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| Model for Economic Evaluation of Iron Production With Oxygen-Enriched and Pulverized Coal Injection |
| WANG Guang-wei,ZHANG Jian-liang,SHAO Jiu-gang, ZUO Hai-bin,QIU Jia-yong |
| School of Metallurgical and Ecological Engineering， University of Science and Technology Beijing， Beijing 100083, China |
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Abstract An economic evaluation model based on more regional heat and mass balance mathematical model was development. And the model was used to calculate the changes of operating parameters and the iron production cost with oxygen-enriched and pulverized coal injection. The results show that increasing oxygen-enriched rate and pulverized coal injection rate can effectively reduce the cost of iron production. The reduction depends on price of coke subtracting coal and oxygen price. The higher price of coke subtracting coal and the lower price of oxygen, the greater decrease price of iron production and the higher corresponding best oxygen-enriched level. Under the condition of present raw material and oxygen cost, the best oxygen-enriched level is about 15%-18% . Furthermore, the model could be applied to calculate the economic evaluation of different blast furnace process, providing a way to explore low-cost iron production method.
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Received: 26 March 2013
Published: 25 November 2013
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2013, Vol. 48 
