SCREEN-CONCENTRATOR Russian patent published in 2002 - IPC

FIELD: concentration of minerals; gravity concentration apparatus; extraction of diamonds from diamond-containing materials. SUBSTANCE: screen-concentrator includes box mounted on bearing frame and secured by means of shock absorbers having sieving surface; unloading side of this surface is provided with concentrating member made in form of finned coat with transversal fins; it is wear- resistant and is provided with at least one longitudinal groove whose interior is conjugated at low level with inter-fin recesses by means of lateral holes; groove and section of recesses are shielded at the top by longitudinal gable shiel; intake chute is fitted at outlet end of longitudinal groove; fins have slope towards longitudinal groove and are inclined to loading side; apparatus is provided with vibration exciter. EFFECT: enhanced efficiency of classification. 2 cl, 2 dwg