MF Ultrafine Grinding Mill

The MF Ultrafine Grinding Mill, also known as the Three/Four-Ring Medium-Speed Micro-Powder Mill, is a high-efficiency, low-consumption grinding equipment developed by AON Machinery's R&D department through extensive technical innovation and rigorous testing. It successfully simplifies the complex classification process traditionally required by jet mills and ball mills, significantly reducing production costs while dramatically improving product fineness. Validated by thousands of end users across diverse industries, the MF series has become the preferred solution for ultra-fine powder processing applications.

Applicable Materials

Marble, Calcite, Dolomite, Kaolin, Barite, Fluorite, Mica, Calcium Carbonate, Pyrophyllite, Phosphate Rock, Titanium Concentrate and Carbon Black.

Applications

Paint & Coatings, Tires & Rubber, Plastic Products, Pipes & Tubing, Cosmetics, Flooring, Paper Making, Food & Health Products, Pharmaceuticals, Ceramics, Inks, Refractory Materials, Cement, Petroleum and Powder Metallurgy.

Working Principle

The MF Ultrafine Grinding Mill operates through a systematic multi-stage process. Raw material, initially in large pieces, is first reduced to smaller particles by the integrated crusher. The crushed material is then conveyed via the elevator to the storage hopper, from where the vibratory feeder and angled guide tube deliver it uniformly onto the dispersing plate positioned above the turntable inside the main unit.

The main motor, through the reducer, drives the main shaft and turntable to rotate. The turntable, via roller pins, sets multiple sets of grinding rollers into rotational motion within the ring channel. As the material is subjected to centrifugal force, it spreads outward and falls into the grinding chamber, where it undergoes repeated compression, rolling, and grinding by the rollers.

After multiple layers of crushing and repeated grinding, the material is transformed into fine powder. The high-pressure fan continuously draws air through the system, carrying the ground material into the classifier. The classifier's high-speed rotating impeller performs precise particle size separation: oversized particles are rejected and returned to the grinding zone for re-processing, while qualified fine powder passes through and enters the cyclone collector.

The finished product is discharged through the bottom discharge valve. Any remaining ultra-fine dust-laden air enters the pulse dust collector, where it is captured by pulse-jet cleaning. Clean air is then exhausted through the silencer, ensuring environmental compliance and a clean working environment.

Equipment Composition

Main Unit, Classifier, Powder Collector, Dust Collector, Fan, Silencer, Sound Enclosure, Crusher, Elevator, Storage Hopper and Feeder.

Product Advantages

1) High Efficiency & Low Energy Consumption

Delivering over 100% higher throughput compared to jet mills, agitator mills, and ball mills under equivalent fineness and power conditions, the MF series reduces energy consumption by up to 30%. This superior performance-to-power ratio translates directly into lower operating costs and faster ROI for your processing operations.

2) Extended Wear Part Lifespan

Grinding rollers and rings are forged from specialized wear-resistant alloys, delivering 2–3× longer service life compared to impact crushers and turbine pulverizers. Under standard operating conditions, wear parts last over 1 year; when processing calcium carbonate or calcite, lifespan extends to 2–5 years, minimizing downtime and maintenance costs.

3) Superior Safety & Reliability

The grinding chamber is designed without rolling bearings or bolted connections, eliminating the two most common failure modes in conventional mills: bearing seal degradation and bolt loosening. This clean-sheet engineering approach ensures uninterrupted operation and substantially reduces the risk of catastrophic machine damage.

4) High Fineness with Wide Adjustment Range

Product fineness is adjustable from 200 to 2500 mesh (74–5 μm), far exceeding the capability of Raymond mills and other coarse grinding equipment (maximum 325 mesh / 47 μm). This flexibility allows a single machine to serve multiple product grades, reducing capital expenditure on additional processing lines.

5) Advanced Intelligent VFD Control

An integrated intelligent Variable Frequency Drive (VFD) ensures uniform material feeding, precisely matches main shaft speed to material characteristics, and maintains consistent particle size distribution. The result is accurate particle cut-point control, stable product quality, and optimized power consumption across all operating conditions.

Technical Parameters

Main Parameters

Model

Working Dia. (mm)

Roller Number

Ring Number

Main Shaft Speed (r/min)

Input Size (mm)

Finished Size (μm/mesh)

Capacity (t/h)

MF800

800

21

2

250/240

<20

74-5 (200-2500)

0.5-5.5

MF1000

1000

28

2-3

200/220

<20

74-5 (200-2500)

0.8-6.5

MF1250

1250

28-36

2-3

180/200

<20

74-5 (200-2500)

1.7-10

MF1250L

1250

28-36

2-3

155/155

<20

100-6 (150-2000)

2.5-20

MF1680L

1680

50-44

3-4

120/150

<20

100-9 (150-1500)

4.5-45

Power Parameters

Model

Main Motor (kW)

Classifier (kW)

Fan (kW)

Crusher (kW)

Elevator (kW)

Feeder (kW)

MF800

18.5

5.5

18.5

18.5

3

1.5

MF1000

45

5.5-30

45

15.5

4

1.5

MF1250

55

30-57

75

11.5

5.5

1.5

MF1250L

90

55

110

45

7.5

1.5

MF1680L

132-200

75

200-220

55

75

22

Why Choose Aon Machinery

Hainan Aon International Trade Co., Ltd. is committed to delivering world-class grinding and powder processing solutions. With years of dedicated R&D investment, rigorous quality control, and extensive field validation across thousands of installations, AON Machinery has established itself as a trusted partner for industrial clients worldwide. Our MF series ultrafine grinding mills represent the culmination of continuous engineering improvement — combining high throughput, precision classification, extended wear life, and intelligent automation in a single, robust platform. Choose AON for reliable performance, competitive total cost of ownership, and professional after-sales support that keeps your production running at peak efficiency.

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