A pellet mill is also called a pellet press, and these machines create pellets from powdered materials. Pellet mills are commonly used to prepare animal feed, and there are several configurations that vary in operational mode, design and size. Below, you will learn about the various pellet mill categories.
This type of pellet mill is used to create livestock feed, but it can also be used to create wood pellets for use as fuel. Within this category, flat die and ring die mills are used to create pellets of varying sizes. Flat die mills use a die that collects powder at the top of the mill, where it is pressed through slots. Cutters clip the powder as it emerges to create pellets. Ring die mills have radial slots along the die’s surface; powder is fed in and rollers push it through, cutting it in much the same way as with a flat die mill.
The screw-type mill is the most common variety. Here, powder is collected in a pocket and compressed with a screw press, which may be operated manually or with a hydraulic system. With all types of pellet mills, heat is used as part of the forming process. Heat allows the pellets to form with the correct consistency and texture. In most cases, pellets are cooled immediately after they are cut, allowing them to maintain their shape. Depending on the feed product being made, pellets may receive a quick ‘bath’ or spray that allows them to retain their texture and freshness for a prolonged period.
Pellet Mills Oregon are mostly used for livestock feed and to create wood pellets to be burned in heaters and stoves, but they can also be used to make products such as lawn and garden fertilizer and rat poison. In applications such as these, pellet mill operators wear protective clothing and gear during the manufacture and handling of pellets. The packaging for animal feed is designed to prevent the product from deteriorating, and the packaging of fertilizer and rat poison is designed to advise consumers on the product’s proper use.
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