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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.

LUM 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.

Industrial Application

  1. Typical Material Application
  2. Professional Fields
  • Barite

    Barite

    Moh's hardness:2.5-3.5

    market value:X dollar

    main application:oil drilling、chemical industry、glass、rubber、construction industry

  • Dolomite

    Dolomite

    Moh's hardness:2.5-3.5

    market value:X dollar

    main application:oil drilling、chemical industry、glass、rubber、construction industry

  • Kaolin

    Kaolin

    Moh's hardness:2.5-3.5

    market value:X dollar

    main application:oil drilling、chemical industry、glass、rubber、construction industry

  • Limestone

    Limestone

    Moh's hardness:2.5-3.5

    market value:X dollar

    main application:oil drilling、chemical industry、glass、rubber、construction industry

  • Paper-making Field

    Paper-making Field

    Combining wet grinding, the materials processed by ultrafine vertical mill like calcium carbonate are always characterized by high whiteness, high capacity, low iron content, low power consumption. It is the ideal pre-processing mill which should be given priority to by large-scale paper-making plants before wet grinding.

  • Rubber Field

    Rubber Field

    The tailored rubber powder, produced by ultrafine vertical mill, has good reinforcement. In terms of stretching resistance, tear resistance, resilience, ageing resistance, the powder can replace part hard charcoal as filler, apparently cutting the production costs of downstream products.

  • PVC Product Field

    PVC Product Field

    Characterized by rigidity enhancement and excellent processing performance, PVC hard product powder, produced by ultrafine vertical mill can basically substitute light calcium to reduce production costs drastically under the premise of keeping high-quality of PVC.

  • Artificial Stone Field

    Artificial Stone Field

    Ultrafine vertical mill, as the best modified grinding equipment for artificial stone powder production, can directly undergo modification during grinding. Artificial stone powder produced by ultrafine vertical mill has advantages of low oil absorption and satisfying grading. It reduces the addition of artificial resin and production costs while the product quality is reliable.

Working Principle

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.

Technological Process

Technological Process

1. Each Parts of Ultrafine Vertical Mill

A. Main Machine

B. Motor

C. Gear Motor

D. Grinding Roller

E. Pressure Device of Hydraulic Cylinder

F. Powder Concentrator

G. Hydraulic Station & Lubrication Station

 

2. Production Process

A. Crushing system: raw material silo; feeder; jaw crusher; belt conveyor; de-ironing separator; hammer crusher; elevator; dust collector; surge bin.

B. Grinding system:quantitative belt scale;elevator; spiral conveyor; de-ironing separator; ultrafine vertical mill; pulse dust collector; fan; air door.

C. Conveying system: elevator or pneumatic conveyor.

D. Auxiliary system: agent adding system; compressed air system; water cooling system.

Technical Parameter

Machine model LUM1125 LUM1232 LUM1436
Roller number 3 3 3
Main machine power (KW) 185-250 280-315 355-410
Single rotor classifier power (KW) 75 75 75
Multi-rotor classifier power (KW) 5×15 7×15 7×(15-18.5)
Power of fan (KW) 160-200 220-250 255-355

LUM1125 Technical parameter

Assessment items Ultrafine ground calcium carbonate
Capacity t 11.0~14.0 8.0~10.0 7.0~8.0 5.0~6.0 3.0~4.0
Blaine cm2/g 11000±500 13500±500 15000±500 17000±500 19000±1000
325mesh residue % 0.015 0.015 0.01 0 0
<2um % 34 38 46 53 60
Mean diameter:D50 um 4.2 3.0 2.4 1.8 1.4
  mesh 600 800 1250 2000 2500
Size distribution:D97 um 30 25 20 15 9
Size cut um 80 48 38 28 18
Moisture % <0.3 <0.3 <0.3 <0.3 <0.3
Power KW/Ton 38~40 40~50 47~53 50~53 110~125
Test method

1. Size distribution: The data is based on MALVERN company's MALVERN3000 laser winding particle size analyzer.

2. Blaine: Transfer from size distribution, unit is a relative area of 1 g of powder

3. Mean diameter: derive from size distribution

4. 325mesh residue: 1000 g sample was placed on a 325 mesh screen by wet method

5. Moisture: 5 g of the sample was measured at a moisture analyzer at 6℃ for 6 minutes

6. Grinding material: limestone, calcite, dolomite, talc, barite, wollastonite, brucite, calcium hydroxide, gypsum, coking coal, slag, phosphate and so on.

LUM1232 Technical parameter

Assessment items Ultrafine ground calcium carbonate
Capacity t 13.0~17.0 11~13 9.0~10.0 7.0~8.0
Blaine cm2/g 11000±500 13500±500 15000±500 17000±500
325mesh residue % 0.015 0.015 0.01 0
<2um % 34 38 46 53
Mean diameter:D50 um 4.2 3.0 2.4 1.8
  mesh 600 800 1250 2000
Size distribution:D97 um 30 25 20 15
Size cut um 80 48 38 28
Moisture % <0.3 <0.3 <0.3 <0.3
Power KW/Ton 38~40 40~50 47~53 50~53
Test method

1. Size distribution: The data is based on MALVERN company's MALVERN3000 laser winding particle size analyzer.

2. Blaine: Transfer from size distribution, unit is a relative area of 1 g of powder

3. Mean diameter: derive from size distribution

4. 325mesh residue: 1000 g sample was placed on a 325 mesh screen by wet method

5. Moisture: 5 g of the sample was measured at a moisture analyzer at 6℃ for 6 minutes

6. Grinding material: limestone, calcite, dolomite, talc, barite, wollastonite, brucite, calcium hydroxide, gypsum, coking coal, slag, phosphate and so on.

LUM1436 Technical parameter

Assessment items Ultrafine ground calcium carbonate
Capacity t 14.0~19.0 12.5~14.5 10.0~11.0
Blaine cm2/g 11000±500 13500±500 15000±500
325mesh residue % 0.015 0.015 0.01
<2um % 34 38 46
Mean diameter:D50 um 4.2 3.0 2.4
  mesh 600 800 1250
Size distribution:D97 um 30 25 20
Size cut um 80 48 38
Moisture % <0.3 <0.3 <0.3
Power KW/Ton 38~40 40~50 47~53
Test method

1. Size distribution: The data is based on MALVERN company's MALVERN3000 laser winding particle size analyzer.

2. Blaine: Transfer from size distribution, unit is a relative area of 1 g of powder

3. Mean diameter: derive from size distribution

4. 325mesh residue: 1000 g sample was placed on a 325 mesh screen by wet method

5. Moisture: 5 g of the sample was measured at a moisture analyzer at 6℃ for 6 minutes

6. Grinding material: limestone, calcite, dolomite, talc, barite, wollastonite, brucite, calcium hydroxide, gypsum, coking coal, slag, phosphate and so on.

Product Features

Ultrafine Vertical Mill VS Ball Mill

Project Ultrafine Vertical Mill Ball Mill
Energy Consumption 30% - 50% lower than that of ball mill. High.
Occupied Area 50-70% of that of ball mill Large.
Feeding Size Depending on size of grinding roller Limited by maximum steel ball; Feeding size is relatively
Depending on size of grinding roller. Permissible for relatively large raw materials. small.
Product Fineness Adjustable grinding pressure; A large amount of fine powder can be produced. Depending on materials ground. Usually, fine powder proportion is relatively low.
Time for Product Replacement Available to replace one kind of materials for grinding another kind of materials in one mill in short time. Long time needed to clear previous materials.
Product Whiteness High whiteness Grinding medium pollution
Initial Investment Costs Slightly higher than ball mill more than ball mill Compared with ultrafine vertical mill, it has a slight advantage.
Operation Cost Very low. Quick-wear parts have low power consumption. High. High power consumption is incurred by quick-wear parts.
Noise Lower than ball mill in plants. High
Shape of Products Degree of sphericity is good. Degree of sphericity is relatively better.
Sensitivity toward Foreign Materials Sensitive to metal. Insusceptible to foreign matters.

Customer Case

  • A

    A Paper Mill in Vietnam

    Adopting our 1232 ultra-fine grinding mill rather than the original powder making machine, the customer has greatly improved the product stability. The particle size analysis demonstrates that the particle size distribution is narrow and fine powder content (2UM up to 30%) does not contain any secondary pollution, which has extensively enhanced the product quality. Our customers have won back all the investment cost just for one year and expressed highly praise for our products.

  • A paper mill in Malaysia

    A paper mill in Malaysia

    Employing our 1125 ultra-fine grinding mill with whiteness consistent to the ore, high purity and stable operation instead of the previous Raymond mill production, our customer has greatly improved the product quality. DCS control system makes the operation become extremely simple. With the advantages of effective environmental protection and low production costs, our machine has gained good reputation.

  • Nigeria, a powder processing plant

    Nigeria powder processing plant

    Our 1125 ultra-fine grinding mill features high fine powder content, stable particle size and product quality 10-15% higher than the market price, which leads to the product short supply. Consequently, we are prepared to expand the second production line.