Application of the Wilson Equation for Zn-Al-Fe Alloy in Vacuum Distillation

Abstract

In this work, vacuum distillation experiments of Zn-Al-Fe alloy were performed. A method for predicting the in nite dilute activities in the Zn-Fe system was examined. The activities of components of the Zn-Al-Fe system were calculated based on the Wilson equation. Vacuum distillation of Zn-Al-Fe alloy was discussed based on the experimental investigations of the distillation temperature, the holding time and the thickness of the raw materials mixture by response surface methodology. The results showed that there were remarkable in uences of the distillation temperature, holding time and little in uence of the thickness of the raw materials mixture on vacuum distillation. The zinc in Zn-Al-Fe alloy were effectively recovered at 800 C-850 C for 60 min-75 min. This work aims to investigate the vacuum distillation of Zn-Al-Fe alloy to optimize the process for high zinc recovery. After vacuum distillation, the direct yield and volatilization rate for zinc were 99.8% and 99.79% when the distillation temperature was 800 C, and the soaking time was 75 min. The calculations and experimental results demonstrated that this method can guide the vacuum distillation of Zn-Al-Fe alloy based on the Wilson equation.

Ab initio molecular dynamic simulation of Zn-Al-Fe alloys

“…Aluminum alloys have been extensively applied in various fields, owing to their superior performance [1][2]. Among the aluminum alloys, the Zn-Al-Fe alloy is the most widely used alloy [3], and has become the focus of many researchers [4][5][6]. For example, Zn-Al-Fe alloy is the main component of hot-dip galvanizing slag [7], which is the most convenient and effective solution for preventing steel corrosion.…”