摘要
围绕铜精炼过程中镍的有效控制与综合回收进行了论述,分别从冶炼流程中镍的分布、火法精炼过程中镍的控制、电解精炼过程中镍的控制、电解精炼过程中硫酸镍回收的提升措施等方面进行了详细阐述。为了提高镍的综合回收率,在火法精炼过程中控制氧含量尽可能低于0.15%,使得镍尽可能以金属形式进入阳极铜板;在电解精炼过程中,要通过降低电流密度,提高电解液温度、流量和净化能力,加大硫酸镍开路量,进而降低电解液镍含量和酸浓度等手段来提高镍回收率;通过提高电解液砷的脱除率、采用自动取样分析和动态调控、结合强化蒸发硫酸镍溶液等多种手段共同作用来进一步提高镍产品的质量和效率。
The effective control and comprehensive recovery of nickel in the copper refining process was discussed,and elaborates in detail on the distribution of nickel in the smelting process,the control of nickel in the pyrometallurgical refining process,the control of nickel in the electrolytic refining process,and the measures to improve the recovery of nickel sulfate in the electrolytic refining process.In order to improve the comprehensive recovery rate of nickel,the oxygen content should be controlled as low as 0.15%during the pyrometallurgical refining process,enabling nickel to enter the anode copper plate in metallic form to the greatest extent possible;During electrolytic refining,the nickel recovery rate can be improved by reducing the current density,elevating the electrolyte temperature,enhancing the flow rate and purification capacity,increasing the open-circuit output of nickel sulfate,and thereby reducing the nickel content and acid concentration of the electrolyte;By improving the removal rate of arsenic in the electrolyte,adopting automatic sampling analysis and dynamic control,and integrating with enhanced evaporation of nickel sulfate solution,multiple methods can be used to further i mprove the quality and efficiency of nickel products.
作者
沐亚玲
曾文斌
秦树辰
杨必文
江克怀
罗福扬
MU Yaling;ZENG Wenbin;QIN Shuchen;YANG Biwen;JIANG Kehuai;LUO Fuyang(Southwest Copper Branch of Yunnan Copper Industry Co.,Ltd.,Kunming 650032,China;BGRIMM Technology Group,Beijing 100160,China)
出处
《有色金属(中英文)》
北大核心
2025年第4期607-613,共7页
Nonferrous Metals
基金
国家重点研发计划项目(2022YFC3901501)。
关键词
铜精炼
火法精炼
电解精炼
镍回收
copper refining
pyrometallurgical refining
electrolytic refining
nickel recovery
