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:
May. 31, 1988
Filed:
Nov. 17, 1986
Applicant:
Inventors:
Assignee:
Babcock-Hitachi Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B02C / ;
U.S. Cl.
CPC ...
241 21 ; 241 22 ; 241 29 ;
Abstract
A process for producing a coal-water slurry having a low viscosity and a good stability even in a high coal concentration without increase in the production cost is provided, which process is characterized in that when coal is fed to a wet mill and milled therein, the coal feed is divided in a multi-stage manner, also in that two coals of different grindabilities are milled together.