Recyclingprocess-chamberfilterpress
The process water from process stage 3: fine particle separation first reaches an intermediate buffer. This contains an agitator to keep the mineral components ≤60 μm in suspension and thus prevent sedimentation.

This intermediate buffer serves as a feed tank for feeding the chamber filter press.

In the chamber filter press, the mineral components are filtered off and pressed into filter cakes. These filter cakes are then disposed of. The resulting filtered process water (filtrate) is discharged after analysis and release.

Quality criteria process water recycling
The quality of process water recycling is essentially determined by the following two criteria:

The quality criteria are achieved through the interaction of 3 factors:
Factor 1: Filter cloth composition
Factor 2: Precipitant/flocculant
Factor 3: Dosage/ concentration

For the correct design of these factors, extensive tests and preliminary trials are carried out during the project planning phase.

Overall process
The following diagram shows the overall process.

Process-Schema