TECHNIQUE FOR PRODUCTION OF LIQUID COMPOSITE FERTILIZERS

摘要

The invention relates to the production of liquid complex fertilizer (HUS) of HUS To get reextraction of phosphoric acid from its saturated organic solvent solution containing the di- and monoammonium phosphate, the amounts of which are determined by the formulas: M 1 / (1 + K) W - 2 and mg K / (1 + K) W 1, where M, and M - the number, respectively the mono- and diammonium phosphate, mol / mol 0, W - output aqueous reextract as HUS, The invention relates to the production of liquid complex fertilizer (HUS) of phosphate raw material used in agriculture in Qual stve efficient and economic fertilizers The closest in technical essence and attainable result is a method for preparing HCS comprising phosphoric acid, extraction with an organic solvent and its re0, 05-0,17 parts by weight (m0ch.), K - molar ratio of di- and mono - ammonium phosphate in HUS, 1.2-1.9, separating the resulting aqueous reextract on Retur and the product, the amount of which is 0.05 0,17m.ch. reextract by treatment with ammonia retour return it to reekstraktsik 0 When this flow ratio is reextracted solution and the organic solvent is determined by the formula P (0,279 (Mt. + Vi) 4- 0.028). (H3P04) ftf, r, where () org - the concentration of phosphoric acid in an organic solvent mol / kg of solvent, and the amount of aqueous reextract outputted as HUS is determined by the formula, (M040) t W 1/1 + (M , + M). According to the present invention was prepared with the sum HCS nutrients N n-, .ravnoy 34,1-37%, the ammonia flow rate is 0,369-0,395 kg / kg, r 2 z0p. f BACKGROUND tabl0 1, 1-yl. ; extraction at 80-110 & amp; deg; C ammonia at P2Off0pr / NH weight ratio)