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LM series vertical grinding mill is one advanced powder making mill which is developed through many years’ research &experience and bringing in the latest mechanical techniques of Europe. It is one complete plant that integrated with drying, milling, classifier and elevator. It is the high standard mill with many advantages, like taking a little space, high efficiency and energy-saving, and the LM vertical mill fully meets the requirement of clients in the high production of powder.

According to LM mill’s different applications, it contains three series. K series LM vertical grinding mill is suit for producing raw cement; The M series fit for grinding coal powders and N series LM vertical mill is mainly used to pulverize hard materials, such as slag, cement clinker and many other chemical materials.

Motor drives millstone-device through reducer and the hot air comes into the machine from the air inlet. When the materials are fed to the centre grinding plate, they move to the edge of grinding plate under the action of centrifugal force. Then the material are grinded by the grinding rollers when they pass through the grinding zone. Crushed materials continue to move to the edge of the grinding plate until taken away by the airstream. The big ones fall down and the process of grinding continues. The qualified ones pass through the separator and are gathered by the collector.If there are some irons or some other sundries, they will fall down from the grinding chamber under the action of gravity when they move to the edge of millstone device. Finally, the scraper will clear them from the grinding machine.

LM vertical grinding system is made of raw material feeding system, grinding system, drying system and final-products transportation system, etc. For special materials, the auxiliary system is optional, such as explosion protection system.
The drying system include two types, the pulse dust filter open circle system (without hot air) and pulse dust filter open circle system (with hot air).

Pulse dust filter open circle system (without hot air)

Raw materials in the hopper are lifted by elevator and pass though air-lock device, enter into the grinding chamber. Ground by the LM grinding mill, powders are collected and transported to silo. The advantages of this system are that it has simple structure, low investment and operation cost. For there is no heat source, it is suit for grinding dry material, the moisture should below 4%.

Pulse dust filter open circle system
(With Hot Air)

One hot-blast stove is installed in this system, powders can be dried during the grinding process, helping clients save one dryer. And the off-gas are recyclable, the fuel cost is cut down obviously.

This product sets crushing, drying, grinding, classifying and transportation as a whole, and it has simple system and compact structure, it takes 50% occupation area of ball mill and can be installed in outdoor sites, reducing the investment cost greatly.

  • Low Abrasion
  • High Efficiency
  • Excellent drying function
  • Easy to maintain
  • Expert Control System
  • Low Abrasion

    Because the rollers do not rub the grinding plate directly and both of them adopt the finest material, the service life is extended and the abrasion is reduced.

  • High Efficiency

    Rollers grind the material on the grinding plate directly, reducing 30% ~ 40% energy consumption compared to ball mill.

    Rollers & Mill Plate

  • Excellent drying function

    The inner hot wind can dry all the powders directly; this function not only helps investors save the investment cost of dryers and reduce the energy consumption. Different requirements of different moistures are easy to solved by adjusting the temperature of the hot wind.

    The Drying Process

  • Easy to maintain

    By controlling the hydraulic device and turning the lift arm, it is easy to replace the roller sleeves, grinding plates. In this way, both maintenance time and labor cost are saved.

    Limiting stoppers are equipped in this machine, they can protect the roller from impacting millstone device directly, averting devastating-impact and reducing the failure rate.

  • Expert Control System

    LM vertical mill is equipped with Expert Control System, operators can switch remote-control and local-control freely. And it is easy to operate, good for saving labor cost.

    Expert Control System

Due to the short residence time, materials are prevented from being re-ground, the particle sizes are easy to control and the chemical compositions are well kept. For the roller don’t contact with the millstone device directly, there is few Fe attrition,it efficiently reduces the pollution when this machine is used to grind white or hyaline materials.LM vertical grinding mill adopt combined-type high efficiency classifiers. The rotor REV is adjustable, so it is able to meet different requirements.

LM Vertical grinding mill perform steady and has little vibration, so it is of little noise. Benefit from its negative-pressure working environment, it is of little dust, achieving Environmental Protection Request well.

  • K Series LM Vertical Mill
  • M Series Vertical Mill
  • N Series LM Vertical Mill
  • Name

    K Series LM Vertical Mill

    Model

    LM130K

    LM150K

    LM170K

    LM190K

    LM220K

    Rollers

    2

    2

    2

    2

    2

    Wheel diameter (mm)

    1100

    1300

    1400

    1500

    1900

    Millstone Diameter(mm)

    1300

    1500

    1700

    1900

    2200

    Output (t\h)

    10-30

    13-40

    18-57

    23-72

    36-110

    Fineness

    µm

    170-45

    170-45

    170-45

    170-45

    170-45

    Mesh

    80-325

    80-325

    80-325

    80-325

    80-325

    End product moisture (%)

    ≤1%

    ≤1%

    ≤1%

    ≤1%

    ≤1%

    Grinding material particle sizeD80 (mm)

    <10

    <10

    <10

    <10

    <10

    Grinding material max feed size (mm)

    <38

    <40

    <42

    <45

    <50

    Moisture of grinding material not to dry (%)

    <4%

    <4%

    <4%

    <4%

    <4%

    Moisture of grinding material need to dry (%)

    4%-15%

    4%-15%

    4%-15%

    4%-15%

    4%-15%

    Input wind temperature(℃)

    <350

    <350

    <350

    <350

    <350

    Output wind temperature(℃)

    70-95

    70-95

    70-95

    70-95

    70-95

    Main Motor Power (kw)

    200

    280

    400

    500

    800

    Size

    Length(mm)

    5520

    6550

    7170

    7580

    8080

    Width(mm)

    2500

    3070

    3460

    3820

    6700

    Height(mm)

    7060

    7560

    8300

    8960

    9020

  • Name

    M Series Vertical Mill

    Model

    LM130M

    LM150M

    LM170M

    LM190M

    LM220M

    Rollers

    2

    2

    2

    2

    2

    Wheel diameter (mm)

    1100

    1300

    1400

    1500

    1900

    Millstone Diameter (mm)

    1300

    1500

    1700

    1900

    2200

    Output(t\h)

    10-15

    16-22

    20-28

    26-35

    35-50

    Pulverized Coal Fineness(R0.08)

    5-20%

    5-20%

    5-20%

    5-20%

    5-20%

    Moisture of Pulverized Coal (%)

    <1%

    <1%

    <1%

    <1%

    <1%

    Grinding material particle sizeD80 (mm)

    <10

    <10

    <10

    <10

    <10

    Grinding material max feed size (mm)

    <38

    <40

    <42

    <45

    <50

    Raw Coal Moisture (%)

    <15%

    <15%

    <15%

    <15%

    <15%

    Input wind temperature(℃)

    <350

    <350

    <350

    <350

    <350

    Output wind temperature(℃)

    75-95

    75-95

    75-95

    75-95

    75-95

    Raw Coal Hardgrove Grindingablility(HGI)

    >55

    >55

    >55

    >55

    >55

    Main Motor Power(kw)

    185

    250

    315

    400

    500

    Size

    Length(mm)

    5520

    6550

    7170

    7580

    8080

    Width(mm)

    2500

    3070

    3460

    3820

    4660

    Height(mm)

    7060

    7560

    8300

    8960

    9020

  • Name

    N Series LM Vertical Mill

    Model

    LM130N

    LM150N

    LM170N

    LM190N

    LM220N

    Rollers

    2

    2

    2

    2

     2

    Wheel diameter (mm)

    1100

    1300

    1400

    1500

    1900

    Millstone Diameter (mm)

    1300

    1500

    1700

    1900

    2200

    Output(t\h)

    5-14

    7-20

    8-27

    9-30

    18-55

    Fineness

    µm

    170-45

    170-45

    170-45

    170-45

    170-45

    Mesh

    80-325

    80-325

    80-325

    80-325

    80-325

    End product moisture (%)

    ≤1%

    ≤1%

    ≤1%

    ≤1%

    ≤1%

    Grinding material particle sizeD80 (mm)

    <10

    <10

    <10

    <10

    <10

    Grinding material max feed size (mm)

    <38

    <40

    <42

    <45

    <50

    Moisture of grinding material not to dry (%)

    <4%

    <4%

    <4%

    <4%

    <4%

    Moisture of grinding material need to dry(%)

    4%-15%

    4%-15%

    4%-15%

    4%-15%

    4%-15%

    Input wind temperature(℃)

    <350

    <350

    <350

    <350

    <350

    Output wind temperature(℃)

    70-95

    70-95

    70-95

    70-95

    70-95

    Main Motor Powe (kw)

    200

    280

    400

    500

    800

    Size

    Length(mm)

    5520

    6550

    7170

    7580

    8080

    Width(mm)

    2500

    3070

    3460

    3820

    6700

    Height(mm)

    7060

    7560

    8300

    8960

    9020

Note:
1.The raw material must be the materials labeled in the annotation.
2.Supposing that the raw material moisture is bigger than the requirements, or operators have special requirements, operators can use hot wind.
3.The parameter is for reference. Detailed configuration depends on the practice.

  • LM190M
  • |
  • LM130M
  • |
  • LM130N
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  • This LM vertical grinding mill plant are designed for grinding bituminous coal, customer’s requirements are 170mesh=D93 (R0.07) and the capacity should be about 25-30TPH. Now, they expressed that they got what they want.

    LM190M

  • This is one silica powder grinding plant. Base on customer’s requirements, the final design use LM130N vertical mill, which can reach the capacity of 6-10TPH and the fineness of 400 m2/g.

    LM130M

  • The customer require us design one bituminous coal powder plant, the capacity is above 12TPH and the fineness is 90μm=R0.1. After negotiation, LM130M vertical mill is used.

    LM130N

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