3–4 T/H Plant Fiber Cat Litter Pellet Machine in Colombia

Project Overview and Equipment Specifications

The customer already had several auxiliary machines and did not need a complete production line from RICHI. The main requirement was a pelletizing unit capable of handling variations in fiber composition while producing reasonably uniform pellets for retail packaging.

The MSZLH320 was selected to balance production capacity with the customer's initial investment and future expansion plans. Its nominal capacity provides a reference for equipment selection, while actual output depends on fiber characteristics, formulation, moisture, die specifications and the required pellet quality. Production trials are therefore important before establishing commercial output targets.

Why the Customer Chose Agricultural Fiber Cat Litter

Colombia has established agricultural and food-processing industries that generate a variety of fibrous byproducts. For businesses already involved in residue collection, these materials can offer an alternative feedstock for non-food products when their properties and processing costs are suitable.

The customer saw an opportunity to develop a plant-based cat litter range for pet shops, supermarkets and online retailers serving urban markets such as Bogotá, Medellín and Cali. The proposed products were intended to compete in the lightweight, plant-based litter segment rather than directly replicate the characteristics of conventional bentonite litter.

Several commercial considerations influenced the project:

• Local fiber sourcing could reduce dependence on imported mineral litter materials, although the final cost advantage would depend on collection, transport and processing expenses.
• Agricultural residues offered an additional outlet for materials already handled by the customer's existing business.
• Different pellet diameters and formulations provided opportunities to test product variations for different retail channels.
• A single-machine investment allowed the company to evaluate production performance and customer acceptance before committing to a larger manufacturing facility.

The project was not simply a matter of compressing waste into pellets. The finished product needed sufficient mechanical strength for handling, an acceptable level of dust, appropriate water absorption and consistent dimensions. These properties depend on the complete formulation and processing route, not on the pellet machine alone.

Raw Materials and Their Processing Requirements

The proposed formula combined several plant-derived materials with different physical characteristics. Some fibers are relatively coarse and difficult to feed uniformly, while others are abrasive or require additional preparation to achieve suitable binding and absorption.

The customer tested several combinations before selecting a working formula. The objective was to balance pellet strength, absorption, dust generation and biodegradability without making the pellets so dense that they performed poorly during use.

The planned moisture content of the prepared mixture entering the pelletizing stage was approximately 14–18%. This is a project-specific starting range, not a universal setting for all plant fiber cat litter. The correct value must be established through trials using the actual blend, binder and ring die. Excess moisture can affect pellet strength and finished-product stability, while insufficient moisture may increase friction, impair binding or reduce throughput.

Fiber length also matters. Oversized particles can interfere with uniform feeding and pellet formation, while excessive grinding can increase power consumption and produce unnecessary fines. For this reason, the customer's existing grinding equipment remained an important part of the overall process.

Why the Customer Purchased One Pellet Machine Instead of a Complete Plant

The customer had already invested in several auxiliary machines through local suppliers. Its main equipment gap was the pelletizing section, so replacing the entire preparation and packaging system would have increased the initial investment without directly addressing the most important production requirement.

The equipment already available at the site included:

• A hammer mill for reducing prepared agricultural fibers to a suitable particle size.
• A rotary dryer for handling raw materials that required moisture reduction before further processing.
• A small ribbon mixer for combining fibers, binder and other additives.
• A vibrating screener for separating finished pellets from undersized material and fines.
• A semi-automatic packaging machine for filling retail bags.

RICHI supplied the MSZLH320 pellet machine as the core forming unit. This arrangement allowed the customer to retain its existing equipment while focusing the imported machinery investment on pellet quality and production stability.

For a phased project of this type, compatibility must be checked before installation. The grinding and mixing equipment must deliver a consistent feed to the pelletizer, and the downstream cooling, screening and packaging stages must be able to handle its actual output. Otherwise, a higher-capacity pellet mill may simply transfer the production bottleneck to another part of the process.

Production Workflow from Agricultural Residues to Finished Pellets

The production arrangement was developed around the MSZLH320 and the customer's existing auxiliary equipment. The workflow needs to accommodate differences in incoming moisture, fiber length and material flow characteristics.

1. Raw material receiving and sorting. Rice husks, bagasse, corn stalks and other approved materials are checked for moisture, foreign matter and suitability for the intended product.
2. Size reduction. Coarse stalks and fibrous materials are chopped or ground to a more uniform size. Magnets and other appropriate separation measures help protect downstream machinery from contaminants.
3. Moisture adjustment. Wet incoming fibers are dried or otherwise conditioned as necessary. The target depends on the original moisture content and the requirements of the final blend.
4. Fine grinding and screening. The prepared fibers are reduced to the required particle size and screened to remove unsuitable oversized material.
5. Mixing and formulation adjustment. The plant combines the prepared fibers with cassava starch and other selected ingredients. Mixing uniformity is essential when additives are included at relatively low proportions.
6. Ring die pelletizing. The conditioned mixture is fed into the MSZLH320, where the ring die and rollers compress the material into pellets.
7. Cooling and finished-product conditioning. The pellets are cooled and checked for moisture and mechanical stability. Additional drying may be required if trials show that the finished pellets retain too much moisture.
8. Screening and packaging. Fines are separated from saleable pellets, and the accepted product is packaged according to the customer's retail specifications.

During initial production, the customer also identified a need for better dust management around the grinding area. A dust collection system was subsequently added to improve housekeeping and reduce airborne particles. Appropriate extraction, filtration and combustible-dust risk controls should be selected according to the actual material properties and plant layout.

Ring Die Configuration for 4 mm and 6 mm Cat Litter Pellets

The customer planned to sell two main pellet sizes. The smaller format was intended for lightweight premium products, while the larger format offered another option for retail testing.

Changing pellet diameter requires the appropriate ring die and a corresponding review of operating conditions. The final pellet size alone does not determine product performance. Compression ratio, fiber composition, binder concentration, conditioning moisture and cooling conditions all influence the finished litter.

The customer therefore approached the two sizes as separate product specifications rather than assuming that one set of settings would deliver identical results across both formulations.

Customized Engineering for Mixed Plant Fibers

Rice husks, sugarcane bagasse and corn stalks do not behave identically during pelletizing. The machine configuration needed to account for their differences in abrasiveness, fiber length, bulk density and feeding behavior.

Ring die selection and compression

The ring die configuration was selected for the mixed plant fiber application rather than copied directly from a wood pellet or animal feed specification. Die-hole geometry and compression ratio influence throughput, pellet density, mechanical strength and the load imposed on the machine. These parameters should be validated against the actual formula instead of assuming that a single ratio suits every agricultural residue.

Improved feeding consistency

Long or irregular plant fibers can bridge inside hoppers and create uneven material flow. The feeding arrangement therefore needs to accommodate the prepared mixture and deliver it consistently to the conditioning and pelletizing sections. Uniform upstream grinding and mixing remain important even when the pelletizer includes an improved feeding structure.

Wear protection for abrasive ingredients

Rice husks contain silica, which can contribute to wear on surfaces exposed to repeated material contact. The machine was configured with additional wear protection in key contact areas. Maintenance intervals should still be based on inspection and actual operating hours, since wear rates vary with raw material composition and contamination.

Control of fines and pellet breakage

Excessive fines can reduce packaging efficiency and affect the appearance of the retail product. The pelletizing process, cooling conditions and screening setup must work together to limit breakage. Pellet durability should be measured during trials and after transport rather than judged solely by surface appearance.

Project Results and Customer Feedback

During follow-up after commissioning, the customer reported that the MSZLH320 produced a more consistent pellet appearance than the flat die equipment it had previously evaluated. The smoother pellet surface was particularly useful for the company's retail packaging plans, where visible differences between batches could affect product presentation.

The customer also reported that the reinforced wear protection helped maintain operating stability when processing rice husk-containing blends. The ability to use different ring die configurations supported product testing without requiring a completely different pelletizing machine for each target diameter.

These observations were useful for the customer's next stage of development, but they do not establish a universal capacity or durability guarantee. Final performance still depends on the selected formula, raw material preparation, maintenance practices and the required finished-product specifications.

Other Applications for Similar Plant Fiber Processing Equipment

Although this project focused on cat litter, some of the same agricultural residues can be considered for other products when the required material properties and equipment configuration are suitable.

These are alternative application possibilities, not products that can automatically be manufactured to specification with an unchanged setup. Fuel pellets, fertilizer products, absorbents and cat litter have different performance requirements and may need different dies, formulations or auxiliary equipment.

Shipping and Technical Support for the Colombia Project

The MSZLH320 and its associated components were arranged for sea freight from Qingdao, China, to the Port of Cartagena, Colombia. Reinforced wooden packaging was specified for the shipment, which included spare rollers, ring dies and electrical control components.

Because the customer was entering a new product category, pre-sale and commissioning support focused on practical operating requirements rather than simply supplying the machine.

• Raw material preparation guidance for mixed agricultural fibers.
• Recommendations for testing binder concentration and pellet quality.
• Ring die selection for the planned 4 mm and 6 mm products.
• Electrical and installation layout information.
• Spare parts planning for wear-related components.
• Online commissioning assistance and operator training.
• Layout considerations for a possible second pelletizing machine in a future expansion.

The customer retained its existing auxiliary equipment and planned additional production space for future growth. This staged investment approach allowed the business to evaluate product quality, production costs and market acceptance before deciding whether to expand the pelletizing section.

Planning a Plant Fiber Cat Litter Pellet Project in Colombia

For Colombian agricultural processors considering plant fiber cat litter, the most important early decision is whether locally available residues can consistently meet the requirements of a saleable litter product. Abundant raw materials alone do not guarantee an economical project. Collection costs, seasonal availability, moisture, grinding energy, binder requirements, wear parts and finished-product packaging all influence the final production cost.

A practical equipment evaluation should address the following points before a machine is selected:

• Which raw materials are available throughout the year, and how much preprocessing does each require?
• Will the formula rely on a single fiber or a blend of several agricultural residues?
• What pellet diameters, absorption performance and mechanical strength are required by the target market?
• Can existing dryers, grinders, mixers and packaging equipment handle the planned production volume?
• Will finished pellets require additional drying, and how will dust and fines be collected?
• What production rate is achievable with the actual formula rather than the machine's nominal rating?
• How much space and utility capacity should be reserved for a future expansion?

The Plant Fiber Cat Litter Pellet Machine in Colombia project demonstrates how a single ring die pelletizing unit can form the core of a phased investment in agricultural residue utilization. By combining the MSZLH320 with existing preparation and packaging equipment, the customer established a starting point for developing plant-based cat litter products while retaining flexibility for future adjustments.

RICHI Machinery supplies cat litter pelletizing equipment and customized configurations for different raw materials and product specifications. If you are evaluating rice husks, sugarcane bagasse, corn stalks, recycled paper fiber or other suitable plant-based materials, share your raw material conditions, target pellet size and required capacity with our technical team. These details provide the basis for assessing equipment configuration, process requirements and the next steps toward a commercially viable cat litter production project.