A classifier and concentrator sluice apparatus with recirculating water in a self contained unit for classifying, concentrating, and washing rocks, minerals, gems, and ore. The unit includes a water reservoir and water circulation system in a drum or a barrel or other container. The barrel includes an open top end and a water circulating pump and water supply lines for circulating water from the reservoir into a basin containing a colander having a selected mesh for separating aggregates by size. The tails including suspended solids and waste aggregate accumulate in the bottom of the tub for disposal.

A classifier and concentrator sluice apparatus with recirculating water in a self contained unit for classifying, concentrating, and washing rocks, minerals, gems, and ore. The unit includes a water reservoir and water circulation system in a drum or a barrel or other container. The barrel includes an open top end and a water circulating pump and water supply lines for circulating water from the reservoir into a basin containing a colander having a selected mesh for separating aggregates by size. The tails including suspended solids and waste aggregate accumulate in the bottom of the tub for disposal.

Described is a conveyor sluice system useful for mining fine particles of target minerals, such as gold, that are difficult to collect and are therefore often discarded. Several conveyor sluice arrangements discussed herein use a textured belt that is wrapped around head and tail pulley rollers. Post hydrocyclone aggregate distributor feeds conveyor sluice slurry onto the textured belt near the head pulley roller. As the conveyor sluice slurry flows down the textured belt surface, concentrated aggregate (rich in target heavy minerals) settles and gets trapped in the belt texture. At least one belt cleaning rinse nozzle aims rinse water at the textured outer surface and sprays the concentrated aggregate out from the belt texture. A concentrate launder collects the rinsed off concentrated aggregate and pumps it to a finishing table where the target minerals are separated and collected.

Described is a conveyor sluice system useful for mining fine particles of target minerals, such as gold, that are difficult to collect and are therefore often discarded. Several conveyor sluice arrangements discussed herein use a textured belt that is wrapped around head and tail pulley rollers. Post hydrocyclone aggregate distributor feeds conveyor sluice slurry onto the textured belt near the head pulley roller. As the conveyor sluice slurry flows down the textured belt surface, concentrated aggregate (rich in target heavy minerals) settles and gets trapped in the belt texture. At least one belt cleaning rinse nozzle aims rinse water at the textured outer surface and sprays the concentrated aggregate out from the belt texture. A concentrate launder collects the rinsed off concentrated aggregate and pumps it to a finishing table where the target minerals are separated and collected.

A classifier and concentrator sluice apparatus with recirculating water in a self contained unit for classifying, concentrating, and washing rocks, minerals, gems, and ore. The unit includes a water reservoir and water circulation system in a drum or a barrel or other container. The barrel includes an open top end and a water circulating pump and water supply lines for circulating water from the reservoir into a basin containing a colander having a selected mesh for separating aggregates by size. The tails including suspended solids and waste aggregate accumulate in the bottom of the tub for disposal.

A classifier and concentrator sluice apparatus with recirculating water in a self contained unit for classifying, concentrating, and washing rocks, minerals, gems, and ore. The unit includes a water reservoir and water circulation system in a drum or a barrel or other container. The barrel includes an open top end and a water circulating pump and water supply lines for circulating water from the reservoir into a basin containing a colander having a selected mesh for separating aggregates by size. The tails including suspended solids and waste aggregate accumulate in the bottom of the tub for disposal.

The modular portable sluice box is constructed from a plurality of smaller sluice box modules. Each of the sluice box modules includes a lower wall having a pair of longitudinally opposed ends and a pair of laterally opposed ends. A plurality of riffles are formed on an upper surface of the lower wall. A pair of sidewalls are secured to the pair of laterally opposed ends of the lower wall, respectively, and project upward therefrom. One of the sluice box modules may be releasably connected to both a longitudinally adjacent sluice box module, and also to a laterally adjacent sluice box module.

The modular portable sluice box is constructed from a plurality of smaller sluice box modules. Each of the sluice box modules includes a lower wall having a pair of longitudinally opposed ends and a pair of laterally opposed ends. A plurality of riffles are formed on an upper surface of the lower wall. A pair of sidewalls are secured to the pair of laterally opposed ends of the lower wall, respectively, and project upward therefrom. One of the sluice box modules may be releasably connected to both a longitudinally adjacent sluice box module, and also to a laterally adjacent sluice box module.

A mining sluice box having a louver processing zone comprising a plurality of louvers positioned perpendicular to the incline slope, with the pitch angle of the louvers being variable so as to permit adjustment of the intensity of a vortex flow between the plurality of louvers by adjusting the pitch angle of the plurality of louvers.

A mining sluice box having a louver processing zone comprising a plurality of louvers positioned perpendicular to the incline slope, with the pitch angle of the louvers being variable so as to permit adjustment of the intensity of a vortex flow between the plurality of louvers by adjusting the pitch angle of the plurality of louvers.