Pumping a suspension of bentonite at high pressure into boreholes during mining and tunneling operations is commonly used for stabilization and cooling. Holes from 6 to 20 inches in diameter (150 – 500 mm) are initially sustained with bentonite slurry. In loose soils, bentonite solidifies and maintains the integrity of the borehole wall. When drilling into hard stone soils, bentonite serves as a coolant medium for the drill head.
A manufacturer of drilling equipment was using outdated piston pumps that required frequent maintenance because they had difficulty handling abrasive particles in the bentonite suspension. The company considered replacing the piston pumps with newer models but chose the Hydra-Cell D10/G10 instead.
With its seal-less design and check valve orientation, Hydra- Cell has no difficulty handling abrasives in bentonite slurry. In addition to reduced maintenance, the Hydra-Cell D10/G10 pumps are self-priming, have a small footprint, and provide a consistent flow rate. As a bonus, the hydraulic motors for the pumps are driven by power from the tunneling machines.
Pump Model: D10XKCTHFEYA
Flow Rate: 1.3 to 8 gpm (5 to 30 l/min)
Discharge Pressure: 725 to 1000 psi (50 to 69 bar)
Application: Pumping bentonite for borehole
Consolidation and drill head cooling
