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:
Dec. 17, 1985
Filed:
Sep. 21, 1983
Applicant:
Inventors:
Katsumi Muroi, Kudamatsu, JP;
Akio Yamamoto, Kudamatsu, JP;
Yoichi Nakamura, Kudamatsu, JP;
Toshihiko Takahashi, Kudamatsu, JP;
Morihisa Maruko, Shimoinayoshi, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10L / ;
U.S. Cl.
CPC ...
44 23 ; 44 1 / ; 44 1 / ; 201-5 ; 201 20 ; 201 22 ; 201-6 ;
Abstract
A upgrading method of low-rank coal containing higher ash and moisture contents into coal decreased in ash content and decreased in moisture content and heightened in heating value includes subjecting the low-rank coal to a low-temperature dry distillation treatment, pulverizing the dry-distilled low-rank coal to form a coal-water slurry and adding a binder to the slurry to effect oil agglomeration of the coal and promote separation of the ash.