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Erschienen in:

2018 | OriginalPaper | Buchkapitel

Analysis of Operational Parameters Affecting the Degree of Metallization of DRI in a Reduction Shaft of the COREX Process and Improvement Measures

verfasst von : Shengli Wu, Jiacong Zhang, Mingyin Kou, Bingjie Wen, Heng Zhou

Erschienen in: 9th International Symposium on High-Temperature Metallurgical Processing

Verlag: Springer International Publishing

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Abstract

The COREX process, which is considered to be able to replace the blast furnace, still has some gaps to reach the designed productivity. The metallization degree is regarded as one of the limitations of the COREX process. In the present work, several parameters affecting the metallization degree of direct reduced iron (DRI) are analysed by SPSS software (Statistical Product and Service Solution). Melting rate, oxidation degree of reducing gas, oxidation degree of top gas, top gas consumption per ton of burden, temperature of reducing gas, and burden distribution index are confirmed as the main factors affecting metallization degree. Based on this, a linear equation has been developed for predicting metallization degree. Additionally, improving the melter gasifier vault temperature appropriately, increasing the proportion of high volatile matter coal, and optimizing the type and particle size of iron ore and the pattern of burden distribution have been shown to improve the metallization degree.

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Vorheriges Kapitel Analysis of Microwave Drying Behavior of Nickel Laterite

Nächstes Kapitel Dechlorination of Zinc Oxide Dust by Microwave Roasting with RSM Optimization

Lemperle M, Maschlanka W (1993) Corex today and tomorrow. Metall Plant Technol Int 16(4):70–72

Kumar P, Gupta D, Naha T et al. (2006) Factors affecting fuel rate in Corex process. Ironmaking Steelmaking 33(4):293–298

Pal S, Lahiri A (2003) Mathematical model of COREX melter gasifier: Part I. Steady-state model. Metall Mater Trans B 34(1):103–114

Kumar P, Barman S, Reddy B et al (2009) Raw materials for COREX and their influence on furnace performance. Ironmaking Steelmaking 36(2):87–90

Qu Y, Zou Z, Xiao Y (2012) A comprehensive static model for COREX process. ISIJ Int 52(12):2186–2193

Wu S, Xu J, Yang S et al (2010) Basic characteristics of the shaft furnace of COREX smelting reduction process based on iron oxides reduction simulation. ISIJ Int 50(7):1032–1039

Hou Q, Samman M, Li J et al (2014) Modeling the gas-solid flow in the reduction shaft of COREX. ISIJ Int 54(8):1772–1780

Hou Q, Li J, Yu A (2015) CFD-DEM study of heat transfer in the reduction shaft of Corex. Steel research international 86(6):626–635

Wang N, Xie X, Zou Z et al (2008) Analysis of material and energy consumption of COREX C-3000. Steel Res Int 79(7):547–552

10.

Wu S, Wang L, Kou M et al (2017) Analysis of operational parameters affecting the sulfur content in hot metal of the COREX process. Metall Mater Trans B 48(1):276–285

11.

Guo Y, Xu W, Zhu J et al (2013) The burden structure and its consumption in the melter gasifier of the COREX process. Metall Mater Trans B 44(5):1078–1085

12.

Austin P, Nogami H, Yagi J (1998) Analysis of actual blast furnace operations and evaluation of static liquid holdup effects by the four fluid model. ISIJ Int 38(3):246–255

13.

Xu J, Wu S, Kou M et al (2013) Numerical analysis of the characteristics inside pre-reduction shaft furnace and its operation parameters optimization by using a three-dimensional full scale mathematical model. ISIJ Int 53(4):576–582

14.

Yi L, Huang Z, Jiang T (2013) Sticking of iron ore pellets during reduction with hydrogen and carbon monoxide mixtures: behavior and mechanism. Powder Techn 235:1001–1007

15.

Natsui S, Ueda S, Fan Z et al (2010) Characteristics of solid flow and stress distribution including asymmetric phenomena in blast furnace analyzed by discrete element method. ISIJ Int 50(2):207–214

16.

Kou M, Wu S, Du K et al (2013) DEM simulation of burden distribution in the upper part of COREX shaft furnace. ISIJ Int 53(6):1002–1009

17.

Wu S, Kou M, Xu J et al (2013) DEM simulation of particle size segregation behavior during charging into and discharging from a Paul-Wurth type hopper. Chem Eng Sci 99:314–323

Titel: Analysis of Operational Parameters Affecting the Degree of Metallization of DRI in a Reduction Shaft of the COREX Process and Improvement Measures
verfasst von: Shengli Wu
Jiacong Zhang
Mingyin Kou
Bingjie Wen
Heng Zhou
Verlag: Springer International Publishing
Buch: 9th International Symposium on High-Temperature Metallurgical Processing
Print ISBN: 978-3-319-72137-8

Electronic ISBN: 978-3-319-72138-5

Copyright-Jahr: 2018
DOI: https://doi.org/10.1007/978-3-319-72138-5_67

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