SCRUBBING UNIT Russian patent published in 2003 - IPC

FIELD: preliminary concentration of gold-containing sands. SUBSTANCE: proposed unit includes base frame with loading receiving bin and unloading chute mounted on it, friction drive with bearing and drive rolls, scrubber-washing drum consisting of disintegrating, screening and outlet flights, circular sill mounted between disintegrating and screening flights and thrust roller secured on base frame. Disintegrating, screening and outlet flights are made in form of single cylindrical housing; screening flight is provided with rectangular ports across which metal cover plates are secured on the outside and rim provided with stiffeners and engageable with thrust roller is secured on the outside at boundary of screening and outlet flights. EFFECT: enhanced maintainability of unit; enhanced efficiency. 4 cl, 3 dwg