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METHOD OF MANUFACTURING GRANULATED MINERAL FERTILIZER CONTAINING NITROGEN AND PHOSPHORUS; AND GRANULATED MINERAL FERTILIZER
METHOD OF MANUFACTURING GRANULATED MINERAL FERTILIZER CONTAINING NITROGEN AND PHOSPHORUS; AND GRANULATED MINERAL FERTILIZER
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机译:制造含氮和磷的粒状矿物肥料的方法和粒状矿物肥料
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FIELD: mineral fertilizers.;SUBSTANCE: method of manufacturing complex granulated mineral fertilizer consists in mixing ammonium nitrate and monoammonium phosphate-containing phosphate additive. The latter is granulated mineral double fertilizer simultaneously containing ammonium nitrate, monoammonium phosphate, and calcium phosphates at total content of digestible phosphorus 13÷21% (calculated as P2O5). Additive is introduced by way of melting it followed by admixing resulting melt to molten ammonium nitrate. Phosphate additive utilizes nitroammophosphate at weight ratio N:P2O5 equal to 23:21 or 26:13 and phosphate additive melt is preliminarily completely or partly separated from infusible solid phase, after which phosphate additive is introduced in amount 2-6% (as P2O5) of the weight of final product. Granulated mineral fertilizer contains ammonium nitrate and monoammonium phosphate with total content of digestible P2O5 within a range of 2÷6%, in which case 0.4÷28.6% of P2O5 is present in the form of dicalcium phosphate.;EFFECT: reduced corrosiveness of process medium, increased nutritive value of fertilizer having physicochemical properties competitive with those of known fertilizers, and simplified manufacturing technology.;5 cl, 1 tbl, 5 ex
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机译:领域:矿物肥料。物质:制造复杂粒状矿物肥料的方法是将硝酸铵和含磷酸一铵的磷酸盐添加剂混合。后者是一种颗粒状矿物双重肥料,同时含有硝酸铵,磷酸一铵和磷酸钙,其总可消化磷含量为13%和21%(按P 2 Sub> O 5 Sub>计算) 。通过熔融将添加剂引入,然后将所得的熔融物与熔融的硝酸铵混合。磷酸盐添加剂使用重量比为N:P 2 Sub> O 5 Sub>等于23:21或26:13的硝基氨基磷酸盐,并且磷酸盐添加剂熔体已从不可溶固相中初步完全或部分分离,然后以最终产品重量的2-6%(作为P 2 Sub> O 5 Sub>)的量引入磷酸盐添加剂。粒状矿物肥料包含硝酸铵和磷酸一铵,其可消化的P 2 Sub> O 5 Sub>的总含量在2%至6%的范围内,在这种情况下为0.4%的28.6%的范围P 2 Sub> O 5 Sub>以磷酸二钙的形式存在。效果:降低了工艺介质的腐蚀性,提高了肥料的营养价值,其理化特性可与已知肥料竞争,以及简化的制造技术。; 5 cl,1 tbl,5 ex
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