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. 16, 1993
Filed:
Jun. 24, 1991
Applicant:
Inventors:
Assignees:
Kawasaki Jukogyo Kabushiki Kaisha, Kobe, JP;
Maruo Calcium Co., Ltd., Hyougo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F27B / ;
U.S. Cl.
CPC ...
432106 ; 432 13 ; 432 58 ;
Abstract
An apparatus for preheating a granular material having a suspension preheater including a plurality of stages of cyclones arranged above a calcination furnace such that the granular material is preheated by waste gas from the calcination furnace as the granular material passes through the suspension preheater. The apparatus has a precalciner of fluidized-bed type or spouted-bed type connected, in place of a duct used in conventional apparatus, between a collecting cyclone directly connected to be calcination furnace and a first cyclone constituting the most downstream stage.