N—P—K复肥四元体系KCl—KH_2PO_4—CO（NH_2）_2—H_2O在

Phase Diagram of the Quaternary System KCI-KH_2PO_4-CO (NH_2 )_2 - H_2O at 298.2 K

中文关键词:  四元体系  平衡相图  氯化钾  脲  磷酸氢二钾

英文关键词:Quaternary system,Phsae diagram,Potassium Chloride,Potassium Dihydrogen Phosphate Urea,

中文摘要:

      基于Ｎ—Ｐ—Ｋ三元复肥的物理化学基础．首次测定了四元体系ＫＣｌ—ＫＨ２ＰＯ４—ＣＯ（ＮＨ２）２在２９８．２Ｋ时的溶度及饱和溶液的折光率，绘制了体系的溶度图和折光率──组成图。该体系的溶度图属低共饱型，平衡固相为组份化合物，低共饱点组成为：１００ｇ饱和溶液中．ＫＣｌ１３．３１ｇ，ＫＨ２ＰＯ４３．３３ｇ，ＣＯ（ＮＨ２）２４７．２６ｇ，Ｈ２Ｏ３６．１０／１０ｇ。

英文摘要:

      For the aim of fertilizer studying, the solubility and refraction indices of the quaternary system KCI-KH2PO4-CO (NH)2-H2O have been investigated by isothermal method at 298.2K first time. The system is simple eulonic type, whose eulonic point is KCI 13. 31,KH2PO4 3. 33,CO (NH2)2 47. 26, H2O 36. 10g/100g saturacted solutions.