The ring die biomass pellet machine is a device used to produce biomass pellet fuel, which mainly uses agricultural and forestry waste such as wood chips, straw, rice husks, etc. as raw materials.

The ring die biomass pellet machine can use a variety of biomass raw materials, such as branches, wood processing waste, corn straw, etc., which helps to improve the utilization rate of wood resources and increase the added value of waste.

The produced wood pellets have a high combustion value, which makes it more economical to use wood pellets as industrial fuel when the price of coal resources rises.

The ring die wood pellet machine is driven by shafts, which improves the technological advancement of pellet manufacturing. At the same time, the pressure wheel adopts multiple uniform distribution designs, which runs smoothly, increases the pressing area, and improves production efficiency. The mold and pressure wheel are made of alloy steel material, which has the characteristics of long service life, reasonable structure, firmness and ease of use.

The biomass pellet making machine is mainly driven by the main motor to drive the reducer.The reducer reduces the motor speed through the speed ratio and drives the pressing roller to rotate through the connected main shaft.The outer periphery of the pressing roller is a ring mold, and biomass materials such as wood chips, straw powder, and wood powder enter the pressing chamber. The roller squeezes the material out of the small hole of the die through mechanical extrusion, and the extruded pellet is cut by the cutter.

Biomass pellet machines are widely used in the fields of biomass energy utilization and feed production. The raw materials for pelleting are diverse, covering plant raw materials, agricultural waste, wood waste and other combustible materials.

Common raw materials for biomass pellet machines used to make feed:

corn, soybean meal, straw, grass, rice husk, wheat, bran, rice bran, oats, soybeans, cottonseed meal, peanut shells, straw, wheat straw, corn straw, weeds, grass, leaves, etc.

Common raw materials for pellet machines used for biomass fuel:

including straw, wood, branches, boards, corn cobs, peanut shells, straw, bark, wheat bran, distiller’s grains, sawdust, wood boards, furniture factory scraps, waste templates, wooden pallets, wooden strips, wood, tree roots, bamboo, board skins, waste mushroom bags, round wood, packaging boxes, etc. are also its processable raw materials. In addition, various wood scraps, crop straw, bamboo chips, palm, caragana, medicinal residues, fungus residues, waste cloth and other combustible materials can also be used as raw materials for biomass fuel pellet machines.

High efficiency and energy saving:
The pelletizing technology adopted by the biomass pellet mill machine can efficiently convert biomass raw materials into pellet fuel, and its production efficiency is several times higher than that of traditional pelletizing methods. At the same time, biomass pellet fuel has high calorific value and high combustion efficiency, which can effectively save energy.

Environmental protection and energy saving:
Biomass pellet fuel can be widely used in industrial and civil fields. The waste gas and waste residue generated by its combustion can be effectively treated and utilized, causing less pollution to the environment, which meets the requirements of sustainable development.

Wide application:
The biomass pellets machine can convert various biomass raw materials into pellet fuel, such as wood chips, straw, reeds, hemp stalks, etc., and has a very broad application prospect, especially in rural areas and areas rich in forestry resources.

Low cost:
The production cost of biomass pellet machine is low, and the production is simple, easy to operate and maintain, so it has become an important equipment in the field of biomass energy conversion.

Heating fuel: Biomass pellets can replace coal for home fireplaces and heating stoves, with high combustion efficiency (more than 80%) and no sulfur and phosphorus pollutant emissions. It is the preferred fuel for winter heating in rural areas, which can reduce the use of traditional firewood.

Industrial boiler/kiln fuel: Replace coal and natural gas, used in boilers in food processing, textile, chemical and other industries, reducing corporate carbon emissions and operating costs. Biomass pellets have stable combustion efficiency and ash residue rate as low as 3-6%.

Power generation field: Used in thermal power plants and biomass gasification power generation to solve the problem of shutting down small thermal power plants. Nordic countries have applied it to cogeneration systems on a large scale.

Animal husbandry: Biomass pellets can be used as raw materials for animal husbandry feed processing to achieve the recycling of waste.

The biomass pellet processing technology mainly includes raw material crushing, drying, conveying, mixing, feeding, molding, cutting, cooling, metering, and packaging. It can be divided into three sections, namely raw material pretreatment section, solid molding section, and auxiliary supporting section, as follows:

1. Raw material pretreatment section

The raw material pretreatment section includes raw material receiving, crushing, drying, mixing, and other processes.

• Raw material receiving: Biomass raw materials are transported from the stockyard to the feeding shed and are stacked in sequence along the feeding conveyor belt to prepare for feeding. At the same time, some raw materials are temporarily stored to ensure that the raw materials are continuously and sufficiently supplied in one shift.
• Coarse crushing: Since biomass raw materials such as crop straw are large in size and cannot be directly used for molding processing, the main task of the coarse crushing process is to crush the larger straw into short and fine granular raw materials for secondary fine crushing.
• Scraper conveying: The raw materials are transported from the crushing process to the fine crusher. After secondary crushing, the particle size is less than 5mm and transported to the raw material warehouse. At the same time, the raw materials can also be naturally dried.
• Lifting and mixing: Use a hoist to temporarily store the raw materials in the raw material bin, install a lifting plate in the bin, stir and mix the raw materials, ensure smooth feeding, and continuous production.
• Screw conveyor: Ensure continuous and uniform feeding.

2. Biomass pelleting section

The solid molding section includes tempering feeding, pelleting, cutting, and other processes.

• Tempering feeding: Temper and mix the powder in the raw material bin, and continuously and stably convey it to the biomass pelletizing machine.
• Solid molding: The raw materials are extruded and molded by the biomass pellet machine.
• Cutting: A cutter with adjustable gap is installed in the pellet machine, and the extruded fuel is cut according to user needs for easy packaging, storage, and transportation.

3. Auxiliary supporting section

The auxiliary supporting section includes cooling, dust removal, air compression, water addition, metering, and packaging, and other processes.

• Cooling: The temperature of the molded fuel just out of the biomass pelletizer machine is 75-85℃, which is easy to break and not suitable for storage and transportation. The task of the cooling process is to cool down the high-temperature fuel after processing and molding so that its temperature can reach the conditions for packaging and storage. The whole process is equipped with a combined cooler to remove the heat and moisture of the solid molding fuel through the cooling process.
• Dust removal: Cyclone separation and pulse dust removal are used to remove dust during the production and processing process to meet national standards.
• Adding water (Optional): According to the characteristics and moisture content of the raw materials, appropriate water is added to adjust the humidity to meet the requirements of biomass pelleting.
• Measuring and packaging: The finished product is measured to achieve machine packaging.

1. Raw Material Preparation Equipment
The biomass pellet raw material preparation equipment mainly includes silos, conveyors, crushers and dust collectors. The function of these equipment is to collect, transport, crush and remove dust from biomass raw materials so that they can enter the next process better.

When selecting raw material preparation equipment, it is necessary to select the appropriate equipment model and configuration according to the characteristics of the raw materials and the production capacity of the pellet machine.

2. Biomass Pellet Machine
The biomass pellet making machine is the core part of the complete set of biomass pellet line equipment. It can compress the processed biomass raw materials into pellets of various specifications.

The pellet machine usually includes parts such as pressing rollers, molds, transmission devices and heating systems. When selecting a small pellet machine for biomass, factors such as the specifications, output, and quality and efficiency of the pellets need to be considered.

3. Cooling Equipment
The pressed biomass pellets have a high temperature and need to be cooled by cooling equipment for better storage and use. Commonly used cooling equipment includes natural coolers and forced coolers. Select the appropriate model and configuration according to your needs.

4. Packaging Equipment
The biomass pellet packaging equipment includes packaging machines, weighing devices and conveyor belts, which are used to measure, package and transport the cooled biomass pellets. When selecting packaging equipment, factors such as pellet specifications, packaging materials and packaging methods need to be considered.

5. Auxiliary Equipment
The complete set of biomass pellet machine plant also includes some auxiliary equipment, such as dust removal equipment, safety equipment, electrical control system, etc.

The role of these equipment is to ensure the smooth progress of production and environmental protection requirements. When selecting auxiliary equipment, factors such as production process, environmental protection requirements and the need for safe production need to be considered.

In the construction of a biomass pellet production line, choosing a suitable biomass pellet granulator machine requires considering multiple factors, including the type of raw materials, requirements for biomass pellet products, output requirements, working environment, operating costs, etc.

The following are some suggestions to help you choose a suitable biomass pellet machine in the construction of a biomass production line:

1. Understand the characteristics of raw materials:
   Before choosing a biomass pelleting machine, you need to have a detailed understanding of the raw materials to be used. This includes the moisture content, thermal conductivity, and other characteristics of the raw materials, which will directly affect the selection of the biomass pellet machine and the pelletizing effect.
2. Determine the pelleting requirements:
   Clarify the requirements for biomass pellets after pelleting, output requirements, and pelleting efficiency. These requirements will help you choose the appropriate type and configuration of biomass pellet machines.
3. Choose the right type of biomass pellet machine:
   Choose the right type of biomass pellet machine according to the characteristics of the raw materials and the pelleting process requirements. For example, for raw materials such as rice husks, palm shells, sawdust, peanut shells, and bamboo, if they are used to process biomass fuel pellets, you need to choose an biomass pellet machine (without a conditioner); for raw materials such as forage, straw, alfalfa, and elephant grass, if you want to process biomass feed pellets, you need to choose a forage biomass pellet machine (need to be equipped with a conditioner).
4. Consider the working environment:
   Consider the working environment of the biomass pelletizing machine, such as temperature, humidity, dust, etc. These factors will affect the service life and maintenance cost of the biomass pellet machine, so you need to choose a biomass pellet machine that can adapt to harsh working environments.
5. Evaluate operating costs:
   When choosing a biomass pellet press machine, in addition to considering the purchase cost of the equipment, you also need to consider the operating costs of the equipment, such as maintenance costs, energy consumption costs, and replacement costs of wearing parts. Choosing a biomass pellet machine with good cost-effectiveness will help reduce operating costs.
6. Reference experience and technical support:
   When choosing a biomass wood pellet machine, you can refer to the experience and technical support of other similar projects. Understand the after-sales service and technical support capabilities of the biomass pellet machine manufacturer to ensure that you can get timely technical support and maintenance services during use.