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POWDER AND PARTICLE PROCESSING – Applications – Minerals – Mineral Powders

Coating of mineral powders

Contraplex pin mills are used to treat the surface of mineral fillers in the fineness range of d = 5 - 20 µm.
The products are then used, for example, in PVC pipes and to orient the PVC for use in the insulation of electric cables (energy savings during polymer production), etc.

photo 1 photo 2



The system we use to meter the coating agent is the most modern on the market. The fully automatic control unit ensures a continuous and uniform flow of stearin.

scheme 01

Legend:

1 = Feed silo
2 = Feed rating screw
3 = Spray container
4 = Melting container
5 = Contraplex Pin Mill CW
6 = Autom. revers-jet filter
7 = Fan
8 = Rotary valve
9 = Fine product silo
10 = Control cabinet

A = Feed product
B = End product


Once the finely dispersed coating agent and, for example, limestone, has been sprayed into the system via a special atomising bin, the coating process is carried out in the Contraplex pin mill.
Temperature control is all-important if thermal damage to the coating agent is to be prevented.

The mixing effect is beneficial to the process, and the end product is an optimally coated and deglomerated product.

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