| 乙酸铵浸出高炉瓦斯灰中的锌 |
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| 引用本文： | 马爱元, 郑雪梅, 张利波, 彭金辉, 李志, 李松. 乙酸铵浸出高炉瓦斯灰中的锌[J]. 环境工程学报, 2018, 12(5): 1547-1556. doi: 10.12030/j.cjee.201803033 |
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| 作者姓名： | 马爱元 郑雪梅 张利波 彭金辉 李志 李松 |
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| 作者单位： | 1.六盘水师范学院化学与材料工程学院，六盘水 553004; 2.昆明理工大学非常规冶金教育部重点实验室，昆明 650093 |
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| 基金项目： | 国家重点基础研究发展计划（973）项目（2014CB643404） 六盘水师范学院2017年度高层次人才科研启动基金资助项目（LPSSYKYJJ201707） 六盘水师范学院重点学科建设项目（LPSSYZDPYXK201708） |
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| 摘 要： | 采用NH3-CH3COONH4-H2O体系进行了高炉瓦斯灰提锌工艺研究。结果表明：控制浸出温度45 °C，总氨浓度5 mol·L-1，液固比5:1，[NH3]/[NH4]+摩尔比1:1，搅拌速度300 r·min-1，浸出时间60 min，锌浸出率达77.79%。FT-IR及ESI-MS分析显示羧酸阴离子能结合Zn离子形成复杂的羧酸盐配合物，添加CH3COONH4能促进锌的溶出，XRD、SEM-EDS表征分析显示浸出渣中残留ZnFe2O4是导致锌浸出率低的限制性因素。
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| 关 键 词： | 高炉瓦斯灰 锌 浸出 NH3-CH3COONH4-H2O体系 |
Leaching zinc from blast furnace dust with ammonium acetate |
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| MA Aiyuan, ZHENG Xuemei, ZHANG Libo, PENG Jinhui, LI Zhi, LI Song. Leaching zinc from blast furnace dust with ammonium acetate[J]. Chinese Journal of Environmental Engineering, 2018, 12(5): 1547-1556. doi: 10.12030/j.cjee.201803033 |
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| Authors: | MA Aiyuan ZHENG Xuemei ZHANG Libo PENG Jinhui LI Zhi LI Song |
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| Affiliation: | 1.School of Chemistry and Materials Engineering, Liupanshui Normol University, Liupanshui 553004, China; 2.Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming University of Science and Technology, Kunming 650093, China |
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| Abstract: | Zinc recovery from blast furnace dust (BFD) in NH3-CH3COONH4-H2O system is investigated. It was found that 77.79% of Zn could be dissolved from the BFD under the conditions of total ammonia concentration of 5 mol·L-1, stirring speed of 300 r·min-1, [NH3]/[NH4]+ of 1:1, liquid-solid ratio of 5:1, leaching temperature of 45 °C and leaching time of 60 min. The results of FT-IR and ESI-MS analysis showed that zinc can combine with the carboxylate anion to form Zn-complexes and promote the dissolution of zinc. Compare with the phase and morphology structure of samples before and after leaching by XRD and SEM-EDS, it is found that ZnFe2O4 is the low zinc leaching rate of the main restrictive factors. |
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| Keywords: | blast furnace dust zinc leaching NH3-CH3COONH4-H2O systerm |
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