Patent ID: 6036028
Filing Date: 2000-03-14
Classification: B03B

Abstract:
An apparatus for separating out light materials from mineral raw materials, comprising:charging means for raw material, including a charging tube that is provided with an eccentrically arranged inlet for tangential introduction of raw material;an inner chamber, as a coarse sand chamber, for separating out coarse sand received from said charging tube of said charging means;an outer chamber, as a fine sand chamber, that serves for sorting out fine sand pursuant to the fluidized bed process, wherein said outer chamber communicates with an overflow chute of said charging tube via a first overflow in the form of an inclined surface;a second overflow associated with said outer chamber for light materials;an impingement body centrally disposed in said inner chamber such that an annular gap is provided between an outer periphery of said impingement body and an inner wall of said inner chamber, said charging tube opening out centrally above said impingement body; anda perforated basket, for adjusting flow resistance, and hence separation particle size, disposed so as to be displaceable in an axis of said charging tube and bridging a space provided between said impingement body and an opening out end of said charging tube, wherein said overflow chute of said charging tube is provided at an end thereof remote from said impingement body, and wherein as a function of a separation particle size setting of said charging means, which is adjusted by displacement of said perforated basket, said overflow chute communicates either with said outer chamber or with said second, light material overflow.