The Scientific World Journal / 2013 / Article / Tab 1

Review Article

Advances in Energy Conservation of China Steel Industry

Table 1

Steel ratio coefficients of CSI during 1980–2010 (t-product/t-crude steel).

YearCoke-makingSinteringIron-makingOpen hearthBOFEAFSteel rolling

19800.7931.7271.0820.3200.4880.1920.765
19850.7061.6381.0120.2630.5210.2160.800
19900.6321.6020.9900.1980.5890.2130.811
19950.5801.6190.9920.1370.6670.1960.812
20000.4021.5170.9220.0080.8770.1150.890
20050.4041.3340.875NA0.8830.1170.920
20100.3341.2690.944NA0.9020.0980.945

NA is the abbreviation for “not available” due to the elimination of open hearth.