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A Beginner's Guide To Pumping Slurry

In case you've ever pumped slurry, you know that it will be probably the most difficult fluids to move. It's abrasive, thick, typically corrosive, and accommodates high amounts of solids. Little question about it, slurry is tough on pumps. However the more you understand about what you are pumping, the better your pump selection becomes, setting you up for longer imply time between failure.

WHAT IS A "SLURRY"?

Slurry is any mixture of fluid, like water, and a pulverized solid. Slurries are used as a convenient way to handle solids in bulk in mining, steel processing, foundries, energy generation, and most recently, the Frac Sand mining industry. Slurries generally behave the same way as thick, viscous fluids, flowing under gravity, but also pumped as needed.

Slurries are divided into basic classes: non-settling or settling. Non-settling slurries consist of very fine particles, which give the phantasm of elevated obvious viscosity. These slurries normally have low wearing properties, but do require very careful consideration when deciding on the best pump because they do not behave in the same method as a traditional liquid does.

Settling slurries are fashioned by coarse particles that are likely to form an unstable mixture. Particular consideration ought to be given to flow and energy calculations when deciding on a pump. The mainity of slurry applications are made up of coarse particles and because of this, have higher wear properties.

Choosing the proper pump for slurries is critical to get the most bang for your buck. Primary pump components, such as the impeller size and design, materials of building, and discharge configurations should be considered to make sure the pump will hold up towards the wear caused by an abrasive slurry. Slurry pumps are generally larger in measurement when compared to low-viscosity liquid pumps and normally require more horsepower to operate because they're less efficient. Bearings and shafts must be more rugged and rigid as well.

Many types of pumps are used for pumping slurries, but the most typical slurry pump is the centrifugal pump (pictured above). The centrifugal slurry pump uses the centrifugal force generated by a rotating impeller to impact kinetic energy to the slurry, similar to how a water-like liquid would move via a normal centrifugal pump.

f you could have expertise pumping slurries, you know it's not a simple task. Slurries are heavy and difficult to pump. They cause extreme wear on pumps and their elements and are known to clog suction and discharge lines if not moving fast enough. Most importantly, it’s a challenge to make slurry pumps last for a reasonable amount of time. But, there are just a few things you can do to extend the life of your slurry pump and make pumping slurry less of a challenge.

Discover the candy spot that permits the pump to run as gradual as doable (to reduce wear), however fast sufficient to keep solids from settling and clogging the lines

To reduce wear, decrease the pump’s discharge pressure to the bottom point possible

Comply with proper piping principles to make sure a continuing and uniform delivery of the slurry to the pump

Pumping slurries poses several challenges and problems, however with proper engineering and equipment selection you may experience a few years of fear-free operation. It is important to work with a qualified engineer when choosing a slurry pump because slurries can wreak havoc on a pump if not properly selected.

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