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What’s in your slurry? When it comes to choosing the right slurry pump for your application, you have a few options to choose from. Learn more about slurry pump types, what materials suit each pump best, and how to find the right type.
Slurry types
In theory, any solid can be hydrotransported. However, particle size and shape can be limiting factors depending whether they can fit through pump passages without causing blockages. Within the broader “slurry” category are four slurry classifications that determine how to best choose appropriate slurry pumps.
Class 1: Mildly Abrasive
Class 2: Slightly Abrasive
Class 3: Significantly More Abrasive
Class 4: Highly Abrasive
It may be no surprise Oil Sands pumps are ideal for moving highly abrasive class-four slurries. Because slurry pumps are made specifically to hydrotransport large-particle solids, they also ensure better wear performance in harsh conditions. But there’s more to choosing a pump than knowing the type of slurry it will move.
Four centrifugal slurry pump types
While centrifugal slurry pumps are well-known for their use in the Oil Sands, many have additional applications.
- Hydrotransport — Hydrotransport pumps cover a wide range of applications because moving slurry is hydrotransport. These slurry pumps are best used with water-based solutions and are often used in dredging.
- Tailings Transfer — Tailings Transfer pumps are best suited for transporting tailings, or the finer abrasive particles that result from hard rock mining, like mud and ore particles, as well as associated chemicals used in the mining process. Pending specific applications, LSA, LCC, and MDX pumps from GIW are all useful for tailings transfer.
- Cyclone Feed — Like tailings pumps, cyclone feed pumps are also used in hard rock mining and are similar to hydrotransport pumps as they’re applicable to dredging operations. In the cyclone feed market, these pumps are used in all stages of scalping or separating solids by particle size. GIW’s LSA and MDX slurry pumps are widely used for cyclone feed applications, depending on the required size range.
- Flotation Froth — Transporting froth using a slurry pump is a unique application in that the air contained in froth can negatively impact pump performance. This also means it’s difficult to predict pump performance life for these applications. Due to these factors, oversized High-Volume Froth (HVF) pumps, which remove air from froth, are necessary for froth applications.
Choosing the right pumps for specific slurries can help pump owners avoid unnecessary maintenance, repairs, and related downtime. In addition, proper pump applications make for safer work environments, offering those working on or around pumps peace of mind. Perhaps best of all, purpose-chosen slurry pumps also have longer wear lives, boosting owners’ bottom lines.
Still don’t know which pump type is right for your application? Those with unique slurry pumping requirements need not fear. Based on data from over 3,000 centrifugal slurry pumps, GIW’s proprietary pump selection program called SLYSEL can help prospective pump owners get what they need down to their exact specifications. Plus, SLYSEL can help pump operators ensure they’re operating pumps correctly — from properly calculating performance curves and pipe friction loss to evaluating other operational factors and pumps themselves — reducing room for error and maintaining pump longevity.
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Ready to choose your next slurry pump? Learn how by downloading the presentation “ How to Choose the Best Slurry Pump for My Application .”
Slurries are specialised compounds found in various processing industries, combining both solids and liquids’ properties. Various industries classify slurries depending on how aggressive they are. Some may be more aggressive than others, which is why it’s essential to choose the right pump in transporting them.
Meanwhile, a slurry pump is a kind of centrifugal pump that increases the energy of a solid-liquid mixed medium under the centrifugal force, converting the electric energy into kinetic energy and potential energy of the medium. There are various types of slurry pumps available in the market. But which among those types are best for your needs?
Horizontal Slurry Pump
A horizontal slurry pump has its shaft parallel to the horizontal plane, hence its name. It is a single-stage, single-suction axial suction, cantilever horizontal centrifugal pump with a high-strength and wear-resistant materials for the overflow parts. The horizontal slurry pump is most suitable for conveying strong abrasion, high concentration, corrosive significanceand fine particle slurry. It’s often used in metallurgy, mining, electrical power, coal mine and other industries to transport abrasive slurries.
Vertical Slurry Pump
Unlike the horizontal slurry pump, the vertical slurry pump is often used in slurry pools. The pump head should be submerged below the liquid—also why it’s called a submerged slurry pump. However, not all vertical slurry pumps are submerged underwater. It depends on the motor and the non-pump head compartments. It’s often used in conveying corrosive, coarse particles and high concentration slurry.
Submerged Slurry Pump
The Submerged Slurry Pump is a vertical single-stage single-suction cantilever centrifugal pump, and the impeller is a semi-open impeller. A mixing blade is arranged at the suction edge extension of the impeller. Its main selling point is the length of its pump shaft in the submerged part, reaching 800 to 2000 millimetres. It is mainly used in municipal engineering, paper mills, cement plants, printing and dyeing plants.
Submersible Slurry Pump
Last on the list is the submersible slurry pump. It is the coaxial integration of the pump and the motor. Its main selling point is there is no need to build complex fixtures and protective measures on the ground. It can be quickly submerged into the slurry and allow to do its job. Since a mechanical seal protects the motor, it prevents high-pressure water and impurities from entering the motor cavity. The submersible pump is most suitable for conveying slurry containing abrasive particles, such as sand, cinder and tailings.
How To Select the Right Slurry Pump
Selecting the correct type of slurry pump should be based on four factors: performance, material conveyed, sealing type and transmission mode. However, it can also depend on other factors, such as on-site working conditions and the acidity or alkalinity of the slurry.
It’s crucial to know about all these things to ensure that the chosen pump works along with its limits, providing superb performance and work satisfaction. There are four types of pumps for a reason—there are varied slurry types.
Conclusion
Selecting and operating a slurry pump can all vary based on various factors that play on-site. It’s a complex task due to how difficult it is to balance the pumps available in the market. However, try to consider the flow, pressure, viscosity, abrasiveness, particle size and particle type of the slurry you’re dealing with. If you need more help, an applications engineer should help you consider these factors to help you navigate for the best pump for the project.
Egger Pumps UK is a family-owned Swiss organisation that believes in sustainability. We make machines and systems to help our clients extend asset life and decrease the atmospheric impact. If you’re looking for cantilever pumps for a specific project, you can scroll through our online shop to see our on-stock pumps.
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