Measurement of Utilization Rate of Injected Pulverized Coal of Baotou Steel BF
To measure the actual utilization rate of pulverized coal injected to Baotou Steel BF,transmitted light polarization microscope is adopted to qualitatively and quantitatively analyze the carbon category of the dust collected by the gravity pre-cipitator,cyclone and bag filter during operation of Baotou Steel BF.The analysis results reveal that the upper and lower uti-lization rate limit of injected pulverized coal of No.3 BF is 89.03％and 79.46％respectively,and that of No.4 BF is 91.51％and 84.14％respectively.It is believed that the pulverized coal injected to No.3 and No.4 BF come from the same series,therefore,the utilization rate of injected pulverized coal can be improved by stabilizing the pulverized coal particle size,optimizing the oxygen-enrich blasting and improving the strength of charged coke.
blast furnacecoal rateutilization rate of injected pulverized coaldust collected by dust collectorunburnt pul-verized coal
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