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. 02, 1979
Filed:
Apr. 03, 1978
Applicant:
Inventors:
Norman L Carr, Allison Park, PA (US);
Edgar L McGinnis, Gibsonia, PA (US);
Assignee:
Gulf Research & Development Company, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10G / ;
U.S. Cl.
CPC ...
208177 ; 208283 ;
Abstract
The rate of separation of suspended mineral particles from a coal liquid is increased by adding a mixture of a hydrocarbonaceous oil and a calcium salt, such as calcium carbonate, to the coal liquid. The increase in the separation rate is achieved even though the coal mineral particles naturally contain a calcium salt. The premixing of the calcium salt with hydrocarbonaceous oil considerably enhances the separation rate as compared to the addition of the calcium salt alone even when the hydrocarbonaceous oil is a distillate fraction which is derived from the coal liquid itself.