Mining Pump

Mining Duty Pneumatic Diaphragm Pump

A pneumatic diaphragm pump is a new type of conveying equipment, and one of the most innovative pump types on the market today. Using compressed air as a safe power source, it transfers corrosive liquids, liquids with large solid particles, high-viscosity fluids, and volatile, flammable or toxic media — with no electric motor or shaft seal in contact with the product. BSK mining pumps are built for the harsh, hazardous environment of mine sites and carry the MA mining-product safety certification required for use in underground coal and metal mines.

BSK offers three frame sizes for mining duty — 1½”, 2″ and 3″ — covering 378 to 903 L/min, with cast iron, stainless steel, aluminum alloy or PP/PVDF wetted parts. Abrasive slurry passes straight through without straining or clogging, and the gentle diaphragm action does not shear or degrade the slurry. The pump is run-dry safe, self-priming from a dry suction line, and can be submerged in sumps and pits.

Typical Mining Applications

• Draining working face and gallery / tunnel dewatering
• Guniting for gallery wall and backfill slurry
• Mill discharge and cyclone feed
• Tailings and thickener underflow transfer
• Sump, pit and shaft dewatering
• Filter press feed and flotation reagent / acid / cyanide leach solution dosing

Air Motor Advantages

BSK mining pumps use a professional air-distribution (air champ) design that cuts air consumption and running cost, with a modular air motor for easy field maintenance:

• Corrosion resistance — surface coating on wetted and external parts for the damp, acidic mine environment
• Low noise — exhaust chamber with integrated muffler keeps operation at ~75 dB @70 psi
• Leak-tight — resistance sealing and groove-seal structure with bolt clamping give good air stability and minimal leakage
• Wear resistant — ceramic-material chip valve and hardened air components for long service life
• Less air, less cost — optimized air chamber design for lower air consumption per litre pumped
• Common module — modular structure means fewer spare parts and lower inventory cost

Performance Specifications

BSK mining duty series, available in cast iron, stainless steel, aluminum alloy and PP/PVDF, with diaphragm, ball and seat materials selected for your slurry. Working air pressure 0.10–0.83 MPa.

Figure 1 — BQG mining pump parameters and service kit

Performance Curves

Flow rate vs. discharge head at three air-consumption settings (10/20/30, 25/50/70 and 25/50/90 L/s). Curves let you read the duty point for filter press feed, long-distance pipeline and high-head transfer.

Figure 2 — BQG 220/0.1 performance curve

Figure 3 — BQG 410/0.1 performance curve

Figure 4 — BQG 490/0.1 performance curve

High-Pressure Duty — 2:1 Series for Filter Press Feed

For filter press feed, long-distance slurry pipelines and high-head transfer, the BSK 2:1 high-pressure series doubles the outlet pressure of the air supply — up to 1.4 MPa liquid outlet pressure — in 1″, 1½”, 2″ and 3″ sizes, with aluminum, cast iron, stainless steel or PP/PVDF wetted parts.

Key Characteristics

Security. Air-motor driven — no electric spark; low heat generation during operation, suitable for flammable atmospheres; handles muddy water; capable of dry running. Safe for gassy and wet underground sections.

Reliability. Classic air-distribution system; strong, well-sealed structure with high suction lift — built for continuous duty in abrasive slurry.

Efficiency. Modular air-motor structure for fast on-site maintenance; low air consumption per litre pumped keeps running cost down.

Portability. Among the lightest in the AODD industry for its size, with a lifting cage for easy movement between working faces and galleries.

Figure 5 — BSK mining pump advantages, solution and characteristics

Matching Mining Pump Accessories

To complete the suction and discharge line, BSK supplies a matching accessory range for the BQG mining pump series:

• Perforated suction strainers — protect the pump from oversized debris and tramp material while letting slurry through at full flow; supplied in sizes to match each pump connection.
• Threaded pipe couplings and sleeves — for fast, leak-tight joining of suction and discharge pipework in the gallery.
• Flange adapters — connect the pump ports to standard bolted pipework without extra fabrication.

Accessories are supplied in coated carbon steel or stainless steel to suit the wetted duty. Tell us your connection size and pipe standard, and we will match the set to your pump order.

Figure 6 — Mining pump suction strainers, couplings and flange adapters

Pneumatic Pump Controller

The BSK pneumatic pump controller is a single air-management unit that regulates, filters and monitors the compressed-air supply to the pump — holding flow steady and protecting the air motor from wet, dirty mine air.

• Air pressure regulator with locking knob for a repeatable flow setting
• Pressure gauge for an at-a-glance readout of line pressure
• Transparent filter bowl that traps condensate and particles before the air motor
• High (H) and Low (L) ports for air line and signal connections
• Wall or pump mounting on the supplied L-brackets, complete with brass air valve, coiled air line and quick-connect fittings

Figure 7 — BSK pneumatic pump controller kit

Figure 8 — Controller box: regulator knob, pressure gauge, H/L ports and filter bowl

Mounted directly on the pump or on adjacent pipework, the controller keeps the air motor running on clean, dry air — extending diaphragm and air-valve life in wet, dusty conditions.

Figure 9 — Controller mounted on a BQG mining pump

Diaphragm Selection

+ Excellent  √ Good  ! Fair  X Poor

For abrasive slurry duty, pair a wear-resistant diaphragm (Santoprene or Hytrel) with the correct ball and seat material; use PTFE where chemical compatibility with acids, cyanide or flotation reagents comes first. Temperature limits above apply to the diaphragm material, not to the whole pump.

Sizing a Mining Pump

To select the right size and wetted materials, tell us: slurry specific gravity and solids content, maximum particle size, required flow rate, discharge head and pipeline length, and the reagent chemistry involved. Our engineers will recommend the model and confirm air consumption. Send your duty conditions through the contact form or reach us on WhatsApp — samples of the slurry are welcome and can be tested.

Read more: Using AODD Pumps for Mining & Mineral Processing — a practical selection guide.