Research of characteristics of PJSC “Koks” coal and coke dust fuel briquettes Vyacheslav Solodov, Tatyana Cherkasova, Nikolay Kolmakov, Sergey Subbotin and Yuriy Radchenko E3S Web Conf., 134 (2019) 02007 Published online: 28 November 2019 DOI: 10.1051/e3sconf/201913402007