Title:
FIRING METHOD AND FIRING FURNACE
Document Type and Number:
Japanese Patent JP2017039612
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a firing method capable of firing an object to be fired while suppressing the adhesion of organic substances derived from oxidation of a firing raw material constituting the object to be fired and a binder and the like by a simple configuration, and to provide a firing furnace capable of performing the firing method.SOLUTION: In a firing method, a first process is performed which, when firing an object to be fired 90 comprising a firing raw material fired by heating and organic substances generating combustible gas by heating, stores the object to be fired 90 in a furnace body 10 having airtightness inhibiting the invasion of gas from the outside, performs combustion in the furnace body 10 while introducing an inert gas, fuel gas, and air, and lowers the oxygen concentration in the furnace body 10 to a predetermined reference concentration or less, switching to a second process is performed before the temperature in the furnace body 10 reaches a temperature at which the oxidation of the firing raw material occurs in the first process, and, in the second process, operation is performed which reduces the introduction amount of the inert gas and an air ratio in comparison with the first process.SELECTED DRAWING: Figure 1
Inventors:
ITO HIDEKI
Application Number:
JP2015160256A
Publication Date:
February 23, 2017
Filing Date:
August 17, 2015
Export Citation:
Assignee:
DAIDO STEEL CO LTD
International Classes:
C04B35/64; F27D7/06
Attorney, Agent or Firm:
Ueno patent office