1. High moisture content; Usually contains a certain amount of oil, say less than 5%.
2. Large size, very hard texture, will need to be shredded by special equipment;
3. High moisture content, normally fresh from oil factory, 50% rH at least;
4. Continuous long fiber with extremely high toughness, and it will become silky after crushing, requiring fine processing;
1. Crushing section:
First size reduction, turning the huge chunks of the EFB chips into within 30-100mm (L*W) The capacity won’t be affected by the moisture content.
2. Pulverizing section:
No matter what moisture condition the materials are, Macreat suggest that better apply twice-grinding for processing palm EFB. Palm fiber has extremely high toughness, it will become silky after the first pulverization, and can reach the standard only after the second pulverization.
3. Drying section:
To produce pellets it is important to reduce the moisture into 10-15%, thus after reducing the size of all materials, they need to be dehydrated by a dryer. The capacity could be strictly affected by the moisture content.
4. Pelletizing section:
The full process is a complete physical change. By the spinning of the main shaft, it drives the rollers of the pellet mill to push the materials into the trumpet haped holes of the pellet mill ring die, and the materials are firmly compressed into shape. There are no any chemical adeheres are applied at all.
a. Twin-shaft Shredder:
This machine is equipped with dual spindles that are precision processed and quenched and tempered by a CNC machining center, equipped with high-strength tools made of special heat-treated steel, and a well-known brand planetary gear reducer. The shredder can fully crush the hollow palm fruit bunch with high toughness with huge torsion force, and produce strip-shaped fragments of uniform size.
b. High Efficiency Hammer Mill
Equipped with high-speed rotating main shaft and high-toughness alloy hammers to beat and crush materials to produce small-sized materials. Available for grinding various forestry and agricultural wastes such as biological straw, stems, wood chips and wood branches. Good stability, collective sturdiness and durability, simple operation and maintenance, high capcity.
c. Triple Pass Dryer
The triple-layer-drum design of the dryer with the refractory insulation our side, the thermal efficiency of the drum self-insulation is more than twice that of the traditional dryer, and the thermal efficiency is increased by 50%. Compared with traditional dryers, it can reduce the floor space by about 50%, the civil construction investment by about 50%, and the power consumption by 60%. Also equipped with temperature alarm, fire detection & distinguishing system and interlock to guarantee safety.
d. Vertical Ring Die Pellet Mill
The new generation vertical ring die pellet mill is designed especially for producing biomass & wood fuel pellets. The most outstanding feature is that the vertical machine’s main shaft is driven by higher torque from the reducer, and producing pellets in higher density and good shapes. The pellet diameter could be fully customized accoding to customer demands. The vertical ring die pellet mill is very easy to oprate and maintain, cover very few lands, and could bring more profits than traditional machines.
e. Countercurrent cooling machine
When the pellets are freshly made out of the machine, because it’s from fully physical work, the termperature is very high, could up to 70-100℃, thus with the help of the cooling machine, not only the pellets could be cooled down to less than 40℃, but also it could store the pellets for a while, stressen the pressure of packing & convening sections.