| 酸性条件下ZnS氧化浸出过程动力学的研究 |
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| 引用本文： | 邓日章,赵天从,钟竹前,梅光贵.酸性条件下ZnS氧化浸出过程动力学的研究[J].中南大学学报(自然科学版),1992(1). |
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| 作者姓名： | 邓日章 赵天从 钟竹前 梅光贵 |
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| 作者单位： | 中南矿冶学院有色冶金系，中南矿冶学院有色冶金系，中南矿冶学院有色冶金系，中南矿冶学院有色冶金系 |
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| 摘 要： | 本文研究了在盐酸溶液中使用二氧化锰作氧化剂氧化浸出ZnS矿过程的动力学,详细考察了温度、搅拌速度、精矿粒度、HCl浓度、FeCl_3浓度和MnO_2量等因素对锌浸出速率的影响。结果指出:浸出过程反应活化能为54.76kJ/mol;HCl和FeCl_3在一定的浓度范围内对锌浸出速率均有影响。浸出过程符合内扩散控制模型,其中反应物H~ (或含H~ 复合离子)和反应产物Fe~(2 ),Zn~(2 )等通过产物硫膜层的传输为整个过程的控制步骤。
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| 关 键 词： | ZnS 湿法冶金 动力学 氧化浸出 |
KINETIC STUDY ON OXIDATIVE DISSOLUTION OF SPHALERITE IN AQUEOUS HYDROCHLORIC ACID SOLUTIONS |
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| Deng Rizang,Zhao Tiancong,Zhong Zhuqian,Mei Guanggui The.KINETIC STUDY ON OXIDATIVE DISSOLUTION OF SPHALERITE IN AQUEOUS HYDROCHLORIC ACID SOLUTIONS[J].Journal of Central South University:Science and Technology,1992(1). |
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| Authors: | Deng Rizang Zhao Tiancong Zhong Zhuqian Mei Guanggui The |
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| Institution: | Deng Rizang;Zhao Tiancong;Zhong Zhuqian;Mei Guanggui The department of Non-ferrous Metallurgy |
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| Abstract: | This paper deals with the kinetics of oxidative dissolution of sphalerite bymanganese dioxide in aqueous hydrochloric acid solutions.The influence of suchfactors as emperature,stirring speeds,particle size of sphalerite,HCl concen-tration,FeCl_3 concentration nd quantities of MnO_2,etc,on the dlissolutionrates of sphalerite has been investigated.The esults indicate that the activationenergy of the dissolution reaction of sphaierite is 54.76 J/mol which is reaso-nable for a rate limiting diffusion of the reaction products of Fe~(2),Zn~(2 ) andthe reaction agents of H~ (or its complex ions)through the reaction productcelemental sulphur)layer,and the concentrations of HCl and FeCl_3 in theirsolutions in ertain range affect the dissolution rates of sphalerite. |
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| Keywords: | ZnS hydrometallurgy kinetics oxidation leach |
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