首页|利用液态锌从镍基高温合金中一步选择性提取镍

利用液态锌从镍基高温合金中一步选择性提取镍

One-step and selective extraction of nickel from nickel-based superalloy by molten zinc

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采用熔融锌处理镍基高温合金并选择性地提取镍.研究加热温度、加热时间、锌与高温合金的质量比等因素对高温合金中金属提取率的影响.在加热温度为850℃,加热时间为4 h,锌/高温合金的质量比为10:1的最优条件下,镍的提取率为95.2％,铁的提取率为55.4％,铬的提取率为30.4％,而难熔金属(钛、钼、铌)的提取率较低.在后续的真空蒸馏过程中,蒸馏后得到的镍合金中含有73.5％的镍(质量分数).此外,蒸馏得到99.9％的锌(质量分数).研究结果表明,从镍基高温合金废料中直接提取镍是可行的.
Nickel-based superalloy was treated with molten zinc for the selective extraction of nickel. The effects of heating temperature, heating time, and the mass ratio of zinc to superalloy on the extraction of metals in the superalloy were investigated. An extraction rate of 95.2％for nickel, 55.4％for iron and 30.4％for chromium, but low extraction rates of the refractory metals (titanium (Ti), molybdenum (Mo), and niobium (Nb)) were obtained under the optimal conditions of the heating temperature of 850 ℃, the heating time of 4 h, and the zinc/superalloy mass ratio of 10:1. In the subsequent vacuum distillation process, the obtained nickel alloy contained nickel with a purity of 73.5 wt.％after zinc removal. Moreover, the recovered zinc after the distillation process had a purity of 99.9 wt.％. The results of the investigated process indicated the possibility of extracting nickel directly from nickel-based superalloy scraps.

superalloyzincnickelextractionvacuum separation

田庆华、甘向栋、于大伟、崔富晖、郭学益

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中南大学 冶金与环境学院,长沙 410083

有色金属资源循环利用国家地方联合工程研究中心,长沙 410083

有色金属资源循环利用湖南省重点实验室,长沙 410083

高温合金 锌 镍 提取 真空蒸馏

authors are grateful for the financial supports from the National Natural Science Foundation of Chinaauthors are grateful for the financial supports from the National Natural Science Foundation of Chinaauthors are grateful for the financial supports from the National Natural Science Foundation of ChinaHunan Natural Science Foundation,ChinaHunan Key Research and Development Program,China

5192210851874371519043502019JJ200312019SK2061

2021

10.1016/S1003-6326(21)65620-0

中国有色金属学报(英文版)
中国有色金属学会

中国有色金属学报(英文版)

CSTPCDCSCDSCI
影响因子：1.183
ISSN：1003-6326
年,卷(期)：2021.31(6)
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