What Materials Can The HGM Ultrafine Grinding Mill Process?

06/06/2025 admin

The HGM ultrafine grinding mill is a powerful and efficient industrial milling machine used to produce ultra-fine powder from non-metallic minerals.

Thanks to its high capacity, energy efficiency, and precision, it has become widely adopted in industries such as coatings, plastics, paper, food, and pharmaceuticals.

micro powder grinding mill for talc, mica, kaolin, etc.

In this article, we will explore how the HGM ultrafine grinding mill works, what materials it can process, its key advantages, and the critical issues to monitor during operation.

How Does the HGM Ultrafine Grinding Mill Work?

The HGM ultrafine grinding mill uses ring-roller grinding technology to achieve fine and ultrafine powder production. Here’s how it works:

Crushing & Feeding: Raw materials (≤20mm, ≤6% moisture) are pre-crushed and fed into the mill using a screw conveyor or vibrating feeder.
Grinding: Inside the mill, multiple rollers grind the material against a rotating grinding ring, breaking it down to micron-level sizes.
Classification: A built-in high-efficiency classifier separates fine powder from coarse particles, which are returned for further grinding.
Collection: The finished powder is collected via a pulse dust collector or cyclone and then packaged or sent to downstream processing.

What Materials Can the HGM Ultrafine Grinding Mill Process?

The HGM ultrafine grinding mill can handle over 100 types of non-metallic minerals and materials with Mohs hardness ≤ 6 and moisture ≤ 6%. Common materials include:

Carbonates: Calcium carbonate, dolomite, marble
Silicates: Talc, kaolin, bentonite, mica, zeolite
Oxides: Barite, alumina, titanium dioxide
Sulfates & Phosphates: Gypsum, phosphate rock
Carbon-based: Activated carbon, graphite
Others: Fly ash, slag, eggshells, conch shell powder

Calcite

Marble

Limestone

Dolomite

Magnesite

Barite

Gypsum

Phosphate rock

Talc

Kaolin

Bentonite

Mica

Zeolite

Carbon black

Eggshell

Seashell

Waste glass

Bamboo

Applications of the Final Powder:

Paints & coatings
Plastics & rubber fillers
Paper industry
Pharmaceuticals & cosmetics
Food additives (e.g., calcium supplements from eggshells)
Construction materials

Key Advantages of HGM Ultrafine Grinding Mill

1. Ultra-Fine Output Size

Can grind materials to 325–3000 mesh (D50 up to 3–10 μm).
Ideal for high-end applications in paints, plastics, paper, food, and pharmaceuticals.

2. High Efficiency and Output

Advanced multi-ring roller grinding structure.
Higher capacity than traditional Raymond or ball mills—up to 30 tons/hour (depending on model and material).

3. Energy Saving

Uses lower power per ton compared to traditional mills.
Efficient classification system reduces over-grinding and saves energy.

4. Wide Range of Applications

Suitable for non-metallic minerals with Mohs hardness ≤ 6.
Can process over 100 materials like calcium carbonate, talc, barite, gypsum, shell powder, etc.

5. Stable Operation and Low Maintenance

German technology design ensures reliable, continuous operation.
Uses wear-resistant alloy parts with long service life.
Fully sealed system reduces dust and maintenance requirements.

6. Customizable & Scalable

Multiple models available (HGM80, HGM100, HGM125, HGM168L, etc.).
Easily integrated into coating, drying, or classification systems.

7. Environmentally Friendly

Closed-loop system with pulse dust collector ensures clean and safe working conditions.
Low vibration and noise levels meet environmental standards.

Key Issues That Need Attention During Operation

To ensure safe and efficient operation, consider the following:

1. Raw Material Requirements

Hardness ≤ 6 Mohs: Avoid feeding hard materials like quartz or metals which can damage the grinding rollers.
Moisture ≤ 6%: Wet materials may cause blockages and affect grinding efficiency.

2. Feeding System

Ensure uniform feeding to prevent overloading or uneven grinding.
Use a vibrating feeder or screw conveyor with proper speed control.

3. Airflow & Ventilation

Maintain proper airflow inside the mill—too much or too little air affects powder classification.
Regularly check and clean the air ducts and blower filters to avoid blockages.

4. Wear Parts Monitoring

Key wear parts: grinding rollers, grinding ring, and classifier blades.
Check wear regularly and replace in time to avoid reduced output fineness and capacity.

5. Lubrication System

Use high-temperature, high-load lubricants for bearings.
Regularly check oil level and quality in main bearing, gearbox, and blower.

6. Dust Collection

Make sure the pulse dust collector or filter bags are working well.
Replace damaged bags to prevent powder leakage and air pollution.

7. Electrical & Automation

Ensure PLC system, sensors, and inverters are functioning correctly.
Set proper alarms for overcurrent, overtemperature, or vibration.

8. Startup & Shutdown Procedures

Follow the correct sequence: Start blower → classifier → main mill → feeder.
During shutdown, turn off in reverse order and allow the blower to run for a few minutes to clear dust.

Non-metallic Minearls Processing-HGM Ultrafine Grinding Mill

The HGM ultrafine grinding mill is a highly efficient and precise solution for producing fine and ultrafine powder from non-metallic minerals. With its advanced design, wide application range, and energy-efficient performance, it is an ideal choice for modern powder processing industries. However, to maximize performance and extend equipment life, it’s important to follow proper operational guidelines and maintenance practices.

Need help selecting the right HGM ultrafine grinding mill model or want to discuss a specific material? Contact our technical team for professional guidance.

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