The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 03, 1985
Filed:
Nov. 15, 1983
Nicholas M Hepher, Lamberhurst, GB;
Blue Circle Industries plc, London, GB;
Abstract
Particles having different properties (e.g. particulate fly ash and carbon) are separated by moving the particles forwards along a horizontal, gas-permeable electrode plate (1) above which is mounted a second electrode (2) having at least one plate (4) mounted at an acute angle (.alpha.) to the horizontal. Preferably, two plates (4) each extend sideways from a central block (3) of dielectric material. The particles are fluidized, continuously or intermittently, by a gas stream passed upwards through the plate (1), which may be of sintered metal. An alternating electric field is generated between the electrodes (1, 2) by a high voltage AC power source (14). The field lines (16) from each plate (4) curve to the side and impart centrifugal forces to particles charged by friction or conductive induction, which forces separate the lighter, more highly charged particles from the others. The particles may be moved by means of a vibratory transducer (12). Alternatively, the gas-permeable plate may slope downwards in the forward direction allowing the fluidized particles to move in that direction under the force of gravity. The separated particles are collected in bins (13) arranged around the lower electrode (1).