With the increasing use of pellet mills, many people believe that pellets can be produced with a moisture content of 30%. Excessively wet raw materials entering the pellet mill can cause several major problems during production.
1. Slippage or blockage. Overly wet raw materials can cause the pellet mill rollers to slip during production, or sticky pellets to stick to the die holes. High temperatures can even form mist, leading to equipment blockage over time.
2. Poor pellet formation. High moisture content in the raw materials can cause cracks on the pellet surface. Excessive moisture content can lead to larger cracks, resulting in lower-than-normal pellet hardness. The ideal smoothness and compactness cannot be achieved, and pellets are prone to coking after combustion, which can also affect storage and transportation.
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