Clean Technology (청정기술)

The Korean Society of Clean Technology (한국청정기술학회)
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Development of Treatment Process for Residual Coal from Biosolubilization

  • Rifella, Archi (Clean Fuel Laboratory, Korea Institute of Energy Research) ;
  • Shaur, Ahmad (Clean Fuel Laboratory, Korea Institute of Energy Research) ;
  • Chun, Dong Hyuk (Clean Fuel Laboratory, Korea Institute of Energy Research) ;
  • Kim, Sangdo (Clean Fuel Laboratory, Korea Institute of Energy Research) ;
  • Rhim, Young Joon (Clean Fuel Laboratory, Korea Institute of Energy Research) ;
  • Yoo, Jiho (Clean Fuel Laboratory, Korea Institute of Energy Research) ;
  • Choi, Hokyung (Clean Fuel Laboratory, Korea Institute of Energy Research) ;
  • Lim, Jeonghwan (Clean Fuel Laboratory, Korea Institute of Energy Research) ;
  • Lee, Sihyun (Clean Fuel Laboratory, Korea Institute of Energy Research) ;
  • Rhee, Youngwoo (Graduate School of Energy Science and Technology, Chungnam National University)
  • Received : 2017.11.27
  • Accepted : 2017.12.19
  • Published : 2018.06.30
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Abstract

This study introduced a treatment process that was developed to treat Indonesian low-rank coal with high-ash content, which has the same characteristics as residual coal from the biosolubilization process. The treatment process includes separation of ash, solid-liquid separation, pelletizing, and drying. To reduce the ash content, flotation was performed using 4-methyl-2-pentanol (MIBC) as frother, and kerosene, waste oil, and cashew nut shell liquid (CNSL) as collectors. The increasing amount of collector had an effect on combustible coal recovery and ash reduction. After flotation, a filter press, extruder, and an oven drier were used to make a dried coal pellet. Then another coal pellet was made using asphalt as a binder. The compressive strength and friability of the coal pellets were tested and compared.

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References

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