Comparing strategies for grinding itabirite iron ores in autogenous and semi-autogenous pilot-scale mills

被引：8
|
作者：
Rodrigues, Armando F. d. V. [1 ,2 ]
Delboni, Homero, Jr. [2 ]
Powell, Malcolm S. [3 ]
Tavares, Luis Marcelo [4 ]
机构：
[1] Vale SA, Iron Ore, Dept Mineral Proc, Rio De Janeiro, Brazil
[2] Univ Sao Paulo, Dept Min & Petr Engn, Sao Paulo, Brazil
[3] Univ Queensland, JKMRC SMI, Brisbane, Qld, Australia
[4] Univ Fed Rio De Janeiro COPPE UFRJ, Dept Met & Mat Engn, Rio De Janeiro, Brazil
来源：
MINERALS ENGINEERING | 2021年 / 163卷
关键词：
Autogenous grinding; Iron ore; Itabirite; Pilot plant milling; Semi-autogenous grinding;
D O I：
10.1016/j.mineng.2021.106780
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
High grade iron ore resources are becoming depleted in Brazil, with relatively low-grade ores requiring more intensive comminution for proper liberation of iron minerals, followed by upgrading. Comminution circuits that have been frequently used in the Brazilian iron ore industry in preparation of high-grade iron ores consist of multiple crushing stages followed by ball milling and are known for being highly complex and capital-intensive installations. This work assesses the potential suitability of autogenous (AG) and semi-autogenous (SAG) milling through an extensive pilot plant campaign carried out with itabirite iron ores. The effects of ore type, feed size distribution, circuit configuration (open or closed-circuit and two-stage or single-stage), mode of grinding (AG or SAG), ball load, use of pebble crushing as well as of full secondary pre-crushing have been investigated. The results demonstrate both the technical feasibility and energy efficiency of such an alternative for itabirite comminution circuits.
引用
收藏
页数：8
相关论文
共 50 条
  • [41] Experimental Analysis of Semi-autogenous Grinding Mill Characteristics Under Different Working Conditions
    Ali Dorkhah
    Alireza Arab Solghar
    Masoud Rezaeizadeh
    Iranian Journal of Science and Technology, Transactions of Mechanical Engineering, 2020, 44 : 1103 - 1114
  • [42] Semi-autogenous grinding model based on effective grinding rate and three stages internal classification - Part i
    Becerra, Miguel
    Magne, Luis
    MINERALS ENGINEERING, 2020, 157
  • [43] Multi-layer kinematics and collision energy in a large-scale grinding mill-the largest semi-autogenous grinding mill in China
    Li, Tongqing
    Peng, Yuxing
    Zhu, Zhencai
    Zou, Shengyong
    Liu, Songyong
    Yin, Zixin
    Ni, Xu
    Chang, Xiangdong
    ADVANCES IN MECHANICAL ENGINEERING, 2016, 8 (12) : 1 - 10
  • [44] Integrating photovoltaic solar energy and a battery energy storage system to operate a semi-autogenous grinding mill
    Pamparana, G.
    Kracht, W.
    Haas, J.
    Diaz-Ferran, G.
    Palma-Behnke, R.
    Roman, R.
    JOURNAL OF CLEANER PRODUCTION, 2017, 165 : 273 - 280
  • [45] Development of a Software Sensor based on a NARMAX-Support Vector Machine Model for Semi-Autogenous Grinding
    Acuna, Gonzalo
    Curilem, Millaray
    Cubillos, Francisco
    REVISTA IBEROAMERICANA DE AUTOMATICA E INFORMATICA INDUSTRIAL, 2014, 11 (01): : 109 - 116
  • [46] Monitoring of a semi-autogenous grinding circuit on a gold plant with topology preserving projection methods and neural networks
    Wang, Q.
    Aldrich, C.
    WORLD GOLD 2007: BY AND CO-PRODUCTS AND THE ENVIRONMENT, 2007, (09): : 287 - 293
  • [47] The Optimisation of Semi-Autogenous and Ball Mill Based Circuits for Mineral Processing by Means of Versatile and Efficient High Pressure Grinding Roll Technology
    Kirsch, S. W.
    Daniel, M. J.
    TENTH MILL OPERATORS CONFERENCE 2009, PROCEEDINGS, 2009, (11): : 81 - +
  • [48] Grinding iron ore concentrate by using HPGR and ball mills and their effects on pelletizing and reduction stages-a pilot-scale study
    Amiri, Seyed Hamzeh
    Abadi, Mohsen Izadi-Yazdan
    CANADIAN METALLURGICAL QUARTERLY, 2022, 61 (04) : 442 - 453
  • [49] Studying the integration of solar energy into the operation of a semi-autogenous grinding mill. Part I: Framework, model development and effect of solar irradiance forecasting
    Pamparana, G.
    Kracht, W.
    Haas, J.
    Ortiz, J. M.
    Nowak, W.
    Palma-Behnke, R.
    MINERALS ENGINEERING, 2019, 137 : 68 - 77
  • [50] Studying the integration of solar energy into the operation of a semi-autogenous grinding mill. Part II: Effect of ore hardness variability, geometallurgical modeling and demand side management
    Pamparana, G.
    Kracht, W.
    Haas, J.
    Ortiz, J. M.
    Nowak, W.
    Palma-Behnke, R.
    MINERALS ENGINEERING, 2019, 137 : 53 - 67
12345