Monday, February 17, 2014

Hydraulic riffles for gold recovery in a heavy black sand environment.

Hydraulic riffles for gold recovery in a heavy black sand environment.
This is a set of hydraulic riffles I built  a few years back. This was the underflow from a Pan American Jig.

We had a lot of blacksand and it contained significant  amounts of gold. Regulating the water pressure to around 7 lbs on this particular job seemed to do the trick!

Really the biggest problem we had was handling the enormous amounts of black sand and being able to transport it upriver to a table concentrator. This was on a floating Diamond recovery barge I built.