Flat Rolled Products

In ultrafiltration, as in microfiltration, basically macro-molecules and small particles as well as suspensions or emulsions are separated. The boundaries between the two processes are not sharp: Membranes in the area of a few µm to 0.1 µm are designated as microfiltration, membranes in the pore area of 0.1 – 0.01 µm are designated as ultrafiltration. The operating pressures are in the area from 0.5 to 10 bars in ultrafiltration.

The separation effect in ultrafiltration results for the most part from a sieving effect, i.e., particles are retained the particle size of which is larger than the average diameter of the membrane pores. In addition, solubility and diffusion effects play a role.

Depending on the application, different pore sizes are used.

The decisive technical innovation is in the coating and construction of the filter membranes. As a result, so-called “fouling”, the clogging of the filter membranes was able to be reduced by up to 50%.

As a result of reduced “fouling”, CRS is able to achieve higher feed security and more stable product quality.

Filtration Thought Leadership

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