Slurry Pump Selection
If you have ever pumped slurry, you know it is one of the most challenging fluids to move. It is abrasive, viscous, sometimes corrosive, and contains a lot of solids. There is no doubt that the slurry is very difficult for the pump. But the more you know about what you are pumping, the better your pump selection becomes, setting a you up for longer mean time between failure.
Choosing the right pump for the slurry is the key to maximum benefit. The basic components of the pump, such as the size and design of the impeller, structural materials and discharge structure, must be considered to ensure that the pump can resist the wear caused by the abrasive slurry. Compared with low-viscosity liquid pumps, slurry pumps are generally larger in size and usually require more horsepower to operate because of their lower efficiency. Bearings and shafts must also be stronger and more rigid.
The following are the common characteristics of slurry:
Does it contain a lot of solids
Usually resolved quickly
Need more power than "water pump" to run
Slurry pump considerations
If you have experience in pumping slurry, you know that this is not an easy job. The slurry is heavy and difficult to pump. They can cause excessive wear of the pump and its components, and if the movement speed is not fast enough, they can block the suction and discharge pipes. Most importantly, it is a challenge to make the slurry pump last for a reasonable time. However, there are things you can do to extend the life of your slurry pump and make pumping slurry less challenging.
Find the best operating point to make the pump run as slow as possible (to reduce wear), but fast enough to prevent solids from settling and clogging the lines
In order to reduce wear, the exhaust pressure of the pump should be reduced as much as possible to the lowest
Follow proper piping principles to ensure that the slurry is delivered to the pump consistently and evenly
Pumping slurry brings some challenges and problems, but with the right engineering and equipment selection, you can experience years of worry-free operation. When choosing a slurry pump, it is important to work with a qualified engineer, because if not selected correctly, the slurry may cause serious damage to the pump.
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