Canadian Mining Journal

Feature

GIW High Volume Froth (HVF) Pump

The HVF pump is designed to work with slurry processes that use froth to help separate materials during processing. GIW's pump can be used in a wide variety of mining and processing industries, from oil sands to phosphate plants.


The HVF pump is designed to work with slurry processes that use froth to help separate materials during processing. GIW’s pump can be used in a wide variety of mining and processing industries, from oil sands to phosphate plants.

How froth stumps traditional pumps

Froth is created by a combination of air and chemical additives to the slurry to help separate the desired materials from the waste. Froth is an effective method for material separation, but when it comes to pumping the bubbly slurry, pumps normally can’t handle froth.

The problem is that the traditional slurry pump cannot pump air efficiently. Air bubbles in the froth build up at the pump entrance, where pressure is low, until the air completely blocks out the fluid, a condition known as airlock.

The secret of the HVF pump design

Typically, air bubbles gather at the center of the impeller as the heavier fluids are spun to the outer edges. The patent pending GIW HVF froth pump includes a de-aeration system and vented impeller for active airlock venting. In the HVF pump, small holes in the center of the impeller allow air bubbles to pass through to a separate port. The port vents air up and out of the pump to normal atmospheric pressure. 

Any liquid that passes through the port is returned to the process tank.  Air is no longer building up at the impeller eye or pump entrance, so airlock is avoided.

The pump offers improved efficiency and is environmentally friendly and cost-effective. Fewer pumps are required, meaning less capital expense, less water and power usage.

To learn more about GIW’s HVF pump visit www.giwindustries.com, or call GIW at 1.888.TECHGIW (832-4449).

About GIW Industries

GIW Industries began as a small foundry and machine shop in 1891. Today, the company comprises two manufacturing facilities and numerous service centers. As a subsidiary of KSB AG of Germany, a global pump and valve manufacturer, GIW has the infrastructure to supply pumps worldwide.


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