Activity Measurements of the Ternary Liquid AI-Si-Fe System by the EMF Method*
نویسندگان
چکیده
The application of the subhalide reaction to Al refining has recently been a subject of increasing concern as a process to obtain pure Al from crude Al alloys. In this process, the ternary Al-Si-Fe alloy containing various amounts of Si and Fe which is produced(1)-(3) by the direct reduction of bauxite or alumina-bearing ores is used as the raw material. Therefore, on obtaining pure Al from Al-Si-Fe ternary alloys by the subhalide process, it is very important to know the thermodynamic properties of ternary Al-Si-Fe alloys. On the subhalide reaction, the reactivity between AlCl3 and Al in the alloys depends strongly on the activity of Al, so that it is indispensable to know the activities in the ternary Al-Si-Fe system. However, very little work has been reported about this system. In this report, the activities of Al in the ternary liquid Al-Si-Fe system were determined by the emf method
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