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过程工程学报 ›› 2017, Vol. 17 ›› Issue (4): 732-738.DOI: 10.12034/j.issn.1009-606X.217110CSTR: 32067.14.jproeng.217110

• 反应与分离 • 上一篇    下一篇

真空分离法分离Sn-Zn合金粉

韩继标1,2,3， 保宇程1,2， 李一夫1,2*， 蒲正浩1,2,3， 杨 斌1,2,3， 戴永年1,2   

  1. 1. 昆明理工大学真空冶金国家工程实验室，云南 昆明 650093; 
    2. 复杂有色金属资源清洁利用国家重点实验室，云南 昆明 650093;
    3. 云南省有色金属真空冶金重点实验室，云南 昆明 650093
  • 收稿日期:2017-01-12 修回日期:2017-02-12 出版日期:2017-08-20 发布日期:2017-08-16
  • 通讯作者: 李一夫 29376154@qq.com
  • 基金资助:
    云南省科技领军人才培养计划项目;物理法制备高纯金属锡的基础研究;科技部有色金属真空冶金创新团队项目;基于固液-气液相变提纯金属锡的基础研究

Separation of Tin and Zinc from Tin?Zinc Alloy Powders by Vacuum Distillation

Jibiao HAN1,2,3,  Yucheng BAO1,2,  Yifu LI1,2*， Zhenghao PU1,2,3,  Bin YANG1,2,3,  Yongnian DAI1,2   

  1. 1. National Engineering Lab for Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, Yunnan 650093, China;
     2. State Key Laboratory of Complex Non-ferrous Metal Resources Clear Utilization, Kunming, Yunnan 650093, China; 
    3. Key Lab of Vacuum Metallurgy for Nonferrous Metal of Yunnan Province, Kunming, Yunnan 650093, China
  • Received:2017-01-12 Revised:2017-02-12 Online:2017-08-20 Published:2017-08-16
  • Contact: LI Yi-fu 29376154@qq.com

PDF

摘要： 采用真空蒸馏法从锡锌合金粉中分离锡和锌，考察了还原剂、蒸馏温度、蒸馏时间对锡、锌直收率的影响. 结果表明，采用活性炭作还原剂，在蒸馏温度1373 K、蒸馏时间30 min、原料质量100 g、活性炭6 g的条件下，锡和锌的直收率分别为82.40%和83.62%，残留物中锡纯度为99.31%，挥发物中锌纯度为99.58%. 真空条件下，锡富集在液相残留物中，锌富集在气相挥发物中. 锡锌合金粉中SnO2与ZnO反应，产物为锡酸锌. 真空条件下还原SnO2和ZnO比标准状态下更具优越性.

关键词: 锡锌合金粉, 真空蒸馏, 回收Sn、Zn, 直收率

Abstract: Effects of reducing agent, distillation temperature and distillation time on recycling tin and zinc from Sn?Zn alloy powders were investigated by using a vacuum distillation method. The results demonstrated that the direct yield of tin and zinc can respectively reach to 82.40% and 83.62%, the purity of tin in the residue was 99.31% and the purity of zinc in volatile was 99.58% after using activated carbon as reducing agent under the optimized conditions with distillation temperature of 1373 K, distillation time of 30 min, 100 g raw material and 6 g activated carbon. Under vacuum condition, zinc and tin enriched in gas phase and liquid phase, respectively. Tin oxide and zinc oxide reacted in the Sn?Zn alloy, and the zinc stannate was the product, the reduction of tin oxide and zinc oxide were superior under vacuum conditions than that under standard state.

Key words: Sn-Zn alloy powder, Vacuum distillation, Recovery of Sn、Zn, Direct recovery rate