COMPOSITION OF FERTILIZER AND METHOD FOR OBTAINING FERTILIZER Russian patent published in 2004 - IPC

FIELD: agriculture. SUBSTANCE: the present innovation deals with carbamide-based fertilizer. Composition of fertilizer includes carbamide as foundation and contains 0.1-1.0 weight% carbamidoformaldehyde compound and, also, 0.05-0.15 weight% solid inert inorganic substance. The mentioned substance could be chosen out of the group including calcium carbonate, calcium sulfate, aluminum oxide, silicon dioxide or their mixtures, moreover, carbamidoformaldehyde compound contains 2.5 M formaldehyde and more/M carbamide. The method for obtaining fertilizer deals with obtaining carbamide fusion to supplement it with carbamidoformaldehyde compound followed by fusion granulating, moreover, one should predisperse solid inert inorganic substance in carbamidoformaldehyde compound at the quantity of 5- 100% against the weight of carbamidoformaldehyde compound. Granules have high strength being stable along the whole mass of the product suggested. EFFECT: higher efficiency. 7 cl, 13 ex, 1 tbl