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. 17, 1987
Filed:
May. 10, 1985
James E Funk, Alfred Station, NY (US);
Alfred University Research Foundation, Inc., Alfred, NY (US);
Abstract
A process for preparing a carbonaceous slurry is provided. The process involves the steps of (1) providing a slurry with specified properties, and (2) thereafter mixing said slurry. The slurry provided in the first step of this process contains from at least about 60 weight percent of sold carbonaceous material (such as coal), no more than about 40 weight percent of carrier liquid, and from about 0.1 to about 4.0 weight percent (by weight of dry carbonaceous material in the slurry) of dispersing agent. At least about 5 weight percent of the carbonaceous particles in the slurry provided in the first step are of colloidal size, being smaller than about 3.0 microns. The Brookfield viscosity of the slurry provided in the first step is less than 4,000 centipoise. The mixing step of the process of this invention improves the properties of the slurry provided, decreasing its viscosity.