PIPE SLUICE FOR ENRICHMENT OF SAND PLACERS OF PRECIOUS METALS Russian patent published in 2023 - IPC B03B5/42 B03B5/70 

FIELD: mining.

SUBSTANCE: used to enrich the placer sands of precious metals (gold, platinum, silver, etc.). The pipe sluice for the enrichment of placer sands of precious metals includes a support frame with supporting-driven rollers with a metal enrichment pipe installed on them. A spiral-conical flange is attached to the inner surface of the pipe and an inlet perforated branch pipe is installed. The size of the perforation along the length of the nozzle varies in sections from the smallest at the inlet to the largest at the outlet. The height of the flange from the entrance to the enrichment pipe increases in sections from the smallest value to the largest along the length of the perforated part of the inlet pipe. The angle of inclination of the generatrix of the flange to the longitudinal axis of the enrichment pipe is 50-55°. The pipe sluice is equipped with a central conduit with nozzles installed inside the enrichment pipe along its entire length to wash one of the side walls of the pipe, and to clean the perforations of the inlet pipe from stuck pieces of solid, it is equipped with an irrigation pipe located above the inlet pipe and roller cleaners rolling over the surface of the perforated pipe.

EFFECT: increase in the productivity of the device and the quality of the concentrate, as well as providing the possibility of operational control of the enrichment process and reducing the labor intensity of the process of removing the concentrate.

1 cl, 4 dwg