Here is an interesting
gizmo I ran across lately, its a
sipon tube. It will transfer water from one bucket to
another as in a recirculating system when you are
trying to only pump clean
water and not all the sediment.
You have to have the tubs or buckets full of water and
then fill the tube
and cup your hands over the ends
and flip it around and into the water quickly. Then the
water will drain
to the lower one as you pump it out.
This is an old tip for successful prospectors but one that needs repeating.
Classify Classify Classify
Any Gold recovery
system (wet or dry) will work much better
if it is fine
tuned to the majority of gold to be found.
If most of the gold
in the area
is very fine use a fine screen to get rid of the large
stuff. Then
slow down
the water, and / or, reduce the angle of riffle tray
accordingly.
Just enough
water and angle to float off the lighter material and
retain the gold as
needed.
In a drywasher you can adjust the air flow and angle,
even on a puffer
you
can change the stroke of the bellows and riffle tray
angle to tune it.
This may
take a little extra setup time, but is well worth the
time and effort.
Classifiers
can be homemade or bought, I have 3 homemade sizes 1ft.
square out of 1
x
1 1/2 in. boards and screen and screen molding
boards. Sizes
of screen are
1/16 in win screen, 1/8 in win screen and 1/4 inch
screen. If you
can get all
the material screened to about the same size, it will
be a lot easier to
separate
the gold out of it! If your concerned about losing some
large gold run
a metal
detector over your screened tailings. Or run some
of it in another
cleanup to
see if you are losing any larger gold by screening.
Add a drop or two of any
dish soap to your recirculating system
this will reduce the surface tension of the water and
let the fine
gold drop out. I like the Jet Dry myself.