Title:
CEMENT RAW MATERIAL FIRING DEVICE AND MANUFACTURING METHOD OF CEMENT CLINKER
Document Type and Number:
Japanese Patent JP2021139566
Kind Code:
A
Abstract:
To provide a cement raw material firing device allowing stable operation by suppressing "coming off" of calcined raw material.SOLUTION: A cement raw material firing device comprises a cement kiln 20, a calcination furnace 12 and a rising duct 14 connecting a kiln tail 22 of the cement kiln 20 to the calcination furnace 12. The rising duct 14 of the cement raw material firing device has, on an inner wall surface 14A, a projected throttle part 50 throttling an exhaust gas passage from the cement kiln 20. In a vertical directional section view passing a center line CL1 of the rising duct 14 and a rotation axis CL2 of a body part 26 of the cement kiln, an angle between a downward surface 51 of the throttle part 50 and the inner wall surface 14A is less than 90°.SELECTED DRAWING: Figure 2
Inventors:
IO DAICHI
NAKAGAWA HISANORI
MURAKAMI KOHEI
SUEMASU TAKESHI
NAKAGAWA HISANORI
MURAKAMI KOHEI
SUEMASU TAKESHI
Application Number:
JP2020038599A
Publication Date:
September 16, 2021
Filing Date:
March 06, 2020
Export Citation:
Assignee:
UBE INDUSTRIES
International Classes:
C04B7/44; F27B7/20; C04B7/60; F27D17/00
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yasunori Ishizaka
Yasunori Ishizaka