Peristaltic Pump for Mining: How SoloTech Handles Reagents, Slurries, and Abrasives Without Seal Failure
Reagent dosing in mining requires precise, repeatable delivery of fluids that may be abrasive, caustic, viscous, shear-sensitive, or hazardous. Graco SoloTech isolates the process fluid inside the hose and its barb fittings, removing the dynamic process shaft seal and wetted check valves that create recurring failure paths in other pump designs.
Why Use a Peristaltic Pump for Mining Reagent Dosing?
A peristaltic hose pump is a strong candidate when a mining duty requires low-to-moderate-flow metering or transfer of an abrasive, viscous, or shear-sensitive fluid. In the Graco SoloTech, the process fluid contacts the hose and barb fittings rather than the pump casing or roller. There is no dynamic process shaft seal and no wetted check valve to score, leak, or plug.
That architecture moves the planned wear point into one replaceable component: the hose. It does not make the pump maintenance-free, and it does not make every hose compatible with every reagent. It does remove several failure mechanisms that frequently drive downtime in abrasive slurry and difficult chemical metering service.
Graco describes SoloTech for industrial metering and transfer of caustic, abrasive, and sensitive fluids using a single-roller hose design.
Mining use is a LibertyCES engineering inference based on capability match, not a current Graco mining-specific application claim.
How the SoloTech Peristaltic Hose Pump Works
SoloTech uses one roller to compress an engineered hose through a full 360-degree rotation. As the roller advances, it closes the hose and pushes the trapped volume forward. The hose recovers behind the roller, creating suction that draws the next volume of fluid into the pump.
- The hose contains the process fluid. The pump casing and roller remain isolated from normal process contact; the hose and barb fittings form the wetted path.
- One compression occurs per revolution. The single-roller design reduces repeated compression events, friction, and heat compared with multi-roller arrangements.
- No dynamic process shaft seal is required. There is no rotating shaft passing through the wetted boundary, removing a common leak path.
- No wetted check valves control flow. Abrasive particles and slurry do not need to pass through ball checks or small valve ports on each stroke.
- Flow is reversible. Reversing the drive can support line clearing or controlled back-transfer when the full system design permits it.
Graco SoloTech Specifications for Mining Review
These values establish the campaign-level operating envelope. They do not replace model-specific curves, motor selection, chemical compatibility review, or confirmation of the complete wetted configuration.
| Specification | SoloTech Campaign Value | Mining Specification Meaning |
|---|---|---|
| Maximum fluid working pressure | 125 psi (0.9 MPa / 9 bar) | Confirm the exact model, hose, barb, fittings, discharge head, surge conditions, and relief strategy. |
| Maximum flow | Up to 17.7 gpm (67.0 L/min) on i/h32 | Best aligned with reagent dosing, pilot systems, and smaller transfer duties; not a default mainline slurry pump. |
| Published suction lift | Approximately 31 ft, wet and dry | Actual priming performance depends on speed, hose condition, viscosity, vapor pressure, elevation, and suction-line losses. |
| Maximum BLDC pump speed | 90 RPM | Variable-speed control supports metering and turndown, subject to the selected model and control package. |
| Hose materials | Natural Rubber, CSM, EPDM, NBR | Choose from verified chemical, temperature, abrasion, and flex-life data for the exact reagent and solids. |
| Maximum hose temperature | NR 160°F; CSM 250°F; EPDM 220°F; NBR 250°F | These are mechanical limits. The chemical and the most restricted wetted component may require a lower operating temperature. |
| Barb materials | Stainless Steel, PVDF, Hastelloy | Barbs are part of the wetted path and must be checked separately from the hose. |
| Motor options | AC gearmotors or BLDC with Graco Motor Control | Match supply voltage, control method, environment, speed range, and hazardous-area requirements. |
| Hazardous-location options | ATEX and explosion-proof configurations available on selected models | Certification is configuration-specific. Verify the exact motor, leak sensor, electrical classification, and installation code. |
| Environmental temperature | 14°F to 104°F (-10°C to 40°C) | Protect the pump from freezing, heat loading, weather, washdown, and environmental conditions outside the approved range. |
Specification values are manufacturer-published for the SoloTech family and remain model- and configuration-dependent. Verify the current Graco manual and selection data before purchase.
Where SoloTech Can Fit in Mineral Processing
The strongest SoloTech mining opportunities are duties that fit the pump's practical flow and pressure range while benefiting from an isolated fluid path, no wetted check valves, reversible flow, and variable-speed positive displacement.
Cyanide Solution Dosing
Cyanide solution is commonly maintained alkaline and is handled primarily for toxicity, containment, and dosing control rather than abrasiveness. SoloTech may fit low-to-moderate-flow dosing when the selected hose and barb materials are verified for the exact chemistry, concentration, temperature, and contaminants.
Lime Slurry Metering
Lime slurry combines alkaline chemistry with abrasive suspended solids and settling behavior. Eliminating wetted check valves can reduce plugging risk, while the hose becomes the controlled wear component. Percent solids, particle size, hardness, viscosity, and line velocity still govern the final fit.
Flocculant Addition
Activated polymers may be viscous and shear-sensitive. A peristaltic pump can provide positive displacement with comparatively gentle handling, but the required flow, polymer condition, tubing velocity, and allowable shear must be confirmed for the actual thickener process.
Xanthate and Frother Delivery
Collectors, frothers, depressants, and modifiers vary widely in chemistry and hazard. SoloTech can support controlled reagent delivery where the hose, barb, motor, and area classification match the specific formulation and operating environment.
Reagent Transfer
Transfer from bulk storage, totes, or day tanks can benefit from self-priming capability and reversible flow. Verify maximum transfer rate, suction lift, line length, viscosity, vapor pressure, and discharge restrictions before assuming the pump will meet the duty.
Small Slurry and Test Circuits
The 0.25-to-17.7 gpm family range can align naturally with pilot plants, reagent preparation systems, smaller slurry loops, and controlled batch transfer. High-volume thickener underflow and severe mainline slurry service require a different review.
Why a Peristaltic Pump Can Be the Better Fit Here
The right comparison is not which pump technology is universally best. It is which architecture satisfies the actual reagent duty with the fewest unmanaged failure modes.
| Pump Technology | Potential Failure Path in Reagent or Slurry Duty | Where SoloTech Changes the Mechanics |
|---|---|---|
| Centrifugal pump | Generally not the first choice for low-flow, high-turndown precision metering without additional control equipment. Abrasive solids can wear impellers, casings, and dynamic seals. | Positive displacement makes flow proportional to speed within the verified operating range, and there is no dynamic process shaft seal. |
| Diaphragm metering pump | Diaphragms and wetted check valves can wear, stick, or plug when solids are high, particles settle, or slurry accumulates in small valve passages. | SoloTech removes wetted inlet and outlet check valves; the hose provides displacement and becomes the primary planned wear component. |
| Gear pump | Close-clearance gears and bushings may be damaged by abrasive particles or jammed by solids outside the allowable size and hardness. | The process fluid moves through a flexible hose rather than through close-tolerance rotating gear clearances. |
| Peristaltic hose pump | Hose fatigue, incorrect material selection, excessive pressure, heat, poor lubrication, and unsuitable solids can shorten hose life or cause rupture. | The failure point is visible and maintainable, but it must be managed with correct hose selection, leak detection, pressure protection, and planned replacement. |
How to Verify SoloTech for a Mining Duty
Do not begin with hose color, connection size, or the pump already installed. Begin with the process and document both normal conditions and the worst credible operating condition.
- Define the fluid completely. Record the chemical or reagent, concentration, contaminants, pH, specific gravity, viscosity, temperature, solids percentage, particle size, hardness, shape, and settling behavior.
- Establish the hydraulic duty. Confirm minimum, normal, and maximum flow; total dynamic head; operating and surge pressure; suction lift or flooded suction; elevation; pipe size; and line length.
- Match the hose and barbs. Verify the selected hose compound and barb material against the exact chemistry, temperature, abrasion, flexing, and exposure time. Review every wetted fitting in the fluid path.
- Check the operating pattern. Define continuous, intermittent, batch, standby, or variable duty; required turndown; reversals; cleaning cycles; dry-run exposure; and daily operating hours.
- Verify power, control, and classification. Confirm AC or BLDC drive, supply voltage, variable-speed requirements, PLC/SCADA signals, washdown environment, and any ATEX or other hazardous-location requirement.
- Plan containment and maintenance. Include pressure relief, leak detection, drainage, hose-change access, spare hose strategy, inspection interval, and a response plan for hose failure.
- Confirm the model with current manufacturer data. Review the current Graco manual, configuration, performance curve, motor limits, materials, certifications, and written application approval before purchase.
Send the real service conditions before you buy the pump.
LibertyCES will review the fluid, solids, hydraulics, hose and barb materials, motor, controls, and operating environment to determine whether SoloTech belongs in the duty or whether another pump technology is the safer specification.
Use the Mining Pump Selection GuideContinue the Mining Pump Selection Path
SoloTech Product Authority Page
Review the complete SoloTech family, flow range, materials, motor configurations, and application limits.
View SoloTech specifications /manufacturers/gracoGraco Industrial Pump Hub
Compare SoloTech peristaltic and QUANTM electric diaphragm pump families for different mining failure modes.
Explore Graco industrial pumps /industries/mining/reagent-dosing-slurry-transferReagent Dosing & Slurry Transfer
Map cyanide, lime, flocculant, and flotation reagent duties to the actual chemistry, solids, and metering requirement.
Open the mining application guide /mining-pump-solutionsMining Pump Solutions Hub
Compare peristaltic, electric double-diaphragm, and magnetic-drive technologies across mining duties.
Compare mining pump technologiesPeristaltic Pump for Mining FAQs
Does only the hose contact the fluid in a SoloTech pump?
The hose isolates the fluid from the casing and roller, but the complete wetted path also includes the hose barb fittings and any connected process fittings. Hose and barb materials must both be verified for the chemical, concentration, temperature, pressure, solids, and duty cycle.
Can SoloTech pump abrasive mining slurry?
SoloTech can be a plausible fit for selected abrasive slurry and reagent duties within its practical flow, pressure, particle, and material limits. It should not be treated as a default mainline slurry pump for high-volume thickener underflow, large particles, or severe abrasion without specialist and manufacturer review.
What mining reagents can a peristaltic pump handle?
Potential duties include cyanide solution dosing, lime slurry metering, flocculant addition, flotation chemical delivery, and bulk-to-process reagent transfer. The application name is not an approval. The exact formulation, concentration, temperature, contaminants, and hose/barb materials must be verified.
What is the maximum flow and pressure for Graco SoloTech?
The SoloTech family is published up to 17.7 gpm on the i/h32 model and up to 125 psi maximum fluid working pressure. The allowable operating point remains model-, speed-, hose-, motor-, and application-dependent.
Are ATEX SoloTech configurations available?
Selected SoloTech motor and accessory configurations are available with ATEX or other hazardous-location ratings. Certification is not universal across the family. Confirm the exact motor, leak sensor, electrical classification, ambient conditions, and installation requirements.
How does SoloTech compare with a diaphragm metering pump?
A diaphragm metering pump can be an excellent choice for many clean chemical duties. In high-solids service, however, its wetted check valves and smaller passages may wear or plug. SoloTech removes wetted check valves and contains the fluid in the hose, but introduces planned hose wear that must be managed.
Is SoloTech officially marketed by Graco as a mining pump?
Graco currently presents SoloTech for water treatment and general industrial metering and transfer of caustic, abrasive, or sensitive fluids. The mining applications on this page are capability-based engineering inferences by LibertyCES and require project-specific verification.
Do Not Force the Wrong Pump Into the Duty.
SoloTech can eliminate the dynamic process shaft seal and wetted check valves that fail in difficult reagent and slurry service. It can also be the wrong pump when flow, particles, pressure, temperature, or service conditions exceed the practical envelope.
Send James Riggins the actual process data. LibertyCES will help determine whether peristaltic, electric diaphragm, magnetic-drive, or another pump category deserves the next review.