SYSTEM OF PREPARATION OF SOLID FUEL FOR BURNING Russian patent published in 1997 - IPC

FIELD: thermoelectronic plants and boiled-houses using coal, coal dressing wastes, shales and other kinds of solid field. SUBSTANCE: system includes starting material supply line 1, reservoir 2 connected with grinding devise 5, finished product line 14, intermediate product return line 16, separator consisting of two thin-walled thickeners 10 and 18 mounted in series, additional grinding device 11 used for selective grinding whose inlet is connected with thin-walled thickener 10 and intermediate product return line 16, pulp former 6 used for smooth mixing of pulp to required consistency before feeding it to thin-walled thickener 10 by means of pul pump 8, dressing apparatus 12 working in closed cycle with grinding device 11 and connected with thin-walled thickener 18 and gangue heap 27, pulp former 21 provided with filter and connected with thin-walled thickener 18, with vacuum pump 22 and pulp pump 23 feeding the finished product for burning in boiler furnaces, lines 13 and 17, elevator 15, pipe lines 3,7,9,19,20,25,26,28 and 29, pump station 4 for supply of water, water basin 14 and gangue heap 27. EFFECT: enhanced efficiency. 1 dwg, 2 tbl