Abstract: Methods, systems, and devices to remove slag, sands, and other contaminants from a scrap metal feed. The scrap separation device uses indirect heat provided by one or more heaters which are directed at an external surface of an outer cylinder and a unique arrangement of paddles on an inner surface of an inner cylinder to provide thermal and kinetic energy to dislodge the slag, sands, and other contaminants, and apertures through the inner cylinder to allow the dislodged contaminates to pass to the outer cylinder. The system includes at least one magnetic separation unit, a screening unit, and a scrap separation device. The system removes slag, sands, and other contaminants from a scrap metal feed, and partitions the cleaned scrap metal into various size grades, and the recovered contaminating slag and sands into various size grades.

Abstract: Methods, systems, and devices to remove slag, sands, and other contaminants from a scrap metal feed. The scrap separation device uses indirect heat provided by one or more heaters directed at an external surface of an outer cylinder to release the contaminants; a unique arrangement of paddles on an inner cylinder to provide kinetic energy to discharge the released contaminants, and apertures through the inner cylinder to allow discharged contaminates to pass to the outer cylinder. The presently disclosed invention further includes a system which comprises at least one magnetic separation unit, a screening unit, and a scrap separation device. The system may remove slag, sands, and other contaminants from a scrap metal feed, and partition the cleaned scrap metal into various size grades, and the recovered contaminating slag and sands into various size grades.

Abstract: A scraper control system for conveyor belt cleaning includes a pair of elongated scraper elements mounted at opposed ends to a pair of spring-biased arms. The sraper mounting arms are attached to a separate shaft at each side of the belt. Each shaft is torqued by one of an identical pair of torque activator units. Each torque activator unit includes an extensible bellows member adapted to be placed into communication with a regulated, high pressure source of water, such as mine waste water. The bellows member has a mounting are fixed relative to the frame of the conveyor and a moveable torque are connected at one end to the bellows member and fixed at a seond end to the shaft. High pressure water preferably mine waster water is regulated between 15 to 100 psig and introduced into the bellows member to cause the torque arm to exert a force on the shaft which, in turn, transmits the force through the spring-biased mounting arms to the scraper elements.