1.5-2.0 T/H Bamboo Straw Cat Litter Pellet Mill in Vietnam

After evaluating options from China and Taiwan, they purchased one MZLH520 cat litter pellet machine from RICHI (from the second series, without a conditioner). RICHI has supplied similar bamboo and grass fiber pelletizing systems to producers across Southeast Asia, including Vietnam, Indonesia, Thailand, Malaysia, and the Philippines.

The heavy-duty ring-die mill with forced feeding and abrasion-resistant components has proven itself for high-silica bamboo residues. Their decision has turned a disposal liability into a premium cat litter line that now supplies pet stores across Ho Chi Minh City and Hanoi.

Project Background – The Bamboo Straw Challenge

Bamboo straw is the fibrous residue from cutting and sanding bamboo poles. It consists of 50-60% cellulose, 20-25% hemicellulose, and 15-20% lignin, with 3-5% silica (which makes it abrasive). The material is hammer-milled to 3-8mm particle size. It is then dried in a rotary dryer to 8-10% moisture. The dried fiber is fluffy, lightweight, and slightly waxy.

The factory was paying $35 per ton to have bamboo straw hauled away for local brick kilns — $42,000 annually. The owner calculated that dried bamboo straw cat litter (8% moisture) could sell for $550 per ton in the domestic market and $900 per ton for export. The dryer was already in place; only the pellet mill was missing. The MZLH520 cost $95,000 delivered. Payback would be under 6 months from disposal savings plus new revenue.

Why the MZLH520 Was Chosen

The factory owner had never pelletized bamboo fiber. RICHI addressed his concerns through several pre-sale actions:

• On-site material testing in China: A 50kg sample was shipped to RICHI's lab for pelletizing trials to confirm density, durability, and output.
• Video demonstration in Indonesia: A similar bamboo processing operation was recorded and shared to show real-world performance.
• Abrasion analysis report: Detailed wear projections were provided based on the high silica content (3-5%).
• Forced feeder test: The feeder's ability to handle fluffy, lightweight bamboo fiber without bridging was verified.

Raw Material Processing Steps

1. Hammer milling: Bamboo straw is reduced to 3-8mm particle size.
2. Drying: Rotary dryer reduces moisture from 35-40% to 8-10%.
3. Pelletizing: MZLH520 compresses dried fiber into 5mm pellets without scorching.
4. Cooling and screening: Pellets are cooled and dust is removed before bagging.

Operational Results After Ten Months

Japanese buyers tested the litter for 60 days before placing a container order. The factory now operates two shifts per day, 25 days per month, to meet both domestic and export demand.

Customer Feedback

Additional Products from the Same Machine

The MZLH520 bamboo straw cat litter pellet mill in Vietnam is not limited to bamboo cat litter. The factory is now exploring three other product streams using the same pellet mill with minor die changes:

Technical Support from RICHI

RICHI's support extended beyond the sale:

• A service engineer visited the factory twice during the first month to fine-tune the feeder speed and die gap for optimal pellet density.
• RICHI Machinery provided a comprehensive spare parts package: two spare ring dies (5mm and 8mm), one set of roller shells, and a starter set of shear bolts.
• The factory was given access to RICHI's technical documentation library, including die change procedures and troubleshooting guides for high-silica materials.
• A remote diagnostic tool was installed, allowing RICHI engineers to monitor machine performance and alert the factory to potential issues before they caused downtime.

Market Impact and Future Plans

The success of the bamboo cat litter line has attracted attention from other bamboo processing facilities in Vietnam. Representatives from factories in Quang Nam, Phu Tho, and Dong Nai provinces have visited the Binh Dinh operation. RICHI has received inquiries from three additional Vietnamese bamboo processors for similar MZLH series straw bamboo pellet mills.

The factory owner is now planning to expand with a second MZLH520 to increase export capacity, targeting the Japanese and South Korean markets where bamboo-based pet products command premium pricing.