The combustion process of pulverized coal injected into blast furnace involves a lot of physical and chemical reactions. Based on the combustion behaviors of pulverized coal, the conception of coal effective calorific...The combustion process of pulverized coal injected into blast furnace involves a lot of physical and chemical reactions. Based on the combustion behaviors of pulverized coal, the conception of coal effective calorific value representing the actual thermal energy provided for blast furnace was proposed. A cost performance evaluation model of coal injection was built up for the optimal selection of various kinds of coal based on effective calorific value. The model contains two indicators: coal effective calorific value which has eight sub-indicators and coal injection cost which includes four sub-indicators. In addition, the calculation principle and application of cost performance evaluation model in a Chinese large-scale iron and steel company were comprehensively introduced. The evaluation results finally confirm that this novel model is of great significance to the optimal selection of blast furnace pulverized coal.展开更多
China has long been a coal-based energyconsumption country.The coal's combustion process andits particle size are closely related.Because there are stilldifficulties in understanding and mastering the energyconsum...China has long been a coal-based energyconsumption country.The coal's combustion process andits particle size are closely related.Because there are stilldifficulties in understanding and mastering the energyconsumption of comminution,the economic fineness tobalance comminution and burning is mainly obtainedaccording to experience.With the increasingly wide andextensive use of coal,the energy consumption of coalcomminution has been paid more and more attention.Inthis paper,the research on energy consumption ofcomminution is analyzed and summarized to provide areference for the energy consumption of coalcomminution.展开更多
基金Project(51134008)supported by the National Natural Science Foundation of ChinaProject(2012CB720401)supported by the National Basic Research Program of China
文摘The combustion process of pulverized coal injected into blast furnace involves a lot of physical and chemical reactions. Based on the combustion behaviors of pulverized coal, the conception of coal effective calorific value representing the actual thermal energy provided for blast furnace was proposed. A cost performance evaluation model of coal injection was built up for the optimal selection of various kinds of coal based on effective calorific value. The model contains two indicators: coal effective calorific value which has eight sub-indicators and coal injection cost which includes four sub-indicators. In addition, the calculation principle and application of cost performance evaluation model in a Chinese large-scale iron and steel company were comprehensively introduced. The evaluation results finally confirm that this novel model is of great significance to the optimal selection of blast furnace pulverized coal.
文摘China has long been a coal-based energyconsumption country.The coal's combustion process andits particle size are closely related.Because there are stilldifficulties in understanding and mastering the energyconsumption of comminution,the economic fineness tobalance comminution and burning is mainly obtainedaccording to experience.With the increasingly wide andextensive use of coal,the energy consumption of coalcomminution has been paid more and more attention.Inthis paper,the research on energy consumption ofcomminution is analyzed and summarized to provide areference for the energy consumption of coalcomminution.
