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:
Jan. 26, 2021
Filed:
Mar. 19, 2018
Applicant:
Tokuyama Corporation, Shunan, JP;
Inventors:
Assignee:
TOKUYAMA CORPORATION, Shunan, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B 7/44 (2006.01); C04B 7/28 (2006.01); B09B 3/00 (2006.01); C04B 18/08 (2006.01);
U.S. Cl.
CPC ...
C04B 7/44 (2013.01); B09B 3/00 (2013.01); C04B 7/28 (2013.01); C04B 18/08 (2013.01); B09B 2220/06 (2013.01);
Abstract
A process for producing a modified fly ash comprising the steps of providing, as a raw material, the raw fly ash discharged from a pulverized coal combustion boiler; classifying the raw fly ash into a crude powder and a fine powder; removing the unburned carbon contained in the crude powder by heating the crude powder at a temperature in a range of 500 to 1000° C.; and mixing together the crude powder from which the unburned carbon has been removed and the fine powder to obtain a modified fly ash.