Technical Specifications
| Parameter | Specification |
|---|---|
| Pump Type | Horizontal Triplex Single-Acting Piston / Plunger Pump |
| Power Range | 500 HP – 1,600 HP (373 kW – 1,193 kW) |
| Max Discharge Pressure | Up to 5,000 PSI (34.5 MPa) with appropriate fluid end |
| Max Flow Rate | Up to 1,470 GPM (5,560 L/min) – de-rated for high-density slurries |
| Max Slurry Density | Up to 2.4 SG (75% solids by weight, depending on particle size) |
| Max Particle Size | Up to 3/4″ (19 mm) – standard; larger with custom fluid end |
| Plunger/Liner Sizes | 4.0″ – 6.5″ (102 mm – 165 mm), interchangeable |
| Suction & Discharge | 12″ suction / 5″ discharge, API 7K flanged |
| Frame Construction | Heavy-duty steel skid (single or dual-skid), epoxy coated |
| Drive Options | Diesel engine (with clutch/transmission) OR AC electric motor (VFD ready) |
| Fluid End Material | Hardened steel, 17-4PH SS, or rubber-lined carbon steel |
| Seal Type | Chevron packing (std) / Mechanical seal (opt) / Lantern ring flush |
| Ambient Temp Range | -25°C to +50°C |
| Certifications | API 7K, API Q1, ISO 9001:2015 |
| Optional Extras | Remote telemetry panel, automated lubrication system, sound-attenuating enclosure |
Key Applications
Tailings Pipeline Transport
From thickener underflow to final tailings storage facility, our skid-mounted pumps deliver reliable push over long distances (up to several kilometers) with minimal pressure loss. Their positive displacement nature means no flow reversal during shutdowns—a major risk with centrifugal pumps in high-head tailings lines.
Underground Paste Backfill
Modern mines use cemented paste backfill (CPB) to stabilize stopes. Our pumps handle high-density paste (70–75% solids) containing binder, delivering consistent stope fill without segregation or pipe plugging. The skid design fits through standard decline drifts for underground installation.
Mineral Processing Plant Transfer
Move cyclone underflow, flotation tailings, or thickener underflow between process stages. The ability to run dry briefly (with proper seal flush) protects against upstream feed interruptions.
Slurry Pond Management & Relocation
When legacy tailings ponds need reclamation or relocation, our portable units provide a cost-effective alternative to fixed pumping stations. Deploy one unit to multiple pond cells over time, saving capital expenditure.
Industrial Sludge & Chemical Waste
Outside mining, these same pumps excel at pumping abrasive industrial sludges—fly ash slurry, red mud from alumina refining, phosphogypsum slurry, even dredged harbor sediments.
Why Choose SJ Petroleum Machinery?
Built by a Sinopec Subsidiary
As a wholly-owned subsidiary of Sinopec Oilfield Equipment Corporation, SJ Petroleum Machinery inherits decades of high-pressure fluid handling expertise originally developed for the world’s deepest oil and gas wells. That same engineering rigor now serves the mining industry.
API Monogram & Global Compliance
We hold API 7K (pumps), 4F (rigs), 8C (hoisting), and ISO 9001. Every pressure-containing component is serialized and hydrostatically tested. You receive full material traceability and test reports—critical for mining operations with strict safety cases.
Tailings-Specific Engineering Resources
Unlike general-purpose pump suppliers, we employ slurry transport engineers who model your pipeline layout—vertical lift, horizontal distance, number of bends, and particle settling velocity—to propose the correct pump configuration. No guesswork.
Global Spare Parts Network
We maintain regional warehouses and can ship critical wear parts (liners, valves, packing) via air freight within 72 hours to most mining destinations. Many stock items are kept in Dubai, Houston, and Shanghai.
Customization Without Chaos
Need stainless steel for acidic tailings? Ceramic plungers for ultra-abrasive slurries? A nitrogen-charged pulsation dampener to protect downstream piping? We build exactly what your site requires. Standard options are many; custom work is welcome.
Proven in the Field
Hundreds of SJ mud pumps are currently moving tailings in Chile’s copper mines, Australia’s iron ore operations, South Africa’s platinum tailings, and China’s vast coal slurry pipelines. Field data shows typical liner life exceeding 2,000 hours in moderately abrasive service.
Frequently Asked Questions (FAQ)
Q1: What’s the maximum solids concentration these pumps can handle?
In standard trim, we reliably pump slurries up to 70–75% solids by weight (specific gravity ~2.2–2.4) depending on particle size distribution. For extreme cases like thickened tailings or paste fill, we recommend a custom-engineered fluid end with oversize valves and hardened flow passages.
Q2: How do these compare to centrifugal pumps for tailings?
Centrifugal pumps lose efficiency dramatically as slurry density or viscosity increases. They also suffer from NPSH problems and internal recirculation wear. Our positive-displacement mud pumps maintain near-constant volumetric efficiency, self-prime, and handle entrained air/gas much better—though they have lower peak flow rates per dollar. For high-head, medium-flow, high-density tailings, a mud pump is often the correct choice.
Q3: What is the typical lifespan of wear parts?
With properly selected materials and typical tailings (quartz sand, 50–60% solids), expect:
-
Liners: 1,500 – 2,500 hours
-
Valves & seats: 800 – 1,500 hours
-
Packing: 300 – 600 hours
These numbers vary widely with slurry abrasivity. We can provide life estimates from our application database.
Q4: Can I run the pump dry for short periods?
Brief dry running (30–60 seconds) is acceptable with proper packing or mechanical seal flush. For longer dry operation, install a suction tank with level control or a dry-run protection sensor (available as an option).
Q5: Is the skid weatherproof enough for outdoor tailings storage facilities?
Yes. Standard units have a weather-resistant epoxy coating and IP54-rated controls. For severe environments (coastal, high rainfall, extreme dust), we offer an optional walk-in enclosure with forced ventilation and space heaters.
Q6: Do you provide on-site commissioning and training?
Absolutely. We send a field service engineer to supervise installation, startup, and initial operation. On-site training for your maintenance crew covers liner/valve replacement, packing adjustment, and troubleshooting.
Q7: What’s your warranty?
18 months from shipment or 12 months from commissioning, whichever occurs first. We keep critical replacement parts in stock for warranty claims.
Q8: Can I get a pump with explosion-proof electrics for underground use?
Yes. We offer ATEX, IECEx, or GB3836 certified explosion-proof motors and control panels for underground mines or hazardous areas.
