Ring Die or Flat Die Biomass Pellet Mill?

Ring Die or Flat Die Biomass Pellet Mill?
September 12, 2023

Ring Die or Flat Die Biomass Pellet Mill?

Energy scarcity and environmental deterioration are becoming major concerns in today’s world. As a result, biomass pellets have shown to be the most viable alternative to natural gas and petroleum goods. Using a biomass pellet machine, these pellets can be made from practically any agricultural product.

Types of Biomass Pellet Mills

Ring Die and Flat Die biomass pellet machines are the two primary types of biomass pellet machines.

Ring Die Biomass Pellet Mill

This ring die biomass pellet machine is typically used to treat materials such as logs, sawdust, wood chips, and tree branches. It has a cylindrical shape with numerous holes, so the name Ring Die. The number of holes is determined by the rotational motion.

The operating principle

Inside the ring are 2-4 free revolving and powered rollers. The rolling rollers press the raw material through the openings in the pellet chamber, forming cylindrical pellets. The mill’s inside and outside distances are equal, resulting in uniform speed in the ring die and compression rollers. As a result, there is no added friction, making the mill efficient and appropriate for large-scale biomass pellet manufacturing.

There are several advantages to employing this mill, including, but not limited to;

  • Used in the manufacturing of larger industrial pellets.
  • It has high pressure and hence makes denser and smoother biomass pellets.
  • It is the ideal choice for wood and palm fiber processing.
  • It is less expensive and has a longer service life than the other mill.

Features of a Ring Die Pellet Mill

The mill uses modern air circulation technology to control temperature and vapor. The temperature is set at 80-100°C to reduce heat pressure generated by the ring die. As a result, the ring dies and the roller lifespan is extended, resulting in increased output. A single-ring die can pelletize around 300 tones. This is substantially enhanced to around 1000 tons with regulated temperature.

Flat Die Biomass Pellet Mill

Another type is a well-known biomass pellet mill that consists of a flat round iron die, a feeder, and a press roller. This biomass pellet mill classification is divided into four categories.

  • Pellet mill powered by electricity.
  • Pellet mill powered by diesel.
  • Pellet mill with PTO.
  • Pellet mill powered by petrol.

Operating Principle of Flat Die Biomass Pellet Mill

Flat Die Biomass Pellet Mill has a group of 2-4 grooved rollers. Raw materials are dropped from above and driven through the die-holes by rotating rollers. They then extrude from the bottom of the die holes forming a long cylinder, which is cut into pellets by a cutter.

This mill has three modes of operation: driving flat die, driving roller, and dual drive. The Flat Die biomass pellet mill is generally intended for the production of low-cost biomass pellets. It also takes up little space, making it an excellent alternative for small-scale pellet production.

Sawdust, rice husk, wood chips, bamboo waste, peanuts, and other raw materials are used in this mill. These raw materials can be used to make pellets for a variety of applications. As a result, flat pellet mills are classified as Biomass pellet mills and feed pellet mills.

Biomass Pellet mill

This mill can make pellets out of raw materials like sawdust and wood chips. Pellets are mostly used for cooking, heating, and animal bedding, among other things.

Feed Pellet mill

It is appropriate for small-scale farmers that raise cattle. It contributes to better animal nutrition.

Depending on your goals, you can use either the Rind Die or Flat Die biomass pellet mills to achieve them.

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