APPARATUS FOR EXTRACTING SMALL-SIZE MINERAL FRACTION Russian patent published in 1999 - IPC

FIELD: concentration of deposit gold, platinum and heavy minerals. SUBSTANCE: apparatus has housing, screen, jigging chamber, screw-type conveying member, vibratory drive, and pressure regulating unit. Vortex exciter is mounted in side wall and connected with vibratory drive. Vortex exciter extends into jigging chamber beyond edge of screw-type conveying member mounted on jigging chamber wall. Screen is made composite, and its second part is pivotally positioned and provided with thrusts allowing second part to be rotated upward. EFFECT: increased efficiency in extracting valuable components. 2 dwg