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A Newbie's Guide To Pumping Slurry

If you happen to've ever pumped slurry, you know that it may be one of the vital difficult fluids to move. It is abrasive, thick, generally corrosive, and comprises high quantities of solids. Little doubt about it, slurry is hard on pumps. However the more you understand about what you're pumping, the better your pump choice becomes, setting you up for longer imply time between failure.

WHAT IS A "SLURRY"?

Slurry is any combination of fluid, like water, and a pulverized solid. Slurries are used as a handy way to handle solids in bulk in mining, steel processing, foundries, power generation, and most not too long ago, the Frac Sand mining industry. Slurries typically behave the same way as thick, viscous fluids, flowing under gravity, but additionally pumped as needed.

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

Settling slurries are shaped by coarse particles that are likely to form an unstable mixture. Particular attention must be given to flow and power 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 fitting pump for slurries is critical to get the most bang for your buck. Basic pump components, such as the impeller dimension and design, materials of construction, and discharge configurations must be considered to ensure the pump will hold up against the wear caused by an abrasive slurry. Slurry pumps are generally bigger in measurement when compared to low-viscosity liquid pumps and usually require more horsepower to operate because they're less efficient. Bearings and shafts have to be more rugged and inflexible as well.

Many types of pumps are used for pumping slurries, however the most typical slurry pump is the centrifugal pump (pictured above). The centrifugal slurry pump makes use of the centrifugal force generated by a rotating impeller to impact kinetic energy to the slurry, just like how a water-like liquid would move by means of a regular centrifugal pump.

f you might have experience pumping slurries, you know it's not a straightforward task. Slurries are heavy and difficult to pump. They cause excessive wear on pumps and their components and are known to clog suction and discharge lines if not moving fast enough. Most importantly, it’s a challenge to make slurry pumps final for a reasonable quantity of time. But, there are just a few things you are able to do to increase the lifetime of your slurry pump and make pumping slurry less of a challenge.

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

To reduce wear, lower the pump’s discharge pressure to the lowest level potential

Observe proper piping rules to make sure a continuing and uniform delivery of the slurry to the pump

Pumping slurries poses a number of challenges and problems, but with proper engineering and equipment choice you may experience a few years of worry-free operation. It's necessary to work with a certified engineer when selecting a slurry pump because slurries can wreak havoc on a pump if not properly selected.

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