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公开(公告)号:US5395449A
公开(公告)日:1995-03-07
申请号:US977205
申请日:1992-11-16
申请人: Sayeeda J. Quadir , Russell I. Derrah , Arthur R. Shirley, Jr. , Keith D. Cochran , Terence B. Lynch , Zdzislaw M. Tulimowski
发明人: Sayeeda J. Quadir , Russell I. Derrah , Arthur R. Shirley, Jr. , Keith D. Cochran , Terence B. Lynch , Zdzislaw M. Tulimowski
CPC分类号: B01J2/16 , B01J8/26 , C05G3/0029 , Y10S118/05
摘要: An apparatus and method for continuously producing polymer coated particles, and in particular, a polymer coated fertilizer, wherein the coating material used is, for example, an aqueous film forming latex. The coating process is conducted with a plurality of fluidized beds, connected in series, under conditions such that, preferably, the relative humidity of the air in the initial coating zones is maintained below the critical relative humidity of the particle to be coated. The apparatus and process provides a method to prepare coated particles having a narrow coating weight distribution, and thus allows for the economical production of a slow release fertilizer.
摘要翻译: 用于连续生产聚合物涂覆的颗粒,特别是聚合物涂覆的肥料的设备和方法,其中使用的涂料是例如水性成膜胶乳。 涂覆过程是在多个流化床中串联连续进行的,这些条件使得初始涂层区域中的空气的相对湿度优选保持在待涂覆颗粒的临界相对湿度以下。 该设备和方法提供了制备具有窄涂层重量分布的涂覆颗粒的方法,因此允许经济地生产缓释肥料。
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公开(公告)号:US5211985A
公开(公告)日:1993-05-18
申请号:US773273
申请日:1991-10-09
申请人: Arthur R. Shirley, Jr. , Keith D. Cochran , Terence B. Lynch , Russell I. Derrah , Sayeeda J. Quadir , Zdzislaw M. Tulimowski
发明人: Arthur R. Shirley, Jr. , Keith D. Cochran , Terence B. Lynch , Russell I. Derrah , Sayeeda J. Quadir , Zdzislaw M. Tulimowski
CPC分类号: B01J2/16 , B01J8/26 , C05G3/0029 , Y10S118/05
摘要: An apparatus and method for continuously producing polymer coated particles, and in particular, a polymer coated fertilizer, wherein the coating material used is, for example, an aqueous film forming latex. The coating process is conducted with a plurality of fluidized beds, connected in series, under conditions such that, preferably, the relative humidity of the air in the initial coating zones is maintained below the critical relative humidity of the particle to be coated.
摘要翻译: 用于连续生产聚合物涂覆的颗粒,特别是聚合物涂覆的肥料的设备和方法,其中使用的涂料是例如水性成膜胶乳。 涂覆过程是在多个流化床中串联连续进行的,这些条件使得初始涂层区域中的空气的相对湿度优选保持在待涂覆颗粒的临界相对湿度以下。
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