World steel production Energy efficiency of steelmaking China remarkably improved energy efficiency Energy consumption of steelmaking industries in Japan Crude
Direct-bond magnesia-chrome refractory andcarbon-containing refractory are important for thesteel furnace.The characteristic of these refractories was explained
Personal history Ariyama 1975: Graduate in chemical engineering at Graduate School of Waseda University 1975: Researcher of Technical Research Center, NKK (Nipp