Yes, but it requires a complete system approach. A biomass wood pellet machine cannot process material with 50% moisture directly. For such wet pine sawdust, you would need a robust drying system upstream to reduce moisture to the optimal 12-18% range before pelleting.

Our engineers would design a line integrating a high-capacity drum dryer, ensuring the dried sawdust is consistently fed into our heavy-duty MZLH series pellet mill. This ensures stable pellet formation and prevents damage to the ring die and rollers from steam pressure and poor compaction.

For a 2 t/h plant processing a 50/50 mix of abrasive rice husk and fibrous straw, we recommend the MZLH520 or MZLH678 model, depending on your exact material preparation. This mix requires a machine with strong torque and a wear-resistant ring die.

The MZLH520 (132KW) is an excellent choice for 1.5-3.0 T/H capacity. We would specify a ring die with a suitable compression ratio and material (e.g., high-chrome alloy) to handle the abrasiveness of the husk while effectively compacting the straw. A preconditioning step to add slight moisture/steam can greatly improve the binding of the straw fibers.

Yes, producing high-quality 10mm pellets from dense hardwood like oak requires a specially configured ring die. The die would have 10mm holes with a specific compression ratio (length-to-diameter ratio) calculated to create enough friction and pressure to properly soften the oak’s lignin and form a durable pellet.

Using a standard die for softer woods would likely produce crumbly pellets from oak. Our technical team will determine the optimal die specification based on your oak chip particle size and moisture content to ensure high output and pellet integrity.

Absolutely, but with careful system design. Both are extremely hard and abrasive. A single production line can be designed to process them, either separately or in a blend.

The key is the preparation stage: a heavy-duty hammer mill with replaceable, hardened hammers and screens is essential to reduce them to a consistent, small particle size (e.g., below 3mm).

The core biomass wood pellet machine, such as the MZLH768, must be equipped with a super-hardened ring die (like a stainless steel or high-chrome alloy) and matching rollers. The same line can process both by adjusting the mill screen size and potentially the die specification for optimal results with each material.

Wet coffee husks require drying and fine grinding.

Fresh coffee husks have high moisture. The first step is drying them down to 12-15% moisture using a rotary dryer. After drying, they become brittle but still fibrous. A secondary fine grinding step using a hammer mill with a small screen (e.g., 2-3mm) is crucial to break down the fibers and create a uniform powder.

This fine, dry material will then pelletize efficiently in a biomass wood pellet machine, producing dense, high-energy fuel pellets. We design complete lines that integrate drying, grinding, and pelleting seamlessly for coffee processing waste.

Yes, we provide complete systems for processing municipal green waste (MGV) into RDF (Refuse-Derived Fuel) or SRF (Solid Recovered Fuel) pellets.

The process is more complex than clean wood. It requires robust pre-processing: primary shredding, magnetic separation to remove metals, often screening to remove fines or sand, and efficient drying due to high moisture.

The prepared, cleaned material is then fed into a heavy-duty biomass wood pellet machine like the MZLH768. We engineer these lines with durability and contamination tolerance in mind, ensuring reliable operation with heterogeneous feedstock.

You can typically pellet wheat straw without an active dryer if its natural moisture content is between 12% and 16%. Straw below 10% moisture becomes too dry and brittle, leading to poor binding and excessive dust. If your straw is harvested and stored under cover, it may naturally fall within this range.

However, for consistent year-round production, integrating a dryer provides control. Our engineers can assess your specific straw supply chain. If moisture is consistently suitable, we can design a line focusing on fine grinding and effective conditioning to optimize the natural moisture for the biomass wood pellet machine.

Yes, we have specialized solutions for composite pellets like cat litter. A mixture of bentonite (clay) and sawdust requires precise proportioning and mixing.

We would design a cat litter production line with a weigh-batching system, a paddle mixer to homogeneously blend the dry materials, and potentially a small conditioner to add a precise amount of moisture or binding agent.

The blend is then fed into a biomass wood pellet machine fitted with a 6mm ring die. The key is balancing the recipe and the die’s compression ratio to produce pellets that are firm yet highly absorbent and have low dust. We offer complete plant designs for such specialized products.

The core pelleting principle is similar, but critical differences exist. For animal feed pellets (e.g., alfalfa):

1) Conditioning is Vital: A high-shear conditioner adds precise steam to cook the starch/proteins, improving digestibility and binding.

2) Die Specification: Dies for feed often have a different compression ratio optimized for nutritional quality over pure density.

3) Post-Processing: Feed pellets require faster, more gentle cooling to prevent nutrient degradation and often a coating system.

4) Hygiene Standards: Equipment design considers easier cleaning. For fuel pellets, conditioning is simpler (often just moisture adjustment), and the focus is on density and durability.

Our engineering team tailors the entire line design—from grinding to cooling—based on the pellet’s end use.

To process 500 tons per month, we assume about 20 operating days per month, which is 25 tons per day. For an 8-hour shift, that’s approximately 3.1 tons per hour. For a 16-hour shift, it’s about 1.55 tons per hour.

Considering efficiency and downtime, we would recommend a biomass wood pellet machine with a capacity of 3-4 T/H for single-shift operation (e.g., MZLH678 or MZLH768) or a 1.5-2.5 T/H machine (e.g., MZLH420 or MZLH520) for double-shift operation.

The final choice depends on your chip moisture, species, and desired pellet quality. A Richi Machinery engineer can provide a precise recommendation based on your specific parameters.

Yes, 100% shredded paper and cardboard can be pelletized into excellent fuel pellets. The key challenges are low bulk density and potential for high ash content (from inks, coatings). The process requires a powerful shredder/coarse grinder first, followed by a fine hammer mill to create a fluffy material.

A densification feeder may be needed before the pellet mill. The biomass wood pellet machine must generate significant pressure to compress the material; models like the MZLH520 or MZLH678 are well-suited. The natural lignin in paper acts as a binder when heated by friction. The resulting pellets have high calorific value and are ideal for industrial boilers or RDF applications.

For high-quality, durable hay pellets for horses (feed grade), a conditioner is highly recommended and often essential. Steam conditioning accomplishes several things: it softens the tough hay fibers, partially gelatinizes starches (if any grains are present), increases moisture uniformly, and kills potential pathogens and mold spores.

This results in pellets that are more digestible for the horse, have a longer shelf life, and are much harder and less prone to crumbling during handling and transport. A standard biomass wood pellet machine can be paired with an appropriate feed-grade conditioner in our complete plant design.

The output using 100% sunflower hulls in a given biomass wood pellet machine will be slightly lower than with clean wood sawdust due to their abrasive nature and lower natural binding properties.

For example, our MZLH768, which can produce 3-8 T/H with wood, might achieve 3-6 T/H with sunflower hulls, depending on their moisture content and fineness.

To maximize output, the hulls must be finely ground and have optimal moisture (12-15%). We select a ring die with a compression ratio tailored for oilseed shells to ensure good pellet quality without excessively slowing down production or causing undue wear.

Processing highly abrasive materials like PKS requires adjustments focused on wear resistance and preparation.

1) Grinding: Use a hammer mill with tungsten carbide-tipped hammers and hardened screens.

2) Pellet Mill Components: The biomass wood pellet machine must be fitted with a ring die and pressure rollers made from the most wear-resistant alloys available (e.g., high-chrome steel).

3) Die Specification: A slightly lower compression ratio can sometimes help reduce extreme friction and wear, while still making a good pellet.

4) Maintenance Plan: Factor in more frequent inspection and replacement of wear parts.

Our proposals for PKS lines always highlight these specialized, durable components.

Yes, our biomass wood pellet machines supplied to Vietnam and other regions are well-suited for acacia wood, which often has higher sap/resin content. The sap can act as a natural binder, which is beneficial. However, it can also cause material to stick in the feeder or die if not managed.

We address this by ensuring our forced feeder system is designed to handle slightly sticky materials and by selecting a ring die with an appropriate hole pattern and surface finish to promote smooth release. Proper drying of the acacia to around 12% moisture is also critical to control the sap’s behavior during pelleting.

As a general rule, softwoods (like pine, fir) require a higher compression ratio die than hardwoods (like oak, maple). Softwoods are less dense and have longer fibers, so they need more compression length within the die hole to create enough friction and heat to melt the lignin and form a firm pellet.

Hardwoods are denser and can form pellets under slightly less compression. For example, pine might need a compression ratio of 1:6 to 1:8, while oak might work well with 1:5 to 1:7. At Richi Machinery, we test your specific material sample to recommend the precise ring die specification for your biomass wood pellet machine.

Yes, producing 8mm pellets from a sawdust and rice husk mix is very feasible. You will need a biomass wood pellet machine fitted with an 8mm ring die. The die’s compression ratio must be chosen to balance the binding properties of the sawdust with the abrasive, less cohesive nature of the rice husk.

A uniform mix and consistent particle size (both materials finely ground) are crucial. The rice husk content will increase wear on the die and rollers, so we recommend specifying wear-resistant alloy parts for such applications to maintain productivity and pellet quality over time.

Particle size of corn stover dramatically affects final pellet quality. If the stover particles are too large (>6mm), the pellets will be weak, have a rough surface, and may break apart easily due to poor interlocking.

If ground too fine into almost dust (<1mm), it can be difficult to feed consistently into the die and may require more binding agent. The ideal is a graded mix, with most particles between 1mm and 4mm.

This allows smaller particles to fill the voids between larger ones, creating a dense, solid pellet in the biomass wood pellet machine. Proper grinding is the single most important pre-processing step for corn stover.

A complete 5 T/H wood pellet line requires several essential auxiliary pieces beyond the core biomass wood pellet machine:

1) Hammer Mill: For grinding raw material to correct size.

2) Dryer: Likely a rotary drum dryer to reduce moisture to 12-15%.

3) Cyclone & Dust Collector: For material transfer and workshop air quality.

4) Bucket Elevators/Belt Conveyors: For material transport between machines.

5) Counterflow Cooler: To cool hot pellets after the mill.

6) Rotary Screener: To remove fines from finished pellets.

7) Storage Silos & Bins: For raw material and finished product buffer.

8) Electrical Control Cabinet: To coordinate the entire system.

Richi Machinery supplies all these components as a synchronized turnkey plant.

Designing a line to switch between fuel and feed pellets is complex but possible with significant upfront planning and investment. It requires a versatile conditioning system that can switch between steam addition for feed and simple moisture adjustment for fuel.

The biomass wood pellet machine itself can be the same, but you would need interchangeable ring dies with different compression ratios and hole sizes optimized for each product. The cooling, screening, and possibly bagging systems would need to handle different pellet characteristics.

Crucially, for feed production, the line must be designed to meet higher hygiene standards, with easy-clean surfaces. This is a highly customized project our engineers can explore with you.

Producing RDF pellets from municipal solid waste (MSW) involves extensive pre-processing not needed for clean biomass. Key differences:

1) Sorting & Shredding: MSW requires primary shredding, magnetic separation (for metals), and often air classification or screening to remove non-combustibles like glass, stones, and high-chlorine materials.

2) Secondary Shredding: Refined waste is shredded again to a uniform size.

3) Drying: Essential due to high and variable moisture.

4) Pelleting: The prepared RDF fluff is pelleted in a heavy-duty biomass wood pellet machine built to handle contaminants and varying material composition. The focus is on producing a consistent, marketable fuel from a highly variable feedstock.

Processing dusty materials like dry bagasse requires integrated safety features to prevent fire and dust explosions:

1) Dust Collection: A high-efficiency cyclone and bag filter system must be installed at every dust generation point (hammer mill, cooler, screener, transfer points).

2) Explosion Venting: Dust collectors and silos should have explosion vents or suppression systems.

3) Electrical Equipment: All motors, starters, and control cabinets should have a high protection rating (e.g., IP65) or be placed outside dusty areas.

4) Grounding: All equipment must be properly grounded to prevent static spark ignition.

5) Fire Detection: Thermal sensors in dryers and dust collectors. Our plant designs for dusty materials always prioritize these safety systems.

Yes, we offer integrated energy solutions. A very efficient setup is to use a biomass-fired boiler to generate the hot air for your raw material dryer and provide space heating for your plant. The fuel for the boiler can be your own production fines (screenings), low-quality feedstock, or a portion of your pellets.

We can design the thermal system, specifying the boiler and integrating the hot air ducting with the dryer. This significantly reduces your operational energy costs and creates a closed-loop, sustainable production model. Our engineering covers the entire process, including such energy integration optimizations.

Eucalyptus bark is very abrasive due to its high silica content. The lifespan of a standard alloy ring die processing 100% eucalyptus bark could be as low as 300-400 hours.

However, by using our premium-grade, high-chrome or tungsten carbide alloy ring dies specifically designed for abrasive materials, you can extend this lifespan to 600-800 hours or more, depending on the bark’s purity and your machine maintenance.

Regular die rotation and using matched, high-quality rollers are also essential to maximize life. We provide specific wear-part recommendations for challenging materials like eucalyptus bark.

Standard ring die biomass wood pellet machines produce cylindrical pellets. Producing square or other shaped briquettes (like hexagons) requires a different type of machine called a briquetting press or extruder, which uses molds to form the shape under high pressure.

While we specialize in ring die pellet machines, we can advise on briquetting technology for specific applications where shape is a market requirement. For most fuel and feed applications, the cylindrical pellet is the standard due to its excellent handling, burning, and storage characteristics.

For high-capacity lines (8-15 T/H), a vertical counterflow cooler is the industry standard and most efficient method. Pellets enter the top of a tall column and cool gradually as they descend against a stream of ambient air drawn upwards by a fan.

This design is space-efficient, provides uniform cooling, and minimizes pellet breakage compared to horizontal rotary coolers. It effectively reduces pellet temperature from 70-90°C out of the biomass wood pellet machine down to within 5-10°C of ambient temperature, stabilizing them for storage and preventing condensation in bags.

Pellet density is controlled by several interconnected factors in the biomass wood pellet machine process:

1) Raw Material: The inherent density of the biomass.

2) Particle Size: Finer grinding generally allows for higher compaction.

3) Moisture Content: Optimal moisture (12-18%) allows lignin to plasticize.

4) Die Specification: The compression ratio (L/D ratio) of the ring die is the primary mechanical control—a higher ratio creates denser pellets.

5) Die-to-Roller Gap: A properly adjusted, small gap ensures full pressure is applied.

6) Feed Rate: A consistent, optimal feed rate maintains steady pressure. Our process engineers help you balance these variables for your target density.

For a 1 T/H plant, while not strictly “necessary,” a small raw material storage silo (e.g., 20-30 cubic meters) and an automated feeding system (screw conveyor from silo to hammer mill) are highly recommended investments.

They provide several benefits: buffer storage to ensure continuous operation even when raw material delivery is intermittent, reduced manual labor, more consistent feed rate to the hammer mill and dryer (which improves overall system stability), and better control over material flow into the biomass wood pellet machine.

They significantly improve the professionalism, efficiency, and reliability of even a small-scale operation.

For a straw pelleting plant, we recommend a centralized dust collection system. This consists of dust hoods at all major emission points (hammer mill inlet/outlet, straw dryer discharge, cooler discharge, screener, transfer points), connected via ducting to a high-capacity pulse-jet baghouse filter.

Straw dust is very fine and combustible, so the filter should have explosion venting. The clean air is exhausted, and the collected dust can be automatically returned to the process (e.g., before the pellet mill) to maximize yield. Proper dust control is critical for operator health, safety, and equipment longevity in a straw plant.

Yes, we design and deliver fully automated biomass pellet plants.

Automation can include: raw material intake via conveyor from truck dump, automated batching and mixing, process control via PLC (Programmable Logic Controller) with touchscreen HMI, automatic adjustment of dryer temperature based on moisture sensors, synchronized speed control of all conveyors and the biomass wood pellet machine, and automated weighing and bagging (into big bags or 25kg sacks).

The level of automation is tailored to your budget and labor strategy, but we can provide solutions ranging from semi-automatic to fully lights-out production facilities.

After screening, typically 3% to 8% of the total pellet production may be fines (broken pellets and dust). This percentage depends on pellet durability, handling, and the screener efficiency. The great news is that 100% of these fines can and should be recycled.

They are typically fed back into the process, either directly into the conditioner ahead of the biomass wood pellet machine or mixed with fresh raw material. Recycling fines improves overall yield, reduces waste, and because they are already dry and finely divided, they can actually improve the pelleting process. Our system designs always include fines recycling loops.

Materials with high chlorine (e.g., wheat straw from certain regions, MSW) can cause corrosion when combined with moisture, particularly in the dryer and exhaust systems. We combat this by:

1) Material Selection: Using stainless steel or special coatings for critical parts of the dryer, ducting, and cyclone contacting hot, wet gases.

2) Temperature Control: Operating the dryer at temperatures that minimize acid dew point corrosion.

3) Rapid Cooling & Drying: Quickly drying and cooling the pellets to minimize the time they release corrosive vapors.

4) Ventilation: Ensuring good general ventilation in the production hall. This is a key consideration in our corrosion-resistant plant designs.

The most effective way to add a dry powder binder like starch is via a continuous dosing system. This consists of a small storage hopper for the binder, a precision screw feeder (loss-in-weight feeder is best), and a injection point into a paddle mixer or conditioner before the biomass wood pellet machine.

The binder must be thoroughly and uniformly mixed with the biomass for it to be effective. For liquid binders, a precise metering pump and spray nozzle system are used. We integrate these dosing systems into our plant designs when binders are required for specific materials or to meet premium pellet quality standards.

Yes, our biomass wood pellet machines installed in Indonesia and elsewhere are excellent for processing mixes of Empty Fruit Bunch (EFB) fibers and wood waste. This is a common and logical mix. The wood waste provides density and natural binding lignin, while the EFB utilizes a major waste stream. The EFB must be shredded and dried thoroughly.

The mix ratio can be adjusted to optimize pellet quality and machine wear. A model like the MZLH768 is well-suited for such high-volume, industrial-scale production in the palm oil region, and we equip it with components to handle the abrasive nature of the EFB fibers.

Dryer capacity is calculated based on the amount of water that needs to be evaporated per hour. The formula is: Evaporation (kg/h) = Throughput (kg/h) x [(Initial Moisture% – Final Moisture%) / (100 – Final Moisture%)].

For example, to dry 2000 kg/h of wet sawdust from 50% to 15% moisture: Evaporation = 2000 x [(50-15)/(100-15)] = 2000 x (35/85) ≈ 824 kg of water per hour.

You would then select a dryer (e.g., rotary drum) rated for at least 900-1000 kg/h evaporation to provide a safety margin. Our engineers perform this calculation as part of the complete system design for your biomass wood pellet plant.

Yes, we design and manufacture mobile and containerized pellet production units. These are ideal for demonstration, pilot projects, or processing biomass in remote locations.

Key components like the hammer mill, biomass wood pellet machine (e.g., MZLH420), cooler, and control system are integrated into one or two standard shipping containers or onto a heavy-duty trailer.

These units are pre-assembled and tested at our factory, requiring only basic utility connections on-site. They offer a quick-start, flexible solution for specific projects where a permanent building is not feasible or for testing feedstock viability before building a full-scale plant.

Key considerations for Russia:

1) Climate: The plant building must be insulated, and equipment must be rated for low-temperature operation (e.g., proper hydraulic oils). Raw material storage must prevent freezing.

2) Raw Material: Abundant softwood (pine, spruce) sawmill waste is ideal. The process must handle potential bark content and variable moisture from snow/ice.

3) Power: Standard 380V/50Hz industrial power is available.

4) Market: Pellets are primarily for domestic heating and export to Europe. The biomass wood pellet machine and line must produce ENplus A1 quality pellets.

5) Service: We provide comprehensive documentation in Russian and have established spare parts logistics for the region to ensure reliable operation.

Yes, our machines are well-suited for high-humidity environments like Vietnam. We take specific measures:

1) Corrosion Protection: We use high-quality paints and, where necessary, stainless steel components on external surfaces and in critical areas prone to moisture.

2) Electrical Systems: All motors and control cabinets have a high IP (Ingress Protection) rating (e.g., IP55 or higher) to resist moisture and dust.

3) Process Design: We account for the ambient humidity in the drying system calculations, as it affects dryer efficiency.

4) Spare Parts: We advise on proper storage of spare parts (like dies and rollers) to prevent rust in the humid climate. Our installations in Southeast Asia are designed for these conditions.

While Richi Machinery is based in China, we provide comprehensive direct service support for our biomass wood pellet machines in Germany and across Europe. This includes:

1) Remote Support: 24/7 technical support via email, phone, and video call.

2) On-Site Commissioning & Training: Our engineers travel to your site for installation supervision, commissioning, and operator training.

3) Spare Parts: We maintain a strategic stock of critical spare parts (rings dies, rollers, bearings) in a European warehouse for fast delivery, often within 3-5 working days.

4) Service Partners: We work with trusted local mechanical and electrical service companies for urgent on-site interventions if needed.

In Poland, the most common feedstocks for our biomass wood pellet equipment are:

1) Softwood Sawdust & Shavings: From the large furniture and timber industry, primarily pine and spruce.

2) Agricultural Straw: Wheat and rye straw, often used in larger industrial plants.

3) Miscanthus: An energy grass increasingly cultivated for biomass.

4) Sunflower Hulls: From the local oilseed industry.

5) Clean Post-Consumer Wood Waste. 

The Polish market demands high-quality ENplus pellets, so our lines there are designed for precise drying, grinding, and pelleting to meet these strict standards consistently.

Absolutely. Brazil is a key market for us, especially for sugarcane bagasse processing. We supply complete turnkey plants designed specifically for bagasse’s characteristics: high initial moisture, high fiber, and abrasiveness.

Our solution includes: high-capacity rotary dryers, specialized hammer mills for fibrous material, and robust biomass wood pellet machines like the MZLH768 fitted with wear-resistant dies. The pellets are used for industrial boiler fuel (often at the sugar mill itself) or for export.

We understand the local regulations and can manage the entire project from design to commissioning on the ground in Brazil.

The lead time depends on whether you are ordering a standard model or a fully customized production line. For a core machine like the MZLH768 biomass wood pellet machine, the standard manufacturing cycle is 25-35 working days after order confirmation and deposit receipt.

Shipping via sea freight from our port (e.g., Qingdao) to a major US West Coast port (like Los Angeles or Long Beach) typically takes 18-25 days. Inland freight within the USA to your site adds further time.

For a complete, customized pellet plant, the lead time is longer due to the integration of multiple equipment units (dryer, hammer mill, cooler, etc.), typically ranging from 45-70 working days for production.

We provide a detailed project timeline with each formal quotation, but you should generally plan for a 3 to 4-month timeline from order to delivery at a US port for a standard machine.