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热镀锌渣真空蒸馏回收金属锌的研究

Zinc Recovering from Hot Galvanized Scraps by Vacuum Distillation

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【作者】 韩龙杨斌杨部正戴永年刘大春徐宝强

【Author】 Han Long~(1,2,3*),Yang Bin~(1,2,3),Yang Buzheng~(1,2,3),Dai Yongnian~(1,2,3),Liu Dachun~(1,2,3),Xu Baoqiang~(1,2,3) (1.National Engineering Laboratory for Vacuum Metallurgy,Kunming University of Science and Technology,Kunming 650093,China;2.Vacuum Metallurgy Key Laboratory for Nonferrous Metal of Yunnan Province,Kunming University cf Science and Technology,Kunming 650093,China; 3.Faculty of Material and Metallurgy Engineering,Kunming UniversityOf Science and Technology,Kunming,650093,China)

【机构】 昆明理工大学真空冶金国家工程实验室昆明理工大学云南省有色金属冶金重点实验室昆明理工大学材料与冶金工程学院

【摘要】 随着锌一次资源的减少,如何有效的回收利用热镀锌渣就显得十分重要。本文对热镀锌渣真空蒸馏回收金属锌的原理和工艺进行探讨,理论计算和实验均证实该法的可行性。工业试验表明,控制适当的条件,可以得到含锌大于99.9%的金属锌。采用真空蒸馏法处理热镀锌渣,符合建设资源节约、环境友好型社会的要求。

【Abstract】 A novel technique has been developed to recover zinc metal from industrial wastes-hot galvanized scraps by vacuum distillation.The influence of vacuum distillation conditions,including the distillation temperature,distillation time,and pressure,on the recovery and quality of zinc metal was studied.The zinc recovering technique has been applied to industrial production with the home-built equipment and the newly-developed technology.The results show that it is feasible to recover zinc from galvanized scraps,and that a judicious choice of industrial distillation conditions strongly affects the zinc recovering.The optimized vacuum distillation conditions include a distillation temperature of 1173K,a distillation time of 14 hours at a pressure of 50Pa~100Pa.Zinc metal with purity higher than 99.9%has been recovered with a direct recovering rate up to 93.37%

【关键词】 热镀锌渣真空蒸馏金属锌
【Key words】 Hot galvanizing scrapVacuum distillationMetal zinc
【基金】 国家自然科学基金-云南联合基金(No.U0837604)
  • 【会议录名称】 中国真空学会2008学术年会论文集
  • 【会议名称】中国真空学会2008学术年会
  • 【会议时间】2008-10
  • 【会议地点】中国云南昆明
  • 【分类号】TF813
  • 【主办单位】中国真空学会(Chinese Vacuum Society)
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