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. 06, 2012
Filed:
Dec. 26, 2006
Kazuyoshi Matsuo, Ichihara, JP;
Kazuo Abe, Tokyo, JP;
Hitoshi Koyama, Tokyo, JP;
Toshio Yamaki, Ichihara, JP;
Kazuyoshi Matsuo, Ichihara, JP;
Kazuo Abe, Tokyo, JP;
Hitoshi Koyama, Tokyo, JP;
Toshio Yamaki, Ichihara, JP;
Mitsui Engineering & Shipbuilding Co., Ltd., Tokyo, JP;
Abstract
Unburned carbon is efficiently separated according to the properties of fly ash. An apparatus is provided which comprises: a slurry preparation tank () in which water (c) is added to fly ash (a) to produce a slurry (d); a scavenger addition device () for adding a scavenger (e) to the slurry (d); a vertical surface-modification device () in which the slurry after addition of the scavenger is stirred at a high speed to impart shear force thereto and thereby cause the scavenger (e) to adhere to the surface of unburned carbon (b) contained in the slurry; a regulating tank () in which a blowing agent (f) is added to the slurry (d') which has undergone surface modification with the surface modification device; and a flotation machine () with which the unburned carbon (b) is floated together with bubbles (n) and separated from the slurry containing the blowing agent.