A colloid mill is a piece of equipment designed for grinding of substances to colloidally sized particles. Liquid medium is required for high quality.
The first colloid mill example was constructed by K. Plausson in 1920. Since then, the milling machine has been much developed, and is actively used in pharmaceutical, chemical and food industries nowadays. The tremendous advantage of a colloid mill is its ability to disperse and homogenize the product. Due to these properties and the high grinding fineness (particles up to 1 micron can be obtained), the colloid mill is used as the main component of plants designed for production of bitumen emulsions.
During production of bitumen emulsion, hot bitumen (90-100ºС) and emulsifier solution are supplied into the milling machine.
As noted above, the colloid mill is a wet milling devices, which means that mixed solid and liquid components can be sent into the mill.
As soon as the product enters the mill, homogenization and dispersion occur: the solid phase is ground and evenly distributed in the liquid phase, emulsifying into a stable product. The required fineness of bitumen particles is achieved by the design of the cutting head of the mill as well as the surface geometry of the rotor for higher cavitation effects.
Advantages of colloid mills produced by GlobeCore:
- modern design;
- availability of heating (cooling) jacket;
- adjustability of grinding gap (milling fineness) without dismantling the unit from the production line;
- fineness of grinding up to 1 micron;
- ensures stability of bitumen emulsion from breaking;
- high effectiveness and mixing rate.