Tips On How To Succeed At Pumping Slurry

When it comes to choosing slurry pumps Australia and using them to pump slurry, a lot of things should be considered to ensure the best service. Plants often handle slurries in a wide range of applications such as wastewater treatment and processing. Dealing with such mixtures of solids and liquids can pose a great challenge. Some elements in pumping slurry are the nature and size of the solids in the liquid and the abrasive wear they cause. Corrosiveness of the liquid is also a key element when it comes to pumping slurry.

Various sites rely on centrifugal slurry pumps for pumping slurry. These pumps need special provisions that need a detailed knowledge of the slurry properties to prevent corrosion, wear, erosion and other effects such as settling of the solids. It is important to specify the optimum combination of geometry, speed and materials. But in order to specify these factors, it requires balancing conflicting pump priorities and this demands consideration of maximum wear life, stable operation, operational flexibility and minimum consumption of energy.

Tailored pumps

When it comes to slurry services, horizontal centrifugal pumps are usually used although vertical pumps and other types of pumps can also be used for some specific applications. When it comes to centrifugal pumps handling slurries, these pumps have features that are tailored to the particular service that reflects the abrasive and corrosive nature of the solid concentrations and the nature of the slurry. These include the use of liners, choice of materials and different driver sizing.

The best slurry pumps should be able to provide an adequate service life. Corrosion and erosion effects of slurries are really challenging. Some solids in the mixture are usually larger than what the pump can handle in a lot of applications. It is therefore important to choose a pump that can pass them without any operational problems and damage.

As a result of such important requirements, slurry pumps are larger than clear fluid pumps. It generally sacrifices both maximum and minimum efficiencies over the whole range of operation, in exchange for the ability of the pump to achieve good operation in challenging services. Wear is a function of velocity and this means that slurry pumps should have slow speeds. Direct coupling between a low-speed electric motor and the pump makes more sense. A lot of other applications may favour gearboxes to meet the required duty point and the desired speed. In services that require variable flow of the fluid, variable frequency drives are typically used to provide continual speed changes.

Corrosion, wear and erosion

Some of the major factors that influence the wear of slurry pumps Australia include the concentration of solids, details of erosive particles, hydrodynamic properties of the flow, particle, and fluid velocity. An analysis of turbulent flow usually is not applicable for slurry pumps. This is mainly because the presence of solids will influence the turbulence parameters. The turbulence mechanisms become a complex problem, especially for dense slurries. When combined with the nature of the slurry flow, it can cause a chaotic situation. It is important to verify simple rules in experiments and theory. 

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