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首页> 外文期刊>Chemical Science International Journal >Nitrogen-phosphate Fertilizers Based on Activation of Phosphorite Powder with Partially Ammoniated Mix of Phosphoric and Sulphuric Acids
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Nitrogen-phosphate Fertilizers Based on Activation of Phosphorite Powder with Partially Ammoniated Mix of Phosphoric and Sulphuric Acids

机译：基于磷酸盐粉末的磷酸盐粉末和硫酸组合的磷酸酯粉末激活氮磷酸盐

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In this article obtaining complex nitrogen-phosphate fertilizers based on activation of phosphorite powder with partially ammoniated mix of phosphoric and sulphuric acids have been studied. In order to reduce the foaming of the process, for the first time a partially ammoniated mix of acids was used. The optimal technological parameters for activation phosphorite powder with partially neutralized mixes of sulphuric and phosphoric acids are the followings: the mix of sulphuric and phosphoric acids with a ratio of SО_(3):Р_(2)О_(5) = 1.2; рН of acids – 2.5; weight ratio of ammonium sulphate-phosphate slurry towards phosphorite powder is 100 : 20; temperature is 60°С; duration is 30 min.? The composition nitrogen-phosphate fertilizers obtained in optimal condition contains (wt., %): N – 11.55; Р_(2)О_(5total) -24.61; Р_(2)О_(5acceptable by citric acid) -21.66; Р_(2)О_(5 acceptable by EDTA) -20.24; Р_(2)О_(5water-soluble )?-13.02; CaO_(total) -13.59; СаО_(acceptable)_(by citric acid) -11.43. In that condition, granulated products of nitrogen-phosphate can be produced with high strength. The advantage of offered promising technology concludes in reduction two times expenditure of the most expensive ammonia in comparison with ammonium sulphate production and an increase in gross domestic product.
机译：在本文中，研究了基于磷酸盐粉末的磷酸盐粉末的复合氮磷酸酯，已经研究了含有部分氨化的磷酸和硫酸的混合物。为了减少该方法的发泡，首次使用酸的部分氨化混合物。用于活化磷酸磷酸粉末的最佳技术参数具有部分中和硫酸和磷酸的混合物是以下：硫酸和磷酸的混合具有Sо_（3）：р_（2）о_（5）= 1.2的比例; РН酸 - 2.5;硫酸铵 - 磷酸铵浆料对磷酸盐粉的重量比为100：20;温度为60°С;持续时间是30分钟？在最佳条件下获得的组合物氮磷酸盐含有（wt。，％）：n - 11.55; Р_（2）О_（5TOTAL）-24.61; р_（2）о_（柠檬酸5可接近）-21.66; Р_（2）О_（5由EDTA可接受）-20.24; р_（2）О_（5水溶性）？ - 13.02; Cao_（总计）-13.59; Сао_（可接受的）_（通过柠檬酸）-11.43。在该条件下，可以高强度生产氮磷酸盐的颗粒状产物。提供了有希望的技术的优势在于减少了与硫酸铵生产和国内生产总值增加的最昂贵氨的两倍的支出。

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