Froth Slurry Pump Manufacturers – Heavy-duty | Centrifugal
Built for frothy, air-entrained slurries, the EDDY Froth Pump features a fully open design that minimizes air locking and maintains continuous flow in demanding applications. Engineered to handle high-solids, abrasive slurry, and viscous mixtures with minimal clogging and low maintenance, it is available in flooded-suction, submersible, and self-priming configurations to meet diverse site requirements. Ideal for flotation, mining, wastewater, and industrial slurry service where consistent performance and reliability are essential.
Key Features / Advantages
- A fully open rotor design allows air, gas, and froth to move freely through the pump, preventing air entrapment and flow loss under highly aerated slurry conditions.
- Maintains stable, continuous pumping performance even under fluctuating froth density and variable air content.
- Purpose-built for flotation froth and air-entrained slurry transfer, where conventional centrifugal pumps struggle to maintain prime.
- High solids-handling capability supports abrasive, viscous, and irregularly shaped particle mixtures commonly encountered in froth-pumping applications.
- Operates effectively at high percent solids, reducing the need for excess water addition and improving overall process efficiency.
- Non-clogging hydraulic profile minimizes blockages caused by unstable froth, fibrous material, or debris in the slurry stream.
- Lower operating speeds reduce wear on internal components, extending service life in abrasive froth environments.
- Supports flooded-suction, vertical, and horizontal installation to accommodate varying plant layouts and process constraints.
- Simplified internal geometry improves service access, shortens maintenance cycles, and reduces overall downtime.
Gallery
Froth Slurry Pump
Froth Pump Technical Specifications
Performance Specifications
- Flow Range: 1 – 7300 GPM
- Head Range: Up to 350 ft
- Solids Handling: Up to 11 inches
- Percent Solids: 40–70%
- Production Rate: 0 – 600 yd³/hr
Physical Specifications
- Discharge Size: 1 inch to 12 inches
- Suction Size: 1.5 inch to 14 inches
- Pump Orientation: Configurable for flooded suction, vertical, or horizontal installation depending on application
Material Construction
- Rotor: High Chrome 28%, Ductile Iron, Stainless Steel, Duplex Stainless
- Volute Casing: High Chrome 28%, Ductile Iron, Stainless Steel, Duplex Stainless
- Shaft: High-strength alloy steel or Stainless Steel
- Mechanical Seal: Heavy-duty seal arrangement designed for abrasive, air-entrained slurry service
- Bearing Housing: Ductile Iron or Stainless Steel
Froth Pump Comparison Table
| Model | Discharge Size | Suction Size | Flow Range (GPM) | Head Range (ft) | Solids Handling | % Solids by Weight | Production Rate (yd³/hr) | PDF  | PDF  |
|---|---|---|---|---|---|---|---|---|---|
| HD-1000 | 1 inch | 1.5 inch | 1 – 200 | Up to 170 | Up to 0.75 inch | 40–70% | 0–15 | ENG  | |
| HD-2000 | 2 inch | 3 inch | 50 – 390 | Up to 90 | Up to 1.75 inches | 40–70% | 15–45 | ENG | ESP |
| HH-2000 | 2 inch | 3 inch | 100 – 600 | Up to 350 | Up to 1.75 inches | 40–70% | 25–60 | ENG | |
| HD-3000 | 3 inch | 4 inch | 100 – 780 | Up to 130 | Up to 2 inches | 40–70% | 45–75 | ENG | ESP |
| HD-4000 | 4 inch | 6 inch | 250 – 1200 | Up to 160 | Up to 3 inches | 40–70% | 75–150 | ENG | ESP |
| HD-5000 (5x5) | 5 inch | 5 inch | 400 – 1800 | Up to 225 | Up to 4 inches | 40–70% | 100–175 | ENG | |
| HD-5000 (5x6) | 5 inch | 6 inch | 400 – 1800 | Up to 225 | Up to 4 inches | 40–70% | 100–175 | ENG | |
| HD-6000 | 6 inch | 8 inch | 450 – 2500 | Up to 200 | Up to 5 inches | 40–70% | 150–200 | ENG | ESP |
| HD-8000 | 8 inch | 10 inch | 1400 – 3600 | Up to 230 | Up to 7 inches | 40–70% | 250–300 | ENG | ESP |
| HD-10000 | 10 inch | 12 inch | 1600 – 5000 | Up to 240 | Up to 9 inches | 40–70% | 300–350 | ENG | ESP |
| HD-12000 | 12 inch | 14 inch | 2600 – 7300 | Up to 180 | Up to 11 inches | 40–70% | 500–600 | ENG | ESP |
Industries Served
Mining and Mineral Processing
Froth pumps are essential in flotation circuits where mineral-laden froth must be transferred without collapse or flow interruption. These systems move highly aerated slurries from flotation cells to recovery stages while maintaining stability across wide density swings, helping preserve separation efficiency and overall plant throughput.
Wastewater and Industrial Treatment
Treatment plants often encounter scum layers, aerated sludge, and foamy waste streams containing trapped air and suspended solids. Froth pumps handle these unstable mixtures without losing prime, enabling consistent removal of surface waste, thickened byproducts, and chemically treated effluent.
Chemical Processing
Foam and gas entrainment are common byproducts of chemical reactions, mixing, and separation processes. Froth pumps provide controlled movement of these mixtures through the system, preventing vapor lock and ensuring reliable transfer between reactors, separators, and holding tanks.
Paper and Pulp Manufacturing
Pulp streams often contain entrained air, fibers, and foam, which disrupt conventional pump performance. Froth pumps move these materials without clogging or surging, maintaining a steady flow in stock preparation, screening, and waste-handling areas.
Food and Beverage Byproduct Handling
Foamy residues, aerated waste, and process byproducts require dependable transfer without stalling or breakdown. Froth pumps gently and consistently handle these mixtures, supporting stable flow and handling in cleanup, recovery, and waste systems.
Recycling and Resource Recovery
Many separation systems rely on froth-based processes to isolate plastics, metals, and reusable materials. Froth pumps transport aerated slurry between stages while handling mixed solids and air-laden flow, helping maintain separation accuracy and system continuity.
Flotation Circuit Recovery Upgrade at a Copper Mine
Case Study
The Problem
A mid-scale copper mine running a multi-stage flotation circuit struggles to move mineral-rich froth from its flotation cells to downstream recovery equipment. Conventional centrifugal pumps repeatedly lose prime when air content spikes, leading to surging flow, vapor lock, and intermittent shutdowns. Operators must manually intervene to restore flow, and production is often slowed during peak aeration periods to avoid disrupting the rest of the circuit. These disruptions reduce recovery efficiency and create unpredictable daily output.
The Solution
The operation replaces its existing transfer pumps with an EDDY Pump’s Froth Pump, designed specifically for air-entrained slurry. Installed in a flooded suction configuration at the flotation cell discharge, the pump’s fully open rotor allows highly aerated froth to pass without air binding or flow collapse. The system maintains continuous froth movement despite wide swings in density, solids content, and air volume, integrating directly into the existing circuit without process redesign.
The Result
Froth transfer becomes stable and predictable across all operating conditions. Surging and unplanned stoppages are eliminated, and concentrate feed to downstream equipment remains consistent. Separation efficiency improves, recovery rates increase, and operators no longer need to manage pump failures during high aeration cycles. The plant sustains higher throughput with fewer interruptions, achieving measurable gains in production reliability and flotation performance.
Call for sales or support
If you need assistance with pump selection, sales or engineering support, call 619-404-1916.
Questions? Talk to an Engineer
Frequently Asked Questions
What makes a froth pump different from a standard slurry pump?
A froth pump is designed to handle air-entrained, foamy slurries that can cause conventional centrifugal pumps to lose prime. Its open rotor and non-clogging hydraulic profile allow air, gas, and solids to pass without vapor lock, maintaining continuous flow in flotation and froth recovery processes.
Can this pump handle highly aerated slurry without losing flow?
Yes. The pump is engineered specifically for high-air-content mixtures. It maintains stable flow even as air volume fluctuates, preventing surging and interruptions that are common with standard slurry pumps.
What industries typically use froth slurry pumps?
Froth pumps are widely used in mining and mineral processing, wastewater treatment, chemical processing, pulp and paper, recycling, and industrial byproduct handling, where foam, gas, or aerated slurry is present.
How does the pump perform with abrasive solids?
The pump is built to handle high solids content and abrasive material. It operates effectively at 40-70% solids and passes large particles without clogging, making it suitable for harsh flotation and recovery environments.
Does froth pumping require additional water dilution?
No. The pump is designed to move froth at high solids concentrations, reducing the need for dilution water. This improves process efficiency and helps maintain consistent slurry characteristics throughout the system.
What installation configurations are available?
The froth pump can be installed in flooded suction, vertical, or horizontal configurations. This flexibility allows it to integrate into existing plant layouts without major structural changes.
How does this pump reduce downtime?
Its non-clogging design and ability to handle air-entrained flow prevent common failure modes such as air binding and loss of prime. This reduces manual intervention, unplanned shutdowns, and frequent maintenance.
Is this pump suitable for continuous operation?
Yes. It is built for continuous duty in demanding industrial environments. Lower operating speeds reduce wear, extending component life and supporting long-term, uninterrupted operation.
What size range is available?
Models range from small 1-inch units for localized froth transfer to large 12-inch systems capable of moving thousands of gallons per minute. This allows the pump to scale from pilot systems to full plant operations.
Can the pump integrate into an existing flotation circuit?
Yes. The pump is designed to drop into existing circuits with minimal modification. It stabilizes froth transfer without requiring changes to flotation cells, piping layouts, or downstream recovery equipment.
HD (Heavy Duty) Slurry Pumps / Dredge Equipment
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