%0 Journal Article %T Testing the fractional dissolution method for ashless concentrates obtained from solid fossil fuels %A Kuzmin, D.V. %A Burcev, I.N. %K oil shales, coal sludge, hypercoaler, fractional dissolution %J Proceedings of the Komi Science Centre of the Ural Division of the Russian Academy of Sciences %D 2026 %N 0 %P 7 %I FSBI FIC "Komi Scientific Center of the Ural Branch of the Russian Academy of Sciences"