一、引言钢铁产业是国民经济的重要基础产业,是实现工业化的支撑产业,是技术、资金、资源、能源密集型产业;钢铁业与许多行业有着密切的相关性,上游与采矿业、能源业、物流行业密切相连,下游与汽车、家电、造船、石油等行业密切相连。凡是工业化程度较高的国家,尤其是经济大国,如美国、德国、日本,钢铁业的发展在该国工业化的进程中都发挥了不可替代的作用。 I. INTRODUCTION The steel industry is an important basic industry of the national economy and a supportive industry for realizing industrialization. It is a technology, capital, resource and energy intensive industry. The steel industry has close correlation with many industries. The upstream and the mining industry, the energy industry , The logistics industry is closely linked with the downstream and automotive, home appliances, shipbuilding, oil and other industries are closely linked. The development of the steel industry in all countries with a high degree of industrialization, especially in the economic powers such as the United States, Germany and Japan, has played an irreplaceable role in the industrialization of the country.