Rice Husk Pellet Machine

Rice husk pellet machine is used for making rice husk pellets. The production of energy by means of biomass has shown a clear trend towards the use of pellets due to their homogeneous size, which facilitates handling and feeding while also reducing costs associated with storage and transportation.

The rice husk pellet quality depends on the properties of the raw materials and on the operative variables of the rice husk pellet machine and pellet plant process. Quality parameters can be modified by adapting the process to the raw material to be pelletized by rice husk pellet machine.

Whereas wood pellets from forestry residues already have successfully established technologies and markets, there is a need to develop the pelletization of agricultural biomass, which is periodically planted and harvested, and holds great energy potential, especially in rural areas. Among them, rice husk is a very common agricultural waste.

• Fuel in power plant.
• As padding (material for fermented mattress).
• Formation of active carbon.
• Source of silicon dioxide and silicon dioxide compound.
• As fodder.

• High heating value. The density of the shaped rice husk pellets is (1.0-1.3) t/m3 and the heating value is (3500-4000) kcal/kg, whose market price is 750RMB per ton.
• The raw material is more abundant and the cost is low relatively.
• Crushing and drying is not necessary for the processing, and only with one rice husk pellet machine and pelletizing line can the production process, which can decrease the equipment investment.
• With low cost, the production power consumption for one ton of rice husk pellet machine is below 60 degrees of electricity.
• No smoke produced in the processing is good for the environment.
• It is convenient to reserve and transport.

• Advanced gear-driving system with motors on this rice husk pellet machine, stable and reliable.
• Adopting high-qualified components on this rice shell pellet mill, with stable performance, long service life and low noise.
• Whole transmission parts (including motor) of this rice husk pellet making machine chooses high-quality SKF bearings to ensure the transmission efficient, stable, low noise. Main motor choose Siemens.
• This rice husk pellet machine is equipped with full single layer stainless steel feeder, forced feeder, ring die and cutter.
• Adopting international advanced technology on this rice husk pelletizing machine: German gun drill and vacuum furnace heat manufacturing process in ring die making to ensure the pellets smooth and of high quality.

It is caused by squeezing raw materials such as rice husk and straw under pressure at normal temperature by using rollers and ring die rice husk pellet machine. Convenient transportation and storage, meanwhile, its fuel performance is greatly improved.

The particle size of rice husk raw materials can be divided into coarse particles, medium particles and fine particles. Above 3.0 is coarse grain. Medium and fine granules have better granulation properties, low energy consumption and less wear on the die roll.

When medium and fine granules are quenched and tempered, they have more surface area than coarse grains in contact with steam, and steam easily penetrates the particles. The core makes it fully mature, produces physical and chemical changes, and improves granulation quality.

Coarse particles cannot be completely penetrated by steam; in addition, when coarse material is granulated, the surface area of ​​contact with each other is less than that of medium and fine particles, and the adhesion is poor. After granulation, the particle swelling rate is large and cracks easily; High density, good ability to pass through die holes, less wear on die holes, and high productivity.

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Pellet fuel is made of sawdust, crop straw, rice husk, peanut shell and other agricultural and forestry production residues as raw materials, and is compressed into rod-shaped, granular and solid shaped pellet fuel by the physical method of rice husk pellet machine.

It's just that many pellet production users find that sometimes the pellet shape is unsatisfactory during production. Experienced masters know that the moisture content of the raw material, the compression ratio of the rice husk pellet machine ring die, and the particle size of the raw material may affect the pellet forming rate and density.

The rice husk raw material with a diameter of ≤7mm is selected as the experimental material, and the MZLH420 rice husk pellet machine is used as an example:

The moisture content of the raw material has a great influence on the forming rate of the rice husk pellets. Appropriate moisture content helps the softening and bonding of the lignin in the rice husk raw materials, and promotes the formation of chemical bonds such as hydrogen bonds between the rice husk raw materials.

It is beneficial to the lubrication between the rice husk raw material and the ring die during compression molding; however, if the moisture content is too high, the moisture will form tension between the raw materials and expand the gap between the raw materials, thereby increasing the repulsion between the raw materials, hindering the contact between the raw materials, reducing the the intermolecular force reduces the molding rate significantly.

The moisture content of raw materials has a significant effect on the molding rate of granular products. This time, the compression ratio of the ring die is 1:5.5. Considering factors such as energy consumption, production efficiency, product cost and product quality, the optimal moisture content is 11%-12%.

Different biomass raw materials, different pellet machines, and different biomass pellet production processes have corresponding changes in the appropriate moisture content of raw materials. In addition, factors such as energy consumption and production costs should be fully considered. The moisture content of common raw materials is mostly 11%-18%.

• If the moisture content is too high, the mold blocking and slipping phenomenon will occur after the raw material enters the rice husk pellet machine ring die, which will block the die hole and cause the pellets to not be produced; if the moisture content is too low and too dry, the It is not easy to form, and the viscosity is not enough, which affects the quality of the pellets.
• If you are planning to start making your own pellets from rice husk or rice straw, and need some more suggestions and guidance. Don't hesitate to send us an inquiry and tell us your capacity requirement, then we can help you choose the most suitable and cost effective rice husk pellet machine.

Whether the material has been crushed or not , it can both produce pellets very well. Just a little difference with the final capacity. The capacity will be a little bigger if the material is crushed. The final production capacity will be a little bigger if the material is crushed by the hammer mill or crushing machine.

• Ring Die Pellet Machine is Better for Processing Rice Husks/Hulls:
  We suggest choosing our ring die rice husk pellet making machine for making rice husk pellets. The final result is better compared to the flat die rice husk pellet machine.
• The moisture content is suggested to be around 20%:
  The final result of the running test is just related to the moisture of the material ( best suitable moisture for your material is 20%) and the compression ratio of the die( the most important reason).

The followings are complete rice husk pellet production process:

01

Cleaning & Sieving

During the cleaning and sieving process, foreign objects are removed from the raw material. Sievers or screeners will get rid of the dust or other impurities in the rice husk to protect the rice husk pellet mill machine in the pellet production line and also to ensure the pellet quality eventually. To optimize the production of granules as much as possible, it is suggested to reduce the size of the rice husk. For this hammer mill is the equipment needed.

02

Drying Section

The humidity percentage of the rice husk must be reduced from approx 80-90% to not more than 12-13%. The machine could be a rotary drum drier or a belt drier and has a burner that can be alimented with oil, gasoline, gas or wood.

03

Grinding Section

Grinder or hammer mills will reduce the size of rice husk and make it into fine power which will be ready for pellet production. After drying a refiner rice husk crusher hammer mill, complete with aspiration unit, reduces the dimensions of the product and prepares it for pelleting. The product is also cleared from any ferrous part.(In many rice husk pellet manufacturing cases, the rice husk does not need to be crushed.)

04

Mixing Section

A mixing silo make the product homogeneous and in this silo the product can be stocked.

05

Pelleting Section

Rice husk pellet machine will compress the rice husk power into fuel pellets. The material is entering in the rice husk pellet making machine passing through the conditioner. Here other ingredients could be added, before the material goes into the pellet pressure chamber to be transformed into pellets by the die. On the outside of the holes some knives cut the rice husk pellets at the desired length.

There are flat die pellet machines for small scale production below 1000kg/h. Ring die pellet machines are suggested for larger production (1-90t/h). Richi Machinery aims to minimize operating costs and maximize quality with the ring die series straw pellet machine, which has a long-lasting and more rigid structure, specially designed for rice husk pelleting.

06

Cooling section

After pelleting by rice husk pellet maker, the product is very hot, therefore it's necessary to cool the product at approximately +5°C in respect to the room temperature, in order give it the right hardness and the best consistence to store and handle it.

The rice husk making equipment in this section is a counter current cooler complete with air aspiration line the recovery of dust.

07

Screening section

In this phase the product is cleaned from the dust, which is brought back into the production cycle.

08

Packing section

The pelleted rice husk product is conveyed to the silo for storage before delivery. It can be delivered in bulk, loaded on trucks or packed in sacks or big-bag. The machines for packaging could be manual, semi-automatic or automatic, based on the requested production. Packing machine will package the rice husk pellets into bags with different specifications based on requirements. Packing is included in most medium to large scale pellet production lines. 

You can make an appointment at any time for the solutions you need, and request our expert team to return to you at any time! The following are a few typical rice husk pellet plant and biomass rice husk pellet production line business plan and solutions we have done:

Richi Machinery have provided 1-40t/h rice husk pellet production lines, biomass pellet manufacturing plants and single biomass pellet making machines for hundreds of biomass pellet manufacturers, and we hope that in the future, we can also help you successfully realize a high-efficiency, high-quality, and high-return biomass pellet production business.

The followings are some rice husk pellet plant project proposal / rice husk pellet business plan/ rice husk pellet manufacturing project report for you:

• 

  1-1.5T/H biomass pellet production business plan

• 

  8T/H business plan on rice husk pellet production

• 

  100 Tons/day Rice Husk Pellet Manufacturing Plant Project

• 

  400 Tons/day Biomass Rice Husk Pellet Factory Project

The capital costs of complete rice husk pellet plant would be various in different regions around the globe. Deloitte research has a study resulting of capital costs for pellet plant in EU, are placed as follow:

1. Daily Operating Cost: $125 for each ton
2. Labour cost: $10 for each ton (the price is subject to change depending on the capacity)
3. Energy cost: $10 for each ton
4. Maintenance cost: $5 for each ton
5. Repairs and lifecycle maintenance cost: $5 for each ton
6. Transportation for bulk shipments cost: $2.5 for each ton
7. Cost of pelletizing equipment: $3-4 million (Complete rice husk pellet plant machinery includes crushing machine, drying machine, rice husk pellet machine, pellet cooling and packaging machine, etc).
8. Pellet warehousing, rail car loading facility cost: $2 million

Richi Machinery can also provide you turnkey solutions with other kinds of approach if the above capitals does not suit your requirements. And our customized biomass machinery would greatly reduce the cost to set up a rice husk pellet production line. If you are interested in opening a rice husk pellet manufacturing factory, we are also happy to offer your the customized quotation!

It has come to a conclusion that to overcome the consistently increasing demand for wood pellets would be a profitable business if you pay attention to details.

If you want to buy rice husk pellet machine or start a rice husk pellet plant and manufacture high grade pellets fuel that would compete well in global market by reducing the variable costs, capital input and cost of production, we are here to give you 3 additional tips that might as well assist your business swiftly;

• Obtain the government and industry grant and permits;
• Build a team with experienced recruit and well managed them;
• Update your knowledge about the latest wood pellet technologies;
• As for lastly friendly advice, do take care of our natural resources by maintaining the safety of rice husk pellet manufacturing process, raw material harvesting and waste control.

Now rice husks are collected and transported from various rice mills to rice husk pellet machine plant for rice husk pellets production for the following advantages of rice husk pellets:

1. Good to environment

   Rice husk pellets made by rice husk pellet machine as a biomass fuel will ease the environment pressures caused by fossil fuel combustion. Comparing with the burning of rice husk, the burning of rice husk pellets is much more clean. The ash content is around 15 to 16 % when burning directly which will be largely decreased to 6 to 7 % when it is burned in pellet form.

2. Convenient

   Rice husk pellets made by rice husk pellet machine are highly densified and compacted into small size, which make their storage and transportation much easier and convenient. On the other hand, the small, regular and uniform shaped rice husk pellets make the feeding of automated heating system more easily.

3. High effectiveness

   Comparing with burning directly, rice husk pellets can burn longer and the combustion rate of rice husk pellets can be above 95%. The characteristics comparison of rice husk and rice husk pellets are shown is the below form, for your reference:

   Comparing with wood, rice husk pellets is also proved effective. Rice husk pellets has a low moisture content of 7 to 8%, which doesn’t need to consume energy to burn it off, making the burning of rice husk pellets effective.

4. Wide application.

   Rice husk pellets made by rice husk pellet machine can be applied in many appliance. It can be burned in heating furnaces, boilers, pellets stoves and traditional stoves, and other heating systems.Nowadays, biomass pellet fuels are widely used in industrial production, power generation, home heating and central heating.
   

   In conclusion, rice husk pellets made by rice husk pellet machine have many advantages over fossil fuel and bulky rice husk materials. If you have stable source of rice husk and want to make profit from it, making rice husk pellets is an excellent choice. If you have intention to engage in pellets production or questions on biomass business, welcome to send us enquiry in the form below.