Coke Production Method

Abstract: Provided is a coke production method with which it is possible to suppress, with a simple procedure, coke strength deterioration due to the use of biomass, while said biomass is contained in blended coal serving as a coke raw material. In one aspect, the present invention provides a coke production method including a step for preparing blended coal containing coal and torrefied woody biomass, and a step for coking said blended coal, wherein: (1) the torrefied woody biomass has a volatile content of 25 mass% or less and has particle sizes such that the mass percentage of particles in the range of 0.10-mm plus sieve and 0.60-mm minus sieve is equal to or greater than 60 mass% according to sieving in conformity to the particle-size testing method defined in JIS M8801:2008; or (2) the torrefied woody biomass has a volatile content that is greater than 25 mass% and equal to or less than 40 mass% and has particle sizes such that the mass percentage of particles in the range of 0.10-mm plus sieve and 0.30-mm minus sieve is equal to or greater than 60 mass% according to said sieving.

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