Product Profile

Based on nearly 20 years mill research and operation experience, LUM Ultrafine Vertical Mill has been developed as the equipment for ultrafine powder grinding and separation. Its production introduces talents in ultrafine powder production and machine manufacturing industry, and absorbs the technologies and experience of ultrafine vertical mills from Germany, Japan and Taiwan, etc.

CLUM Ultrafine Vertical Mill is the specialized ultrafine grinding equipment for non-metallic ores. It suits for grinding non-flammable, non-explosive brittle materials with Moh’s hardness below 6 such as limestone, calcite, marble, talc, barite, brucite, wollastonite, pyrophyllite, dolomite, kaolin, lime, saponite, etc.

The mill takes Automatic Central Control System, widely used in paper-making, plastic, rubber, artificial stone, painting and coating industries. It is the specialized equipment for producing filler of large-scale paper-making plants and calcium carbonate for coating, and processing other large-scale ultrafine powder.

Working Principle

Motor makes grinding revolve under action of reduction gear. Materials, after being measured by belt scale, are sent to center of grinding disc by feeding screw. Because of centrifugal force, the materials would move towards the fringe of disc and then enter the grinding zone between grinding roller and disc to be ground. The materials which have been ground would keep moving toward fringe of grinding disc until they spill out of the disc. Through air inducing ring on the fringe of grinding disc, airflow sends these spilling materials to powder concentrator for classifying powders. The coarse powders which don’t meet the requirement of fineness would fall to the disc for another grinding while these qualified powders, as finished products, would be collected into dust collector and finally sent to finished product silo by conveying system for storage and packaging.

Product Features

  • Advanced Technology, Reliable Equipment

    A. Special grinding curves of grinding roller and grinding disc ensure stable and efficient operation of host machine.

    B. Grinding roller takes mechanical position limiter, directly avoiding touching grinding disc. Therefore, destructive collision and violent shocks are avoided.

    C. Special sealing design prevents dust from entering the inside of bearing to keep long-term operation of grinding roller.

    D. The high-efficiency powder concentrator can freely adjust the particle sizes and ensure the accurate cutting point and reproducibility of products.

  • A. Fineness of finished products can be adjusted flexibly. Primary powder production can reach D97=10μm-20μm while the next powder separation attains D97=4-5μm easily. Finished products have advantages of high content of fine powder, high whiteness and more compact granularity.

    B. Lingering time of materials in grinding cavity is short. The components and fineness of finished products can be measured and collected quickly, keeping stable quality of finished products.

    Better Finished Products, Higher Profits

  • Smooth Operation, Lower Costs

    A. Grinding roller grinds the materials directly. Its energy consumption is 10% lower than other types roller mill and 25-60% lower than that of ball mill.

    B. No direct touch between grinding roller and disc and the special wearable alloy materials used in grinding roller shell and lining plates grant a long life expectancy of mill and save the costs on quick-wear parts.

    C. Automatic control systems like PLC, DCS and Central Control System can be used to operate machines remotely, saving labor force.

  • A. Because of no touch between grinding roller and disc, there is no clang and slight vibration. The noise is 20-25 decibel lower than that of ball mill.

    B. The whole set of system is fully sealed and operates with negative pressure. Besides, it is equipped with pulse dust collector so the exhaust emission completely meets related national standards.

    Eco-friendly Design, Higher Standards

Product Advantage

High productivity

The output is 30% higher than that of traditional vertical mills.

Good quality

The fineness is higher than that of peers, the 2μ powder is 7%-8% higher.

Low power consumption

Power consumption is 10% lower than that of peers.

Good product stability

Product stability is far higher than that of peers; customers' viscosity is higher.

High system reliability

Operating rate is up to 95%-99%, which is considerably higher than that of peers.

Technical Parameter

Main configuration and production
Model Item CLUM1425 CLUM1632 CLUM1736
Working Diameters(mm) 1400 1600 1700
Number of rollers(pieces) 3 3 3
Number of classifier(pieces) 5 7 7
Power of classifier(Kw) 5X15 7X15 7X(15~18.5)
Main unit power(Kw) 250 315 355
Blower power(Kw) 200 250 315
Feed size(mm) <10mm <10mm <10mm
Moisture of feeding material <3% <3% <3%
Less than 2μm=34% output(t/h) 11-14 13-17 15-19
Less than 2μm=46% output(t/h) 7-8 9-10 11-12
Less than 2μm=60% output(t/h) 3-4 / /
Material: based on calcite Particle size distribution: measured by micro laser diffraction particle size analyzer in British Malvern3000 instruments

Certification and patent

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