An Improved Understanding of Chalcopyrite Leaching Mechanisms: The Influence of Anisotropic Crystal Planes

被引:0
|
作者
Wei, Zhenlun [1 ]
Yang, Xu [1 ]
Li, Wanqing [1 ]
Ma, Qiang [1 ]
Wu, Xiaoyong [1 ]
Li, Yubiao [1 ,2 ]
机构
[1] Wuhan Univ Technol, Sch Resources & Environm Engn, Wuhan 430070, Peoples R China
[2] Wuhan Univ Technol, Minist Educ, Key Lab Green Utilizat Crit Nonmet Mineral Resourc, Wuhan 430070, Peoples R China
关键词
chalcopyrite; leaching; anisotropic crystal planes; density functional theory; mechanisms; RAY PHOTOELECTRON-SPECTROSCOPY; DENSITY-FUNCTIONAL THEORY; FERRIC ION; SURFACE; PYRITE; HYDROMETALLURGY; ADSORPTION; OXIDATION; KINETICS; PASSIVATION;
D O I
10.3390/min13111461
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
Chalcopyrite (CuFeS2) particles, exposing anisotropic crystal planes during the grinding process, possess comprehensive surface properties that affect their leaching behaviors. In order to investigate the influence of anisotropic crystal planes on the leaching mechanisms, CuFeS2 particles with anisotropic crystal planes were produced by employing three-head laboratory grinder mill (TM), rod mill (RM), and ball mill (BM) and were then leached in a sulfuric acid solution at pH = 1. Based on the XRD, SEM, XPS, and simulation results, (112), (102), (312), (110), (116), (100), and (001) planes were mainly exposed on the CuFeS2 surface during the crushing and grinding process. In addition, fewer (112), (102), (312), and (110) planes but more (116), (100), and (001) planes were exposed on the CuFeS2 samples in the TM method than in the RM and BM methods. Since the leaching rates were in the order of (001) > (100) > (116) > (110) > (312) > (102) > (112) planes, the Cu extractions followed an order of TM > RM > BM. This study, therefore, provides an excellent theoretical basis for the effect of anisotropic crystal planes on CuFeS2 leaching, further improving the understanding of CuFeS2 leaching mechanisms.
引用
收藏
页数:12
相关论文
共 50 条
  • [31] Torsion of cylindrically anisotropic nano/microtubes of the cubic crystals obtained by rolling the crystal planes (011)
    Goldstein, R. V.
    Gorodtsov, V. A.
    Lisovenko, D. S.
    LETTERS ON MATERIALS, 2016, 6 (04): : 249 - 252
  • [32] The Study of Mechanisms and Morphologies of Anisotropic Salol Crystal Growth in Melt
    林晶
    金蔚青
    何崇藩
    人工晶体学报, 1988, (Z1) : 161 - 161
  • [33] Anisotropic ionic transportation performances of (100) and (112) planes in MAPbI3 single crystal
    Zuo, Zhiyuan
    Ding, Jianxu
    Li, Yongfu
    Zhao, Ying
    Du, Songjie
    MATERIALS RESEARCH BULLETIN, 2018, 99 : 466 - 470
  • [34] Understanding the mechanisms of electroplasticity from a crystal plasticity perspective
    Lahiri, Arka
    Shanthraj, Pratheek
    Roters, Franz
    MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING, 2019, 27 (08)
  • [35] The impact of light on understanding the mechanism of dissolution and leaching of sphalerite (ZnS), pyrite (FeS2) and chalcopyrite (CuFeS2)
    Crundwell, F. K.
    MINERALS ENGINEERING, 2021, 161
  • [36] Influence of External Factors on Anisotropic Growth Habit of ZnO Crystal
    Xie, Juan
    Zhao, Wei
    Bian, Li
    Feng, Rubin
    Xie, Yan
    MANUFACTURING PROCESSES AND SYSTEMS, PTS 1-2, 2011, 148-149 : 1440 - 1443
  • [37] Improved understanding of physical defect mechanisms using fault simulation
    Garyet, TC
    Dickson, N
    MICROELECTRONICS AND RELIABILITY, 1997, 37 (01): : 121 - 135
  • [38] Understanding the mechanisms of improved asthma control following sinus surgery
    Ananth, Sachin
    JOURNAL OF ASTHMA, 2021, 58 (09) : 1194 - 1195
  • [39] Understanding the mechanisms involved in the improved insulin secretory response of pseudoislets
    Cornell, D. A.
    Arden, C.
    DIABETIC MEDICINE, 2017, 34 : 45 - 45
  • [40] Improved understanding of physical defect mechanisms using fault simulation
    Garyet, Terry C.
    Dickson, Nicholas
    Microelectronics Reliability, 1997, 37 (01): : 121 - 135