature decreases by 3-4.7 ℃ with increasing LiF by 1% in the content range of 0-4%, the increment is less than that in Na3AlF6 melts. The solubility of Al2O3 in Na3AlF6-K3AlF6-AlF3 melts decreases by 0.23%-0.55% with increasing LiF by 1% in the content range of 0-3%.

基金信息:国家重点基础研究发展计划资助项目
国家高技术研究发展计划资助项目

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