低温转化氯化钾生产硫基氮磷钾复合肥  

The Technology to Produce Sulfatebased NPK Complex Fetilizer from Potassium Chloride at Low Temperature

作　　者：邹云霞 

机构地区：[1]南化集团设计院,江苏南京210048

出　　处：《磷肥与复肥》1999年第6期47-51,共5页Phosphate & Compound Fertilizer

摘　　要：介绍低温转化氯化钾生产硫基氮磷钾（Ｓ－ ＮＰＫ）生产工艺。该工艺把ＫＣｌ转化、磷酸与Ｓ－ ＮＰＫ生产有机结合；用喷浆造粒干燥机把造粒、干燥及大部分返料返回在一个设备中完成。产品品位为１２－ １８－ １５。本文详细介绍工艺流程、工艺控制条件、技术经济测算。该产品成本低，产品价格降到１ ５００ 元／吨，仍可获得一定经济效益，２～３ 年可收回投资，有相当的市场竞争力。The technology of sulfatebased nitrogenphosphoruspotassium (SNPK) complex fertilizer from chloride potassium at low temperature is presented. It integrates process of potassium chloride conversion, phosphoric acid and SNPK production. Granulation, drying and recycle stream are completed in one granulator. The product grade can reach up to 12-18-15. Meanwhile, the process flow, control conditions as well as the technical and economical assessment are described.The technology has the advantage of low production cost.Even though the product price falls down to 1 500 RMB Yuan/t,the economic profits are still appreciable. The return period of investment is as short as 2～3 years, showing considerable market competition ability. \;

关 键 词：氯化钾 低温转化 造粒 硫基氮磷钾 复合肥料 

分 类 号：TQ444.5[化学工程—化学肥料工业]