Here a feeder with interlocking twin screws is often the best choice. BSP feeders employ a patented positive displacement action that feeds free flowing material with exceptional accuracy.įloodable materials, including fine materials such as fumed silica, gypsum and diatomaceous earth, can behave like liquids if not properly controlled during hopper discharge and feeding. Bulk Solids Pump (BSP) feeders and vibratory feeders also provide gentle, precise feeding of free-flowing materials. A variety of screw sizes and geometries are available to accommodate different material characteristics and desired feedrates. The following short list describes the behaviors most commonly encountered and the feeding solutions that feeder equipment manufacturers such as Coperion K-Tron have developed to handle these bulk solids challenges.Įasy-flowing materials, such as plastic pellets, granules and flakes, are most frequently metered with a single screw feeder. No one feeder design or feeder size can handle all the different material characteristics or throughput requirements. The flow behavior of different bulk solids can vary greatly depending on the material properties or particle geometry. Your feeder selection, and the success of your application, will be greatly influenced by the specific characteristics of the materials you must feed, the recipe precision needed for your process and the throughput required. Process equipment manufacturers have developed a vast body of expertise and a wide range of feeding technology options to address the multitude of challenges that can arise for process operations involving bulk solids.
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