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| Pelletizing is the process of making waste materials into solid fuel. The objects are used for burning purposes. Wood Pellet is one of the most commonly used pelletizing materials. Wood Pellet can be made from any type of Agro-Forestry waste: Groundnut-shell, Sugarcane Biogases, Caster Shells/Stalk, Saw dust, Coffee Husk, Paddy Straw, Sunflower Stalk , Cotton Stalks, Tobacco waste, Mustard Stalk, Jute waste, Bamboo Dust, Tea waste, Wheat Straw, Palm husk, Soybeans husk, Coir Pitch Barks/Straws, Rice Husks, Forestry wastes, Wood Chips and many other Agro wastes. But the Moisture Content Should be Less than 12%, grain size is below 5*5mm. |
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| (1).Crushing Process: |
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| When
the thickness of raw wood material is >10mm, and
>50 * 50mm(L * W), we need use the Wood Chipper to
chip them into small pieces, then crush the small pieces
into wood powder with diameter less 3mm by Hammer Mill
(Crusher). |
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| (2).
Drying Process: |
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| The
best moisture content to pelletizing is about 13-15%.
Our Rotary Dryer is made up of Stove and Main Rotary
Dryer, which can realize to reduce the moisture from
60% to 10%. Our stove is fueled by sawdust, wasted wood,
coal, which can save electricity consumption largely. |
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| Our
Rotary Dryer is specially designed for energy saving
purpose, the outside of the dryer is covered with special
cotton material sheet to prevent the heat outrunning. |
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| (3).
Pelletizing Process: |
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| MZLH
Wood Pellet Mill is the most important equipment, which
have the following features: |
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1.
The lubrication system for wood pellet mill adopts
the tracing and inspecting system controlled by
the microcomputer. When the temperature of the
bearing is over the normal temperature, the microcomputer
will start the Auto-Lubrication System to lubricate
the bearings, which complete solved the trouble
of lubricating roller depending on the operation
experience. The Lubrication System is made up
of the tracing and inspecting system controlled
by the microcomputer, auto-lubricating system
on time and compelled lubricating system by hand. |
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2.
Driving Gear adopts the high precision gear transmission
structure. The wear bearing is SKF from Sweden.
The ring die adopts the hoop fastening method,
which is increasing the speed of discharge comparing
with the past bolt fastening method. As a result,
the capacity is 10-15% higher than the belt transmission
structure. |
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3.
As per the ring die and roller of the wood pellet
mill, we have the fine machining with the alloyed
steel. And our heating treatment is also different
from the other domestic manufacturer, our carburizing
treatment make the depth of hard facing to 2mm,
which improve the anti-abrasion of the ring die
and roller more than 10 times, it can save the
production cost heavily. |
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| (4).
Cooling Process: |
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| After
the pelletizing process, the temperature of the wood
pellet is about 60-80 degree, and the moisture content
of the wood pellet is about 15%, so we need use Cooler to reduce about 3-4% moisture, such this the wood pellet
is easy to store. |
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| But
considering the feedback from some foreign clients,
the local climate is very humidity; they hope to cool
the wood pellet with moisture 7-8%. In order to satisfy
the different need from different clients, we develop
one kind of new Stabilizer Combined Cooler. |
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| (5).
Packing Process: |
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| After
cooling, the wood pellet will not directly enter into
the fuel process, avoiding the wood pellet affected
with damp. The packing process is necessary. In this
process, we assemble our domestic best Semi-Auto Packing
Machine to you. |
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| Generally,
most clients needs one small weight range scale with
auto sealing packing machine, and one large weight range
scale with semi-auto packing machine. For the first
one, the weight range will be 15-25kgs per bag, and
for large scale, it will be 1000kgs per bag or 800kgs
per bag, up to different clients needs. |
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Note:During
the complete wood pellet plant, the Dust Filtering is
one heavy and important task. We assemble the Common
Dust Collector(known as cyclon) and Impulse Dust Filter,
for the exhausting air, we use Water Film Dust Collector
to get to the free dust situation in the process of
Drying and Cooling for which generate plenty of dust
in the working time.
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