Method and apparatus for granulation and granulated product
Patent 5100592 Issued on March 31, 1992. Estimated Expiration Date: 
December 20, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 20, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References Re27214 1915201 2818601 2876491 2986772 3139465 3295838 3531562 3743464 Method for producing agglomerated powders and apparatus for performing the method InventorsAssigneeApplicationNo. 631249 filed on 12/20/1990US Classes:264/7, Coated particles23/313R, Agglomerating264/8, Utilizing centrifugal force or rotating forming zone264/40.1, WITH MEASURING, TESTING, OR INSPECTING264/40.7, Controlling rate of movement of molding material or its support in a continuous process264/114, Utilizing centrifugal force264/117, Agitating to form larger particles (i.e., accretion or agglomeration)425/8, By slinger or rotating liquid comminutor425/145, Feed control of material en route to shaping area425/222TUMBLING TYPE AGGLOMERATING MEANS FOR PARTICULATE MATERIALExaminersPrimary: Theisen, Mary LynnAttorney, Agent or FirmForeign Patent References
International ClassesB29B 009/08B29B 009/10 AbstractA 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.Field of SearchCoated particlesUtilizing centrifugal force or rotating forming zone WITH MEASURING, TESTING, OR INSPECTING Controlling rate of movement of molding material or its support in a continuous process Agitating to form larger particles (i.e., accretion or agglomeration) Utilizing centrifugal force By slinger or rotating liquid comminutor Feed control of material en route to shaping area TUMBLING TYPE AGGLOMERATING MEANS FOR PARTICULATE MATERIAL MEANS IMPARTING ROLLING ACTION TO DISCRETE CHARGE OF STOCK TO FORM A BALL Molding means having material shaping guideway providing arcuate path Agglomerating Pan agglomeration | |
