BENEFICATING DEVICE Russian patent published in 1999 - IPC

FIELD: mining machinery and equipment. SUBSTANCE: this can be used in development of placer deposits for example of gold, for extracting useful component in autonomous operation. Beneficating device has sluice which is made in the form of trough. Located in bottom part of trough is catching coating. Located atop of it directly on trough of sluice is screening grate. Bars of screening grate are oriented along trough and above it. End of trough is enclosed by similar grate. Vertical bars of this grate are located outside of trough. Catching coating is arranged in additional trough. Its external configuration corresponds to internal shaping of sluice trough. Additional trough can move inside sluice trough. Screen is pivotally connected with sluice trough. End of sluice is provided with grate and makes acute angle with bottom of sluice. Free end of screening grate is provided with abut which is made in the form of free end of one of longitudinal bars. Free end of this bar is bent down. Length of this bar is larger than length of remaining bars by value equal to depth of sluice trough. Aforesaid embodiment of beneficating device allows for utilizing energy of moving water mass especially in period of high flood so as to separate useful component from moving solid fraction. Clogging of trough space with pebble is excluded. EFFECT: higher efficiency. 4 cl, 4 dwg