Monday, May 20, 2013

One of my sluice box designs that will handle 100 yards per hour of placer gravels

sluice box designs that will handle 100 yards  per hour of
Sluice box designs that will handle 100 yards  per hour 

This is my sluice design that is pretty basic and straight forward. This will work well with any side delivery system be it a trommel or a vibrating screen.

This configuration  will handle roughly 80 yards per hr of 3/4 inch minus with a section on the back of the screening section being sized for the known or anticipated course gold.

 The first section of recovery is set at approximately 1.5 to 2.5 inches to the foot these vary depending on blacksands or other heavy mineral, this being said is a general setting that works on most placer properties I have mined.

The coarse gold section is for anticipated nugget gold that some properties may have. This sluice runs at a steeper gradient of 2 inches or greater if necessary to keep the high volume of oversize in the slipstream. This configuration is based on typical screen analisis of 45% to 55% of the placer gravel, passing a 1 inch or 3/4 inch screen so you can be looking at an overall capacity well in  excess of 100 yds per hour bcy at the stockpile.

Our water requirements need to be in excess of 150 gallons per minute per foot of sluicebox width.

Almost double that in the coarse gold section per ft of sluicebox width.