Low Shear – High Volume Mixers with Counter-Current Technology.

Lancaster Products L-Series counter-current mixers are equipped with hi-torque, low shear, rotating plow blades. The L-Series mixer can come with muller wheels as an option, which combines a kneading, rubbing, or smearing action of a mortar and pestle along with the intensive mixing of the counter-current system. L-Series industrial mixers can be manual, fully automatic or a combination of both and can be used for research, testing or production.

Lancaster L-Series Mixers are ideal for:

  • Low shear or low energy mixing
  • Suitable for Shear Thickening or Non-Newtonian materials
  • Mixing, slow or delayed chemical reactions
  • Capacities from: 0.1 cu ft to 80 cu ft

TOOLING OPTIONS

Low Shear Tool Action

Lancaster Products engineering staff can assist in selecting the appropriate mixing tools depending on the characteristics of the materials to be processed.

Low Shear tooling options include:

  • Plow action alone, or plow with mulling wheels
  • Fork tines or cutters can be substituted for plows

When mulling action is desired, the mulling wheels are adjusted above the mixing pan bottom to clear the largest grain size. This feature prevents particle size change or destruction.

Tooling Options Graphic
LP Low Shear Mixer Front View-Open

HOW IT WORKS

The counter-current mixing action of the Lancaster Mixer is widely accepted as the most effective technique for consistent uniformity and thoroughness. Simply stated, counter-current action occurs when the pan rotates in one direction, while the mixing tools rotate in the other.

The rotating mixing pan conveys the material to the counter-rotating tool assembly. This results in countless cross-over of layers with maximum particle travel both vertically and horizontally, without depending on free fall.

Depending on the material and application, mulling can be an important addition to mixing. Equipping Lancaster Mixers with muller assemblies imparts a kneading and smearing action of a mortar and pestle needed for some applications such as foundry sands, along with the intensive mixing of the counter-current system.

LOW SHEAR MIXING APPLICATIONS:

Mixing Applications

Look to the Lancaster Products L-Series Mixer for advanced techniques for mixing solids or solids with liquids. Lancaster L-Series low-shear mixers can be adapted to process dusty, abrasive, corrosive, highly viscous or explosive materials and can be used for research, testing or production.

Lancaster Products L-Series counter-current industrial mixing equipment can handle materials from powders to pastes – regardless of differences in particle sizes, shapes, weights, and hardness.

Mixing Applications

L-Series Low-Shear Mixers

PC LWD 30-DP 1-DP
Min Batch Capacity
3/4" layer,
1/20 cubic foot,
or 1/3 gallon
19mm layer,
1.4 dm3,
or Liter
1"-layer
1/8 cubic foot,
or 1 gallon
25mm layer,
3.5 dm3, or
3.5 Liters
1" layer,
3/8.cubic foot,
or 3 gallons
25mm layer,
11 dm3, or
11 Liters
1" layer,
3/8 cubic foot,
or 3 gallons
25mm layer ,
11 dm3, or
11 Liters
Max Batch Capacity
1-1/2" layer,
1/10 cubic foot,
or 3/4 gallon
(10 pounds)
38mm layer,
2.8 dm3,
2.8 Liters,
(4.5 kgs)
4-3/4" layer,
5/8 cubic foot,
or 5 gallons,
(65 pounds)
120 mm layer,
18 dm3,
18 Liters,
(29 Kgs)
4" layer,
1-3/4 cubic foot,
or 13 gallons,
(175 pounds)
100 mm layer,
50 dm3,
50 Liters
(79 Kgs)
4-1/2" layer,
2 cubic foot,
or 15 gallons,
(200 pounds)
112 mm layer,
57 dm3,
57 Liters,
(91 Kgs)
Mixing Pan
12" diameter
5" H
305mm diameter
127 mm H
18" diameter
8.5" H
457mm diameter
216 mm H
29.5" diameter
11" H
749mm diameter
279mm H
29.75" diameter
14" H
756mm diameter
356mm H
Mixing Pan Power
Direct Connected
1/4 HP
gear motor
3/60/230-460V
Direct Connected
0.18 kW
gear motor
3/60/230-460V
1 HP
gear motor
3/60/230-460V
0.74 kW
gear motor
3/60/230-460V
3 HP
gear motor
3/60/230-460V
2.2 kW
gear motor
3/60/230-460V
3 HP
gear motor
3/60/230-460V
2.2 kW
gear motor
3/60/230-460V
Mixing Pan Discharge removable pan removable pan removable pan central discharge
Tooling Power
Direct Connected
1/4 HP
gear motor
3/60/230-460V
Direct Connected
0.18 kW
gear motor
3/60/230-460V
Direct Connected
1 HP
gear motor
3/60/230-460V
Direct Connected
0.74 kW
gear motor
3/60/230-460V
Direct Connected
3 HP
gear motor
3/60/230-460V
Direct Connected
2.2 kW
gear motor
3/60/230-460V
3 HP
gear motor
3/60/230-460V
2.2 kW
gear motor
3/60/230-460V
Size
16" W
30" D
40" H
325 pounds
406mm W
762mm D
1M H
147 kilograms
23" W
32" D
58" H
1100 pounds
584mm W
813mm D
1.5M H
500 kilograms
32" W
59" D
71" H
1850 pounds
813mm W
1.5M D
1.8M H
839 kilograms
35" W
67" D
78" H
3000 pounds
889mm W
1.7M D
1.2M H
1,361 kilograms

Lancaster Products
920 Mechanic Street
Lebanon, PA 17046

Local: 717.273.2111
Toll Free: 800.447.7351

Email: [javascript protected email address]

Office Hours:
Mon - Fri: 8:00 am - 5:00 pm

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The K4 mixer introduces a third tool, the low-speed plow, which, along with the rotating pan, transports material to the high-speed rotor. You can see how the high shear counter-current movement creates a rolling action which agglomerates the materials into pellets. The K4 mixer has a bottom discharge; the plow allows for the rapid and complete evacuation of the mixing cavity. After the mixer is fully evacuated, the bottom discharge closes, and reseals ready for the next batch.

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Looking inside of the mixing cavity, you see the counter-current mixing action. The pan rotates clockwise, and the high shear mixing tool spins counterclockwise. The mixing pan actively transports material to the primary mixing tool. Slowing the action down gives us a good view of how the Lancaster mixing action creates a tumbling that promotes agglomeration by rolling the particles much the same way as a snowball growing larger by rolling down a hill.

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