有机添加剂对硫酸盐体系电积锌的影响  

Effects of organic additives on zinc electrowinning in zinc sulfate electrolyte

作　　者：满东旭 籍琪 周应平 冷和 陈步明 罗枫[2] 黄惠 郭忠诚 MAN Dongxu;JI Qi;ZHOU Yingping;LENG He;CHEN Buming;LUO Feng;HUANG Hui;GUO Zhongcheng(Kunming Science&Technology Hengda Technology Co.,Ltd.,Kunming 650106,China;Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China;Yunnan Metallurgical Electrode Materias Engineering Technology Research Center,Kunming 650106,China)

机构地区：[1]昆明理工恒达科技股份有限公司,云南昆明650106 [2]昆明理工大学冶金与能源工程学院,云南昆明650093 [3]云南省冶金电极材料工程技术研究中心,云南昆明650106

出　　处：《电镀与涂饰》2022年第21期1525-1530,共6页Electroplating & Finishing

基　　金：国家自然科学基金(51563829,52063828,22002054);云南省技术创新人才计划项目(2019HB111);紫金矿业集团股份有限公司紫金山金铜矿横向科技开发项目(KKK0202152047)。

摘　　要：采用含有Zn^(2+)50 g/L和浓硫酸150 g/L的基础电解液,在温度38℃、电流密度500 A/m^(2)的条件下电积锌6 h。研究了明胶、乙二醇、FS-101抑雾剂等3种有机添加剂单独使用或复配使用时对电积锌过程中槽电压、电流效率、能耗和阴极极化行为的影响。通过扫描电镜(SEM)和X射线衍射(XRD)分析了所得锌的微观形貌和晶相结构。结果表明,电解液同时添加10 mg/L明胶和10 mg/L FS-101抑雾剂时电流效率可达96.69%,能耗为2582.3 kW·h/t,所得锌细致、均匀,表面平整,晶面取向以(101)为主。Zinc electrowinning was conducted in an electrolyte mainly composed of Zn^(2+)50 g/L and concentrated sulfuric acid 150 g/L at temperature 38℃ and current density 500 A/m^(2) for 6 h.The effect of the addition of gelatin,ethylene glycol,and FS-101 acid mist suppressor individually and two or all of them together to the electrolyte on the cell voltage,current efficiency,energy consumption,and cathodic polarization behavior during the process of zinc electrowinning was studied.The micromorphology and phase structure of the zinc deposit were analyzed by scanning electron microscopy(SEM)and Xray diffraction(XRD).The results showed that the current efficiency could be up to 96.69%and the energy consumption was 2582.3 kW·h/t when 10 mg/L of gelatin and 10 mg/L of FS-101 acid mist suppressor were used in combination,and the zinc deposit was compact,uniform,and smooth with a preferred orientation of(101)crystal plane.

关 键 词：电积锌 有机添加剂 电流效率 能耗 酸雾抑制剂 

分 类 号：TQ153.15[化学工程—电化学工业]