How To Reduce Operation Cost & Vibration Failure Of MTW Trapezium Grinding Mill Production Line?

1. Overview & Working Principle of Mascot MTW Trapezium Grinding Mill

The MTW Trapezium Grinding Mill is a new-generation closed-circuit dry grinding equipment launched by Mascot R&D team, absorbing European mature powder-making technology and optimizing hundreds of user feedback on traditional Raymond Mill. This trapezium mill is specially designed for medium-low hardness non-metallic minerals with Mohs hardness below 6, widely used in limestone, calcite, gypsum, bauxite, petroleum coke, talc and desulfurization limestone powder production lines.

Different from conventional pendulum grinding machines, Mascot MTW Trapezium Grinding Mill adopts trapezoidal grinding chamber structural layout, bevel gear integrated transmission and built-in thin oil lubrication system, solving the pain points of high energy consumption, frequent maintenance and easy powder leakage of old grinding equipment. The whole set of production line runs under full negative pressure, integrating feeding, grinding, classification, conveying and dust collection into one complete system with small floor space and high automation degree.

Standard working flow of MTW Trapezium Grinding Mill: Raw materials with particle size ≤40mm are lifted to buffer silo via chain bucket elevator, and evenly sent into grinding cavity by frequency conversion vibrating feeder. Curved replaceable shovels lift materials into the gap between grinding roller and grinding ring; under linkage pressurization of springs, rollers squeeze and grind raw materials repeatedly. Qualified fine powder is brought into high-efficiency cage classifier by circulating airflow, coarse particles fall back to grinding chamber for re-grinding, finished powder is collected by cyclone separator and pulse dust collector, and exhaust gas after dust removal reaches international environmental protection emission standards.

1.1 Core Main Machine Technical Parameter Table of MTW Trapezium Grinding Mill

2. Six Unique Patented Advantages of Mascot MTW Trapezium Grinding Mill

Compared with traditional Raymond Mill and ordinary suspension roller mill, our MTW Trapezium Grinding Mill has multiple exclusive patented technologies that greatly improve production efficiency and reduce long-term operating costs for powder factories:

1. Integrated Bevel Gear Transmission: Cancel extra independent reducer of old grinding machines, compact transmission structure, energy consumption reduced by 18% under the same output, low vibration and low noise during operation.

2. Built-in Thin Oil Circulation Lubrication System: Main shaft and gear set adopt automatic thin oil lubrication, oil change cycle extends to 4 months, no frequent manual refueling, bearing service life increased by 2 times compared with grease lubrication Raymond Mill.

3. Arc Low-Resistance Air Duct Design: Replace traditional flat air duct, airflow circulation loss decreases, material blockage probability inside the mill drops significantly, stable continuous operation for 24 hours without shutdown cleaning.

4. Curved Replaceable Shovel Blades: Larger material lifting area, grinding efficiency improved by 25%; split blade design only needs to replace worn parts instead of whole set, saving spare parts cost by 30% annually.

5. Variable Frequency Cage Classifier: Real-time adjustment of finished powder fineness between 80-425mesh, air seal structure avoids coarse powder mixing into finished products, powder quality meets high-standard building material and desulfurization requirements.

6. Full-Sealed Negative Pressure Environmental Protection System: Matched LQM pulse dust collector, dust emission ≤25mg/m³, fully complies with global environmental protection standards; no powder overflow in workshop, clean production environment.

3. Complete Supporting Auxiliary Equipment Matching Table For MTW Trapezium Grinding Mill Line

4. Detailed Customer Application Case: Southeast Asia Large Limestone MTW Trapezium Grinding Mill Production Line

A large environmental protection desulfurization material factory in Southeast Asia signed a full-set powder making line cooperation with Mascot Heavy Industry in early 2025. The customer’s raw material is limestone with Mohs hardness 3, raw ore moisture 8.2%. The factory originally ran 3 sets of 6R Raymond Mill with total output 22t/h, but faced high power consumption, frequent roller replacement and unstable powder fineness, so they decided to replace old equipment with our customized MTW175 Trapezium Grinding Mill integrated production line.

Mascot technical team completed on-site survey, raw ore grinding test and factory layout optimization within 6 working days. The full set equipment includes MTW175 main grinding machine, TH400 bucket elevator, GZ2 frequency vibrating feeder, matched cyclone collector, LQM96-8 dust collector and full PLC intelligent control system. Our factory finished all equipment production and container packaging within 30 days, dispatched two senior installation engineers to the customer’s plant for 40 days full guidance of equipment installation, pipeline layout, power wiring, commissioning and operator training, the whole line was officially put into stable operation after 42 days of equipment arrival.

After 11 months of continuous production operation, the customer feeds limestone raw ore with particle size ≤38mm, actual stable processing capacity of single MTW175 mill reaches 40t/h, finished desulfurization limestone powder stably controlled at 250mesh, powder moisture ≤0.9% fully meets local power plant desulfurization raw material standards. The customer’s actual operation feedback data is as follows:

1. Replace 3 sets of Raymond Mill with 1 set MTW Trapezium Grinding Mill, total plant occupied area reduced by 42%, infrastructure reconstruction investment saved 78,000 US dollars;

2. Comprehensive power consumption per ton limestone dropped by 29%, annual electricity cost saved over 150,000 US dollars;

3. Thin oil lubrication design reduces daily maintenance work, maintenance labor cut from 4 workers to 1, annual maintenance spare parts expenditure reduced by 22%;

4. Whole line dust emission 22mg/m³, smoothly passed local environmental supervision inspection without rectification;

The customer highly recognized Mascot’s MTW Trapezium Grinding Mill performance and after-sales service system, and signed a second expansion line purchase intention in May 2026, planning to add one more MTW175 unit to expand annual desulfurization powder output by 700,000 tons.

5. Matching Related Equipment Recommendation For MTW Trapezium Grinding Mill Line

According to different raw material hardness, target output and fineness requirements of global customers, Mascot Heavy Industry supports complete production line matching with MTW Trapezium Grinding Mill to form integrated crushing-grinding-collecting closed-circuit system:

1. Jaw Crusher: Primary crushing equipment, break large limestone, calcite blocks into ≤40mm particles to meet MTW feeding standard;

2. Raymond Mill: Small and medium output powder making equipment, matched with MTW mill to realize dual-stage grinding for small batch high-fineness powder;

3. Screw Conveyor: Sealed horizontal conveying equipment, transport finished powder from cyclone collector to finished product silo without dust leakage;

4. Automatic Powder Packing Machine: Supporting post-processing equipment for quantitative packaging of finished mineral powder, improving factory automation.

6. 3 Core Frequently Asked Questions About MTW Trapezium Grinding Mill

Q1: Why does MTW Trapezium Grinding Mill produce coarse mixed powder in finished products?

Main causes: Low rotating speed of frequency conversion classifier, damaged air seal ring of grinding chamber, excessive raw material feeding volume leading to incomplete grinding. Solutions: Adjust classifier frequency to increase rotating speed; replace aging air seal components to block airflow short circuit; control feeding volume stably within rated range of the mill; regularly clean arc air duct to avoid airflow resistance affecting classification effect.

Q2: What materials can Mascot MTW Trapezium Grinding Mill process, is it suitable for high-hardness ore?

Mascot MTW Trapezium Grinding Mill is optimized for medium-low hardness non-metallic minerals with Mohs hardness ≤6, including limestone, calcite, gypsum, talc, bauxite, petroleum coke, kaolin and marble. It is not recommended for high-hardness metal ores such as iron ore and copper ore, for hard mineral grinding we recommend our dry ball mill series. For materials with high abrasion, we can customize high-chromium alloy grinding roller and ring to extend service life.

Q3: How long is the service life of MTW mill wearing parts, and how to extend replacement cycle?

Standard service life of grinding roller and grinding ring: 9-14 months for soft limestone and calcite, 5-8 months for medium-abrasion gypsum and bauxite. Effective extension methods: Strictly control feed particle size ≤40mm to prevent oversized hard blocks from accelerating wear; maintain continuous stable feeding to avoid empty grinding or overload operation; conduct thin oil lubrication inspection every 15 days to reduce equipment vibration and abrasion loss; regularly clean residual hard impurities in grinding cavity.

About of Mascot

Zhengzhou Mascot 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.

Our advantages:

• Professional pre-sales support: Free project design and comprehensive solutions to help you accurately select the right equipment;

• Comprehensive on-site service: Providing installation guidance and worker training to ensure smooth equipment commissioning;

• Reliable after-sales guarantee: A complete after-sales system, timely response to technical inquiries and equipment maintenance, ensuring long-term stable operation.

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