Abstract: Taking a typical iron and steel production enterprise as the research object， based on the practical production data of enterprise， substance metabolism model was constructed by using material flow analysis method (MFA). According to energy use， resource use and pollutant emissions indexes， resources and energy consumption and smoke and dust emissions situation of the iron and steel production enterprises were quantitatively described. The results showed that for enterprises， the total resource consumption per ton of steel of the blast furnace converter’s long process is 208.6t. Fuel consumption is 93.9% of the total energy consumption. The smoke and dust emission per ton of steel is 648.08g， of which sintering and iron-making process make the biggest contribution and account for 45 percent and 36 percent， respectively. The total resource consumption of electric furnace’s short process is 1.31t， of which electrical energy consumption is 96.7% of the total energy consumption and the smoke and dust emissions per ton of steel is 67g. As for processes， the emissions of sintering， coking and iron-making process are 222.50g/t sinter， 118.20g/t coke and 245.27g/t iron. Accordingly the directional advices on energy-saving and emission reduction in enterprises and the adjustment of industrial structure are put forward to reduce the pressure on the environment and realize the sustainable development of iron and steel enterprises.

Key words: iron and steel production enterprise, material flow analysis (MFA) method, resources and energy consumption, smoke and dust emission, energy-saving and emission reduction