EFFECT OF FUEL CHARACTERISTICS ON SINTERING AND FLUE GAS EMISSION OF IRON ORE

YI Zhengming; QIN Jiazhuo; LIU Qiang; DU Dong; ZHANG Dongsheng

doi:10.13205/j.hjgc.202203010

Volume 40 Issue 3

Mar. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2022 > 40(3): 59-65

YI Zhengming, QIN Jiazhuo, LIU Qiang, DU Dong, ZHANG Dongsheng. EFFECT OF FUEL CHARACTERISTICS ON SINTERING AND FLUE GAS EMISSION OF IRON ORE[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(3): 59-65. doi: 10.13205/j.hjgc.202203010

Citation:

YI Zhengming, QIN Jiazhuo, LIU Qiang, DU Dong, ZHANG Dongsheng. EFFECT OF FUEL CHARACTERISTICS ON SINTERING AND FLUE GAS EMISSION OF IRON ORE[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(3): 59-65. doi: 10.13205/j.hjgc.202203010

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EFFECT OF FUEL CHARACTERISTICS ON SINTERING AND FLUE GAS EMISSION OF IRON ORE

doi: 10.13205/j.hjgc.202203010

1. State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China;
2. National-Provincial Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China;
3. Shuicheng Iron&Steel Group Co., Ltd, Liupanshui 553000, China

Received Date: 2021-05-20
Available Online: 2022-07-07

Abstract

Abstract

From the view of solid combustion, the influence of fuel proportioning and particle size on the temperature of combustion layer and sintering atmosphere were studied by sintering pot experiment. The results showed that as the proportion of pulverized coal in the fuel increased from 0 to 100%, the sintering speed and utilization coefficient increased to 4.32 mm/min and 0.13 t/(m²·h), respectively. The sinter drum strength first increased and then decreased, and the drum index reached the peak value of 58.4%, when the pulverized coal ratio was 25%. The NO_x concentration in the flue gas was increased by 28.34 mg/m³, and the CO content was increased by 0.72%. CO promoted the reduction reaction of NO and inhibited the formation of NO_x. Under full coal condition, with the percentage of fuel with particle size less than 1 mm reduced from 50% to 10%, NO_x in flue gas decreased by 51.33 mg/m³; increasing the fuel particle size could reduce the concentration of NO_x emission in flue gas. While the sintering time was prolonged, the total NO_x emission was increased. The research results could provide theoretical guidance and reference for sintering fuel selection and the reduction of flue gas emission.
- NO_x emission,
- solid fuel,
- combustion behavior,
- cold strength of sinter,
- CO

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References(23)

References

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