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›› 2013, Vol. 13 ›› Issue (6): 969-973.

• 反应与分离 • 上一篇    下一篇

从废旧高温合金的硫酸浸出渣中浸出分离钨钼铼

范兴祥 行卫东 董海刚 赵家春 吴跃东 刘杨 付光强   

  1. 昆明贵金属研究所 昆明贵金属研究所 昆明贵金属研究所 贵研铂业股份有限公司 昆明贵金属研究所 昆明贵金属研究所 昆明贵金属研究所
  • 收稿日期:2013-08-09 修回日期:2013-11-04 出版日期:2013-12-20 发布日期:2013-12-20
  • 通讯作者: 范兴祥

Leaching and Separation of Tungsten, Molybdenum and Rhenium from Waste Superalloys after Sulfuric Acid Leaching

FAN Xing-xiang XING Wei-dong DONG Hai-gang ZHAO Jia-chun WU Yue-dong LIU Yang FU Guang-qiang   

  1. Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology Sino-platinum Metals CO., Ltd Kunming Institute of Precious Metals Kunming Institute of Precious Metals
  • Received:2013-08-09 Revised:2013-11-04 Online:2013-12-20 Published:2013-12-20
  • Contact: FAN Xing-xiang

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被引次数

10

摘要： 对废旧高温合金硫酸浸出残渣选择HCl-FeCl3-H2O2体系氧化浸出、浸出后加入NaOH调节溶液pH值，使钨、钼、铼与铌、钽等分离，研究了反应时间、反应温度、HCl用量、FeCl3用量、H2O2用量对钨、钼、铼浸出率的影响. 结果表明，该体系能充分浸出渣中钨、钼、铼3种金属，添加FeCl3可提高钼在盐酸溶液中的浸出率. 在浸出温度70℃、浸出时间5 h、FeCl3用量100 g/L、H2O2用量10 mL/g及HCl初始用量10 mL/g的条件下，钨、钼、铼浸出率分别大于97%, 86%, 91%.

关键词: 高温合金, 钨, 钼, 铼, 浸出

Abstract: The HCl-FeCl3-H2O2 system was chosen for leaching of the slag from the leaching of superalloys with sulfuric acid, then the pH value of leaching solution adjusted with NaOH for separation of W, Mo and Re from Nb and Ta. The influential factors of leaching of W, Mo and Re, such as amount of HCl, amount of FeCl3, amount of H2O2, temperature, and leaching time were investigated. In the leaching process, FeCl3 could improve the leaching rate of Mo in the hydrochloric acid solution. At the optimum conditions of HCl 10 mL/g, FeCl3 100 g/L, H2O2 10 mL/g, temperature 70℃, and leaching time 5 h, the leaching rate of W, Mo and Re was above 97%, 86% and 91%, respectively.

Key words: superalloy, tungsten, molybdenum, rhenium, leaching

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