Patent ID: 6696655
Filing Date: 2004-02-24
Classification: B03B,B07C,Y02W,Y10S

Abstract:
A method for sorting out metal fractions from a bulk material stream, the steps of the method comprising:a) providing a bulk material particles conveying means wherein particles of the bulk material stream move along the conveying means in a predetermined arranged width; b) providing a drop section along a distal end of the bulk material conveying means; c) providing a plurality of sensor coils positioned below the bulk material conveying means; d) scanning the bulk material stream particles by the plurality of sensor coils; e) providing an optical determination device for determining the position of the bulk method particles; f) providing a plurality of blow-out nozzles positioned proximal to the bulk material conveying means drop section, each blow-out nozzle being individually controllable as a function of a scanning result from the sensor coils; g) determining an edge rise of a damping of in each case one of a multiplicity of high frequency fields induced by LC resonant circuits formed on a horizontal portion of the bulk material stream; h) evaluating each edge rise; and i) controlling at least one of the plurality of blow-out nozzles for deflecting the particles into a branched partial stream by selectively blowing against individual bulk material stream particles.