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:
Feb. 23, 1988
Filed:
Jul. 09, 1984
Applicant:
Inventor:
Boleslaw Ignasiak, Edmonton, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10L / ;
U.S. Cl.
CPC ...
44 51 ; 44 56 ; 44 57 ; 44 61 ; 44 23 ; 44 24 ;
Abstract
The process involves adding a low quality oil to an aqueous slurry of sub-bituminous coal particles to act as a selective agglomerating agent. When the mixture is agitated, as by pumping it through a pipeline loop, the coal particles agglomerate and may later be separated from the minerals by screening. The low quality oil used is selected from the group consisting of bitumen, heavy oil, and emulsions thereof. In a preferred aspect, a light hydrocarbon diluent, selected from the group consisting of kerosene, naphtha, and diesel oil, is added to improve the agglomeration results.