UNIT FOR ENRICHING PLACER SANDS Russian patent published in 1996 - IPC

FIELD: mining industry. SUBSTANCE: unit has upright sets of gutters with distributive barriers 2, side walls 3, and, installed on bottom 17, templets 4 with templet-lifting mechanism 4 and arrangement for receiving drain 9 and concentrate 8 with mechanism for lifting the latter. Transversely to gutters 1 placed are intermediate linkages hinged to templets 4. Gutter barriers 2 and side walls 3 are provided with slots wherein templets may move. Upright guiding arrangements 6 along which move coupled to them sliders are installed on side walls 3. Arrangement 8 has deflectors attached to its bottom 26 for guiding the stream of concentrate washing-off each time as modules are rinsed into bottom section of arrangement 8. Heavy particles of desired component are retained by templets 4 and accumulated on bottom 17. Separated products (wastes) are transported into arrangement 9 along guiding supports placed on the bottom of arrangement 8. When rinsing is conducted, intermediate linkages displace in slots of side walls 3 and simultaneously are lifted by templets 4 of each set of gutters 1. Sliders interact with arrangements 6. In this case, templets 4 are turned obliquely in respect to bottom 17 of gutter 1 and move in slots of barriers 2 opening space for washing off desired component concentrate by means of sprinkler system 12. EFFECT: enhanced enriching efficiency. 2 cl, 8 dwg