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Abrasive Slurry Pump: Flowrox LPP-T

A leading producer of aircrete in Northern Europe and the UK was looking for an abrasive slurry pump. Previously used and tested conventional hose and centrifugal pumps proved unsuccessful resulting in high maintenance costs, reduced maintenance intervals and frequent bin repair. Flowrox transfer pump LPP-T65 was successful in the heavy-duty process and selected for the task.

Application: Cement industry, Autoclaved Aerated Concrete (AAC)

Challenge: Conventional hose pump and centrifugal pumps could not handle the abrasive medium resulting in high maintenance costs

Solution: 1 Flowrox LPP-T65 peristaltic pump, 1 Flowrox LPP-T40 peristaltic pump

Results: Reduced maintenance intervals, reduced maintenance costs

Flowrox Abrasive Slurry Pump Saves Time & Money

Flowrox LPP-T65 pump proved to be a robust workhorse more than able to handle the demanding and abrasive slurry that the aircrete producer is handling.

The key raw materials of Autoclaved Areated Concrete (AAC) are
lime and quartz sand. Together with furnace slurry, the raw materials of AAC are fed to a ball mill prior to being mixed together in reactors. From these reactors the abrasive slurry mixture is then pumped to a storage tank for further processing.

 

transfer-pump-Concrete-pumping-Flowrox

Process flowsheet: Flowrox LPP-T65 pump in Autoclaved Areated Concrete (AAC) pumping

 

Pumping the abrasive slurry is a demanding task. Previously used and tested conventional hose and centrifugal pumps proved unsuccessful resulting in high maintenance costs, reduced maintenance intervals and frequent bin repair. Therefore the previously used pump was replaced with LPP-T65, abrasive slurry pump.

Process conditions:

  • Specific Gravity: 1.3 – 1.6
  • Solids Content: 30 %
  • Temperature: 40 – 60°C
  • Medium: Abrasive

Flowrox LPP-T65 pump normally operates in this application from 20 to 22 hours per day with a pumping speed of 36 rpm and a flow rate of 11.5. m³/h at 3 bar pressure. The LPP-T65 pump is equipped with a 5.5 kW motor and a hose leak detector.

Another Pump for Mineral Saw Dust

Following successful test results and positive experience with the LPP-T65 pump, the customer decided to get another LPP pump (LPP-T40). They decided to replace the existing conventional hose pump with Flowrox abrasive slurry pump for their mineral saw dust slurry pumping.

In this part of the process, the aicrete elements are cut to the final dimension in a wire-cutting platform. The resulting scrap material drops to a mix tank below where the scrap particles are wetted, turned into a slurry and pumped back to a 27 meter high storage tank.

Operated with an inverter, the LPP-T40 pump is controlled with a level switch in the mix tank. The LPP-T40 empties this 3.5 m² tank during the sawing process. The specific gravity of the saw dust slurry is between 1.3 – 1.6 and the process requires a flow of 4.5 m³/h.

 

Key benefits

Handles abrasive slurry transfer

Capability to pump 24/7

Extended service intervals

Lower maintenance costs

testing
NOTE: Flowrox pump and valve businesses sold to Neles
NOTE: Flowrox pump and valve businesses sold to Neles