Patent ID: 7387266
Filing Date: 2008-06-17
Classification: B02C,B03B,Y02W,Y10S

Abstract:
1. An aggregate recycling apparatus including a crushing device for crushing waste, blowing means for blowing air toward crushed products, a conveying device for conveying the crushed products, and a screening device for screening the crushed products, the apparatus comprising: the crushing device having a vibration hopper, an impact crusher, a discharge conveyor, and a magnet which are integrally coupled with one another, the vibration hopper receiving waste to be crushed to a predetermined size, separating earth from the waste, discharging the earth onto a side conveyor disposed below the vibration hopper, and supplying the waste to the impact crusher, the impact crusher receiving the waste from the vibration hopper and crushing the waste, the discharge conveyor being installed below the impact crusher and discharging crushed products, and the magnet being installed above the discharge conveyor and separating metallic material from the crushed products conveyed on the discharge conveyor; an air circulation type fine particle and foreign substance separation device having a forced air flow passage, an air conveyor box, and a cyclone, the forced air flow passage being defined below an end of the discharge conveyor on which the crushed products, obtained from the impact crusher of the crushing device, are conveyed, directing air supplied from a blower toward the crushed products dropping from the end of the discharge conveyor so that the crushed products can be scattered in the air conveyor box depending upon specific gravities thereof, and partially communicating with the cyclone and the air conveyor box to re-circulate air using the blower, upper and side walls of the air conveyor box being closed, the forced air flow passage being defined at a portion of an upper part of the air conveyor box to communicate with the cyclone, the cyclone performing dry sucking and separating fine particles and foreign substances contained in the crushed products, which are scattered into the air conveyor box; an air conveyor installed at a lower part of the air conveyor box to convey the crushed products which drop against suction force of the cyclone, on to a double vibration screen serving as the screening device; and the double vibration screen for receiving the crushed products from the air conveyor and screening the crushed products into three types of aggregate.