Design Qualification of Colloid Mill

Colloid Mill

The design of colloid Mills is based on years of experience in wet communication, homogenization, emulsification, dispersion, fluidization mixing, etc.

The principle of the Colloid Mill is based on the Stator /Rotor Principle. The stator is ring-shaped with two different staggered special design tooth stages and conical shape tuning inside the stator with a special shape helical tooth system. The initial Rotor Stage is shaped with impeller blades as a preliminary drum, seizing the material, pre-breaking in, and throwing it into the first station tooth stage. The product is fed to the operating area of a Rotor, having a speed of approximately 3000 R.P.M. by a specially designed feed device. The product is processed by high shear, pressure, and friction between the Stator and Rotor, besides the high shear, beating, collisions, bombarding, and friction, the product is exposed to intense vibration which exerts its force in it through pressing and realizing actions. At the last stage of processing, the product is exposed to a basic oscillating frequency of 6000 Hz. The first upper oscillation of this stage lies with 18000 Hz utmost within the supersonic region, which explains high efficiency. The processed product continuously leaves the mill through the drain pipe, if required, it can be recirculated.

Due to the slightly deviating tapering of the milling surfaces of the stator and rotor, the annular gap becomes narrower towards the discharge section. The special design facilitates adjustment of the grinding gap by an exterior screw even during operation.

Control / Electrical Panel

Operating Control Panel

The Non-Flame proof control panel is made of MS covered with SS cover. It is located on the Machine.

The control panel contains.


Design Qualification of Colloid Mill


To design, engineer, and supply the Colloid Mill and to provide assurance that the machine is manufactured and complies with the Scope of Supply.

To prove that each operation proceeds as per the design qualification and the tolerances prescribed there in the document are the same at utmost transparency.

The scope of this qualification document is limited to the Design Qualification of Colloid Mill.  This qualification document is part of a validation activity for the Colloid Mill.


CLIENT: To Check and Approve the design qualification.


To design, engineer, and provide the complete technical details of the equipment pertaining to its design qualification viz.

  • Machine overview,
  • General arrangement drawing,
  • Equipment orientation with layout,
  • Specifications of the sub-components/ bought out items, and their make, model & quantity, and backup records/ brochures,
  • Details of Utilities,
  • Material of construction of all components
  • To confirm the safe delivery of the equipment to the user site.

To ensure that no un-authorized and or unrecorded design modifications shall take place. If at any point in time, any change is desired in the mutually agreed design, Change control procedure shall be followed and documented.

To ensure the proper installation and commissioning of the equipment.


Description Specification
1. Equipment Description
Name Colloid Mill
Model CPM CM 3 WJ
Hooper Capacity 15 Liters
Particle Size Reduction 5-10 micron
Overall dimensions 1200 mm(H) X 410 mm(W) X 680 mm(L)
2. Main  Motor
Type TEFC, FLP, 3 Phase induction motor
Model Flange Mounted
Make Crompton Greaves
RPM 2850
Power Rating 3 HP /     / 415 V / 50Hz / 2.2 KW
3. Starter
Type SDS – 31403
Model Flange Mounted
Power Rating 3 HP / 415 V
Make PCG
START / STOP Switch 01 Nos. Each




Electrical connection To be provided


Hopper SS 316
Circulating pipe with Drain SS316
Lid(Hopper) SS316
Rotor SS316
Stator SS316


Description Drawing No.
General arrangement drawing of Colloid Mill  



Change in the agreed design shall be addressed through the well-defined Change control procedure.



cGMP current Good Manufacturing Practices
GEP Good Engineering Practices
MS Mild steel
NFLP Non-Flame Proof
SS Stainless Steel
KW Kilo Watt
DQ Design Qualification

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