Magnet block arrangement having an outwardly-directed field

US4834871A · kind A · utility

Assignee

• KHD Humboldt Wedag GmbH · DE

Inventors

• Hans G. Schnabel · Bornheim, DE
• Karl-Heinz Unkelbach · Neunburg vorm Wald, DE
• Marlene Marinescu · Frankfurt am Main, DE
• Nicolae Marinescu · Frankfurt, DE

Key dates

• Filing date: Oct 28, 1987
• Grant date: May 30, 1989
• Expiry date: Oct 28, 2007

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B03C1/10
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A magnetic separator comprising a rotatable drum including an axis of rotation and a periphery comprising a plurality of magnet blocks. The magnet blocks are mounted and arranged as circular rings about the axis of rotation. The ith magnet block is magnetized in a predetermined direction defined by .psi..sub.i =-n.rho..sub.i where n is a positive number and .phi..sub.i is an angle described by a line from the center of gravity of the ith block to the axis of rotation and a predetermine radius vector. The spacing between neighboring centers of gravity of the magnetic blocks, expressed as a sector angle, is smaller than or equal to about .pi./2 (n+1).