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:
Mar. 11, 1986
Filed:
Jan. 27, 1984
Roger W Fenstermaker, Bartlesville, OK (US);
Phillips Petroleum Company, Bartlesville, OK (US);
Abstract
Mine-run lignite having an unsalably high content of ash-producing clay is treated selectively to shatter the more friable portions; the effluent from the shattering operation is classified by size; at least the classification containing the smallest particles is discarded; and particles of size larger than those discarded are combined to produce a mixture of lower ash producing clay content. Preferably, the classified effluent is separated into a first portion containing the larger, salable particles; a second portion containing medium-size particles which contains too much clay to be readily salable with the medium-size particle mixture subjected to further treatment such as jigging or heavy media separation to yield a product of clay content that is salable; and a third portion of smaller size particles which is discarded.