Mass finishing

Process Liquid Separation

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A question that faces many mass finishing and wet or vapour blast machine users, as well as those using machining centres and pre-painting wash plants is how do I separate process liquids and solids from each other?


Process liquid separation and recirculation provide opportunities to save, be environmentally responsible and be more economic.



Coolants, the sludge from paint booths, the process water from industrial surface cleaning operations, or the process water from the treatment of glass and ceramic materials – whenever it comes to the cleaning/recycling of industrial liquids, the proven centrifugal filtering technology offers numerous economic and technical benefits.


Powerful centrifugal filters are available with 2 or 3-phased separation ports and can be used for a wide range of different cleaning tasks, but they must also be economical. For example, a 3-phased centrifuge also allows the separation of liquids with different densities such as the removal of unwanted oil from coolants.


To see a film of a 3-phase centrifuge please click here:




For more information on your process water issue click here


Process Water Recycling Systems


For environmental and economic reasons, process water recirculation is now the preferred water treatment method for industrial applications.


The principle of the 2-phased separation (solid/liquid phased) by centrifugal force is the foundation of modern process water cleaning system.


3-phased centrifuges are for liquid/liquid/solid separation processes. Proven process technology combined with highly efficient treatment systems, opens up a far wider range of applications.


Semi-automatic centrifuges for 2-phased separation (solid/liquid phased)


Built for easy “plug-and-play” installation and offers an excellent separation performance. It generates such a high centrifugal force that even very small and light particles are safely removed from the liquid. The sludge is collected in a polymer basket that can hold 22 kg (48 lbs) and is inserted into the rotary drum. For removal of the sludge this “basket” is simply taken out of the drum. (The waste sludge consistency and texture described here can be likened to that of a “potters clay”)


3-phased separation (solid/liquid1/liquid2)


Besides the separation of solids from the liquid phase, the 3-phased centrifuge also allows the separation of liquids with different densities, for example the removal of unwanted oil from coolants. The process liquid contaminated with oil and solid particles is fed into the centrifuge at a constant flow rate. Because of the different densities of the three “phases” (solid/liquid1/liquid2) the solids and the two liquids are separated from each other. For removal from the rotary drum the two separated liquids are caught by two dedicated collecting tubes which transport them to their respective destinations.


For corrosive liquids, extremes of pH levels, and those with a high salt content, stainless steel versions made from either 316 or 320 material are necessary.


Well designed centrifuge distinguish themselves through their high performance and their rugged and maintenance-friendly design. For example, a key feature of the centrifuge is the indirect drive of the rotary drum by V-belt allowing the installation of heavy-duty drum bearings.




Arrange to send a sample of your process water for evaluation


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