biomass pelletizer mold is very important for the material forming.

The mold is too thick, the material forming time is long, the density of the particles is relatively large, and the extrusion difficulty is high; the mold is thin and easy to break, and the density of the particles is relatively small.

The extrusion temperature is low, the yield is high, but the molding rate is low or the molding is poor.

Roughness is also an important indicator of the quality of the ring mold.

At the same compression ratio, the greater the roughness value, the greater the extrusion resistance of the wood chip particles, the more difficult the discharge is, and the excessive roughness also affects the quality of the particle surface. A suitable roughness value should be between 0.8 and 16.

The compression ratio of the biomass pelletizer is determined by the raw materials, so let’s take a few simple kinds of wood.

The compression ratio of poplar is 1:6, the compression ratio of Matsumoto is 1:7, the compression ratio of hardwood is 1:5, the compression ratio of crushed shavings is 1:5 5, and the compression ratio of corn stalk is 1:6.5. 

From these simple figures, the compression ratio of different raw materials is different.

The harder the raw material is, the smaller the compression ratio is. The more bulky the raw material is, the larger the compression ratio is, that is, the more fluffy the raw material, the easier it is to press-form, the more fluffy. 

The raw materials contain more fiber, and the fiber-containing materials are easy to form, so let’s talk about the compression ratio of poplar: 1:6.