Production of low ash coal by thermal extraction with N-methyl-2-pyrrolidinone

SD Kim, KJ Woo, SK Jeong, YJ Rhim… - Korean Journal of …, 2008 - Springer
Present study was conducted for the purpose of producing low ash coal from LRC (low rank
coals) such as lignite and sub-bituminous coal through thermal extraction using polar …

Investigation into the effects of ash-free coal binder and torrefied biomass addition on coke strength and reactivity

GM Kim, KY Lisandy, YY Isworo, JH Kim, CH Jeon - Fuel, 2018 - Elsevier
The effects of adding ash-free coal (AFC) as a binder on the physical and chemical
properties of coke were investigated to understand the mechanism of coke strength increase …