Operation management method of iron carbide production process

A method of managing an operation of an iron carbide producing process, comprising steps of:

• performing a first-stage reaction process for partially reducing various iron-containing materials for iron making, and then performing a second-stage reaction process for carrying out further reduction and carburization;
• taking a solid sample at an outlet of a reactor for the first-stage reaction process to measure a magnetic permeability of the solid sample;
• obtaining a reduction ratio of the solid sample from the magnetic permeability as measured using a relationship between the composition and the magnetic permeability of the iron carbide product, which was obtained in advance;
• and
• regulating a parameter capable of changing the reduction ratio of the first-stage reaction process to adjust an iron carbide ratio obtained after the second-stage reaction process using a relationship that assuming a reaction time is set constant the iron carbide ratio obtained after the second-stage reaction process is decreased if the reduction ratio of the first-stage reaction process is decreased and the iron carbide ratio obtained after the second-stage reaction process is increased if the reduction ratio of the first-stage reaction process is increased.