METHOD FOR OBTAINING BRIQUETTES FROM FLUOROCARBON-CONTAINING WASTES Russian patent published in 2013 - IPC C22B7/00 C22B1/243 

FIELD: metallurgy.

SUBSTANCE: method involves mixing of tail ends of flotation of coal froth and gas cleaning wastes and briquetting of the obtained mixture. Slurry and/or dust of gas cleaning is used as a binding agent at the following component ratio of the obtained mixture, wt %: gas cleaning slurry 40-75; gas cleaning dust 25-60. With that, gas cleaning dust is supplied at water addition, not more than 10%, over 100% of the binding agent, and after the obtained mixture is briquetted, heat treatment of briquettes is performed at the temperature of 200-400°C and further air cooling is performed. Tail ends of flotation of coal froth are supplied for mixing in the amount of not more than 70 wt % of total weight of the obtained mixture, and slurry of gas cleaning of electrolytic production of aluminium with humidity of not more than 80 %. As binding agent, it is possible to use dust of gas cleaning of electrolytic production of aluminium with content of resinous matters of 10 to 25%.

EFFECT: invention allows performing complex processing of secondary carbon-bearing wastes of electrolytic production of aluminium so that carbon-bearing briquettes with high consumer properties are obtained.

4 cl, 1 tbl