Login

Your Name:(required)

Your Password:(required)

Join Us

Your Name:(required)

Your Email:(required)

Your Message :

0/2000

Your Position: Home - Agriculture - A Beginner's Guide To Pumping Slurry

A Beginner's Guide To Pumping Slurry

A Beginner's Guide To Pumping Slurry

Centrifugal Pumps for Slurry

Slurry is one of the most challenging fluids to move. It's highly abrasive, thick, sometimes corrosive, and contains a high concentration of solids. No doubt about it, slurry is tough on pumps. But selecting the right centrifugal pump for these abrasive applications can make all the difference in the long-term performance.

If you are looking for more details, kindly visit our website.

WHAT IS A "SLURRY"?

Slurry is any mixture of fluid and fine solid particles. Examples of slurries would include: manure, cement, starch, or coal suspended in water. Slurries are used as a convenient way to handle solids in mining, steel processing, foundries, power 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 two general categories: non-settling or settling. 

Non-settling slurries consist of very fine particles, which give the illusion of increased apparent viscosity. These slurries usually have low wearing properties, but do require very careful consideration when selecting the right pump because they do not behave in the same manner as a normal liquid does.

Settling slurries are formed by coarse particles that tend to form an unstable mixture. Particular attention should be given to flow and power calculations when selecting a pump. The majority of slurry applications are made up of coarse particles and because of this, have higher wear properties.

Below are common characteristics of slurries:

  • Abrasive
  • Thick consistency
  • Can contain a high amount of solids
  • Usually settle quickly
  • Require more power to operate than a “water” pump

SLURRY PUMP SELECTION

Many types of pumps are used for pumping slurries, but the most common slurry pump is the centrifugal pump. 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 through a standard centrifugal pump.  

Slurry applications greatly reduce the expected wear life of pumping components. It’s critical that pumps designed for these heavy-duty applications are selected from the start. Consider the following when making selections:

BASIC PUMP COMPONENTS

To ensure the pump will hold up against abrasive wear, the impeller size/design, material of construction, and discharge configurations must be properly selected. 

Open impellers are the most common on slurry pumps because they’re the least likely to clog. Closed impellers on the other hand are the most likely to clog and the most difficult to clean if they clog.

Slurry impellers are large and thick. This helps them operate longer in harsh slurry mixtures. 

SLURRY PUMP CONSTRUCTION

Slurry pumps are generally larger in size when compared to low-viscosity liquid pumps and usually require more horsepower to operate because they're less efficient. Bearings and shafts must be more rugged and rigid as well. 

To protect the pump’s casing from abrasion, slurry pumps are oftentimes lined with metal or rubber. Goulds Pumps, for example, lines their XHD (Extra Heavy Duty) slurry pump with rubber.

Metal casings are composed of hard alloys. These casings are built to withstand the erosion caused by increased pressure and circulation. 

The casings are selected to suit the needs of the application. For instance, pumps used in cement production handle fine particles at low pressures. Therefore, a light construction casing is acceptable. If the pump is handling rocks, the pump casing and impeller will need a thicker and stronger casing. 

SLURRY PUMPING CONSIDERATIONS

Those with experience pumping slurries know it's not an easy task. Slurries are heavy and difficult to pump. They cause excessive wear on pumps, their components, and are known to clog suction and discharge lines if not moving fast enough. 

It’s a challenge to make slurry centrifugal pumps last for a reasonable amount of time. But, there are a few things you can do to extend the life of your slurry pump and make pumping slurry less of a challenge.

  • Find the sweet spot that allows the pump to run as slow as possible (to reduce wear), but fast enough to keep solids from settling and clogging the lines
  • To reduce wear, lower the pump’s discharge pressure to the lowest point possible
  • Follow proper piping principles to ensure a constant and uniform delivery of the slurry to the pump

Pumping slurries poses several challenges and problems, but with proper engineering and equipment selection, you can experience many years of worry-free operation. It's important to work with a qualified engineer when selecting a slurry pump because slurries can wreak havoc on a pump if not properly selected.

Check out the Must-Have Handbook for Centrifugal Pumps for more information on centrifugal pumps, including details about pumps specifically designed for slurry applications! 

Expert Centrifugal Pump Insights from Crane Engineering

Engineers and experts rely on Crane Engineering for insight and help with centrifugal pumps to pump slurry.  Our in-house team of engineers can answer questions related to not only pumps but valves and skid systems. We provide a complete service and repair team who will fix pumps back to OEM standards. We are ready to assist you, contact us, today if you're in Wisconsin, Minnesota, Iowa, North Dakota, South Dakota, and the Upper Peninsula of Michigan. Crane Engineering also builds and designs customized skid systems nationwide. 

Let us know how we can help you, request a quote today!

How to Select the Best Slurry Pump

As an industry leader in pump manufacturing, the in-house team at GATOR Pump, Inc. produces high-quality trailer pumps, hydraulic pumps, vertical pumps, floating pumps, and more. We specialize in customized, efficient, and affordable pump solutions for effectively transporting water, slurries, sludge, and other various heavy solids in the most difficult and remote operating locations. 

Our high-performance GATOR Trailer PTO Pump is well-known throughout the industry for its rugged design and simple maintenance requirements. Our centrifugal pumps are considered among the most reliable and durable products available on the market today, and we are committed to producing high-quality equipment that is built to last: our team stands behind each of our pumps, and service after the sale is our hallmark.

GATOR Pump offers slurry pumps, also known as sludge pumps, for high solids-handling performance with the rapid deployment and portability you need to get the job done. Learn more about the types of slurry, what to consider when selecting a slurry pump, and the myriad of slurry pump applications across industries.

What Is Slurry?

The slurry is composed of solids suspended within a liquid. This fluid will have viscosities ranging from thin to thick in substance, with varying temperatures and sizes of suspended particles. Unlike pure water, transporting slurries can lead to corrosion and abrasion within pumping equipment.

There is a virtually limitless number of substances that are considered slurries. Some slurries are intentional, like foods, paints, and cement. Other slurries need to be managed accordingly, like pond muck or wastewater. 

Common varieties of slurries include:

  • Soil slurry.

    This slurry is a mixture of mud, clay, dirt, sand, silt, rock, and other soil particles in water, which effectively moves the soil media.

  • Coal slurry.

    Coal slurry is a byproduct of burning coal for energy production. It is a toxic mix, typically composed of water and coal fly ash.

  • Slurry oil.

    This refinery fluid byproduct is generated through fluid catalytic cracking (FCC) units, which contribute to a small portion of the international supply of fuel oil.

  • Pulp slurry.

    Pulp slurry has applications in paper production. It is derived from a mixture of solvents and various wood pulps.

  • Manure slurry.

    Made up of organic matter and animal waste, manure slurry is useful as fertilizer in agricultural settings. This is achieved by aging and concentrating the manure and organic material in a slurry pit.

  • Wastewater.

    Water that humans have already used and contaminated is considered a slurry. This typically pertains to sewage wastewater.

  • Sewage sludge.

    This is a semi-solid slurry that is a byproduct of the treatment of sewage wastewater.

    You will get efficient and thoughtful service from SHANGLISHI.

    Recommended article:
    What is the cost of flue gas Desulfurization system?
  • Food processing slurry.
    The Benefits of Using lost foam casting process
    Growing Strawberries Indoors in Greenhouses

    There are numerous liquified processed foods with a solid base that are considered slurries, such as peanut butter, soups, gelatins, condiments, liquid chocolates, and more.

Considerations When Choosing a Slurry Pump

(Click to Enlarge)

As there are many varieties of slurries, there are many sludge pump types available. Choosing the wrong pump for your application can lead to a decrease in suction effectiveness at best, as well as equipment damage, system downtime, and costly repairs or replacement parts. To make the right slurry pump selection for your specific application, consider five key variables:

Design

Many slurries are corrosive and abrasive. In these cases, it is important to select a pump that has a durable impeller or, alternatively, a rotor. Slurries also tend to have particles of varying sizes and densities. For slurries in which larger solids might be present, you want to select a pump design that won’t clog easily.

The GATOR Sludge Pump is designed with a modification for an in-line slurry valve that facilitates media pumping and handling by utilizing discharge flow to agitate and thin the fluid. After slurry processing, the valve closes, and the sludge removal pump transports the material to the designated discharge point.

Materials

A slurry pump’s material construction will directly impact its effectiveness and longevity. For abrasive slurries that have a neutral pH level, Hi-Chrome is the preferred material for its high Brinell hardness. 

For slurries that are abrasive but have an acidic pH, duplex stainless steel is recommended. This material also maintains a high Brinell level for optimally handling corrosive materials.

Deployment Technique

A slurry pump’s method of deployment is an important consideration when developing its setup. GATOR Pump is a submersible pump and, as the name implies, submersible pumps completely submerge in a liquid. As the pump is submerged, it does not require priming and there are no suction lines or check valves.

Power & Size

A slurry pump’s application will decide its appropriate power needs and the resulting size. To offer optimal longevity while still effectively pumping abrasive liquids, the ideal operational speed for slurry pumps is typically between 900 and 1,200 RPM. Working at slower speeds avoids the wear similar to sandblasting that occurs when the RPM rate exceeds that range.

What Industries Use Slurry Pumps?

 

Slurry pumps have applications in an array of diverse industries.

Irrigation & Agriculture

Our portable sludge pumps are ideal and convenient in agriculture for pumping large amounts of water out of a ditch, canal, stream, or pond. Our pumps don’t require priming, suction lines, or check valves, just submersion in water. Beyond crop irrigation and water transfer, example applications include:

  • Weed and water-grass management

  • Animal waste removal

  • Sediment removal during pond cleaning

Mining & Construction

Mining and construction sites often require continuous flow, and pumps for these industries need the capability to withstand abrasive and corrosive media while effectively maintaining operations. Our pumps are specifically designed to handle these tough slurries in applications like:

  • Storm deluge and emergency flood pumping

  • Gravel and sand quarry dewatering

  • Settling pond containment and water transfer

Wetland & Waterfowl Management

Proper land conservation efforts rely on dependable slurry pumps to transfer water and adequately protect wildlife habitats and wetlands. Our pumps can reach such remote areas, and we’ve worked with both government agencies and conservation organizations to help manage environmental conditions through:

  • Flooding wildlife habitats for fishing and hunting purposes

  • Mitigating storm surge

  • Dewatering for seasonal habitat preparation

Flood Control Drainage

For residential, business, industrial, or agricultural flooding, deploying dependable flood pumps in a timely manner is crucial. Flood water tends to carry suspended solids, and so slurry pumps will provide the best results. Our flood control and drainage pumps are applicable for:

  • Wildlife and fish refuge management

  • Sewage bypass and stormwater removal

  • Emergency response pumping in remote areas

Sludge, Slurry, & Manure Waste Handling

When it comes to pumping manure or other potentially dangerous slurries, certain regulations must be followed. Our pumps are designed to meet the standards set for numerous environments. Our sludge water, slurry, and manure pumps are capable of:

  • Transfer pumping for sewage plants

  • Manure lagoon management

  • Handling landfill leachate

Oil Fields, Refining, & Energy

Slurries are abundant in the petroleum industry, some of which are quite abrasive and thick. Many energy applications demand consistent and continuous flow, and our pumps are capable of this in applications such as:

  • Drill mud handling

  • Oilfield water and mud injection

  • Refinery fire suppression

Partner With GATOR Pump For Your Slurry Pump Needs

Looking for a high-performance slurry pump? GATOR Pump offers efficient, high-quality pumps you can depend on, with capabilities for customizing our products and manufacturing in-house to meet your unique needs. A veteran-owned business since 1977, our company focuses on providing reliable, long-lasting, and cost-effective solutions for a system you can trust. 

For questions about our slurry pumps, contact us by using our online form, giving our team a call at 1-800-735-9811, or sending us an email. For custom solutions, request a quote to begin your project.

For more ceramic slurry pumpinformation, please contact us. We will provide professional answers.

113

0

Comments

0/2000

All Comments (0)

Guest Posts

If you are interested in sending in a Guest Blogger Submission,welcome to write for us!

Your Name (required)

Your Email (required)

Subject

Your Message (required)

0/2000