MTW175 Trapezium Grinding Mill for Limestone
Introduction: Why Limestone Producers Choose the MTW175 Trapezium Grinding Mill
In modern mining, ore dressing and building-materials plants, turning raw limestone into fine, uniform powder is a daily bottleneck. The MTW175 trapezium grinding mill has become one of the most trusted machines for this job, delivering a steady 18–22 tons per hour output while keeping operating cost low. As a professional manufacturer of crushing, grinding and mineral-processing equipment, Baichy Heavy Industry designs and builds the MTW175 trapezium grinding mill to give limestone producers a balance of capacity, fineness and reliability that few single machines can match.
This article walks through what the MTW175 trapezium grinding mill is, its working principle, its key parameters, and why it is a smart investment for limestone powder production.
What Is the MTW175 Trapezium Grinding Mill?
The MTW175 trapezium grinding mill is a medium-to-large vertical-type roller grinding machine built for medium-hard materials such as limestone, calcite, dolomite, barite, gypsum and coal. "MTW" stands for the European trapezium mill series, and "175" refers to the mill's grinding-ring diameter of 1750 mm. Its distinctive trapezium-shaped grinding rollers and curved grinding ring give it a larger grinding surface than traditional Raymond mills, which means higher capacity and finer, more consistent finished powder.
For a limestone grinding line, the MTW175 trapezium grinding mill acts as the core pulverizing unit between the crusher (which reduces rock to below 30 mm) and the powder collection stage. It is widely used in cement, building materials, desulfurization, and glass production where the MTW175 grinding mill is expected to run continuously with low maintenance.
Process flow chart of the MTW grinding mill
Main Technical Parameters of the MTW175 Trapezium Grinding Mill
The table below summarizes the core specifications of the Baichy MTW175 trapezium grinding mill for limestone grinding. Exact values can be tuned to match your feed material and target fineness.
| Parameter | Specification | Notes |
|---|---|---|
| Model | MTW175 | European trapezium mill |
| Grinding ring diameter | 1750 mm | Determines grinding capacity |
| Number of grinding rollers | 4 | Trapezium profile, replaceable |
| Max feed size | ≤30 mm | Feed from jaw/hammer crusher |
| Finished fineness | 1.6–0.045 mm (80–400 mesh) | Down to 0.038 mm for special grades |
| Output capacity (limestone) | 18–22 t/h | Depends on moisture & fineness |
| Main motor power | 160 kW | Main grinding drive |
| Classifier (analysis) motor | ~30 kW | Adjustable rotor speed for fineness |
| Blower motor power | ~132 kW | Air conveying & classification |
| Finished moisture | <1% | Suitable for dry grinding |
| Application | Limestone, calcite, dolomite, barite | Medium-hard minerals |
Parameters are typical values and can be customized. Contact Baichy Heavy Industry for a configuration sheet matched to your limestone characteristics.
How the MTW175 Trapezium Grinding Mill Works
The working process of the MTW175 trapezium grinding mill follows a closed-loop dry grinding cycle:
1. Feeding. Crushed limestone (≤30 mm) is fed into the mill through a hopper and a screw feeder.
2. Grinding. Material falls between the trapezium-shaped rollers and the curved grinding ring. The rotating rollers crush and grind the limestone into powder under centrifugal force.
3. Classification. A high-speed classifier (analysis machine) screens the powder. Qualified fine powder passes through, while oversize particles are returned to the grinding zone for another pass.
4. Collection. The airflow carries finished powder to the cyclone and bag dust collector, where it is separated and discharged as the final product. Clean air is recirculated.
This loop lets the MTW175 trapezium grinding mill maintain the 18–22 t/h capacity consistently, because every particle is ground until it meets the target fineness — nothing too coarse slips through.
MTW175 Trapezium Grinding Mill for Limestone | 18-22 T/H
Key Advantages of the MTW175 Trapezium Grinding Mill for Limestone
Stable 18–22 t/h Output for Production Lines
The most direct benefit of the MTW175 trapezium grinding mill is its dependable capacity. At 18–22 tons per hour for limestone, a single unit can feed a medium-scale cement or desulfurization line without needing multiple small mills, which simplifies plant layout and lowers capital cost.
High Grinding Efficiency and Lower Energy Consumption
The trapezium roller profile enlarges the contact area between rollers and ring, so each rotation does more useful grinding work. Compared with traditional Raymond mills of similar size, the MTW175 trapezium grinding mill can raise output by roughly 20–30% at the same energy consumption — a real advantage when electricity is a major cost.
Adjustable Fineness from 1.6 mm Down to 0.038 mm
Different limestone applications need different powder sizes: desulfurization often uses 200 mesh, cement additives 325 mesh, and high-grade filler even finer. The variable-speed classifier of the MTW175 trapezium grinding mill lets operators switch fineness quickly without stopping the mill, making one machine serve multiple product specifications.
Low Maintenance and Long-Lasting Wear Parts
The grinding ring and rollers of the MTW175 trapezium grinding mill are made of high-wear-resistant alloy, and the trapezium design distributes wear evenly. This extends service life and shortens downtime for replacement, which is critical for plants that run the MTW175 grinding mill around the clock.
Compact Design and Easy Integration
Because the MTW175 trapezium grinding mill integrates feeding, grinding, classification and dust collection into a single closed system, it needs a relatively small footprint and simple civil works. It also produces less dust and noise, helping plants meet stricter environmental requirements.
Typical Applications of the MTW175 Trapezium Grinding Mill
The MTW175 trapezium grinding mill is more than a limestone grinder. Its adjustable fineness and stable capacity make it ideal for:
- Limestone powder for desulfurization in power plants (200 mesh).
- Calcium carbonate powder for plastics, rubber, paint and paper.
- Cement raw material and additives grinding.
- Gypsum, barite, dolomite and talc processing for construction and chemical industries.
- Coal powder preparation for boilers and gasification.
Whatever the medium-hard mineral, the MTW175 trapezium grinding mill offers the same combination of high output, fine and uniform powder, and low energy use.
How to Choose the Right Configuration for Your MTW175 Trapezium Grinding Mill
To get the full 18–22 t/h performance from the MTW175 trapezium grinding mill, match the machine to your actual conditions:
- Feed size and hardness: Keep limestone below 30 mm and within medium-hard range to protect the rollers and classifier.
- Moisture: The MTW175 trapezium grinding mill is a dry grinder; moisture above about 8% may require a dryer or pre-treatment.
- Target fineness: Tell your supplier the mesh or micron size you need, so the classifier speed and motor can be set correctly.
- Accessories: A jaw crusher, bucket elevator, feeder and bag filter should be sized to support the mill's 18–22 t/h throughput, or the whole line will be under-utilized.
A Complete Baichy Limestone Grinding Line
Baichy Heavy Industry supplies not just the MTW175 trapezium grinding mill but the whole system — primary jaw crusher, hammer crusher, elevator, silos, dust collector and control panel. Choosing a single-responsibility manufacturer means one source for installation, commissioning and after-sales service.
Why Buy the MTW175 Trapezium Grinding Mill from Baichy Heavy Industry
Baichy Heavy Industry is a professional manufacturer specializing in mining crushing, ore grinding and mineral dressing equipment. When you purchase the MTW175 trapezium grinding mill from Baichy, you get:
- Factory-direct pricing with no middleman markup.
- Customized configuration based on your limestone feed and product fineness.
- Technical support for layout, installation and operator training.
- Genuine wear parts and responsive spare-parts supply.
- After-sales service to keep your grinding line running at peak capacity.
MTW175 Trapezium Grinding Mill for Limestone | 18-22 T/H
Frequently Asked Questions (FAQ)
1. What is the output capacity of the MTW175 trapezium grinding mill for limestone?
The MTW175 trapezium grinding mill typically produces 18–22 tons per hour of limestone powder. The exact figure depends on feed size, moisture, and the target fineness — finer powder lowers throughput slightly.
2. What fineness can the MTW175 trapezium grinding mill achieve?
It grinds limestone to 1.6–0.045 mm (80–400 mesh), and can reach about 0.038 mm for special high-grade grades. The classifier speed is adjustable so you can switch fineness without stopping the mill.
3. What raw materials can the MTW175 trapezium grinding mill process?
Besides limestone, it processes calcite, dolomite, barite, gypsum, talc, coal and other medium-hard minerals with Mohs hardness up to about 7 and moisture below 8%.
4. What is the maximum feed size for the MTW175 trapezium grinding mill?
The recommended max feed size is ≤ 30 mm. Larger rocks should be pre-crushed with a jaw or hammer crusher before feeding to protect the rollers and keep output stable.
5. How do I get a quote for the MTW175 trapezium grinding mill?
Contact Baichy Heavy Industry with your raw-material data (feed size, moisture, hardness) and your target fineness and capacity. Our engineers will send a tailored configuration sheet and a factory-direct quotation for the MTW175 trapezium grinding mill and the full grinding line.
Baichy Heavy Industry
Baichy Heavy Industry is a high-tech mining equipment company integrating R&D, manufacturing, sales, and after-sales service. Focusing on crushing, grinding, and mineral processing equipment, we provide professional solutions to our customers. We are ISO9001:2015 、certified, and our products include mobile crushing palnts, crawler crushing plant, construction waste crushing plants, jaw crushers, sand making machines, cone crushers, fine crushers, grinding mills, ball mills, etc., all with reliable performance to meet diverse project needs.
Baichy Heavy Industry – Your Trusted Partner
To ensure optimal performance of your equipment, Baichy Heavy Industry offers:
- Professional on-site installation guidance
- Comprehensive operator training
- 24/7 technical support & maintenance services
Our complete after-sales service system guarantees long-term, stable operation of your machinery with minimal downtime.
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