Makino, as a specialist in crushing, filtration, and drying, supports manufacturing in a wide range of fields, from industry to the environment.

Ball mill(Dry/Wet):Crushing

Crushing

Ball mill(Dry/Wet)

Main specifications

Type Average particle size Operation system
Dry ~ 5μm Batch milling
Wet

A fine milling, applicable to a wide range of fields

Features

  • A fine milling machine in which raw material and ball media such as ceramics are fed into a
    horizontally rotating drum, and milling is carried out by collision with ball media and by crushing
    and its impact with the media and drum inner wall surface.
  • Various types of lining materials are available, making it possible to suggest the most suitable
    specifications for raw materials.
  • We also suggest milling media depending on the purpose of use.
  • Simple structure and easy to maintain.
It is used for:
  • Material for electronic parts
  • Ceramic
  • Magnetic material
  • Battery materials
  • Glasses
  • Abrasives
  • Pigments
  • Flavors
  • Minerals, etc.

Rotating speed

Rotating speed (N) differs, depending on the size of mill and meling media, whether or not there are
inner lifting bars, type of milling; dry or wet. In general, optimum speed is represented by the
ratio (N/Nc) for critical speed (Nc). Critical speed (Nc) is a rotating speed of the time when milling
media is crimped on the wall of the mill by centrifugal force while mill speed is being increased.


Rotating speed:<br />
N<<Nc(Surging condition)

Rotating speed:
N<<Nc(Surging condition)

N<Nc (Cataracting condition)

N<Nc
(Cataracting condition)

N=Nc(Critical condition)

N=Nc
(Critical condition)

Calculate rotating speed at milling media ⌀30mm, Dry type 75%. Wet type 65%.
●for dry type……N / Nc×100=70 ~ 80% ●for wet type……N / Nc×100=60 ~ 70%

Milling type

Dry milling

Only material and milling media are
fed into the drum.
Less contaminant from liners and
milling media.

Milling type Dry milling

Wet milling

Material and milling media are fed
into the drum with water or organic
solvent.
Suitable to mix and compound
materials.

Milling type Wet milling

Overall dimensions

Overall dimensions Reference:BM50D-A

Reference:BM50D-A

Overall dimensions Reference:BM50W-A

Reference:BM50W-A

Specifications

Dry type (Lining materials: Alumina, stainless steel, wear resistant steel, rubber, nylon, natural stone, etc.)
Model Drum outer dia x L
(mm)
Inner volume (ℓ) Rotation
(r/min)
Power
(kW)
Dimensions
L × W × H (mm)
Machine weight
(kg)
Alumina brick
BM50D-A ⌀606 × 606 110 45 1.5 1600 ×1000 × 1200 700
BM100D-A ⌀606 × 757 140 45 1.5 1600 × 1000 × 1400 1200
BM200D-A ⌀909 × 909 440 36 3.7 2000 × 1300 × 1700 2000
BM500D-A ⌀1212 × 1212 1070 31 7.5 2300 × 1900 × 2100 3600
BM1000D-A ⌀1515 × 1515 2190 27 22 3200 × 2400 × 2700 6000
BM2000D-A ⌀1818 × 1818 3930 25 37 3800 × 2500 × 2800 12000
BM3000D-A ⌀2120 × 2120 6370 23 55 4000 × 2600 × 3200 15500
BM4000D-A ⌀2424 × 2424 9700 21 75 4600 × 2700 × 3300 18000
BM6000D-A ⌀2727 × 2727 14000 20 110 5000 × 3300 × 4000 20000

Numeric value is a representative example, so power might be changed by the feeding condition.
Specifications and sizes are subject to change without notice.

Wet type (Lining materials: Alumina, stainless steel, wear resistant steel, rubber, nylon, natural stone, etc.)
Model Drum outer dia x L
(mm)
Inner volume (ℓ) Rotation
(r/min)
Power
(kW)
Dimensions
L × W × H (mm)
Machine weight
(kg)
Alumina brick
BM50W-A ⌀606 × 606 110 39 0.75 1400 × 900 × 1400 750
BM100W-A ⌀606 × 757 140 39 0.75 1800 × 800 × 1550 900
BM200W-A ⌀909 × 909 440 31 2.2 2000 × 1200 × 1900 1300
BM500W-A ⌀1212 × 1212 1070 27 5.5 2600 × 1700 × 2600 3500
BM1000W-A ⌀1515 × 1515 2190 24 15 3000 × 1900 × 2800 4800
BM2000W-A ⌀1818 × 1818 3930 21 22 3800 × 2600 × 4700 12000
BM3000W-A ⌀2120 × 2120 6370 20 45 4100 × 2600 × 3300 15500
BM4000W-A ⌀2424 × 2424 9700 18 55 4500 × 2600 × 4100 18000
BM6000W-A ⌀2727 × 2727 14000 17 90 5500 × 4300 × 3800 20000

Numeric value is a representative example, so power might be changed by the feeding condition.
Specifications and sizes are subject to change without notice.

Simulation by DEM

Made by: Tohoku University, Institute of Multidisciplinary Research for Advanced Materials, Kano lab.

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