废触媒浸出液中铁镍合金的电沉积  

Electrodeposition of Fe-Ni Alloy in Waste Catalyst Leaching Solution

作　　者：冯振武 路殿坤 邹小平 谢锋 符岩 FENG Zhen-wu;LU Dian-kun;ZOU Xiao-ping;XIE Feng;FU Yan(School of Metallurgy,Northeastern University,Shenyang 110819,China;BGRIMM Technology Group,Beijing 100160,China)

机构地区：[1]东北大学冶金学院,沈阳110819 [2]矿冶科技集团有限公司,北京100160

出　　处：《有色金属（冶炼部分）》2022年第8期92-97,共6页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家重点研发计划项目(2020YFC1909704)。

摘　　要：以人造金刚石废触媒的硫酸浸出液为基础,采用L_(16)(4^(5))正交试验方案,在1200 C恒定通电量下,进行直流静态电解沉积Fe-Ni合金,研究了各工艺参数对电沉积电流效率、镀层镍质量分数,以及Ni、Fe析出的分电流密度的影响规律,并以电流效率为主要指标优化得出最优工艺参数。结果表明,对电流效率影响因素由大到小的顺序为镀液pH>电流密度>温度>糖精钠浓度>硫脲浓度。最优工艺参数为平均电流密度500 A/m^(2)、温度45℃、pH=3.55、糖精钠浓度3 g/L、硫脲浓度0.15 g/L。最优条件验证试验结果表明了正交试验结果的可靠性。Based on sulfuric acid leaching solution of spent synthetic diamond catalyst,the DC static electrolytic deposition of Fe-Ni alloy was carried out under 1200 C constant charge by using L_(16)(4^(5))orthogonal experimental scheme.Effects of process parameters on electrodeposition current efficiency,nickel mass fraction and partial current density of Ni and Fe precipitation were studied,and the optimal process parameters were obtained by taking current efficiency as the main index.The results show that the order of influencing factors on current efficiency is pH value>current density>temperature>saccharin sodium concentration>thiourea concentration.The optimum process parameters include average current density of 500 A/m^(2),temperature of 45℃,pH value of 3.55,sodium saccharin concentration of 3 g/L,and thiourea concentration of 0.15 g/L.The results of optimal conditions verify the reliability of orthogonal test result.

关 键 词：废触媒 电沉积 铁镍合金 电流效率 分电流密度 

分 类 号：TF803.2[冶金工程—有色金属冶金]