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| Investigation on combustion conditions of coal injection into blast furnace by petrographical microanalysis of dustXINGTAI IRON STEEL CORP.,LTD |
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Received:September 30, 2016
Revised:October 12, 2016
Accepted:October 12, 2016
Published Online:April 06, 2017
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| DOI： |
| KeyWord:combustion;rate, petrographical;microanalysis, dust, unburned;pulverized coal |
| Author | Institution |
| Ma Baoliang |
a. School of Materials Science and Metallurgy, Northeastern University;b.Xingtai Iron&steel Corp.,LTD |
| Zhang Yuzhu |
College of Metallurgy and Energy, North China University of Science and Technology |
| Xu Ying |
College of Material Science and Engineering, North China University of Science and Technology |
| Cai Yanqing |
College of Material Science and Engineering, North China University of Science and Technology |
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| Abstract: |
| Taking the dust discharge from M steel plant as example, the different structure forms of unburned pulverized coal and coke in dust were investigated by petrographical microanalysis. Then, the mass fractions of unburned pulverized coal and coke were measured, and the utilization rate of pulverized coal was calculated. Meanwhile, it is concluded that the pulverized coal utilizations of M and N steel plant all belong to the good level, after comparing the petrographical microanalysis results of M steel plant with N steel plant. Thus, the analysis of unburned pulverized coal and coke in dust by petrographical microanalysis provide a new method to judge the utilization of pulverized coal in the blast furnace. |
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