Browsing by Subject "Fine coal"

Now showing items 1-9 of 9

    • Adsorbent assisted drying of fine coal 

      Peters, Elmarie Sunette (North-West University (South Africa) , Potchefstroom Campus, 2016)
      Coal fines are generated by the increase in mechanization on coal mines, and have the ability to retain large amounts of moisture due to its inherently large surface areas (Reddick et al., 2007). The bulk of the moisture ...

    • Column leaching of fine coal tailings: impact on environment and thickener operation 

      Moyakhe, Dumisane; Fosso-Kankeu, Elvis; Campbell, Quentin (EARET, 2018)
      The coal mining sector is synonymous with generating large quantities of waste. A comprehensive fraction of the waste is classified as fines (-500 µm) and ultrafine (-100 µm) particles, which accounts eleven per cent ...

    • A comparison between high airflow drying and adsorption assisted drying for the dewatering of fine coal 

      Van Rensburg, M.J. (North-West University (South Africa), 2019)
      Development in the fossil fuel sector should be an on-going process to promote sustainability, while reducing the environmental footprint. It is important to improve operations in the mining sector to ensure that coal is ...

    • Correlating laboratory and pilot scale reflux classification of fine coal 

      Smith, Izak Gerhardus Theron (2015)
      The search for efficient and economical ways to beneficiate fine coal remains an active research area. Recent developments have shown that the reflux classifier can successfully be used on Australian coals, and based on ...

    • Destoning of fine coal in a fluidized bed 

      Le Roux, Marco; Campbell, Quentin; Langner, Danie (Springer, 2016)
      Water scarcity is driving the development of dry coal beneficiation processes. A lot of research has gone into the development of dry dense medium fluidized bed technology (DMFB), especially in China. However, these processes ...

    • Drying of fine coal using warm air in a dense medium fluidised bed 

      Van Rensburg, Martha Johanna (2014)
      Fluidised bed drying is currently receiving much attention as a dewatering option after the beneficiation of fine coal (defined in this study as between 1mm and 2mm particles). The aim of this study was to investigate the ...

    • Fine coal dewatering using high airflow 

      Le Roux, M.; Campbell, Q.P.; Van Rensburg, M.J. (Taylor & Francis, 2014)
      Fluidized bed drying is currently receiving much attention as a dewatering option after the beneficiation of fine coal. Apart from concerns about safety and combustion, the operating costs can be high if very high gas or ...

    • Integrated drying and screening of small coal particles 

      Dreyer, Gert Jan Walt (North-West University (South Africa)., 2022)
      The recent development of dry beneficiation technologies were motivated by the shortage of water, not only in South Africa, but in many other coal producing countries worldwide. The low capital and operating costs associated ...

    • Moisture transport during contact sorption drying of coal fines 

      Van Rensburg, M.J.; Le Roux, M.; Campbell, Q.P.; Peters, E.S. (Taylor & Francis, 2020)
      Studies have shown that contact sorption drying is a feasible technique to dewater fine (+0.15mm–0.5mm) and ultra-fine (−0.15 mm) coal. The aim of this article is to further investigate the drying mechanism involved. It ...