A mine tailings pump must move the required volume through the actual pipeline while handling the slurry’s solids, density, and changing operating conditions. Selection therefore begins with tailings and system data, followed by a check of the proposed pump’s operating range, power, suction conditions, and wet-end materials. Nominal pump size alone cannot establish suitability.

Tailings duties vary. A transfer from a processing tank to a nearby thickener differs from a long pipeline to a storage facility; thickener underflow may behave differently from dilute tailings. This guide sets out the information needed to compare pump options and identify when the wider Tailings Slurry Pump Solutions system needs engineering review.

Define the tailings before selecting a pump

Request representative slurry data for normal operation and credible extremes. A single average concentration may conceal the condition that causes a pump to overload or a pipeline to settle.

At minimum, record:

• Solids concentration and whether it is by weight or by volume
• Slurry specific gravity or density, including its expected range
• Particle size distribution and maximum expected particle size
• Particle type, hardness, and shape where known
• pH, temperature, and relevant process chemicals
• Whether the slurry is dilute, thickened, or variable during operation

Concentration by weight and by volume are different measures. State which one a laboratory report uses. Slurry SG helps assess power demand, while particle size and type affect wear and pump suitability. Fine-rich or highly concentrated tailings may also require measured rheology rather than an assumption that they behave like water. The Hydraulic Institute identifies solids concentration, slurry SG, particle characteristics, and materials as relevant to slurry pump application. HI Data Tool

If the tailings properties change across ore blends or processing campaigns, give the supplier a range and identify which conditions occur together. Combining the highest value of every parameter without context can produce an unrealistic duty point; supplying only averages can overlook a genuine upset condition.

Define the transport system and operating flow

State the required normal, minimum, and maximum flow, plus the hours expected at each condition. Include the route from pump suction to discharge:

• Pipeline length, internal diameter, material, and profile
• Elevation change between the suction source and delivery point
• Bends, valves, branches, and major equipment losses
• Required pressure at the delivery point, if applicable
• Expected future pipeline extensions or changes in destination
• Existing instrumentation and operating controls

The required pump head includes the system’s static and frictional components. It changes with flow, which is why a single “required head” figure should be accompanied by the flow at which it applies. A pump’s actual operating point is established by its interaction with the system curve. HI Data Tool

For settling slurries, pipeline velocity must also be considered across the operating range. Excessively low velocity can allow solids to settle and obstruct the line; increasing velocity without evaluation can raise friction losses and wear. There is no universal safe velocity for every tailings slurry—it depends on the particles, concentration, pipe, and operating regime. The Hydraulic Institute notes the risk of settlement below an appropriate transport velocity. Pumps.org

Check the pump at more than one operating point

Ask for the proposed pump curve showing flow, head, efficiency, input power, and NPSH required at the stated speed and impeller diameter. Mark the expected operating points for normal and credible high- and low-flow cases. Confirm how the supplier has accounted for the actual slurry rather than reading a clear-water curve as a guaranteed slurry duty.

Review three questions together:

1. Can the pump meet the required flow and head across the expected operating range?
2. Can the driver handle absorbed power at the relevant slurry density and operating extremes?
3. Are suction conditions adequate for the proposed installation and duty?

Higher slurry SG can increase the power needed at a given flow and head. Head and discharge pressure should not be treated as interchangeable without considering fluid density. Pump curves also show why the selected driver and suction conditions need review alongside the nominal duty point. HI Data Tool

Where a pipeline requires substantial head, compare a suitable single-pump proposal with a properly engineered staged arrangement. The choice depends on the required duty, pressure limits, controls, maintenance access, and the system as a whole. The separate guide to single pump vs pumps in series can support that decision; this article focuses on the complete tailings selection brief.

Match wet-end materials to the actual wear mechanism

The impeller, liners, and throat bush are exposed to tailings flow and require material selection for the service. Do not choose a material based only on the phrase “abrasive tailings.”

Hard, angular or relatively coarse particles can create different wear demands from predominantly fine particles. Slurry chemistry, temperature, pump speed, and impact conditions also matter. A metal-lined option may be appropriate for one duty, while an elastomer-lined configuration may be considered for another. Confirm the proposed material and its operating limits for the specific pump and slurry; do not assume rubber or high-chrome alloy is always preferable. HI Data Tool

If replacing an existing pump, photograph worn parts and record where damage occurs. Localized wear near an inlet or joint can reveal an operating or assembly issue that a material change alone will not solve. If material comparison is the main question, see High Chrome vs Rubber vs Polyurethane Slurry Pump Parts.

Choose the arrangement around the installation

A horizontal slurry pump is often evaluated for a fixed tailings pipeline with accessible maintenance space. A vertical sump pump may suit a collection sump or local transfer point. The installation and duty should determine the arrangement: a vertical unit at a sump and a horizontal unit on a long discharge line solve different problems.

Check the suction source and operating liquid level. Confirm whether the pump will have flooded suction, how the sump feeds the inlet, and whether air entrainment or intermittent low levels are expected. Also review access for removing liners and impellers, lifting capacity, seal-water availability where required, standby equipment, and the planned maintenance interval.

The Mining Slurry Pump product range may help identify candidate configurations, but final selection requires the project duty and the relevant pump curves. Avoid assigning a specific model solely from this general guide.

Decision table: what changes the selection?

The table narrows the engineering questions; it is not a substitute for a duty-specific hydraulic calculation.

Illustrative selection brief

The following values are hypothetical and do not describe a supplied product or customer project.

A mine plans to transfer tailings at 350 m³/h through a 1.8 km pipeline with an elevation rise of approximately 22 m. Representative slurry SG is 1.35 at normal duty, with solids concentration reported as 35% by weight. The maximum expected particle size is 4 mm; pH is approximately 7.

These figures are not yet enough to select a pump. The pipe diameter, fittings, actual slurry behavior, flow variation, and suction conditions are still needed to calculate the system duty. The SG matters when reviewing absorbed power; the particle data informs passage and wear-material checks. If concentration rises during process upsets, both hydraulic behavior and power should be reviewed at that condition. The supplier should show the proposed operating point and its basis rather than simply matching 350 m³/h to a catalog capacity.

What to send for a tailings pump proposal

Provide a concise duty sheet containing:

• Required normal, minimum, and maximum flow
• Static elevation difference and pipeline route, length, diameter, and fittings
• Slurry SG or density range
• Solids concentration with its measurement basis
• Particle size distribution and maximum particle size
• Particle type, pH, temperature, and any relevant chemistry
• Suction arrangement and minimum operating liquid level
• Operating hours, control method, standby requirements, and expected changes
• Existing pump problems or wear records, if this is a replacement

Ask the supplier to identify the proposed pump and operating speed, duty points, impeller and liner materials, absorbed power and motor basis, suction requirements, seal arrangement, and assumptions requiring confirmation. Compare proposals on that shared duty sheet rather than comparing purchase prices for pumps selected to different assumptions.

FAQ

Can I select a tailings pump using flow rate and distance alone?

👉No. Distance does not define friction loss without pipe and slurry information. Elevation, fittings, flow, solids, and suction conditions also affect the selection.

Does higher slurry density always mean higher pump head?

👉No. Density and head are different quantities. Higher SG affects pressure and power relationships, while required head depends on the system and slurry behavior. Both need review at the operating duty. HI Data Tool

Is a rubber-lined pump suitable for all fine tailings?

👉No. Fine particle size is only one factor. Temperature, chemistry, head, speed, particle distribution, and the particular elastomer and pump design must also be checked.

When should pumps in series be considered?

👉Consider staging when the required system head cannot be met suitably by a single pump within the project’s operating and pressure constraints. Evaluate the whole pipeline, controls, and maintenance arrangement before choosing it.

What if tailings concentration changes during operation?

👉Provide normal and credible maximum conditions, their duration, and any measured rheology. Ask for the proposed pump and motor to be checked at those conditions, not only at the average concentration.

Request a duty-specific selection

For a project inquiry, send the flow range, pipeline profile, slurry SG, solids concentration and basis, particle size, pH, temperature, and suction conditions. Use the Tailings Slurry Pump Solutions page as the main route for discussing the complete transport duty; provide the same data when requesting a specific pump proposal.