Overview
What Is A High-Pressure Suspension Mill
The high-pressure suspension mill, the YGM series, is an upgraded pendulum roller mill built for higher grinding force and finer product. It keeps the roller-and-ring arrangement of a Raymond mill but adds a high-pressure spring around each roller hanger. The spring applies a steady mechanical force of roughly 1,000-1,500 kg per roller on top of centrifugal force, so the roller presses the ring harder and throughput rises without a larger frame.
Where It Differs From A Standard Raymond Mill
The spring force is independent of rotor speed and roller mass. As rollers wear and lose diameter, the spring extends and keeps the grinding pressure constant, which a centrifugal-only mill cannot do. The high-pressure suspension mills are used in mining, metallurgy, chemicals, building materials, highways and water conservancy, and it fits calcium carbonate grinding, gypsum powder, power-plant desulfurization, non-metallic ore milling and coal powder preparation.
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Working principle
Spring-Assisted Grinding
The roller rotates around the main shaft and rolls tightly against the ring under the combined action of the high-pressure spring and centrifugal force. After material enters the chamber, the shovel lifts it into the gap between roller and ring, where the higher pressure grinds it more efficiently than a conventional pendulum mill.
Classification and Pressure Adjustment
Circulating air from the blower carries the ground powder to the separator. Qualified fines pass to the concentrator as finished product while coarse particles return to the chamber, and the excess air is cleaned through a bag filter before discharge. When the roller and ring wear, the spring length is adjusted to hold stable grinding pressure, protecting both capacity and fineness over the life of the wear parts.
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Features & Benefits
1. Higher output. Constant spring pressure raises throughput compared with centrifugal-only mills at the same power.
2. Wide product range. The same machine covers coarse 30-80 mesh through fine 425 mesh and beyond.
3. Stable performance as parts wear. The spring compensates for roller wear rather than letting pressure decay.
4. Clean discharge. The bag filter and multi-sealed grinding chamber meet dust emission standards.
5. Adjustable separator. Fineness is changed quickly without replacing components.
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Specifications
Model YGM75 YGM85 YGM95 YGM100 YGM130 YGM160 Roller piece 3 3 4 4 5 6 Roller diameter(R×H) 210×150 270×140 310×170 310×170 410×210 440×270 Ring diameter(R×H) 650×150 830×140 950×170 1000×170 1280×210 1600×270 Max.feeding size(mm) <15 <20 <25 <25 <30 <35 Fineness of product(mm) 0.613-0.033 0.613-0.033 0.613-0.033 0.613-0.033 0.613-0.033 0.613-0.033 Capacity(t/h) 1-3 1.2-4.6 2.1-5.6 2.5-8 3/12 5/22 Speed of main mill(r/min) 160 150 130 130 103 82 Power(kw) Main frame 18.5 22 30 37 75 132 Powderconcentrator 2.2 4 5.5 5.5 7.5 11 Air blower 15 22 30 37 75 132 Weight(t) 3.8 5.2 12.8 13.6 26.1 38 Overall dimension(mm) 4.1×3.5×5.1 5.3×4.1×5.2 7.1×5.9×7.9 7.3×7.2×8.3 8.8×7.5×9.7 12.55×5.7×8.36 -
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