Tips to Choose a Biomass Pellet Machine
A wood pellet machine, also called a pellet mill, is used to produce small-sized wood pellets from biomass. Its main function is to turn biomass into pellets by mechanical compression under high temperatures. This process creates pellets with a specific surface area greater than 1200 square centimeters per gram. To ensure the quality of the final products, pellet mills are designed to screen the material after it is pelletized. Listed below are some tips to choose a wood pellet machine.
The housing of the wood pellet mill is fabricated with fab welds to provide stealth and strength. Its gearbox is a heavy-duty worm design, which is considered the most indestructible design. A stationary case-hardened die and rollers are also features of a high-quality pellet mill. The longer the materials are in the pellet mill, the more uniform the finished product. Some wood pellet machines also feature damping devices to prevent noise.
Pellet mills are complex machinery. It is essential to train workers before running the machine. A machine without spare parts is a costly investment. If you don't understand how to maintain it properly, you could end up wasting money and time. Some pellet machines are made by Chinese manufacturers, but many of them are rebranded and assembled in China. Hence, you'll need to take the time to buy a quality machine from a reliable supplier.
Pellet mills are available in two main types: die-turned and roller-turned. The roller-turned pellet mills are larger and feature more efficiency in terms of output. Die-turned pellet mills are lower in cost and are easier to operate and maintain. Both types can produce high-quality pellets. The flat-die pellet mill is popular among home users, farmers and small fuel production plants. They are simple to use and maintain. This makes them an ideal choice for home users.
The types of raw materials you can use to make animal feed pellets include corn, alfalfa, wheat bran, grass, rice, beans, and oil cake. It's best to pulverize the raw materials before grinding them in the pellet mill. This way, you'll ensure that the pellets are free of minus 0.6 mm fines. A satisfactory commercial pellet contains more than ninety percent plus six-millimeter material.
A straight-grate system, on the other hand, consists of a single unit with a moving grate. This system provides excellent temperature control and consistently uniform pellet quality. Fuel consumption ranges from seventy to one hundred Mcal per ton of standard pellets, while fluxed pellets use about sixty percent more fuel. Power consumption is low, ranging from the balling process to pellet load out, and is around 23 kWh per ton.
The quality of pellets depends on the nature and composition of the ore. The type and amount of fluxes, as well as the degree of gangue, will influence pellet quality. The form and size of the ore particles and the bonding they create during induration are critical factors in pellet quality. These factors may also influence the MgO content and CaO/SiO2 ratio. These are important considerations when selecting a pelletizing machine.
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