Table 2.

Process energy consumptions of CSI during 1980–2010 (kgce/t-product).

Year	Coke-making	Sintering	Iron-making	Open hearth	BOF	EAF	Steel rolling
1980	217	104	556	200	67	378	266
1985	187	90	535	156	48	325	211
1990	185	79	526	123	38	303	187
1995	180	78	509	111	31	319	177
2000	159	70	465	140	29	274	119
2005	147	65	457	—a	36	201	89
2010	106	53	408	—	−0.2b	74c	62

^aNA is the abbreviation for “not available” due to the elimination of open hearth, ^bnegative value is due to the negative energy steel-making technology, ^cand the great decline of process energy consumption of EAF is because that China has adjusted the standard coal coefficient of electricity from 0.404 kgce/kWh to 0.1229 kgce/kWh since 2006.