COKE DUST BRIQUETTING METHOD Russian patent published in 2012 - IPC C10L5/04 C10L5/12 

FIELD: metallurgy.

SUBSTANCE: invention relates to technology of fuel components briquetting - coal sludges, fine classes of coal, coke dust. The method of coke dust briquetting consists in production of a concentrate. The concentrate is produced by enrichment of coke dust with particle size of less than 1 mm with initial ash content of 10-16.8 wt %, and sulphur content of 0.4-0.5 wt %, by the method of oil agglomeration to ash content of 5.0-5.5 wt% and sulphur content of 0.05 wt %. The prepared concentrate and binder heated to 100-133°C - carbamide taken in the amount of 4.0-6.0% to the weight of the initial concentrate. The mixture is briquetted in steps, for this purpose at first the load of 5-6 atm is set, with a delay of 3-5 min. and further to 15 atm with a delay under the maximum load of 3-5 min.

EFFECT: production of fuel briquettes with low ash content and sulphur content, recycling of coke dust.

1 cl, 6 tbl, 3 ex