Flotation machine and ore pulp tank thereof

The invention discloses a flotation machine and an ore pulp tank thereof. The ore pulp tank comprises a tank body and a sealing block, the head side of the tank body is provided with an inclined flow guide plate used for collecting foam overflowing out of the tank body, and the inner walls of the two sides of the width direction of the tank body are each provided with a strip-shaped first longitudinal rib close to the tail side in a protruding mode. The first longitudinal ribs on the two sides in the width direction are arranged in pairs in a manner of facing each other; and the sealing block is used for being arranged on a bottom plate of the tank body, and the two ends of the sealing block abut against the corresponding first longitudinal ribs respectively, so that a containing space used for containing materials is defined by the sealing block and the head side of the tank body. The ore pulp tank is designed to comprise the tank body and the sealing block, the space, away from the scraper blade side, of th