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%.

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国家高技术研究发展计划资助项目