Kawasaki Jukogyo Kabushiki Kaisha

Other

Kawasaki Jukogyo Kabushiki Kaisha Mitsubishi Corporation

Akio Nio

Eiji Inoue

Yoshio Uchiyama

Junya Nakatani

Torakatsu Miyashita

Teruyuki Nakazawa

Provided is a method for producing iron carbide in which free carbon is generated with difficulty. When iron carbide is produced by reducing and carburizing iron-containing raw materials for iron making using a reaction gas mainly containing hydrogen and methane, steam or carbon dioxide is added into fluidized bed reactor ( ) through line ( ) in addition to the reaction gas supplied from line ( ) into reactor ( ) corresponding to a quantity of free carbon generated in reactor ( ) which is obtained by means of dust meter ( ). Consequently, the generation of the free carbon can be controlled.

Method for producing iron carbide

Provided is a method for managing an operation of a producing process for obtaining an iron carbide product having a goal composition in a two-stages reaction process. A first-stage reaction process for partially reducing an iron-containing material for iron making is carried out, and a second-stage reaction process for performing further reduction and carburization is then carried out. A solid sample is taken at an outlet of a reactor for the first-stage reaction process to measure a reduction ratio of the solid sample. By regulating a parameter capable of changing a reduction ratio of the first-stage reaction process, an IC ratio obtained after the second-stage reaction process can be adjusted.

Operation management method of iron carbide production process

Disclosed is a method for producing iron carbide, in which metallic carbide is difficult to be formed on the inside of heating tubes of a tube-shaped heater for heating reducing gas and carburizing gas to be supplied to a reactor. Carburizing gas which is supplied to reactor,is heated in tube-shaped heater,by combustion gas used for heating reducing gas and circulating gas, and then a mixture comprising carburizing gas, reducing gas and circulating gas is supplied to reactor,. Iron-containing raw materials are reduced and carburized in reactor

Production method of iron carbide

Provided is a method for efficiently producing iron carbide depending on a particle size of an iron-containing material or the progress of reaction. In a fluidized bed reactor,, a coarse iron ore is fluidized in blocks,to,, a fine iron ore is fluidized in blocks,to,, and a flow rate of a reaction gas supplied to the blocks for the fine iron ore is regulated by a flow regulating valve

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Kiyose, Japan

Akio Nio