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:
Jun. 10, 1986
Filed:
May. 17, 1984
Kazuhiko Nakaoji, Ichihara, JP;
Mitsugu Kamao, Chigasaki, JP;
Kunizo Shinano, Matsudo, JP;
Takashi Kuwabara, Kawasaki, JP;
Masazumi Ito, Kawasaki, JP;
Kaoru Aoki, Hiratsuka, JP;
Hayami Ito, Himeji, JP;
Shuhei Tatsumi, Akashi, JP;
Shoichi Takao, Akashi, JP;
Nitaro Suzuki, Funabashi, JP;
Takashi Watanabe, Funabashi, JP;
Electric Power Development Co., Ltd., Tokyo, JP;
Kawasaki Jukogyo Kabushiki Kaisha, Kobe, JP;
Sumitomo Heavy Industries, Ltd., Tokyo, JP;
Abstract
This process, which comprises subjecting coal to gravity classification to classify into a low ash coal, a middle ash coal and a high ash coal; deashing the middle ash coal by flotation; and using the deashed middle ash coal together with the low ash coal as the materials for producing a coal-water slurry, provides a low ash content and high solid content coal-water slurry in a high coal recovery as well as economically. This coal-water slurry is able to handle, store and burn as are fuel oils.