The high-pressure suspension grinding mill—commonly known as the YGM series mill—represents a significant advancement in fine powder processing technology. Engineered as an upgrade to traditional Raymond mills, this equipment incorporates high-pressure spring systems that dramatically increase grinding force and production capacity .
Whether you process barite for drilling mud, limestone for desulfurization, or calcite for industrial fillers, the YGM high-pressure suspension mill delivers consistent fineness from 30 mesh (0.613 mm) down to 425 mesh (0.033 mm), with select models achieving up to 1000 mesh for ultra-fine applications .

The high-pressure suspension grinding mill is a fine powder processing system designed for non-flammable, non-explosive minerals with Mohs hardness below 9.3 and moisture content under 6% . The YGM series is widely used across mining, metallurgy, chemical engineering, construction materials, and power plant desulfurization industries .
The mill system consists of:
● Main grinding unit – houses rollers, ring, and shovels
● High-pressure springs – deliver 800-1500kgf additional grinding force
● Separator/classifier – controls finished particle size
● Blower – circulates air for powder transport
● Cyclone powder collector – captures finished product
● Bag filter – ensures dust-free operation
The working principle centers on the high-pressure spring mechanism that distinguishes this mill from conventional Raymond mills :
● Material feeding: Raw material is crushed and fed into the grinding chamber via feeder and hopper.
● Grinding process: Inside the mainframe, grinding rollers suspend on roller suspenders through horizontal supporting axes. High-pressure springs (1000-1500kg force) press rollers firmly against the grinding ring surface. When the motor drives the main shaft, shovels scoop material between rollers and ring for grinding .
● Classification: Ground powder is carried by airflow to the separator. The separator impeller speed determines final fineness—higher speed produces finer powder .
● Collection: Fine powder passes to the cyclone collector as finished product. Coarse particles return for regrinding in a closed-circuit system. Circulating air repeats the process, with excess air purified through bag filters .
Key advantage: When roller and ring wear occur, adjusting spring length maintains constant grinding pressure, ensuring stable output and consistent fineness over time .

Under the same power conditions, the high-pressure spring system increases roller compression force by 800-1200kgf, boosting production capacity by 10-20% compared to traditional Raymond mills . Some models achieve up to 30% higher output .
Processes over 280 types of materials with Mohs hardness ≤9.3, including:
● Barite – drilling mud weighting agent
● Limestone & calcite – construction fillers and desulfurization
● Dolomite, talc, gypsum – industrial powder applications
● Quartz, feldspar – ceramics and glass production
● Bentonite, kaolin – foundry and paper industries
Finished product size ranges from 0.613 mm (30 mesh) to 0.033 mm (425 mesh), with some materials achieving 0.013 mm (1000 mesh) . Coarse powder (30-80 mesh) can be produced by adding special equipment .
High-pressure suspension mills save approximately one-third of energy compared to similar products, reducing operational costs significantly .
Integrated bag filter systems and multi-class seals ensure dust emissions meet national standards, protecting worker health and the environment .
All systems operate from a centralized control panel, enabling convenient maintenance and semi-automated operation .
An Ethiopian gypsum processing plant required a reliable grinding solution for producing high-quality gypsum powder used in plasterboard and construction materials. The client needed consistent 80-325 mesh powder with production capacity of 5-8 tonnes per hour while maintaining energy efficiency and operational simplicity. Baichy supplied a complete YGM130 high-pressure suspension grinding mill system. The complete line included a jaw crusher, bucket elevator, vibrating feeder, cyclone collector, and pulse bag dust filter.
"The YGM130 exceeds our expectations—reliable output, excellent dust control, and energy-efficient operation. The high-pressure spring system makes a noticeable difference compared to traditional Raymond mills we have used before. Baichy's technical team provided excellent on-site installation support." — Plant Manager, Ethiopia

| Feature | Benefit |
| High-pressure spring system | 10-20% higher capacity vs. Raymond mills |
| 800-1500kgf compression force | Effective grinding of hard materials |
| Adjustable fineness 30-425 mesh | Versatile product specifications |
| Multi-class seals | Dust-tight operation, meets emission standards |
| Centralized electrical control | Semi-automated, easy maintenance |
| Durable cast components | Extended service life |
| CE & ISO certification | Quality assured |
The YGM series high-pressure suspension grinding mill offers a proven, efficient solution for fine powder processing across mining, chemical, and construction industries. With 10-20% higher capacity than traditional Raymond mills, adjustable fineness from 30 to 425 mesh, and integrated dust collection for compliant operation, this equipment delivers reliable performance for demanding mineral processing applications.
Contact Baichy today to discuss your grinding requirements and receive a tailored equipment recommendation for your specific material and capacity needs.
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