Ceramic Slurry

Do You Want to Increase Your Service Life When Pumping Ceramic Slurry?

How to pump abrasive, viscous ceramic slurry reliably and efficiently

Do you work in the ceramics industry and use a progressing cavity pump to fill and transfer fireclay and ceramic slurry? In this case, you are certainly also struggling with the problem of low service life, high maintenance costs and unplanned downtimes.

NETZSCH Pumps & Systems, the global specialist in handling complex media, has the solution for increasing your service life and thus sustainably reducing costs. We show you how to improve the service life of ceramic slurry pumping sixfold by changing the pump.

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Ceramic Slurry, NETZSCH, Pumps, Systems

Are you tired of changing your ceramic slurry pump every three months?

The several shaping methods in ceramic manufacturing can be divided into pressing, plastic shaping and casting. In ceramic slurry casting, an aqueous suspension is poured into a porous form that extracts liquid. In this way, a solid layer is formed, the so-called slip. Initially, slip and fireclay are stored in storage tanks. Due to the viscous and abrasive medium, a ceramics manufacturer used a progressing cavity pump for filling and pumping over fireclay and ceramic slip for a long time. Although progressing cavity pumps are ideally suited for pumping mineral suspensions such as plaster, mortar or concrete primer, the pump could not cope with the slurry and fireclay, causing the ceramic manufacturer annoyance. Also, the company had to replace the rotor and stator of the progressing cavity pump every three months. In addition, the shaft sealing had to be changed every six to eight months. This led to high maintenance and servicing costs.

Challenges to consider when pumping ceramic slurry

Reasons for the high wear of the ceramic slurry pumps can be found in the properties of the medium. For example, the composition of the ceramic slurry can change over time, especially if it is stored for a more extended period. This leads to variations in the flow properties of the slurry and significantly affects your pump performance. Another challenge of fireclay and ceramic slurry is its high abrasiveness. The medium acts like sandpaper on the rotor and stator. The resulting high wear of the pump components shortens the service life and increases your maintenance effort. In addition, ceramic slurry has a higher viscosity compared to other fluids. This leads to difficulties when pumping, especially if the pump is designed for less viscous liquids. It is essential to select a pump suitable for handling viscous materials. As a partner for pumping complex media, NETZSCH and the ceramics manufacturer found the solution optimally adapted to the unique properties.


cubic metres per hour can be pumped

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The compact TORNADO® T.Envi® rotary lobe pumps are optimally adapted to your individual requirements.

With this ceramic slurry pump, you can increase your service life sixfold

The choice fell on a TORNADO® T.Proc® rotary lobe pump. The T.Proc® is specially designed for high robustness and long service life with minimal wear. With this rotary lobe pump, you can pump even highly abrasive material mixtures such as fireclay and ceramic slurry without any problems. The innovative combination of operating principles and particular material pairing developed by NETZSCH makes this possible. While other pump manufacturers usually have elastomer lobes rotating in a metal housing and thus subject to high dynamic loads, rotary lobes made of a particularly robust, hardened steel are used here. In addition, the pump interior is lined with an easily replaceable rubber liner. Thus, wear is significantly reduced. The rotary lobe pump also offers you substantially higher efficiency. Therefore, you can increase your service life sixfold when pumping ceramic slurry or other abrasive media - and reduce your costs simultaneously. The protective housing insert made of acrylonitrile butadiene rubber (NBR) can be easily removed separately and replaced cheaply.

In addition, the TORNADO® T.Proc® has a double-sided toothed belt drive which replaces the synchronous gearbox usually used in rotary lobe pumps. Due to its complex design, this gearbox is prone to malfunctions and defects. The double-sided toothed belt not only serves to transmit power from the motor to the shafts but also synchronises the rotation of the lobes simultaneously. This dual function offers the major advantage of greatly simplifying the drive design overall, increasing operational reliability and simultaneously saving installation space. Combined with the motor flanged above the pump chamber, this results in one of the most compact pumps on the market.

What are you waiting for? Replace your old ceramic slurry pump and increase your production efficiency sustainably. Our experts will work with you to find the best solution for your application.

TORNADO® T.Proc® rotary lobe pump

  • Medium: Medium: Ceramic slurry and fireclay
  • Pressure: 4 to 5 bar
  • Flow rate: 15 to 25 m3/h
TORNADO® T.Proc® Rotary Lobe Pump, NETZSCH, Pumps, Systems