Volume 36 Issue 3
May. 2022
Turn off MathJax
Article Contents
CAI Gaipin, HAO Shuhao, YU Cheng, XUAN Lyuwei. Fracture Characteristics of Ore Components Interface Based on Representative Volume Unit Model[J]. Chinese Journal of High Pressure Physics, 2022, 36(3): 035302. doi: 10.11858/gywlxb.20210896
Citation: CAI Gaipin, HAO Shuhao, YU Cheng, XUAN Lyuwei. Fracture Characteristics of Ore Components Interface Based on Representative Volume Unit Model[J]. Chinese Journal of High Pressure Physics, 2022, 36(3): 035302. doi: 10.11858/gywlxb.20210896

Fracture Characteristics of Ore Components Interface Based on Representative Volume Unit Model

doi: 10.11858/gywlxb.20210896
  • Received Date: 03 Nov 2021
  • Rev Recd Date: 26 Nov 2021
  • Accepted Date: 03 Dec 2021
  • Issue Publish Date: 30 May 2022
  • The fracture characteristic of mineral component interface refers to the stress, strain and other processes generated by the bonding interface under the action of external load. It is of great significance for studying the dissociation of component minerals and improving the efficiency of ore crushing. To further study the characteristics of mineral accumulation and non-uniform distribution of useful minerals in the ore, the internal rock facies analysis and the mineral interface in-situ loading experiments were carried out. Based on these two experiments, the non-linear, multi-scale modeling platform DIGIMAT was employed to construct the coincident group. The representative volume element (RVE) model of the mineral microstructure is divided, and the in-situ crushing simulation of the ore RVE model is carried out through the DIGIMAT-ABAQUS coupling. It is suggested by these results that: (1) The useful minerals in the studied wolframite ore are distributed in granular form inside the ore, mainly in the quartz mineral and the bonding interface with the siliceous rock mineral. (2) The mechanical properties of the bonding interface with different components are related to the physical properties and morphological characteristics of the constituent minerals. The minimum fracture stress range of the quartz-siliceous rock interface is 1.1785–1.4820 GPa, and the minimum fracture stress range of the quartz-tungsten interface is 1.3355–1.5420 GPa; (3) Although the peak stress of ore crushing has no obvious effect when the loading rate is 0.010 or 0.005 kN/s, it has a greater impact on the internal deformation of the ore. When the loading rate is 0.010 kN/s, the stress suddenly decreased and constantly fluctuated during the strengthening stage. (4) The damage caused by in-situ loading mainly occurs at the boundary of the loading area. The fracture mechanical characteristics of quartz minerals in the two sets of interfaces are greater than that of tungsten minerals and siliceous rock minerals. Quartz minerals in the interface composition minerals are preferentially formed and destroyed.

     

  • loading
  • [1]
    张成良, 刘磊, 王超. 高等岩石力学及工程应用 [M]. 长沙: 中南大学出版社, 2016.

    ZHANG C L, LIU L, WANG C. Advanced rock mechanics and engineering application [M]. Changsha: Central South University Press, 2016.
    [2]
    GAUDIN A M. Principles of mineral dressing [M]. New York: McGraw-Hill, 1939: 70−89.
    [3]
    王雅蓉, 周乐光. 相界特征对矿物单体解离度的影响 [J]. 东北大学学报(自然科学版), 1996, 17(3): 88–92.

    WANG Y R, ZHOU L G. Effects of interfacial characteristics on mineral liberation [J]. Journal of Northeastern University (Natural Science), 1996, 17(3): 88–92.
    [4]
    刘建远, 应平. 颗粒床压载粉碎对某硫化铜矿石矿物解离的影响 [J]. 有色金属(选矿部分), 2018(5): 81–87. doi: 10.3969/j.issn.1671-9492.2018.05.016

    LIU J Y, YING P. Impact of comminution by particle-bed compressive stressing on mineral liberation of a copper sulfide ore [J]. Nonferrous Metals (Mineral Processing Section), 2018(5): 81–87. doi: 10.3969/j.issn.1671-9492.2018.05.016
    [5]
    SUN W J, WANG L B, WANG Y Q. Mechanical properties of rock materials with related to mineralogical characteristics and grain size through experimental investigation: a comprehensive review [J]. Frontiers of Structural and Civil Engineering, 2017, 11(3): 322–328. doi: 10.1007/s11709-017-0387-9
    [6]
    杨小彬, 周杰, 宋义敏, 等. 循环加载岩石界面滑移位移演化特征试验研究 [J]. 煤炭学报, 2019, 44(10): 3041–3048. doi: 10.13225/j.cnki.jccs.2018.1579

    YANG X B, ZHOU J, SONG Y M, et al. Evolution characteristics of sliding displacement of rock interface under cyclic loading [J]. Journal of China Coal Society, 2019, 44(10): 3041–3048. doi: 10.13225/j.cnki.jccs.2018.1579
    [7]
    ALNEASAN M, BEHNIA M, BAGHERPOUR R. Analytical investigations of interface crack growth between two dissimilar rock layers under compression and tension [J]. Engineering Geology, 2019, 259: 105188. doi: 10.1016/j.enggeo.2019.105188
    [8]
    蔡改贫, 赵小涛. 基于细观力学的矿石颗粒破碎特性研究 [J]. 应用力学学报, 2020, 37(4): 1792–1797. doi: 10.11776/cjam.37.04.B097

    CAI G P, ZHAO X T. Study on the fracture characteristics of ore particles based on micromechanics [J]. Chinese Journal of Applied Mechanics, 2020, 37(4): 1792–1797. doi: 10.11776/cjam.37.04.B097
    [9]
    王光勇, 余锐, 马东方, 等. 饱水细砂岩动态抗拉与抗压强度试验对比研究 [J]. 高压物理学报, 2020, 34(4): 044101. doi: 10.11858/gywlxb.20190857

    WANG G Y, YU R, MA D F, et al. Comparative study on dynamic tensile and compressive strength of the saturated fine sandstone [J]. Chinese Journal of High Pressure Physics, 2020, 34(4): 044101. doi: 10.11858/gywlxb.20190857
    [10]
    纪杰杰, 李洪涛, 吴发名, 等. 冲击荷载作用下岩石破碎分形特征 [J]. 振动与冲击, 2020, 39(13): 176–183, 214. doi: 10.13465/j.cnki.jvs.2020.13.026

    JI J J, LI H T, WU F M, et al. Fractal characteristics of rock fragmentation under impact load [J]. Journal of Vibration and Shock, 2020, 39(13): 176–183, 214. doi: 10.13465/j.cnki.jvs.2020.13.026
    [11]
    蔡改贫, 宣律伟, 张雪涛, 等. 多尺度内聚颗粒模型破碎过程研究 [J]. 岩土力学, 2020, 41(6): 1809–1817. doi: 10.16285/j.rsm.2019.1218

    CAI G P, XUAN L W, ZHANG X T, et al. Investigation into the crushing process in multi-scale cohesive particle model [J]. Rock and Soil Mechanics, 2020, 41(6): 1809–1817. doi: 10.16285/j.rsm.2019.1218
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Figures(11)  / Tables(6)

    Article Metrics

    Article views(1048) PDF downloads(24) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return