PREPARATION METHOD OF PULVERIZED COAL FUEL FOR COMBUSTION Russian patent published in 2019 - IPC C10L9/00 C10L9/10 

FIELD: heat power engineering.

SUBSTANCE: invention relates to heat engineering, namely to technology of burning hydrocarbon fuels, including low quality. Described is a method for preparation of pulverized coal fuel for combustion, which consists in drying and crushing crude coal, wherein said coal is coated with oxides and/or hydroxides of iron in the form of a suspension or dry powder spray, wherein concentration (amount) of deposited iron oxides and/or iron hydroxides should not exceed 0.4 % of the weight of the coal. Iron oxides and/or hydroxides are also applied on coal in the form of suspension in modified liquid glass, in which they make not more than 5 %.

EFFECT: reduction of average time of release of volatile substances, increase of rate of coagulation of magnetic particles, reduction of slagging of walls of boilers due to introduction of additive from iron oxides on surface of dust particles in a hammer coal mill, and also reduction of emission of ash aerosols into atmosphere.

7 cl, 5 dwg, 1 tbl, 9 ex