Due to its simple design, high efficiency, and lower weight, the flat die pellet mill is predominantly employed in small-scale pellet production. It has a horizontal die and rollers above the die. As materials fall in from the top, they are compressed between rollers and die to form pellets. So die and rollers are the main and crucial parts in pelletizing production, which play a prominent role in affecting the capacity and quality of pellets. With a better understanding of them, you can enhance maximum output and increase the service life of the machine.
Rollers of homemade pellet mills are vital components for making pellets. The main purpose of rollers is to help the material mixture to get into the die hole. Thus the roll shape and construction are designed for preventing the slippage of the material and give a smooth surface for a better discharge. The material of roller parts must be anti-bearable and not easy to be broken. Rollers in our flat die pellet mills are made from precise material of alloy metal, which makes this core part wear-resistant and not easy to break. In addition, flat die pellet mills usually have two or three rollers that enlarge the capacity of making pellets.
The diameter of die holes in portable pellet mills is usually 1.5-12mm. Compared to the ring dies, the spotlights of the flat die are as follows: small and lightweight, easy to clean, and convenient to maintain. Dies are often made of various types of metals to make sure the die can resist corrosion. Our flat die is made of high-quality alloy steel with the best pellet die compression ratio. The flat die has many holes for extruding material into the formation of pellets. We can produce different dies as required. Pellet size can be designed to meet your requirements. Generally speaking, for fuel pellets, the diameter is from 4.5mm-12mm, and for the feed pellet the diameter is from 1.5mm-12mm. They are available in different designs such as the fixed die which is equipped with a rotating roller or the stationary roller with a driven die. You can opt for a suitable design based on the raw materials to be used in making pellets.
Adjustment of Rollers and Flat die
The distance between the roller and flat die can impact heavily how successfully the pellet mill operates. The roller and die are wearing consumable parts, due to the abrasive nature and pressure of compression. The distance set between the roller and die can impact how much energy the pellet mill uses, the quality of the pellet, pellet mill productivity, and the number of fines produced. Correctly setting up the die on a pellet mill will also increase the life of the roller and die and reduce the cost of changing these consumable parts.
How long will the die and rollers last?
Many buyers are very concerned about this question: how long will the die and rollers last？ This answer depends on how often you use the pellet mill and what kind of biomass you pelletize. Take sawdust pelletizing for example, constant usage of 4-8 hours a day for over 6 months will wear down the die and rollers. You need to replace them. If the pelletized materials are softer biomass like grasses, leaves, the die, and rollers can last over one year.
Having a good understanding of the functions of rollers and flat die is a necessary step to enable pellet mills to work efficiently. Rollers and die are quick-wear parts in the portable pellet mill. They are the top concern for customers who tend to purchase a flat die pellet mill. We are a professional supplier of pellet mill parts. If you need to customize these parts, please advise us of your specific requirements.