Ball Mills

Our combined experience in ball mill design and process equipment development totals more than 60 years and allows us to put a unique spin on steel and lined mills.

Particle size reduction of materials in a ball mill with the presence of metallic balls or other media dates back to the late 1800’s. The basic construction of a ball mill is a cylindrical container with journals at its axis. The cylinder is filled with grinding media (ceramic or metallic balls or rods), the product to be ground is added and the cylinder is put into rotation via an external drive causing the media to roll, slide and cascade. Lifting baffles are supplied to prevent the outer layer of media to simply roll around the cylinder.

At Orbis Machinery we offer a variety of drive options to suit your needs:

  • Standard shaft mount reducer and belt drive
  • Gearwheel and pinion
  • Direct drive via in-line reducer
  • “Keyless” shafts

Mill cylinders are typically supplied with a cooling jacket on their cylindrical portion for temperature control, especially when processing temperature-sensitive materials. For extreme temperatures, the ends of the cylinder can also be furnished with cooling apparatus.

View a Reverse Engineered Patterson Ball Mill Cylinder

Sizes range from laboratory mills to 12' in diameter.

Discharge Features

For discharge of the product on wet grinding processes we offer our standard media retention grate along with an adequate size discharge valve.

For discharge of the product on dry grinding processes we offer our dry media retention grate and housing.

 

BALL MILL LOADING GUIDE

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Design Options

  • Vibration Isolators
  • Sound Dampening Insulation
  • Indexing System with Holding Brake
  • Pedestal Extensions
  • Safety Enclosures
  • ASME Code Stamped Jackets
  • Explosion Proof Motors
  • Variable Speed Drives
  • Turn Key Controls

Left: Standard 2 X 2 X 6 Tapered Tongue and groove cylinder alumina brick lining.
Right: One piece ceramic cover with silicone O Ring allows for leakproof operation.


Models

Steel Ball Mills

Model # Total Capacity
(Cu.Ft)
Cylinder
Diameter (in)
Cylinder
Length (in)
Cylinder speed
(60% critical)
HP (Wet)
(Stl media)
HP (Dry)
(Stl media)
SBM-1618-2 2 16 18 40 1/2 3/4
SBM-1723-3 3 17 23 39 3/4 1 1/2
SBM-2028-5 5 20 28 36 1 1/2 2
SBM-2431-8 8 24 31 33 2 5
SBM-2535-10 10 25 35 32 3 5
SBM-3037-15 15 30 37 29 5 7 1/2
SBM-3340-20 20 33 40 28 7 1/2 10
SBM-3846-30 30 38 46 26 10 15
SBM-4446-40 40 44 46 24 15 25
SBM-4652-50 50 46 52 24 20 30
SBM-4858-60 60 48 58 23 25 40
SBM-5558-80 80 55 58 22 30 50
SBM-6061-100 100 60 61 21 40 75
SBM-6367-120 120 63 67 20 40 75
SBM-6671-140 140 66 71 20 60 100
SBM-7072-160 160 70 72 19 75 125
SBM-7285-200 200 72 85 19 100 150
SBM-7887-240 240 78 87 18 125 200
SBM-78102-280 280 78 102 18 125 200

Other Popular Industry Standard Sizes

Model # Total Capacity
(Cu.Ft)
Cylinder
Diameter (in)
Cylinder
Length (in)
Cylinder speed
(60% critical)
HP (Wet)
(Stl media)
HP (Dry)
(Stl media)
SBM4848-50 50 48 48 23 20 30
SBM4860-63 63 48 60 23 25 40
SBM6060-98 98 60 60 21 40 75
SBM6072-118 118 60 72 21 50 100
SBM7260-141 141 72 60 19 60 100
SBM7272-170 170 72 72 19 75 125

Lined Ball Mills

Model # Total Capacity
(Cu.Ft)
Cylinder
Diameter (Stl, in)
Cylinder
Length (Stl, in)
Cylinder speed
(60% critical)
HP (Wet)
(Alum media)
HP (Dry)
(Alum media)
Lining Thickness
(90% Alumina) (in)
LBM-1820-2 2 18 20 40 1/4 1/2 1
LBM-1925-3 3 19 25 39 1/2 3/4 1
LBM-2230-5 5 22 30 36 3/4 1 1
LBM-2633-8 8 26 33 33 1 1-1/2 1
LBM-2737-10 10 27 37 32 1-1/2 2 1
LBM-3239-15 15 32 39 29 2 5 1
LBM-3744-20 20 37 44 28 3 5 2
LBM-4250-30 30 42 50 26 5 10 2
LBM-4850-40 40 48 50 24 7-1/2 10 2
LBM-5056-50 50 50 56 24 10 15 2
LBM-5262-60 60 52 62 23 10 20 2
LBM-5962-80 80 59 62 22 15 25 2
LBM-6465-100 100 64 65 21 20 30 2
LBM-6771-120 120 67 71 20 25 40 2
LBM-7075-140 140 70 75 20 25 40 2
LBM-7476-160 160 74 76 19 30 50 2
LBM-7689-200 200 76 89 19 40 60 2
LBM-8291-240 240 82 91 18 50 75 2
LBM-82103-280 280 82 106 18 60 100 2

Other Popular Industry Standard Sizes

Model # Total Capacity
(Cu.Ft)
Cylinder
Diameter (Stl, in)
Cylinder
Length (Stl, in)
Cylinder speed
(60% critical)
HP (Wet)
(Alum media)
HP (Dry)
(Alum media)
Lining Thickness
(90% Alumina) (in)
LBM4848-39 39 48 48 24 10 15 2
LBM4860-49 49 48 60 24 10 15 2
LBM6060-80 80 60 60 21 15 25 2
LBM6072-97 97 60 72 21 20 30 2
LBM7260-118 118 72 60 19 25 40 2
LBM7272-143 143 72 72 19 30 50 2

ORBIS MACHINERY CAN MANUFACTURE ANY SIZE AND BRAND REPLACEMENT MILL CYLINDER BODY TO FIT ON YOUR CURRENT SUPPORT STANDS

MIXING    BLENDING    DRYING    MILLING

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