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:
Jan. 05, 1993
Filed:
Nov. 19, 1990
Robin R Oder, Export, PA (US);
EXPORTech Company, Inc., New Kensington, PA (US);
Abstract
An improved method of dry magnetic separation for separating materials of differing types and levels of magnetism from a raw sample is disclosed. The method includes precleaning the raw sample by first extracting a strongly magnetic fraction from a feebly magnetic fraction, followed by additional processing steps for the extraction of the feebly magnetic fraction and the collection of refined sampels for each fraction so separated. The recovered fractions are then analyzed for magnetic susceptibilities and are correlated to at least one identifying physical and/or chemcial characteristic in order to determine which fraction or fractions are to be recovered for further processing. Following that determination, the recovered fraction or fractions are processed for an additional magnetic separation step in order to yield a clean fraction.