Article(id=1305177731042407376, tenantId=1146029695717560320, journalId=1146120122248306696, issueId=1305177706027578094, articleNumber=null, orderNo=null, doi=10.13355/j.cnki.sfyj.2026.04.014, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1768924800000, receivedDateStr=2026-01-21, revisedDate=1776960000000, revisedDateStr=2026-04-24, acceptedDate=null, acceptedDateStr=null, onlineDate=1789108220110, onlineDateStr=2026-09-11, pubDate=1787155200000, pubDateStr=2026-08-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1789108220110, onlineIssueDateStr=2026-09-11, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1789108220110, creator=13701087609, updateTime=1789108220110, updator=13701087609, issue=Issue{id=1305177706027578094, tenantId=1146029695717560320, journalId=1146120122248306696, year='2026', volume='45', issue='4', pageStart='455', pageEnd='612', issueExtLink='null', onlineDate='null', pubDate='1787155200000', pubDateStr='2026-08-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1789108214146, creator='13701087609', updateTime=1789108456673, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1305178723335037263, tenantId=1146029695717560320, journalId=1146120122248306696, issueId=1305177706027578094, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1305178723335037264, tenantId=1146029695717560320, journalId=1146120122248306696, issueId=1305177706027578094, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=574, endPage=584, ext={EN=ArticleExt(id=1305177731226956753, articleId=1305177731042407376, tenantId=1146029695717560320, journalId=1146120122248306696, language=EN, title=Coupling of Copper and Iron Migration Behavior During Atmospheric Pressure Leaching of High Copper-Nickel Matte, columnId=1152626641181700664, journalTitle=Hydrometallurgy of China, columnName=Experiment Research, runingTitle=null, highlight=null, articleAbstract=

In view of the complex technical problems such as "running muddy" in the thickening system, excessive Cu²⁺ in the solution and poor open circuit of Fe³⁺ in the atmospheric leaching process of high copper nickel matte, the migration behavior and inhibition mechanism of Cu and Fe were systematically revealed by mineralogy, chemistry and reaction kinetics. The mineral analysis system (MLA) was used to clarify the occurrence state and evolution path of raw materials and intermediate slag nickel sulfide (Ni₃S₂), copper nickel sulfide and iron oxide (FeOOH, etc.). The coupling effects of pH, temperature, liquid volume to solid mass ratio, reaction time and initial Cu²⁺ mass concentration on the leaching kinetics and hydrolysis precipitation behavior of Ni, Cu and Fe were investigated by designing systematic single factor and L₉(3⁴) orthogonal experiments. The results show that Fe³⁺ is significantly hydrolyzed at pH>3.0, and the generated Fe(OH)₃ colloid encapsulates the microparticles through electrical neutralization and bridging, which is the direct cause of system stability damage and "running muddy". In addition to direct leaching, Cu²⁺ has a hidden cycle path of "adsorption-coprecipitation", which is the core reason why it is difficult to completely open the circuit. Based on this, a "Fe/Cu synergistic regulation" strategy is proposed. The core of this strategy is to accurately control the initial pH in a narrow window of 2.5–3.0：in this interval, the catalytic effect of Cu²⁺can be used to promote nickel leaching, and the hydrolysis of Fe³⁺ into gel at the initial stage of the reaction can be inhibited to the greatest extent. Combined with orthogonal test optimization, the optimum process conditions are determined as follows：initial pH=2.5-3.0, temperature is 80-85 ℃, liquid mass solid mass ratio is 8/1-9/1, reaction time is 4-5 h. Compared to the traditional process, after applying this collaborative regulation strategy, the total nickel leaching rate of the system increases steadily from approximately 90% to over 93%. The Ni mass concentration in the externally supplied nickel sulfate solution reaches over 105 g/L, while the Cu mass concentration decreases from over 15 g/L to below 3 g/L, and the Fe mass concentration drops from over 5 g/L to below 1 g/L. This method solves the problems of "slurry leakage" and impurity control in industrial production effectively, and provides a solid theoretical basis and engineering practice solution for the precise regulation of the high-nickel concentrate hydrometallurgical process.

, authors=Kangbing YAO, Guiyan YANG, Ganggang YAN, Lei MA, Yuyuan ZHANG, Lijuan ZHANG, authorsList=Kangbing YAO, Guiyan YANG, Ganggang YAN, Lei MA, Yuyuan ZHANG, Lijuan ZHANG, authorCompany=null, correspAuthors=Yuyuan ZHANG, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1305177733026313170, articleId=1305177731042407376, tenantId=1146029695717560320, journalId=1146120122248306696, language=CN, title=高铜镍锍常压浸出过程中铜铁迁移行为的耦合性研究, columnId=1152626641328501305, journalTitle=湿法冶金, columnName=试验研究, runingTitle=null, highlight=null, articleAbstract=

针对高铜镍锍常压浸出过程中浓密系统“跑浑”、溶液Cu²⁺超标及Fe³⁺开路不畅等复合型技术难题，通过矿物学、化学与反应动力学研究，系统揭示了Cu、Fe的迁移行为与抑制机制。采用矿物分析系统（MLA）明确了原料及中间渣硫镍矿（Ni₃S₂）、铜镍硫化物及铁氧化物（FeOOH等）的赋存状态与演化路径。通过设计系统的单因素与L₉（3⁴）正交试验，考察了pH、温度、液固体积质量比、反应时间及初始Cu²⁺质量浓度对Ni、Cu、Fe浸出动力学与水解沉淀行为的耦合影响。研究结果表明：Fe³⁺在pH>3.0时发生显著水解，生成的Fe（OH）₃胶体通过电中和与架桥作用包裹微颗粒，是导致体系稳定性破坏与“跑浑”的直接诱因；Cu²⁺除直接浸出外，更存在“吸附-共沉淀”的隐性循环路径，是其难以彻底开路的核心原因。基于此，提出了“Fe/Cu协同调控”策略，其核心在于将初始pH精准控制在2.5~3.0的狭窄窗口：在此区间内，既能利用Cu²⁺的催化作用促进镍浸出，又可最大限度地抑制Fe³⁺在反应初期水解成胶。结合正交试验优化，确定了最佳工艺条件窗口为：初始pH =2.5~3.0，温度80~85 ℃，液固体积质量比8/1~9/1，反应时间4~5 h。相较于传统工艺，应用此协同调控策略后，系统镍总浸出率由90%左右稳定提升至93%以上，外付硫酸镍溶液中Ni质量浓度达105 g/L以上，Cu质量浓度从15 g/L以上降至3 g/L以下，Fe质量浓度从5 g/L以上降至1 g/L以下。该法有效解决了工业化生产中的“跑浑”与杂质控制难题，为高镍锍湿法冶金过程的精准调控提供了坚实的理论依据与工程实践方案。

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姚康兵（1997—），男，本科，工程师，主要研究方向为有色金属湿法冶金。

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姚康兵（1997—），男，本科，工程师，主要研究方向为有色金属湿法冶金。

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