3–4 T/H Biochar Pelletizing Machine in Malaysia

The Business Case Was Logistics

This investment was not driven by a shortage of biochar.

The customer already had it.

The question was whether every order should continue leaving the facility as loose material. For nearby users receiving bulk char, the existing product form remained practical. For customers requiring bagged material or longer transport, low bulk density and dustier handling created another set of costs.

Pelletization gave the company a second physical format without forcing it to abandon the first.

That became the basis of the project: one carbonization operation, two downstream product routes.

Loose char could bypass pelletizing. Material allocated to the densified product entered preparation, mixing and ring die forming.

Why Palm Kernel Shell Fits the Malaysian Setting

Malaysia's palm oil industry generates several biomass streams, including empty fruit bunches, mesocarp fibre and palm kernel shells. Palm kernel shell is already used as an energy and carbonaceous feedstock because of its relatively dense, hard structure compared with many loose agricultural residues.

For this customer, however, the material entering the RICHI machine was not raw palm kernel shell.

The shells had already passed through thermal conversion.

That changes the engineering problem completely. A raw shell pellet project would depend on the characteristics of untreated biomass. Here, the feed to the MZLH768 was prepared palm-kernel-shell biochar.

After carbonization, crushing and classification, the selected char fraction had to be conditioned for densification. Particle consistency, moisture and binder behavior mattered more to pellet formation than the original hardness of the shell.

3–4 T/H Was Assigned to the Pellet Product, Not the Carbonizer

The MZLH768 is the largest model used so far in this batch of cases, but it was not selected simply to make the Malaysian project look larger.

The customer's existing operation could provide a continuous prepared-char stream and had a commercial reason to produce several tons of densified material per hour.

ConfigurationMalaysia Project
Core Machine	Biochar pelletizing machine
Model	MZLH768
Quantity	1 unit
Main Motor	315 kW
Pelletizing Capacity	3–4 t/h
Carbon Feedstock	Palm kernel shell biochar
Plant Situation	Existing carbonization operation
Investment Purpose	Add a densified product route

RICHI based the capacity on material available after carbonization and classification.

This prevented a common sizing error. If the customer begins with considerably more raw palm kernel shell per hour, the pelletizer still cannot be sized directly from that figure. Pyrolysis changes the material mass, and some finished char may continue to be sold without pelletizing.

Only the stream actually assigned to densification belongs in the pellet-machine capacity calculation.

A Larger Pelletizer Changes the Supporting System

Installing a 3–4 t/h machine created a different engineering question from installing a small test unit.

The MZLH768 could not be expected to perform consistently if operators manually supplied irregular batches of char whenever material became available.

The upstream section needed enough prepared-material buffering to maintain continuous feeding. Mixing also had to distribute moisture and binder at a rate compatible with the pelletizer.

Downstream handling had to keep pace as well.

Freshly formed pellets require stabilization before final storage or packing, and screening must remove loose material generated during normal handling. If either stage becomes undersized, increasing pellet-mill capacity accomplishes little.

For this reason, RICHI reviewed the MZLH768 as part of the customer's existing material flow even though the purchase centered on one main pelletizing machine.

Palm Kernel Shell Char Still Needed Binder Evaluation

Carbonization does not preserve the natural binding characteristics of the original shell.

Prepared palm-kernel-shell biochar therefore cannot be assumed to form durable pellets merely because the raw shell is physically hard.

The customer evaluated a controlled binder addition together with moisture adjustment.

No fixed percentage was treated as universal.

A char produced under one thermal condition may have different pore structure, residual volatile matter and surface behavior from material produced under another. Particle fineness also changes the amount of contact area available during compression.

Trial production therefore aimed to identify a stable forming window.

Enough binder was needed to maintain pellet integrity through downstream handling, but unnecessary addition would increase cost and could alter the characteristics of the final carbon product.

Product Diameter Followed the Distribution Route

The customer did not ask RICHI Machinery to reproduce a standard wood-fuel pellet specification.

The densified biochar would pass through bulk handling, bagging and distribution, so diameter had to balance mechanical integrity with convenient dosing.

A larger diameter can provide a robust physical form, while unnecessarily small pellets may increase forming resistance and create no clear commercial benefit for this application.

RICHI therefore considered the final handling route when matching the ring die.

The same MZLH768 could use different appropriate die specifications for another carbon product, but changing diameter would require corresponding adjustments to material preparation and operating parameters.

Dust Control Was Concentrated Before the Die

Densification improves the handling form of the finished product, but the most dust-prone material remains upstream.

Crushed palm-kernel-shell biochar can generate fine carbonaceous dust during transfer, storage discharge and mixing. The Malaysian plant therefore needed controlled transfer arrangements around these points.

Unnecessary free-fall distances were avoided where practical. Suitable extraction and housekeeping were considered around preparation and feeding, while electrical and fire-safety measures remained subject to the characteristics of the actual char and local plant requirements.

After pelletizing and screening, the product was physically easier to contain and move than the loose feed material.

That handling improvement was one of the reasons the customer had invested in densification in the first place.

Why RICHI Kept the Project on the MZLH Route

Palm kernel shell originates from an agricultural industry, and the finished biochar may have agricultural applications. Neither fact automatically makes the material an organic fertilizer.

This customer's pellet consisted predominantly of prepared carbonized shell.

It was not a compound product built around composted manure, digestate or another organic fertilizer base. RICHI therefore matched the application to the MZLH biomass densification platform.

An FZLH configuration would become relevant under a different formulation.

For example, a producer deliberately combining palm-derived biochar with substantial composted poultry manure to manufacture a carbon-enriched organic fertilizer would present a different forming problem. That project would need to be assessed independently.

Production Acceptance Was Measured Beyond the Pellet Mill

For the customer, a good production run was not simply one in which the MZLH768 briefly displayed high output.

The plant watched the complete movement of material.

Prepared char had to enter continuously. Main-motor load had to remain within a stable operating range. Pellets leaving the die needed consistent formation. After stabilization and screening, the proportion of intact saleable product still had to meet the customer's handling expectations.

This last check mattered.

A pellet that looks strong immediately after extrusion but generates excessive fines during subsequent movement has not solved the logistics problem that justified the investment.

Operators therefore learned to use downstream breakage as feedback for upstream preparation and pelletizing adjustments.

The New Route Gave Sales Two Product Formats

Once the pelletizing section was operating, the customer did not discontinue loose biochar.

Instead, the commercial team could match physical form to order requirements.

Local customers able to handle loose carbon material could continue receiving the existing product. Orders where cleaner handling, denser packaging or more controlled dosing mattered could be directed toward pellets.

The production manager described the benefit in practical terms:

"We did not need to change what was already selling. Pelletizing gave us another format for customers who did not want to handle the same volume of loose char."

The investment therefore expanded product flexibility rather than replacing an established market.

Port Klang Was the Receiving Route

After manufacturing and factory inspection, the MZLH768 was prepared for shipment from Qingdao Port to Port Klang, Malaysia.

A machine of this size required the customer to complete electrical and foundation preparation before installation. RICHI supplied the relevant dimensional and connection information so machine positioning, feeding height, discharge arrangement and maintenance space could be coordinated with the existing facility.

Technical service covered installation guidance, commissioning, operator instruction and subsequent troubleshooting.

Wear inspection, feeder operation, ring-die and roller maintenance, lubrication and recognition of abnormal load conditions were included in the operating guidance.

The Raw Material Name Is Only the Beginning

Palm kernel shell makes sense for this Malaysian project because it is tied directly to the country's palm-processing industry. But a customer asking for a palm kernel shell biochar pellet machine still needs to provide more than the words "PKS biochar."

RICHI needs to know how the shell is carbonized, the condition of the resulting char, particle size, moisture, ash characteristics, available quantity after classification, acceptable binder system and intended use of the pellet.

Those details determine whether the correct answer is an MZLH768, a smaller MZLH model or a completely different fertilizer-oriented FZLH route.

For this customer, the answer was 3–4 t/h of ring-die densification added after an existing carbonization process. The purpose was equally specific: keep loose palm-kernel-shell biochar where it already worked, and introduce a denser pellet only where logistics and product handling justified the extra processing step.