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Energy-saving Technologies of EAF Steelmaking in China

Yonggang Pang, JI Zhi-jun

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Abstract

In recent years, the production of eaf steel increases unceasingly in China, but because of the high cost of the scrap steel and electricity, the ratio of eaf steel to crude steel falls to about 10% after 2008, far lower than average level of about 30% in the world. The energy composition of EAF steelmaking process was analyzed, which is constituted by electric energy and auxiliary energy; the energy-saving technologies of EAF steelmaking in China was introduced, including five aspects as follows: large-scale capacity of EAF, EAF burden structure optimization technology, energy-saving technology, oxygen strengthening technology and waste heat utilization technology.

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What this paper is about

In recent years, the production of eaf steel increases unceasingly in China, but because of the high cost of the scrap steel and electricity, the ratio of eaf steel to crude steel falls to about 10% after 2008, far lower than average level of about 30% in the world. The energy composition of EAF steelmaking process was analyzed, which is constituted by electric energy and auxiliary energy; the energy-saving technologies of EAF steelmaking in China was introduced, including five aspects as follows: large-scale capacity of EAF, EAF burden structure optimization technology, energy-saving technology, oxygen strengthening technology and waste heat utilization technology.

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Available abstract

In recent years, the production of eaf steel increases unceasingly in China, but because of the high cost of the scrap steel and electricity, the ratio of eaf steel to crude steel falls to about 10% after 2008, far lower than average level of about 30% in the world. The energy composition of EAF steelmaking process was analyzed, which is constituted by electric energy and auxiliary energy; the energy-saving technologies of EAF steelmaking in China was introduced, including five aspects as follows: large-scale capacity of EAF, EAF burden structure optimization technology, energy-saving technology, oxygen strengthening technology and waste heat utilization technology.

Key concepts: Steelmaking, Scrap, Engineering, Waste management, Electricity, Environmental science, Metallurgy, Mechanical engineering

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