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某进口锰矿石主要成分为FeMn_2O4,Mn为+3价，在酸性条件下自身歧化为+2价及+4价，而Mn4+无法直接进入浸出液，需加入还原剂将其还原为可溶的Mn2+。本文以硫铁矿为还原剂，考察了硫酸浓度、硫铁矿掺量、反应温度、反应时间对锰浸出率的影响，并对其浸出动力学进行了研究。结果表明：最佳浸出条件为液固比5∶1、硫酸浓度2 mol/L、硫铁矿掺量30%、反应温度90℃、反应时间6 h,在此条件下的锰浸出率高达96.83%;采用液-固未反应收缩核模型分析浸出过程，发现其反应速率受化学反应控制，活化能为42.232 8 kJ/mol。研究成果可为锰铁尖晶石的高效利用提供技术参考。
Abstract：The main component of an imported manganese ore is FeMn_2O4, the valence of Mn is +3, and it is disproportionated into +2 and +4 valence under acidic conditions.However, Mn4+ cannot enter the leaching solution directly, and it needs to be reduced to soluble Mn2+ by adding a reducing agent. In this paper, the effects of sulfuric acid concentration, pyrite content, reaction temperature and reaction time on manganese leaching rate were investigated by using pyrite as reducing agent, and the leaching kinetics was studied. The results show that the optimum lea-ching conditions are liquid-solid ratio of 5∶1, acid concentration of 2 mol/L, pyrite content of 30%, reaction temperature of 90 ℃ and reaction time of 6 h. Under these conditions, the leaching rate of manganese is as high as 96.83%. The liquid-solid unreacted shrinking core model was used to analyze the leaching process. It was found that the reaction rate was controlled by chemical reaction, and the activation energy was 42.232 8 kJ/mol. The research results can provide technical reference for the efficient utilization of manganite spinel.
[1] 冯宏业，柳群义，王安建，等.我国锰矿资源供需现状分析与建议：2023年中国地球科学联合学术年会论文集[C].北京：北京伯通电子出版社，2023.Feng H Y,Liu Q Y,Wang A J,et al.Analysis and suggestions on the current supply and demand situation of manganese ore resources in China:Proceedings of the 2023 China Geoscience Joint Academic Annual Conference[C].Beijing:Beijing Botong Electronic Publishing House,2023.
[2] Ren H,Liu M,Wang Z G,et al.Security of manganese resources and industrial chain in China[J].Chinese Journal of Engineering Science,2022,24(3):20.
[3] 何鸿.锰消费规律探讨及中国未来锰需求预测[J].中国矿业，2020,29(5):7-11.He H.Analysis of the law of manganese consumption and a prediction about China’s manganese demand[J].China Mining Magazine,2020,29(5):7-11.
[4] 王宗元，孙聪伍，罗太旭，等.氧化型锰矿石的生物成因及其硫化产物浸出-电解工艺优化研究[J].中国锰业，2025,43(2):121-126.Wang Z Y,Sun C W,Luo T X,et al.Biogenesis of oxidised Mn ores and optimised leaching-electrowinning of sulphidised products[J].China’s Manganese Industry,2025,43(2):121-126.
[5] 张弘弢.坚持“富矿精开”资源优势加速转化为产业优势[N].贵州日报，2025-01-01(T04).Zhang H T.Adhere to the "rich ore fine open" resource advantages to accelerate the transformation into industrial advantages[N].Guizhou Daily,2025-01-01(T04).
[6] 严文泽，刘思为，杨柳毅，等.锰资源现状及开发利用技术进展[J].中国锰业，2024,42(2):16-21.Yan W Z,Liu S W,Yang L Y,et al.Current status and technological advances in development and utilization of manganese resources[J].China Manganese Industry,2024,42(2):16-21.
[7] 程湘，胡鹏，张海坤，等.锰矿主要类型、分布特点及开发现状[J].中国地质，2021,48(1):102-119.Cheng X,Hu P,Zhang H K,et al.The main types,distribution and current development of manganese ore deposits[J].Geology in China,2021,48(1):102-119.
[8] 程超颖.寻“锰”之路任重道远[J].中国海关，2024(12):74-75.Cheng C Y.There is a long way to go to find "manganese"[J].China Customs,2024(12):74-75.
[9] 戴梓谦.2023年中国锰矿石需求预测[J].中国锰业，2023,41(2):72.Dai Z Q.Demand forecast of manganese ore in China in 2023[J].China Manganese Industry,2023,41(2):72.
[10] 谢戈，邹雯丽.2023年锰矿石及其衍生产品市场动态[J].中国锰业，2024,42(5):9-14.Xie G,Zou W L.Market dynamics of manganese ore and its derivative products in 2023[J].China’s Manganese Industry,2024,42(5):9-14.
[11] 赵旭光，冯宏业，杜保华，等.我国锰矿资源对外依赖的挑战与应对策略：2023年中国地球科学联合学术年会论文集[C].北京：北京伯通电子出版社，2023.Zhao X G,Feng H Y,Du B H,et al.Challenges and countermeasures for China’s manganese ore resource external dependence:Proceedings of the 2023 China Geoscience Joint Academic Annual Conference[C].Beijing:Beijing Botong Electronic Publishing House,2023.
[12] 何腾，申培伦，毛玉强，等.氧化锰矿湿法浸出还原剂研究进展[J].中国有色金属学报，2025,35(12):4367-4386.He T,Shen P L,Mao Y Q,et al.Research progress on reducing agents for hydrometallurgical leaching of manganese oxide ores[J].The Chinese Journal of Nonferrous Metals,2025,35(12):4367-4386.
[13] Moro K,Haubrich F,Martin M,et al.Reductive leaching behaviour of manganese and cobalt phases in laterite and manganese ores[J].Hydrometallurgy,2023,220:106101.
[14] 邹廷信，聂程，毛拥军.某进口软锰矿还原焙烧、浸出实验研究[J].矿冶工程，2022,42(3):115-117.Zou T X,Nie C,Mao Y J.Experimental study on reduction roasting and leaching of imported pyrolusite[J].Mining and Metallurgical Engineering,2022,42(3):115-117.
[15] 杨春元，王家伟，王松，等.乙酸/单宁酸还原浸出某低品位软锰矿[J].矿产保护与利用，2022,42(5):119-125.Yang C Y,Wang J W,Wang S,et al.Reductive leaching of manganese from certain low-grade pyrolusite with tannic acid and acetic acid[J].Conservation and Utilization of Mineral Resources,2022,42(5):119-125.
[16] 卢友志，王雅梦，赵义.核桃壳还原浸出软锰矿的动力学[J].有色金属(冶炼部分),2021(12):28-34.Lu Y Z,Wang Y M,Zhao Y.Reductive leaching kinetics of pyrolusite with walnut shell[J].Nonferrous Metals (Extractive Metallurgy),2021(12):28-34.
[17] 卢友志，苏李敏，赵义.单宁酸-硫酸体系浸出氧化锰矿中锰的研究[J].无机盐工业，2022,54(6):84-89.Lu Y Z,Su L M,Zhao Y.Study on leaching of manganese from manganese dioxide ore with tannic acid-sulfuric acid system[J].Inorganic Chemicals Industry,2022,54(6):84-89.
[18] 刘东杰.微波强化玉米酒糟湿法浸出软锰矿的研究[D].昆明：昆明理工大学，2023.Liu D J.Study on microwave-enhanced wet leaching of pyrolusite using corn distiller's grains[D].Kunming:Kunming University of Science and Technology,2023.
[19] 姜远.茶叶还原浸出低品位锰矿的研究[D].南宁：广西民族大学，2024.Jiang Y.Study on reductive leaching of low-grade manganese ore using tea leaves[D].Nanning:Guangxi Minzu University,2024.
[20] 马云聪，佘宗华，王怡圣，等.软锰矿-硫铁矿两矿法浸出实验[J].中国锰业，2024,42(6):54-57.Ma Y C,She Z H,Wang Y S,et al.Experimental investigation on the leaching of pyrolusite-pyrite dual-ore technique[J].China Manganese Industry,2024,42(6):54-57.
[21] 陈晓亮，王海峰，尤晓宇，等.两矿法浸出电解锰阳极渣中锰的研究[J].矿冶工程，2021,41(3):92-94.Chen X L,Wang H F,You X Y,et al.Leaching of manganese in anode residue from manganese electrolysis[J].Mining and Metallurgical Engineering,2021,41(3):92-94.
[22] 郑宇，李炳震，刘长根，等.软锰矿-硫铁矿协同浸出实验研究[J].矿冶工程，2022,42(5):103-105.Zheng Y,Li B Z,Liu C G,et al.Simultaneous leaching of manganese from pyrolusite and pyrite[J].Mining and Metallurgical Engineering,2022,42(5):103-105.
[23] 陈国木，李国峰，王秋银，等.锌精矿焙砂浸出过程中硅的行为及控制措施[J].湿法冶金，2014,33(6):433-437.Chen G M,Li G F,Wang Q Y,et al.Control measures and behavior of silicon during leaching process of zinc roasted ore[J].Hydrometallurgy of China,2014,33(6):433-437.
[24] Du J J,Zhang Y Q,Lu J J,et al.Mechanism of enhanced enrichment manganese from manganese ore-pyrite under microwave heating:process optimization and kinetic studies[J].Colloids and Surfaces A:Physicochemical and Enginee-ring Aspects,2023,656:130534.
[25] Liu D J,Gao L,Chen G,et al.Enhancement effects of distiller’s dried grains as reducing agents on the kinetics and leaching of pyrolusite from manganese ore[J].Journal of Materials Research and Technology,2022,19:4270-4281.
基本信息:
DOI：10.16283/j.cnki.hgkwyjg.2026.08.003
中图分类号:TF792
引用信息:
[1]刘馨阳,王海峰,王家伟,等.基于两矿法的某进口锰矿浸出效果及其动力学研究[J].化工矿物与加工,2026,55(08):14-21.DOI:10.16283/j.cnki.hgkwyjg.2026.08.003.
基金信息:
贵州省科技计划重点支撑项目(黔科合支撑[2022]重点020); 2025年度中央引导地方科技发展资金项目(黔科合中引地[2025]026); 铜仁市重大科技项目(铜仁市科技计划[2024]93)
2026-08-20
2026-08-20