磷资源加工研究进展:8.钾长石与磷钾矿生产缓释肥研究进展  

Research progress of phosphate resource processing:8.Development of slow release fertilizer production from potash feldspar and phosphate rock containing potassium

作　　者：刘代俊[1] 谢克难[1] 何泽超[1] 蒋绍志[1] 罗洪波[1] 张允湘[1] 

机构地区：[1]四川大学化工学院四川省磷化学与工程重点实验室,四川成都610065

出　　处：《磷肥与复肥》2010年第2期14-15,共2页Phosphate & Compound Fertilizer

摘　　要：介绍利用钾长石和磷钾矿为原料生产磷钾硅镁复合肥的基本原理和中试工艺流程。所得肥料枸溶率可达88%,其中w(K2O枸溶)为3.2%～4.2%,w(P2O5枸溶)约10%,w(SiO2枸溶)约23.97%,w(MgO)约12.13%。该工艺具有流程短、投资省的特点,同时把矿石中的硅也变成了肥料。肥料呈枸溶性,肥料利用率高,增产明显。The basic principle and pilot process of slow release fertilizer production from potash feldspar and phosphate rock containing potassium are introduced. The citric acid-soluble rate of this fertilizer is up to 88%, with w （K20） of 3.2%-4.2%, w （P：Os） of 10%, w （SiQ） of 23.97%, w （MgO） of 12.13%.This process has the such advantages as short flow, low investment, the silicon as one of the fertilizer components from the rock transformed. The citric acid-soluble fertilizer has high utilization effect with obviously increased the yield of crops.

关 键 词：钾长石 磷钾矿 复合肥 枸溶钾 缓释肥 

分 类 号：TQ449.1[化学工程—化学肥料工业]