世界上把节约能源视为开发“第五能源”。自十九世纪以来,随着各国工业化程度的不断提高,社会经济高速发展,特别是近几年国内经济在改革开放以来的快速发展,人们对钢铁的需求量越来越大,到2008年钢铁消耗量达到4.5亿吨。在冶炼生铁时,焦碳、煤粉与 The world regards energy conservation as development “fifth energy”. Since the nineteenth century, with the continuous improvement of the industrialization in all countries and the rapid social and economic development, especially in recent years the rapid development of the domestic economy since the reform and opening up, the demand for steel has been growing. By 2008, the steel Consumption reached 450 million tons. When smelting pig iron, coke, coal and coal