Bearing significant concentrations of high value and critical metals, superalloy scraps require comprehensive recycling for metal reclamation. In this study, nickel-based superalloy was treated with molten Mg-Zn for the selective extraction of nickel. The influence of heating temperature, the molar ratio of Mg to Zn in the molten metal, Mg-Zn/superalloy mass ratio, and heating time on metal extraction were investigated. Using the heating temperature of 800 °C, the Mg/Zn molar ratio of 9/1, the Mg-Zn/superalloy mass ratio of 5/1, and heating time of 240 min, the extraction rate of 97.1% was achieved for Ni, and the extraction rates of Fe, Cr and refractory metals (Nb, Mo and Ti) were all less than 1%. In the subsequent vacuum distillation process, nickel with a purity of 98.3 wt% was obtained. Therefore, the proposed method is a short, clean, and efficient process for selectively extracting nickel from the superalloy scraps.

中文翻译：

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熔融镁锌从高温合金废料中选择性提取镍

高温合金废料含有大量高价值和关键金属，需要对金属回收进行全面回收。在这项研究中，镍基高温合金用熔融的 Mg-Zn 处理，以选择性提取镍。研究了加热温度、熔融金属中Mg与Zn的摩尔比、Mg-Zn/高温合金质量比、加热时间对金属提取的影响。加热温度800℃，Mg/Zn摩尔比9/1，Mg-Zn/高温合金质量比5/1，加热时间240 min，Ni的提取率达到97.1% ,Fe、Cr和难熔金属(Nb、Mo、Ti)的提取率均小于1%。在随后的真空蒸馏过程中，得到了纯度为 98.3 wt% 的镍。因此，所提出的方法是一种简短、干净、