Jord designed and constructed two scrubber systems for an Australian mining major looking to recover molybdenum from its copper concentrate circuit, as a separate saleable product.

The first scrubber system collects fumes from a large bank of flotation cells and passes this stream through a packed tower.  A combination of alkaline and oxidant reagents irreversibly converts the H2S into sodium sulphate.  This scrubbing technology has a range of applications across a broad range of industries.  Examples include sour gas.

Downstream of the flotation process, moly concentrate needs to be dried before bagging for export.  Dust laden flue gas from the dryer also requires scrubbing.  Jord’s solution for this stream entailed an eductor venturi scrubber.

Why the two different technologies?  The short answer is the second application is for a particulate pollutant, which requires a venturi, whereas the first application, for a gaseous pollutant, is best suited to a packed tower.