Colloid mill
A colloid mill is used to finely break up solids suspended in one liquid or to reduce the particle size of one suspension of one liquid in another, i.e. to generate a colloid .
Colloid mills are based on the rotor / stator principle. The rotor rotates at a speed of 3000 to 6000 revolutions / minute. The strong hydraulic pressures generated in the grinding chamber as well as impact and cutting effects break up the grist and distribute it in the suspension liquid. An adjustable gap width between rotor and stator is used to determine the maximum particle size.
Colloid mills have wide industrial uses
- Pharmaceutical industry: e.g. B. Manufacture of ointments and pastes
- Cosmetic industry: creams, lipstick compounds, nail polish, hand gels
- Paint and varnish production: emulsion paints, various color pigments
- Soap industry: homogenizing detergents
- Plastics industry: various dispersions and emulsions
- Textile industry: printing inks, impregnating agents
- Grease industry
- Paper industry: paper color and glue
- Food industry: homogenization of ice creams, cream in milk, production of sauces, mayonnaises, pastes and masses of various kinds
Individual evidence
- ↑ Hermann Plauson: The colloid mill and its possible applications. In: Angewandte Chemie. No. 34, 1921, pp. 469-472.