1T/H Millet Straw Pellet Mill in Nigeria

Why Kaduna Is a Practical Location for Millet Straw Pellet Production

Northern Nigeria has a strong millet-growing base, and Kaduna is one of the states where millet production forms part of the regional agricultural economy.

For a biomass company, the useful resource is not the total millet crop itself but the portion of post-harvest straw that can realistically be collected without interfering with livestock feeding, soil management or other local uses.

This distinction matters when evaluating a pellet project.

Crop residues are often described as “waste,” but in practice some straw may already be used as animal roughage, bedding, household fuel or field cover. A pellet producer therefore needs to calculate recoverable surplus rather than assuming that every tonne of millet straw in the surrounding farming area is commercially available.

The Kaduna customer builds its raw-material plan around contracted collection from surrounding farms and seasonal storage after harvest.

Millet straw is the main material because it is locally available and fibrous enough to be densified after proper size reduction. Corn stalks can supplement supply during periods when millet straw volume is lower.

Clean, untreated solid-wood residues may also be considered in selected fuel-pellet batches, provided the source is traceable.

Painted wood, laminated boards, MDF, particleboard, preservative-treated timber and chemically contaminated wood are kept out of the fuel-pellet feedstock stream.

MZLH420 Selected for a 1.0–1.2 T/H Biomass Pellet Project

The MZLH420 uses a 90 kW main motor and is positioned above small pilot pellet mills while remaining suitable for a producer entering commercial biomass pellet production at roughly one tonne per hour.

Its approximately 1.0–1.2 T/H reference capacity is based on suitable prepared biomass. Actual output changes with raw-material density, fibre structure, particle size, moisture, die specification and feeding stability.

This makes the MZLH420 a more realistic machine for the Kaduna project than a 1.8–2.0 T/H rating.

At 1.0 T/H and eight actual pelleting hours per day, theoretical output is approximately eight tonnes per day. At 1.2 T/H, the same operating window gives approximately 9.6 tonnes per day before allowing for maintenance, stops and raw-material changeovers.

If the plant operates 300 days per year, the theoretical range is roughly 2,400–2,880 tonnes annually.

These figures give the customer a useful basis for comparing annual raw-material collection with expected pellet sales.

Millet Straw Needs Two-Stage Size Reduction Before Pelletizing

Millet straw should not move directly from field bales into the ring die pellet mill.

Long fibrous stems are difficult to feed consistently, and coarse material can bridge in hoppers or create unstable loading at the pellet mill.

The customer therefore separates coarse preparation from final grinding.

1. Collected millet straw is inspected and stored under dry, protected conditions.
2. Baled material is opened and loosened before fine processing.
3. Long straw passes through primary shredding or chopping, normally reducing it into an intermediate size range suitable for controlled handling.
4. Metal, stones, soil clods and other foreign material are removed as far as practical.
5. A hammer mill reduces the prepared straw further to a particle size suitable for ring die pelletizing.
6. Moisture is checked and adjusted if necessary.
7. The prepared biomass enters the MZLH420 for pellet formation.
8. Hot pellets are cooled and screened before storage or packaging.

For straw projects, an intermediate coarse size around 15–60 mm after bale breaking or primary shredding can be practical before hammer milling.

The final hammer-milled material needs to be substantially finer before it reaches the pellet mill.

This two-stage approach is more reliable than expecting one shredder to convert intact straw bales directly into pellet-mill-ready material.

Moisture Control Starts with the Actual Stored Straw

Moisture is one of the most important operating variables in millet straw pellet production.

However, a fixed 12–15% figure should not be treated as a universal specification for every batch.

A low-teens moisture range can provide a useful starting region for biomass pellet trials, but the correct value depends on millet straw condition, corn-stalk proportion, any wood fraction, particle size, ambient conditions and die behavior.

Material that is too wet can feed poorly, generate soft pellets or increase the risk of blockage and unstable compression.

Material that is too dry may require more compression force and can produce brittle pellets or excessive fines.

The Kaduna customer therefore checks the actual stored straw rather than assuming harvest moisture remains unchanged.

Northern Nigerian residues can experience large seasonal differences between dry-season collection and material exposed to rainfall or poor storage.

Covered storage is therefore part of raw-material management.

If the straw arrives too wet for direct pelletizing, drying capacity may become necessary before fine grinding or pelletizing. If the material is already sufficiently dry, adding a full industrial dryer would unnecessarily increase project cost.

This is one advantage of starting with a standalone pellet mill: the customer can characterize local straw first and determine whether additional drying equipment is genuinely required before expanding the system.

Fuel Pellet Quality Depends on Straw Ash, Soil and Raw Material Mix

Millet straw can be densified into fuel pellets, but pellet shape alone does not determine fuel quality.

Agricultural residues usually behave differently from clean wood because their ash-forming mineral content can be higher.

Soil contamination can increase ash further.

This means collection practice matters. Straw picked up together with excessive soil, stones or dust can create unnecessary wear in the grinding and pelletizing equipment and can also reduce the quality of the finished fuel.

The customer therefore controls field contamination before pellet production rather than relying on the pellet mill to correct poor raw material.

Corn stalks can be used as a supplementary agricultural residue where supply is available.

Selected clean wood residues can also be evaluated in fuel-pellet blends, but they are not automatically added simply to “increase calorific value.”

Before a mixed feedstock is adopted, the producer needs to consider availability, ash, bulk density, pellet formation and the fuel specification required by the final boiler user.

The receiving boiler is equally important.

A pellet that forms well mechanically is not automatically suitable for every industrial combustion system.

Boiler grate design, fuel-feeding system, allowable ash, slagging tendency and operating temperature all influence whether a particular straw pellet is a good commercial fuel.

For that reason, RICHI recommends that biomass producers qualify both the raw material and the downstream fuel customer before expanding production.

Why This Project Produces Fuel Pellets Only

The MZLH420 in this project is configured as a biomass pellet mill for fuel production.

Millet straw may have separate livestock-feed uses in agricultural systems, but those uses should not be mixed into a biomass pellet case simply because the same crop residue is involved.

Commercial animal-feed production requires nutritional formulation, ingredient quality control, feed-safety management and equipment suited to feed conditioning and production requirements.

Fuel pellet production has a different objective.

The Kaduna customer is trying to increase bulk density, improve storage and transport, and convert loose agricultural residues into a standardized solid biomass fuel.

The relevant product properties therefore include pellet dimensions, mechanical strength, fines, moisture, ash and combustion compatibility.

This also makes the project easier to operate commercially.

Instead of trying to develop fuel pellets, goat feed, cattle feed and poultry feed from one small production section, the customer can concentrate raw-material testing and market development on one clear product family.

For the MZLH420, 6–10 mm fuel pellets can be evaluated depending on the target boiler and customer handling system.

Pellet diameter is selected through ring die configuration, but die selection also affects compression resistance and throughput.

Standalone Pellet Mill Does Not Mean No Auxiliary Equipment

Purchasing one MZLH420 does not mean that untreated straw can be placed into the machine at one end and packaged pellets collected at the other.

The standalone-machine strategy means that the customer invests in the pelletizing core while retaining or locally arranging the required preprocessing and downstream handling.

For this Kaduna project, the important interfaces are straw opening, primary size reduction, fine grinding, foreign-material removal, feeding, cooling and screening.

Stable feeding deserves particular attention because dry straw is lightweight.

A pellet mill designed for fibrous biomass benefits from equipment that prevents bridging and feeds the ring die at a controlled rate.

If the customer later increases annual output, the MZLH420 can become part of a more integrated production line.

Potential expansion can include automated bale receiving, larger shredding capacity, dedicated drying, buffer silos, additional pellet mills, counterflow cooling, screening, dust collection and automatic bagging.

The expansion decision should follow actual raw-material availability and pellet sales rather than being assumed during the first investment.

Shipping from Qingdao to Nigeria and Inland Delivery to Kaduna

The MZLH420 biomass pellet mill was prepared for export from Qingdao and routed through a Nigerian seaport before inland delivery toward Kaduna State.

Lagos is a practical maritime gateway for imported industrial machinery entering Nigeria, although final port selection depends on vessel service, forwarding arrangement and the customer’s import plan.

The inland section is significant because Kaduna is far from the southern coast.

For this reason, the customer needs to include inland trucking, lifting, unloading and site access in the logistics plan rather than evaluating only ocean freight.

Before dispatch, RICHI checks the machine configuration against the confirmed order and provides the technical information required for installation.

At site, foundation, electrical supply, feeding interface, discharge arrangement and safe maintenance space need to be checked before production starts.

The project does not depend on a fixed seven-day installation period or a guaranteed customs-clearance schedule. These steps vary according to site readiness, local logistics and the actual installation scope.

Millet Straw Pellet Mill in Nigeria

This millet straw pellet mill in Nigeria project is designed around a simple commercial question: can a biomass processor collect enough recoverable millet straw in northern Nigeria, prepare it consistently and sell the resulting pellets to fuel users at a scale that supports expansion?

The customer selected the RICHI MZLH420 straw biomass pellet machine because its approximately 1.0–1.2 T/H reference capacity provides a practical entry point between very small pellet machines and a complete multi-tonne-per-hour industrial plant.

The project uses millet straw as the main biomass feedstock, with corn stalks and selected clean wood residues available as supplementary materials where technically and commercially justified.

Raw material moves through bale opening, coarse size reduction, foreign-material control, fine grinding and moisture adjustment before entering the pellet mill.

This preparation is essential. Long millet straw cannot simply be shredded once to 3–5 mm and sent directly from the bale into the ring die. Coarse preparation and fine grinding perform different jobs.

The finished product is biomass fuel pellet, not animal feed pellet.

This keeps machine selection, process control and customer qualification consistent with the MZLH biomass series.

For another buyer searching for a Millet Straw Pellet Mill in Nigeria, millet straw pellet machine, straw biomass pellet mill, agricultural waste pellet machine Nigeria, crop residue pellet mill or 1 T/H biomass pellet machine, RICHI first evaluates the raw-material supply rather than beginning with machine price alone.

Useful project data include annual recoverable dry millet straw, collection season, bale type, stored moisture, soil and foreign-material contamination, supplementary biomass sources, required operating hours, target pellet diameter and the combustion system that will use the finished fuel.

Existing equipment is equally important.

A company that already owns a bale breaker, straw shredder, hammer mill, cooler and bagging equipment may only need a pellet mill and feeding interface. A company starting with field bales may require a much larger preprocessing system before an MZLH420 can operate reliably.

Electrical conditions also need to be confirmed because the main pellet mill uses a 90 kW motor and the complete working section includes additional motors for feeding, grinding, conveying, cooling and dust control.

RICHI Machinery can use this information to determine whether the customer needs only an MZLH420 millet straw pellet mill or whether the planned production volume has already reached the point where an integrated pellet line would be more economical and easier to operate.

For a Kaduna biomass project, send RICHI the millet straw quantity available per year, current moisture, bale dimensions, preprocessing equipment already installed, target tonnes per hour, fuel-pellet diameter and intended boiler application. These inputs are enough to start a technically meaningful equipment recommendation instead of selecting a pellet mill from nominal capacity alone.