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Colloid Mill

COLLOID MILL is suitable for homogenising emulsifying dispersing, mixing, comminuting of liquids to highly viscous products. It is based on rotor – stator principle, It is available in plain as well as water jacketed in both STD & GMP models.

A colloid mill is a machine that is used to reduce the particle size of a solid in suspension in a liquid, or to reduce the droplet size of a liquid suspended in another liquid. This is done by applying high levels of hydraulic shear to the process liquid. It is frequently used to increase the stability of suspensions and emulsions. The colloid mill is used for various applications such as Superfine grinding, homogenizing, emulsifying, dispersing, mixing and extracting of liquids, ointments and highly viscous products in pharmaceutical, cosmetics, suspensions & emulsion industry.

The product is fed to the hopper which leads the product into the gap between rotor and stator. The product is subjected to a high degree of shearing, cutting and rubbing between two metal toothed surfaces of rotor and stator and towards the discharge section. The processed product continuously leaves the mill through drain pipe if required, it can be re-circulated by three way cock and re-circulating pipe assembly.

  • All contact parts are made out of S.S. 304 (S.S. 316 on demand at extra cost). No castings are used to avoid contamination problems
  • Coupling provided between motor shaft and rotor shaft for ease in maintenance.
  • Three leak proof neoprene sealing device between the motor and the processing chamber to prevent liquid going in the motor winding.
  • Modified design of semi concave teeth in rotor and stator reduces motor h.p. and gives better performance in size reduction without damaging the products.
  • bearing housing specially designed to facilitate fine metal contact of rotor and stator. This unique design provides smooth and consistence all around performance and long life of rotor and stator.
  • Three way cock system for draining and recirculation of the liquids provided as standard. Extra discharge sprout provided as a standard for viscous products.
  • DOL starter with overload relay for protection against single phasing and low voltage.
  • Contact parts can be easily dismantled for cleaning.
  • Special design facilitates adjustments of the grinding gap by exterior screw by means of handle even during operation.
  • Flame proof motor and Flame Proof rotary switch can be provided on request at extra cost.

Product is feed to the operating area of a rotor, having a speed of 3000 R.P.M by specially designed feed device. The product is processed by high sheer, pressure and friction between the stator and rotor , the angular gap becomes narrower towards the discharges section. This processed product continuously leaves the mill through the drain pipe, if required, it can be recirculated.

Optional Features :
  • Horizontal / Vertical Drive.
  • Water cooling system.
  • Flame Proof Electrical.
Safety Features :
  • Overload pressure release mechanism.
MODEL Output – Liter / Hour Drive type Option Rotor Speed- RPM Hopper Capacity- Liter Seal Type Partial Size Reduction- Micron Electric Motor HP/ KW
CM – 250 CM-1000 Vertical OR Horizontal 2800 15 Rubber Silicon 5 to 10 3 / 2.25
CM -500 150 to 2500 Vertical OR Horizontal 2800 15 Rubber Silicon 5 to 10 5 / 3.75
CM-1000 250 to 5000 Vertical OR Horizontal 2800 25 Mechanical 5 to 10 10 / 7.5