Method and apparatus for granulation and granulated product
    1.
    发明授权
    Method and apparatus for granulation and granulated product 失效
    造粒和造粒产品的方法和装置

    公开(公告)号:US5100592A

    公开(公告)日:1992-03-31

    申请号:US631249

    申请日:1990-12-20

    摘要: A method of melt granulation for powdery material is disclosed wherein the powdery material is discharged onto the upper surface of a heated rotary spreader for migration under centrifugal force to the periphery of the spreader accompanying by melting of a portion of the material and enrobing of non-melted particles by the melted material for discharge as enlarged granules from the periphery of the spreader. To improve the quality of the granules produced, the feed material is supplied to the spreader at two separate locations. The first location is the central portion of the spreader to provide the melted material and the second location is adjacent to the periphery of the spreader. The spreader is preferably in the form of a concave bowl or inverted truncated cone or dish. Feed material is supplied to the first location by a screw feeder extending down the side of the dish and at the second location by a rotary vaned distributor located within the dish which radially flings the feed material onto the inclined dish wall. The process and apparatus is particularly useful for the production of non-sticky granules which are difficult to form when a single central feed of material is used.

    摘要翻译: 公开了一种用于粉末材料的熔体制粒方法,其中粉末材料被排放到加热的旋转撒布机的上表面上,用于在离心力下向扩散器的周边迁移,伴随着材料的一部分的熔化并且引入非均相 通过熔化的材料熔化的颗粒作为从扩散器的周边扩大的颗粒排出。 为了提高生产的颗粒的质量,将饲料在两个不同的位置供应到撒布机。 第一位置是吊具的中心部分,以提供熔化的材料,第二位置与吊具周边相邻。 撒布机优选为凹碗或倒圆锥形或碟形的形式。 通过在盘的侧面延伸的螺旋进料器将进给材料供给到第一位置,并且在第二位置处,通过位于盘内的旋转式叶片式分配器将进料材料径向地旋转到倾斜的盘壁上。 该方法和设备对于生产当使用单一中心原料进料时难以形成的非粘性颗粒特别有用。