The invention provides a slag separation and beneficiation device, and belongs to the technical field of mine equipment. The slag separation and beneficiation device comprises a groove body, a rollerand a main shaft; the roller comprises a spiral frame and a screen; the spiral frame is connected with the main shaft through a connecting piece; the screen wraps the spiral frame; the groove body isa hollow shell with an opened upper end; two ends of the main shaft are arranged on the side walls of the groove body; a separation plate is arranged in the groove body for dividing the groove body into a first discharge hopper and a second discharge hopper; a first discharge port is formed in the lower part of the first discharge hopper; a second discharge port is formed in the lower part of thesecond discharge hopper; a feed port is formed in the upper part of a feeding end of the first discharge hopper; and a gap is formed between the end, relative to the feed port, of the spiral frame andthe inner wall of the groove body. The slag separation and beneficiation device is smooth in slag removal, prolongs the service life of the main shaft and the screen, saves the cost, and improves theworking efficiency.