机械活化强化硫酸锌溶液中锌粉净化除镉
作者:
作者单位:

1.昆明理工大学;2.云南驰宏锌锗股份有限公司;3.四川盛屯锌锗科技有限公司;4.昆明理工大学,冶金与能源工程学院

中图分类号:

TF819.2

基金项目:

国家自然科学基金(52164039);云南省科技厅重大科技专项计划项目(202202AG050025);云南省应用基础研究计划项目(202001AT070079)


Mechanical activation strengthens the purification of cadmium from zinc powder in zinc sulfate solution
Author:
Affiliation:

1.Kunming University of Science and Technology;2.Yunnan Chihong Zinc Germanium Co., Ltd;3.Sichuan Shengtun Zinc Germanium Technology Co., Ltd;4.School of Metallurgical and Energy Engineering, Kunming University of Science and Technology

Fund Project:

National Natural Science Foundation of China (52164039); Major Science and Technology Special Program of Yunnan Provincial Department of Science and Technology(202202AG050025); Yunnan Provincial Applied Basic Research Program(202001AT070079)

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    摘要:

    锌粉单耗高和净化除镉渣中镉含量低是硫酸锌溶液锌粉置换除镉存在的共性难题,其核心原因是锌粉被产物层包裹降低其反应活性。基于此提出了机械活化强化硫酸锌溶液两级锌粉逆流置换除镉新方法,一级添加较低系数的锌粉产出高镉品位的净化渣,二级添加较高系数的锌粉,以控制硫酸锌溶液中镉达到溶液净化质量要求。研究结果表明,在总锌粉添加系数为1.02、反应温度60℃、反应时间60min的条件下,其中当一级锌粉添加系数为0.9,二级锌粉添加系数为1.2时,一级净化后液中镉浓度由反应前的1530mg/L降低至60~70 mg/L,一级净化产出的镉渣中镉含量富集至81.54%,锌含量小于10%;二级净化后液中镉浓度降低至2~5 mg/L,净化渣中的镉含量为16%,锌含量为55%。一级净化渣主要物相为单质镉,二级净化渣的主要物相是未反应的锌和部分单质镉。与传统一次净化工艺相比,通过流体的剪应力和机械活化作用,破坏了锌粉表面的包裹层,消除了锌粉表面的包裹现象,提高了锌粉利用效率,降低了锌粉消耗,提高了净化渣中的镉含量。

    Abstract:

    High single consumption of zinc powder and low cadmium content in purified cadmium removal residue are common problems in zinc sulfate solution zinc powder replacement for cadmium removal, and the core reason is that zinc powder is wrapped by the product layer to reduce its reactivity.Based on this, a new method for countercurrent replacement of two-stage zinc powder in enhanced zinc sulfate solution by mechanical activation was proposed, and zinc powder with a lower coefficient was added to produce advanced cadmium in the first stage, and zinc powder with a higher coefficient was added in the second stage to control the cadmium content in zinc sulfate solution to meet the quality requirements of solution purification. The results show that under the conditions of total zinc powder addition coefficient of 1.02, reaction temperature of 60°C and reaction time of 60min, when the addition coefficient of primary zinc powder is 0.9 and the addition coefficient of secondary zinc powder is 1.2, the concentration of cadmium in the liquid after primary purification is reduced from 1530mg/L before reaction to 60~70 mg/L, and the cadmium content in the cadmium residue produced by primary purification is enriched to 81.54%, and the zinc content is less than 10%. After secondary purification, the concentration of cadmium in the solution was reduced to 2~5 mg/L, and the cadmium content in the purification residue was 16%, and the zinc content was 55%. The main phase of the primary purification residue is elemental cadmium, and the main phase of the secondary purification residue is unreacted zinc and some elemental cadmium. Compared with the traditional primary purification process, through the shear stress and mechanical activation of the fluid, the wrapping layer on the surface of the zinc powder is destroyed, the wrapping phenomenon on the surface of the zinc powder is eliminated, the utilization efficiency of zinc powder is improved, the consumption of zinc powder is reduced, and the cadmium content in the purification residue is improved.

    参考文献
    [1] 刘永帅, 张旭. 湿法炼锌净化除钴工艺现状及发展趋势[J]. 矿冶, 2012, 21(3): 65-69.LIU Yongshuai, ZHANG Xu. Current situation and development of process 0f purification of cobalt during zinc hydrometallurgy[J]. Mining2012, 21(3): 65-69.
    [2] 王达. 浅析湿法炼锌净化除钴的影响因素[J]. 中国有色冶金, 2012, 41(5): 11-14.WANG Da. Analysis of influencing factors of cobalt removal by wet zinc smelting purification[J]. China Nonferrous Metallurgy, 2012, 41(5): 11-14.
    [3] 吴钧, 曾鹏, 周中华等. 常规两段浸出法提高锌焙烧矿中铜回收率的研究[J]. 铜业工程, 2022(6): 74-78.WU Jun,ZENG Peng,ZHOU Zhonghua,et al. Study on Improving Copper Recovery of Zinc Roasted Ore by Conventional Two-stage Leaching[J]. Copper Engineering,2022(6): 74-78.
    [4] 蒋继穆. 我国锌冶炼现状及近年来的技术进展[J]. 中国有色冶金, 2006(5): 19-23.JIANG Jimu. Current situation of zinc smelting in China and technological progress in recent years[J]. China Nonferrous Metallurgy, 2006(5): 19-23.
    [5] Ping ZHOU, Dong-mei LI, Zhuo CHEN.Mass transfer process in replacement-column purification device in ?? zinc hydrometallurgy[J]. Transactions of Nonferrous Metals Society of China, 2014, 24(8), 2660-2664
    [6] 李剑利. 海绵镉置换过程中的生产控制[J]. 有色矿冶, 2013, 29(1): 39-41.LI Jianli. Production control during cadmium replacement of sponge[J]. Nonferrous Mining and Metallurgy, 2013, 29(1): 39-41.
    [7] 肖泓,甄勇,李春林,等. 硫酸锌溶液锌粉逆流置换除镉及直接制备海绵镉[J]. 有色金属工程,2023,13(5):53-60XIAO Hong, ZHEN Yong, LI Chunlin, et al. Countercurrent Replacement of Zinc Powder in Zinc Sulfate Solution for Cadmium Removal and Direct Preparation of Cadmium Sponge[J]. Nonferrous Metals Engineering,2023,13(5):53-60
    [8] 杨晓冬, 张新智, 杨金勇. 锌浮渣循环利用除镉的探索研究[J]. 世界有色金属, 2019(23): 5-6.YANG Xiaodong,ZHANG Xinzhi, YANG Jinyong. Study on the recycling of zinc dross to remove cadmium[J]. World Nonferrous Metals, 2019(23): 5-6.
    [9] 廉彩会, 姜仕发, 董凯等. 锌浮渣处理的研究与实践[J]. 中国有色冶金, 2013, 42(06): 23-24+51.Lian Caihui, Jiang Shifa, Dong Kai, et al. Research and practice of zinc dross treatment[J]. China Nonferrous Metallurgy, 2013, 42(06): 23-24+51.
    [10] 牛文敏, 马高峰, 周冲冲, 郭宁. 锰粉代替锌粉去除硫酸锌溶液中铜镉研究[J]. 湖南有色金属, 2021, 37(02): 32-34.NIU Wenmin, MA Gaofeng, ZHOU Chongchong, GUO Ning. Study on removal of copper cadmium from zinc sulfate solution by manganese powder instead of zinc powder[J]. Hunan Nonferrous Metals, 2021, 37(02): 32-34.
    [11] 刘洪嶂, 张建学, 彭文彩, 等. 氧化锌烟尘湿法提取过程中金属锰粉除镉的研究[J]. 中国有色冶金, 2019(1): 4.LIU Hongling, ZHANG Jianxue, PENG Wencai, et al. Study on cadmium removal of metal manganese powder during wet extraction of zinc oxide smoke[J]. China Nonferrous Metallurgy, 2019(1): 4.
    [12] Sole K C , Hiskey J B . Solvent extraction characteristics of thiosubstituted organophosphinic acid extractants[J]. Hydrometallurgy, 1992, 30(1-3): 345-365.
    [13] Khaled S. Abou-El-Sherbini and I. M.M. Kenawy and Mohammad A. Hamed and R.M. Issa and R. Elmorsi. Separation and preconcentration in a batch mode of Cd(II), Cr(III, VI), Cu(II), Mn(II, VII) and Pb(II) by solid-phase extraction by using of silica modified with N-propylsalicylaldimine[J]. Talanta, 2002.
    [14] Mellah A , Benachour D. The solvent extraction of zinc and cadmium from phosphoric acid solution by di-2-ethyl hexyl phosphoric acid in kerosene diluent[J]. Chem.eng.process, 2006, 45(8): 684-690.
    [15] Pas V, Dreisinger D B. A fundamental study of cobalt cementation by zinc dust in the presence of copper and antimony additives[J]. Hydrometallurgy, 1996, 43(1-3): 187-205.
    [16] 曾懋华, 奚长生, 彭翠红, 等. 冶锌工业废渣中镉的回收利用[J]. 韶关学院学报, 2003, 24(12): 56-59. DOI:10.3969/j.issn. 1007-5348. 2003. 12.014.ZENG Maohua, XI Changsheng, PENG Cuihong, et al. Recycling of cadmium in zinc smelting industrial waste residue[J].Journal of Shaoguan University, 2003, 24(12): 56-59. DOI:10.3969/j.issn.1007-5348.2003.12.014.
    [17] 何静, 王夏阳, 叶龙刚, 等. 微电流作用下锌板电置换提镉新工艺[J]. 中南大学学报(自然科学版), 2016, 47(3): 711-716.HE Jing, WANG Xiayang, YE Longgang, et al. A new process of electrical replacement for cadmium extraction by zinc plate under micro current[J]. Journal of Central South University(Natural Science Edition), 2016, 47(3): 711-716.
    [18] 林海, 李真, 董颖博, 李冰, 贺银海. 修复钒镉复合污染水体的菌株分离及性能[J]. 中南大学学报(自然科学版), 2021, 52(05): 1418-1426.LIN Hai, LI Zhen, DONG Yingbo, LI Bing, HE Yinhai. Isolation and characterization of bacteria for vanadium and cadmium polluted water remediation[J]. Journal of Central South University(Natural Science Edition), 2021, 52(05): 1418-1426.
    [19] 唐巾尧, 王云燕, 徐慧等. 铜冶炼多源固废资源环境属性的解析[J]. 中南大学学报(自然科学版), 2022, 53(10): 3811-3826.TANG Jinyao, WANG Yunyan, XU Hui, et al. Analysis of resources and environmental attributes of multisource solid wastes from copper smelti[J]. Journal of Central South University(Natural Science Edition), 2022, 53(10): 3811-3826.
    [20] 陈子罗, 张建良, 刘征建等. 含锌粉尘团块脱锌行为研究[J]. 中南大学学报(自然科学版), 2017, 48(07): 1704-1711.CHEN Ziluo, ZHANG Jianliang, LIU Zhengjian, et al. Research on dezincification of zinc-bearing dusts composite briquettes[J]. Journal of Central South University(Natural Science Edition), 2017, 48(07): 1704-1711.
    [21] 王云燕, 何紫彤, 唐巾尧等. 铜冶炼脱硫石膏渣的环境稳定性与重金属释放机制[J]. 中南大学学报(自然科学版), 2023, 54(02): 562-576.WANG Yunyan, HE Zitong, TANG Jinyao, et al. Long-term environmental stability and heavy metals release mechanism of desulfurized gypsum sludge from copper smelter[J]. Journal of Central South University(Natural Science Edition), 2023, 54(02): 562-576.
    [22] 袁贵有. 从铜镉渣中回收镉的试验研究[J]. 有色金属再生与利用, 2006(12):21-22.Yuan Guiyou. Experimental research of recovering cadmium from slag bearing copper and cadmium[J]. Regeneration and Utilization of Nonferrous Metals, 2006(12): 21-22.
    [23] 李秉龙, 银涛, 帅丽芳, 等. 镉污染及其防治对策[J]. 中国保健营养(中旬刊), 2013(7): 790-791.LI Binglong, YIN Tao, SHUAI Lifang, et al. Cadmium pollution and its prevention and control countermeasures[J]. China Health and Nutrition (Zhongshen Journal), 2013(7): 790-791.
    [24] Aghel B, Mohadesi M, Gouran A, Razmegir M. H. Use of modified Iranian clinoptilolite zeolite for cadmium and lead removal from oil refinery wastewater[J]. International Journal of Environmental Science and Technology, 2020, 17(3)
    [25] 汤顺贤, 陈科彤, 万宁, 等. 从铜镉渣中提取海绵镉的试验研究[J]. 矿冶, 2014, 23(5): 65-68.TANG Shunxian, CHEN Ketong, WAN Ning, et al. Study on ext raction of sponge cadmium from copper cadmium slag[J]. Mining and Metallurgy, 2014, 23(5): 65-68.
    [26] 何良惠, 李自强, 李升章等. 从铜镉渣中提取海绵镉的研究[J]. 无机盐工业, 1991(02): 31-35.HE Lianghui, LI Ziqiang, LI Shengzhang, et al. Study on extraction of cadmium sponge from copper cadmium residue[J]. Inorganic Salt Industry, 1991(02): 31-35.
    [27] 阳富强, 吴超. 硫化矿自燃的机械活化机理[J]. 中国有色金属学报(英文版),2013,23(1):276-282.Yang Fuqiang, Wu Chao. The mechanical activation mechanism of spontaneous combustion ore ore ore [J]. China Nonferrous Metal Journal (English version), 2013,23 (1): 276-282.
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  • 收稿日期:2023-12-04
  • 最后修改日期:2023-12-28
  • 录用日期:2024-02-19
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