The Heavy Duty Mining Slurry Hose Pump is an industrial positive displacement pump engineered specifically to transfer abrasive, high-density, and corrosive mining slurries without dynamic seals or valves in the fluid path.
Working Principle: A reinforced elastomeric hose is compressed sequentially inside a sealed steel housing by rotating shoes or rollers mounted on a rotor. The restitution of the compressed hose creates a strong vacuum that draws fluid in, while the mechanical squeeze pushes the media forward. Fluid contacts only the interior of the hose and the process connections.
Core Advantages:
• Zero dynamic mechanical seals eliminate gland water systems and seal flush failures.
• Reversible flow capability clears suction lines instantly.
• Dry-running capability prevents burnout during loss of prime.
• Isolation of fluid prevents internal metal-on-abrasive wear typical of centrifugal slurry pumps.
Typical Media: Copper/gold/iron ore rougher/cleaner flotation tailings, thickener underflow, heavy mineral sands, abrasive drilling muds, and highly viscous mineral slurries with up to 70% solids concentration by weight.
Typical Industries: Hard-rock underground and open-pit mining, mineral processing plants, metallurgical extraction, and heavy industrial waste management.
Technical Specifications & Selection Guide
Selecting a mining hose pump requires precise matching of volumetric displacement, solid particle limits, and chemical resistance. Use the engineering matrix below to determine the baseline model for your circuit.
|
Model Series |
Max. Flow Rate (m3/h) |
Max. Discharge Pressure (MPa) |
Hose Inner Diameter (mm) |
Max. Particle Size (mm) |
Motor Power Range (kW) |
|
MSP-25 |
2.5 |
1.6 |
25 |
4.5 |
1.5 - 3.0 |
|
MSP-50 |
12.0 |
1.6 |
50 |
9.0 |
7.5 - 11.0 |
|
MSP-80 |
35.0 |
1.5 |
80 |
15.0 |
22.0 - 30.0 |
|
MSP-100 |
75.0 |
1.2 |
100 |
20.0 |
45.0 - 55.0 |
|
MSP-125 |
120.0 |
1.0 |
125 |
25.0 |
75.0 - 90.0 |
Engineering Selection Parameters
Slurry Viscosity & Rheology: Non-Newtonian shear-thinning behavior must be factored into torque calculations.
Hose Compound Selection:
• NR (Natural Rubber): Superior resilience against sharp mineral fines and high abrasion resistance.
• NBR (Nitrile): Recommended for oil-bearing or hydrocarbon-contaminated tailings.
• EPDM / CSM: Specified for acidic chemical leaching circuits (pH 1-3).
Compression Cycle Frequency: Operating RPM must balance volumetric output against thermal fatigue limits of the elastomeric carcass.
Application & Process Integration
Pumps dense cementitious paste backfill into underground stopes at constant discharge pressures, maintaining uniform pipeline velocity to prevent sedimentation.
Handles high specific gravity (SG > 2.2) slurries directly from underflow cones without vapor-lock issues common in centrifugal setups.
Contains aggressive sulfuric acid leach sludges without chemical leaching of pump internals, removing the need for expensive exotic metal alloys.
Manufacturing & Quality Assurance
Reliability in heavy mining operations stems from strict metallurgical control and precise mechanical tolerances:
Casing Machining:
Heavy-gauge fabricated steel housings are CNC line-bored to maintain exact concentricity, ensuring uniform shoe-to-hose compression and extending hose fatigue life.
Rotor Assembly:
Dynamically balanced rotors constructed from forged alloy steel minimize vibration loads on heavy-duty bearings during continuous multi-shift operation.
Hose Manufacturing Process:
Multi-layer construction utilizing high-tensile nylon cord reinforcement embedded between inner and outer elastomeric layers, cured under precision steam-heat pressure to prevent delamination under cyclic stress.
Factory Testing:
Every pump undergoes a 4-hour dry and wet running test under rated pressure load, with vibration spectrum and current draw logged prior to export crating.
Frequently Asked Questions
Q: What is the typical service life of the pump hose in continuous copper tailings service?
A: Hose life depends heavily on solid sharpness, particle size, and operational discharge pressure. In standard copper rougher tailings duty (SG 1.6, particle size < 2 mm, operating at 0.8 MPa), our multi-ply reinforced NR hoses achieve an operational lifespan between 1,500 to 2,500 hours.
Q: Can this pump run dry if the upstream thickener underflow line blocks?
A: Yes. Because the fluid is fully contained within the elastomeric hose and no mechanical seals require flush water, the pump can run dry indefinitely without damaging internal components, sealing faces, or the drive motor.
Q: How does a hose pump handle large, irregular tramp particles in the slurry?
A: The pump tolerates solids up to 20% to 25% of the hose inner diameter, depending on compressibility. Soft or semi-compliant particles pass through the compression zone without cutting the inner lining. However, heavy tramp iron or jagged rocks exceeding particle limits should be captured upstream via magnetic separators or heavy-duty trash screens.
Q: What modifications are required to pump high-viscosity thickener underflow?
A: For high-viscosity or thixotropic slurries, select a lower gear ratio to reduce pump speed (RPM), and ensure the suction line is configured with a short, flooded intake layout or a negative-head feeder to prevent net positive suction head available (NPSHA) limitations.
Q: What documentation and certifications are provided with export shipments?
A: Each unit ships with complete factory quality dossiers including raw material mill test certificates (MTC) for steel housings, hydro-test reports, dynamic balancing records, ISO 9001 compliance certificates, and an English-language maintenance manual with part breakdown schematics.
Q: What is the procedure and estimated downtime for replacing a worn hose?
A: Hose replacement can be performed on-site by a two-man maintenance crew without removing the pump housing from its skid base. The procedure involves isolating process valves, draining the housing, removing the front cover plate, extracting the old hose, flushing the cavity, and sliding in the new pre-lubricated hose. Total downtime typically ranges from 1.5 to 3 hours depending on pump size.
Request a Technical Evaluation / RFQ
To provide an exact engineering proposal tailored to your slurry circuit, please submit the following parameters to our application engineering team:
• Media type, pH level, and solid specific gravity (SG)
• Percentage of solids by weight or volume
• Required flow rate (m3/h or GPM) and total discharge head (m or MPa)
• Suction condition (flooded suction vs. lift)
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