Performance Evaluation of an Ironmaking System with Environmental Costs

Table 1

Exergoeconomic cost of the ironmaking system.

Fuel (CNY/t molten iron)			Product
Item	Cost	%	Item	Cost	%
Pellets	306.95	17.56	Molten iron	1508.83	86.33
Sinter	806.5	46.15	BF gas	24.84	1.42
Coke	449.86	25.74	Slag	209.33	11.98
Lump ore	14.46	0.83	Scrap iron	3.6	0.21
Oxygen	11.28	0.64	Residual heat water	0.25	0.014
Pulverized coal	81.9	4.69	TRT electricity	0.8	0.046
BF gas	10.9	0.63	Total	1747.65	100
Coke oven gas	3.2	0.18
Low-pressure steam	2.31	0.13
Nitrogen	6.77	0.39
Electricity	17.9	1.02
Industrial water	35.62	2.04
Total	1747.65	100