公开(公告)号：EP2583955A1

公开(公告)日：2013-04-24

申请号：EP11796033.6

申请日：2011-05-31

申请人： Otkrytoe Aktsionernoe Obschestvo Research & Design Institute Of Urea And Organic Synthesis Products (OAO NIIK)

发明人： SOLDATOV, Aleksei Vladimirovich ,  SERGEEV, Yury Andreevich ,  CHEBLAKOV, Nikolai Valentinovich ,  ANTIPOV, Stanislav Aleksandrovich ,  ERMOLAEV, Dmitry Alekseevich ,  KOTOVA, Natalya Nikolaevna ,  PROKOPYEV, Aleksandr Alekseevich ,  KOSTIN, Oleg Nikolaevich ,  KUZNETSOV, Nikolai Mikhailovich ,  ESIN, Igor Veniaminovich

IPC分类号： C05C9/00 ,  B05D1/02 ,  B05D7/00

CPC分类号： C05C9/005 ,  B01J2/006 ,  B01J2/12 ,  C05G3/0023

摘要： The invention relates to methods for producing urea-based fertilizers on the basis of urea and, more specifically, to methods for producing fertilizers containing urea and elemental sulfur. Sulfur-coated granulated urea is produced by introducing urea granules at a temperature of 20-60°C into a drum which has blades mounted on the inside surface thereof and rotates at a speed equal to 81-99 % of the critical speed of rotation of the drum, and by spraying a sulfur melt onto the surface of the urea granules. The melt is sprayed in the direction of the axis of rotation of the drum. The method provides for the even coating of the granules with sulfur.

摘要翻译： 本发明涉及基于尿素生产尿素肥料的方法，更具体地说涉及含有尿素和元素硫的肥料的生产方法。 通过将温度为20-60℃的尿素颗粒引入到其内表面上安装有叶片的滚筒中并以等于临界旋转转速的81-99％的速度旋转来制备硫磺涂布的颗粒状尿素 滚筒，并通过在尿素颗粒的表面上喷洒硫磺熔体。 熔体沿鼓的旋转轴线的方向喷射。 该方法提供了用硫均匀地涂覆颗粒。