FIELD: fertilizer production. SUBSTANCE: humates were prepared by superfine dispersion of coals containing humic acids in the presence of chemical additive agent, - sodium and/or potassium carbonate. Chemical additive agent is added to the charge at the mass ratio with coal equal to (0.8-1.2):1, and dispersion is carried out up to charge color change from black and dark-gray to brown. EFFECT: enhanced quality of prepared humates, high extraction degree of humic acids from coal for a single stage. 2 cl, 1 tbl
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