Before pelletizing, we need to grind the raw material to small particle which has to be smaller than the hole of the die, which is an important stage in a mature wood pellet mill plans. The particle can be generated through the small hole of the screen with a diameter from 1mm to 10mm. Owning to wide range for the size of the screen in the hammer mill, it can produce the particles in different sizes. For this reason, hammer mill is widely used in pellet plant. But there are some components of hammer mill you may not have a clear idea.
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Important Components Of Hammer Mill
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Mix Raw Material Before Pelletizing
No matter the raw material is single or mixed, keeping the consistency of the raw material is very essential for the pellet production in a pellet plant. After the material is milled and dried, a batch mixer is required to blend the raw material evenly. If the raw material is inconsistent, the moisture percentage will be unstable and result in the changes in material density and poor binding properties, which will severely affect the quality of pellets made by an homemade or industrial wood pellet mill.
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Is Sieving Necessary In Pellet Mill Plant?
In the pellet production, the part of raw material particles which are not stuck together to be granulated is called fines. It is internationally recognized that the fine percent of qualified biomass pellets should be lower than 1%. Inadequate pressure inside the pelletizer and insufficient binder is the main causes results in higher percentage of fines. Additionally, if the pellets are not mechanically strong enough, it will easily shatter into fines in the process of delivering or crushing with other pellets. That is to say, the fines percentage of the biomass pellets is an evidence to examine the capability of the pellet machines and the pellet quality.
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The Types Of Dryer for Making Pellets
To make good-quality pellets, the moisture content of the raw material plays an important role in the pelletizing process. Usually speaking, the moisture content ranges at 10-20% is the basic standard at producing qualified pellets. The optimum level is at appropriate 15%. Therefore, to control the moisture content, we need the help from dryer machine.
Rotary/Drum Dryers
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Take Precaution against Fire in Pellet Plant
A large scale pellet plant factory usually needs to keep a substantial quantity of raw material such as woodchip or straw for the need of pellet fuel production, which is easily to cause a severe fire disaster under the condition that the power consumption of pellet mill is very massive. What’s more, with little moisture content, wood pellets are also an inflammable fuel. This kind of news are reported in the TV or Newspaper in recent years. The fire occurs in the pellet plant will bring in horrible consequence. Sometimes it not only bring you great financial loss but also result in massive casualties.
“Precautions averts perils”. Smart businessmen won’t be stingy on the investment of fire precaution. Generally speaking, good fire precaution consists of hardware facility and software facility.
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