What angle should my sluice be?

between 5 – 7 degrees
When setting up a sluice the proper angle must be observed. It’s usually between 5 – 7 degrees of slope and should allow most round rocks and pebbles to pass through easily. You don’t want the material zipping through but rather kind of tumbling through slowly.

How long should my sluice box be?

To run fines on as little as 18 gpm, you should start off with a sluice box no narrower than 8” and no wider than 10”. As for length, maybe something in the 6′ to 8′ range. However, you won’t be able to effectively process a ton per hour of 150 mesh material and maintain a high rate of recovery.

What is a sluice box and how does it work?

Sluice boxes work by essentially creating a straight, consistent channel, with regularly spaced slow spots created by riffles. Each riffle creates an eddy, a backflow of water that allows the gold to settle out. Material is placed at the top of the box and carried in suspension down the channel.

How do you size a sluice box?

How do you make a sluice box?

To build your own sluice box follow these simple steps:

  1. 1) Choose your Materials.
  2. 2) Plan and Design your Sluice Box.
  3. 3) Build the Frame.
  4. 4) Choose the Riffles.
  5. 5) Adding the Matting and Mesh.
  6. 6) Testing the Sluice Box.
  7. 7) Possibly Upgrade to a Recirculating Sluice.
  8. Summary.

What are Hungarian riffles?

Riffles used in undercurrents that are small angle irons or pieces of wood shod with iron. Synonym of: transverse riffles. Click here to see list of references, authorities, sources and geographical terms as used in this glossary.

How does a ground sluice work?

Running Water through a Ground Sluice Ground sluices were often used at large hydraulic mining operations. Trenches were cut into bedrock and water was routed through these ditches. Obstructions, both natural and man-made, would help to capture gold particles that were released from the gravels.