In the heart of Quebec, Canada, a rapidly growing plastic manufacturing sector is demanding high-quality mineral fillers to enhance the structural integrity and cost-efficiency of plastic storage boxes. One of the most sought-after solutions is finely ground marble powder at 400 mesh, used as a filler to improve rigidity, reduce shrinkage, and lower production costs. To meet this specific requirement—11 tonnes per hour (TPH) of 400 mesh marble powder—Shanghai Zenith Machinery Co., Ltd. has deployed its MTW175 European Trapezium Mill, a proven workhorse in the industrial grinding industry. This article explores why the MTW175 is the ideal choice for this application and how it delivers unmatched performance in Quebec's demanding environment.

The Challenge: High-Volume, Fine-Grind Marble Filler for Plastics

Plastic storage box manufacturers in Quebec require a consistent supply of 400 mesh marble powder with a bulk density suitable for compounding. Traditional ball mills often fall short due to high energy consumption, large footprint, and difficulty in achieving uniform fine particles at high throughput. The client needed a system that could produce 11 TPH of 400 mesh powder with stable fineness, low maintenance, and compliance with strict environmental standards. The MTW175, with its advanced trapezoidal grinding rollers and integrated classifier, emerged as the perfect match.

Why MTW175? Precision Engineering for Marble Grinding

The MTW series trapezium mill is designed for producing 80–400 mesh fine powder with large capacity. The MTW175 model, specifically, offers a capacity range of 3–22 T/H and accepts feed sizes up to 35mm. For Quebec's marble application, the mill operates at an optimal 11 TPH output while achieving a target fineness of 400 mesh. Key features that make this possible include:

• Adjustable Output Fineness: The modular impeller adjustment device allows quick changeover to produce 400 mesh by simply replacing the impeller. No need for additional screening equipment.
• 60% Lower Energy Consumption vs. Ball Mill: Under ideal conditions, the MTW175 consumes over 60% less energy than a ball mill of the same grade—critical for reducing operational costs in Quebec's energy market.
• Higher Induced Air Efficiency: With an upgraded impeller fan that boosts air induction efficiency from 62% to 85%, the mill ensures stable airflow and consistent classification even at high throughput.
• Compact Footprint: The integrated system from bulk material hopper to finished powder collector minimizes plant area, reducing civil construction costs for the Quebec facility.

Working Principle: From Marble Rock to 400 Mesh Filler

The process begins after primary crushing (jaw crusher reducing marble to ≤35mm). The qualified material is fed to the MTW175 main grinding chamber via a variable-frequency belt feeder. Inside, the trapezoidal grinding rollers and ring crush the material through rolling and grinding. The fan airflow carries the crushed particles upward to the powder selector (classifier). Fine particles (≤400 mesh) pass through and enter the cyclone powder collector, while coarse particles fall back for re-grinding. The entire system operates under positive and negative pressure, ensuring dust-free operation with a pulse dust collector meeting Canadian environmental standards.

Plastic Storage Box Filler Application: Why 400 Mesh Marble?

In plastic compounding, marble powder (calcium carbonate) serves as a functional filler. At 400 mesh, it provides excellent dispersion, improved impact resistance, and reduced warpage in injection-molded storage boxes. The 11 TPH capacity is ideal for a mid-to-large plastic manufacturer in Quebec, enabling continuous production without frequent silo refills. The MTW175's stable performance ensures consistent bulk density and particle size distribution, which directly translates to uniform melt flow and product quality.

Comparison with Other Grinding Options

Zenith offers several mills, but for this specific requirement, the MTW175 stands out. The MTM trapezium mill (80–400 mesh) could also achieve 400 mesh but with slightly lower capacity per unit. The LM vertical mill is excellent for large-scale operations (up to 340 T/H) but might be overkill for 11 TPH. The Raymond mill, while cost-effective, typically tops out at 325 mesh. The MTW175 strikes the perfect balance between capacity, fineness, and operational cost. Additionally, its 60% lower energy consumption compared to a ball mill makes it a green choice for Quebec's environmentally conscious industry.

Installation and After-Sales Support in Quebec

Zenith has a global presence with offices in over 30 countries, and its network covers North America. For the Quebec client, Zenith provided a complete solution including mill selection, foundation design, and commissioning. The MTW175's modular construction allowed quick on-site assembly, and the intelligent control system (PLC with remote access) enables the client to monitor production from anywhere. Spare parts are stocked in regional warehouses to minimize downtime.

Conclusion

For plastic storage box filler producers in Quebec requiring 400 mesh marble powder at 11 TPH, the MTW175 European Trapezium Mill from Zenith is a proven, efficient, and reliable choice. Its energy-saving design, adjustable fineness, and compact footprint deliver a clear return on investment. As the demand for high-quality mineral fillers grows in Canada, the MTW175 continues to set the standard for marble grinding excellence.

Frequently Asked Questions (FAQ)

1. Can the MTW175 consistently produce 400 mesh marble powder at 11 TPH?
   Yes. With its adjustable impeller classifier, the MTW175 can be precisely set to 400 mesh while maintaining a stable output of 11 TPH. Actual performance depends on marble hardness and moisture; Zenith recommends testing feed material before full-scale operation.
2. What is the power consumption of the MTW175 for this application?
   The MTW175 typically consumes 110–160 kW under full load for marble grinding at 400 mesh. Compared to a ball mill producing the same output, it saves approximately 60% energy, resulting in significant cost savings over time.
3. How does the MTW175 handle marble with high moisture content?
   The MTW175 can process feed material with moisture up to 6% without pre-drying, thanks to the hot air circulation system integrated into the mill. For higher moisture, an auxiliary dryer may be recommended.
4. What is the recommended pre-crushing size for the MTW175?
   For optimal performance, the feed size should be ≤35mm. A primary jaw crusher or hammer crusher is typically used to reduce marble blocks to this range. Zenith can supply a complete crushing and grinding line.
5. Is the MTW175 suitable for producing other filler grades (e.g., 325 mesh) for plastic applications?
   Absolutely. The modular impeller system allows fineness adjustment from 80 to 400 mesh. Switching between 325 and 400 mesh requires only changing the impeller and recalibrating the classifier, which can be done within a few hours.
6. What environmental certifications does the MTW175 have?
   The MTW175 is CE, ISO 9001, and CU-TR certified. Its pulse dust collector ensures emission levels below 20 mg/Nm³, meeting Quebec's stringent environmental regulations.
7. Can I integrate the MTW175 with existing plastic compounding lines?
   Yes. The mill outputs fine powder directly to a cyclone collector or silo. The finished powder can be conveyed via pneumatic systems to your compounding extruders. Zenith offers full integration services.

For more information on how the MTW175 can optimize your marble filler production in Quebec, contact Shanghai Zenith's North American team for a customized proposal.