METALLURGICAL COKE PRODUCTION METHOD

摘要

Provided is a metallurgical coke production method which uses mixed coal to produce metallurgical coke having higher quality than in the past in terms of strength etc. as a result of accurately evaluating the softening/melting characteristics of coal used in the mixed coal by measuring the softening/melting characteristics of the coal in a simulation of the environment around the coal that has been softened and melted in a coke furnace. A method for producing coke by carbonizing mixed coal formed by mixing at least two types of coal and a caking additive, wherein the metallurgical coke production method is characterized in that predetermined amounts of the coals and caking additive which form the mixed coal are filled as a sample in a vessel, a material having through holes in the upper and lower surfaces thereof is disposed on the sample, the sample is heated at a predetermined heating speed while a constant load is applied to the material having through holes in the upper and lower surfaces thereof, the penetration depth of the sample that has penetrated the through holes is measured in advance, and the coals and caking additive which have a penetration depth that is higher than a predetermined control value are mixed at a particle size that is finer than a predetermined particle size.