DREDGE Russian patent published in 2019 - IPC E21C50/00 E02F3/08 

FIELD: mining engineering.

SUBSTANCE: invention relates to mining equipment, namely to a device for development of placer mineral deposits by a dredging method. Dredge includes a revolving screen, a pebble tray located at a slope from a revolving screen to a stacker mounted on a pontoon of a dredge; at that, the pontoon is made with a scoop in the bow, the pebble tray is made with possibility of rotation in the horizontal plane relative to the pontoon. In the pontoon the pipe is installed with inclination towards the nose part of the dredge, the upper end of which is located under the pebble tray after its rotation, and the lower end at a distance l from the axis of the lower scoop drum during dredging of the lower layer of gold-bearing sands to the center of bottomhole peat dump.

EFFECT: technical result consists in prevention of depletion of gold-bearing sands.

1 cl, 2 dwg