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Title:
POWDER AND GRANULAR MATERIAL PREHEATING DEVICE
Document Type and Number:
Japanese Patent JP2003222474
Kind Code:
A
Abstract:

To efficiently preheat powdery and granular material by preventing the air for conveying the powdery and granular material from being heated, and effectively utilizing temperature of a hot waste gas from a rotary kiln to reduce the fuel consumption in burning cement.

This powdery and granular material preheating device comprises a preheater 1 having a plurality of cyclones 4, 3, 2 successively arranged from an upstream side to a downstream side in the waste gas flowing direction in ducts 11, 10, 9 for circulating the waste gas of high temperature, and charging the separated powdery and granular material to the cyclones 3, 4 of one step upstream side on the basis of the waste gas flowing direction or a temporary calcinator 6, and a cyclone 24 for separating the powdery and granular material pneumatically carried in a duct 22 by a pneumatic carrier 21, and charging the same to the duct 9 through a chute 26.


Inventors:
BANDO HIROSHI
GOHARA TAKANARI
Application Number:
JP2002022159A
Publication Date:
August 08, 2003
Filing Date:
January 30, 2002
Export Citation:
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Assignee:
ISHIKAWAJIMA HARIMA HEAVY IND
International Classes:
C04B7/44; F27D13/00; (IPC1-7): F27D13/00
Attorney, Agent or Firm:
Tsunemitsu Yamada (1 person outside)



 
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