METHOD OF PRODUCTION OF COAL BRICKS Russian patent published in 2004 - IPC

FIELD: processing finely-dispersed high-moisture content coal cleaning products and coal fines with addition of inorganic binders. SUBSTANCE: proposed method includes mixing of coal slime and coal fines with cement and lime followed by additional mixing of charge at simultaneous selective grinding of its particles for forming secondary associates at sizes: 6-5 mm, 6-8%; 5-1 mm, 43-45%; 1-0.5 mm, 18-20%; 0.5-0.1 mm, 28-30%; and < 0,1 mm, 0.7-1.1%. Procedure is completed by heat treatment at temperature of 120-150 C. EFFECT: enhanced strength and water resistance of coal bricks; possibility of placing coal bricks for protracted storage. 1 dwg, 1 tbl