Sluice box and method of use

摘要

A portable sluice box for efficient processing and classification of alluvial sand, gravel, detritus, or classification of rock that has been mined and crushed. Sluice having three stages of material classification including, a movable primary screen, viewable secondary screen, distributor box with flow control baffle, laminar flow stratification trough, and cleanable bottom riffle system.

主权项

1. A portable sluice box comprising;
a top hopper having a primary screen, a secondary screen directly below the primary screen, the top hopper hinged to dump classified material from the primary screen and to facilitate removal of classified material from the secondary screen, a classified material distributor box having a flow control baffle, a laminar flow stratification trough,
the laminar stratification trough having a smooth bottom surface, a tertiary classification riffle system,
the classified material distributor box directly under the secondary screenand configured to receive all of the classified material passing through the secondary screen, the flow control baffle forming a single orifice that restricts discharge of the classified material from the material distributor box to the laminar flow stratification trough, the classified material discharging from the laminar flow stratification trough to the tertiary riffle system, and, the portable sluice box sized to be transported by hand.