废炼油催化剂酸浸液中镍的选择性萃取  

Selective Extraction of Nickel from Acid Leaching Solution of Waste Oil Refining Catalyst

作　　者：张立萍 贾国栋 刘敏福 司文轩 宋凯 ZHANG Liping;JIA Guodong;LIU Minfu;SI Wenxuan;SONG Kai(Qingdao Huicheng Environmental Protection Technology Group Co.,Ltd.,Qingdao 266500,China)

机构地区：[1]青岛惠城环保科技集团股份有限公司,山东青岛266500

出　　处：《湿法冶金》2024年第2期153-157,共5页Hydrometallurgy of China

摘　　要：针对废炼油催化剂酸浸液中的镍,研究了以HBL110为萃取剂进行直接选择性萃取。优化了萃取剂皂化率、萃取剂浓度、萃取平衡时间,确定了萃取与反萃取级数,并进行了实验室多级逆流串联萃取模拟试验及线上流程的连续萃取试验。结果表明:在皂化率40%、HBL110浓度25%、萃取时间10 min条件下,经五级逆流萃取,萃余液中镍质量浓度低于30 mg/L,镍萃取率达98%以上,Al、Fe萃取率低于3%;以75 g/L硫酸对镍负载有机相进行三级逆流反萃取可100%实现镍的反萃取;对废催化剂酸浸液进行线上萃取流程连续运行5 d,萃余液中镍质量浓度稳定在5 mg/L,镍萃取率达99%,反萃取液中镍质量浓度稳定在8 g/L,镍反萃取率为100%,有机相可以实现有效的循环再利用。In order to recover Ni from acid leaching solution of waste oil refining catalyst,HBL110 was used as extractant to extract nickel directly and selectively.The saponification rate of extractant,extractant concentration and extraction equilibrium time were optimized,the extraction and de extraction stages were confirmed,and the multi-stage countercurrent series extraction simulation test and the continuous running of the on-line process were carried out.The results show that under the conditions of saponification rate of 40%,HBL110 concentration of 25%and extraction time of 10 min,the mass concentration of nickel in the raffinate is less than 30 mg/L,the extraction efficiency of nickel is more than 98%,and the extraction rate of Al and Fe is less than 3%.The three stage countercurrent extraction of nickel supported organic phase with 75 g/L sulfuric acid can achieve 100%back extraction of nickel supported organic phase.The on-line extraction process of the acid leaching solution of the waste catalyst is run continuously for 5 days,the nickel concentration in the raffinate is stable at 5 mg/L,and the extraction efficiency of nickel can reach 99%.The concentration of nickel in the back extraction solution is stable at 8 g/L,and the back extraction rate of nickel is 100%.The organic phase can be effectively recycled.

关 键 词：催化剂 酸浸液 镍 萃取 逆流 反萃取 皂化 

分 类 号：TF815[冶金工程—有色金属冶金] TF804.2[环境科学与工程—环境工程] X742