FIELD: chemistry.
SUBSTANCE: invention relates to use of a salt of iron and an organic acid selected from formic acid, carboxylic acids containing 3 or more carbon atoms and sulphonic acids to reduce carbon content in fly ash obtained when burning coal. Described is coal treated with said salt of iron and an organic acid. The invention also describes methods of treating and burning coal by adding a salt of iron and an organic acid before or during combustion of coal in a furnace.
EFFECT: reduced content of carbon in fly ash obtained when burning coal in a furnace.
18 cl, 5 tbl, 5 ex
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