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Magnesium Removal from Molten Aluminum by Cl_2 Bubbling

机译：Cl_2鼓泡去除熔融铝中的镁

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The experiments were performed by introducing Cl_2 gas bubbles into Al melt in order to obtain basic information on the removal of Mg component. Thermodynamic calculations were performed to confirm the feasibility of Mg removal from Al melt. A mixture of Ar and Cl_2 gas with a mixing ratio of 10-50% in a total flowrale of 50-100 seem was bubbled into Al melt at 1000-1100 K. Mg could be removed from M melt by Cl_2 gas bubbling and the rate of removal depended largely on the total gas flow rale and the Cl_2 mixing ratio. A greater rate of decreasing Mg was observed with a higher Cl_2 mixing ratio in the hubbling gas. It was estimated that the removal rate of Mg complied with zero order kinetics. The rate-controlling slop was estimated to be the mass transfer in Al melt. The activation energy for Mg removal by Cl_2 gas bubbling was determined to be 63.1 kJ/ mol. The mechanism of Mg removal from Al melt by Cl_2 gas bubbling was proposed. The aluminum chlorides were formed by Cl_2 gas bubbling, and were expected to react with the Mg in the Al melt which resulted in the formation of MgCl_2.
机译：通过将Cl_2气泡引入Al熔体中进行实验，以获得有关Mg组分去除的基本信息。进行热力学计算以确认从铝熔体中除去Mg的可行性。将Ar和Cl_2气体的混合物以10％至5​​0％的混合比在50-100sccm的总流量中鼓入1000-1100 K的Al熔体中。通过Cl_2气体的鼓泡可以从M熔体中除去Mg去除率在很大程度上取决于总气体流量规则和Cl_2的混合比。在冒泡气体中，Cl_2的混合比越高，观察到的Mg降低率越高。据估计，Mg的去除速率符合零级动力学。速率控制的斜率估计是铝熔体中的传质。通过Cl_2气体鼓泡除去Mg的活化能被确定为63.1kJ / mol。提出了通过Cl_2气体鼓泡去除铝熔体中Mg的机理。氯化铝是通过Cl_2气体鼓泡形成的，并有望与Al熔体中的Mg反应，从而形成MgCl_2。

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