METHOD OF MANUFACTURING HUMIN FERTILIZERS Russian patent published in 1998 - IPC

FIELD: chemical industry, more particularly manufacture of organic fertilizers from solid combustible mineral resources. SUBSTANCE: claimed method comprises superfine crushing of carbons containing humic acids is admixture with chemical addition agent. Original mixture is conditioned to moisture content of 6-12 wt %. The chemical addition agent includes alkali metal carbamide and/or hydroxides. The ratio of carbons to alkali metal carbamide and/or hydroxides in mixture is maintained within 1: 0.2-0.35. EFFECT: more efficient manufacturing method. 2 cl