| 摘要 |
FIELD: manufacture of mineral fertilizers. SUBSTANCE: humated mineral fertilizer comprising granular mineral fertilizer, e.g. carbamide, superphosphate or potassium chloride and alkali metal humate, further comprises carbamidoformaldehyde resin, the ratio of components being as follows (wt%): 95.7 alkali metal humate; and 0.3-0.4 carbamidoformaldehyde resin. The claimed process for preparing humated mineral fertilizer, e.g. carbamide, superphosphate or potassium chloride comprises cladding fertilizer mineral substrate granules with envelope of alkali metal humate and subsequently treating fertilizer granules with alkali metal humate solution and carbamidoformaldehyde resin. EFFECT: improved properties of the humated mineral fertilizer. |
