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Journal articles on the topic 'COREX Process'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 September 2023

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1

Zhou, Xiao Lei, and Zhong Ning Du. "The Introduction of COREX Process Development." Advanced Materials Research 774-776 (September 2013): 1430–33. http://dx.doi.org/10.4028/www.scientific.net/amr.774-776.1430.

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The background and history of COREX smelting reduction was introduced. And the technological process was provided, including the main chemical reactions in COREX process. According to the operating state, COREX process characteristics and development direction were summarized.

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2

Assis, P. S., L. Guo, J. Fang, T. R. Mankhand, and C. F. C. de Assis. "Optimisation of COREX process." Ironmaking & Steelmaking 35, no. 4 (2008): 303–7. http://dx.doi.org/10.1179/174328108x269478.

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3

Fang, J. "Optimization of COREX process." Fuel and Energy Abstracts 37, no. 3 (1996): 212. http://dx.doi.org/10.1016/0140-6701(96)88969-7.

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4

Zhou, Xiao Lei, Zhe Shi, Gui Fang Zhang, and Zhong Ning Du. "Comparison of COREX and COSRI Process Technology Development." Applied Mechanics and Materials 678 (October 2014): 612–15. http://dx.doi.org/10.4028/www.scientific.net/amm.678.612.

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COREX and COSRI smelting reduction iron-making process could directly use coal as reductant. So it is necessary to contrast the development and technology of two kinds smelting reduction iron-making process. Due to lack of funds, COSRI smelting reduction iron-making process has not been fully developed. And the COREX has completed the transformation to the industrial production. But on the whole, COSRI has good prospects for development as COREX.

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5

Barman, S. C., P. Prachethan Kumar, L. Uddar, P. C. Mahapatra, V. R. Sekhar, and M. Ranjan. "Tuyere failure analysis in Corex process." Ironmaking & Steelmaking 37, no. 2 (2010): 98–102. http://dx.doi.org/10.1179/030192309x12549935902220.

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6

Kumar, P. Prachethan, D. Gupta, T. K. Naha, and S. S. Gupta. "Factors affecting fuel rate in Corex process." Ironmaking & Steelmaking 33, no. 4 (2006): 293–98. http://dx.doi.org/10.1179/174328106x101493.

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7

Qu, Yingxia, Zongshu Zou, and Yanping Xiao. "A Comprehensive Static Model for COREX Process." ISIJ International 52, no. 12 (2012): 2186–93. http://dx.doi.org/10.2355/isijinternational.52.2186.

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8

Sun, Ye, Ren Chen, Zuoliang Zhang, et al. "Numerical Simulation of the Raceway Zone in Melter Gasifier of COREX Process." Processes 7, no. 12 (2019): 867. http://dx.doi.org/10.3390/pr7120867.

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The physical and chemical processes in the raceway zone of the COREX melter–gasifier express are similar to those inside the blast furnace. Based on the research achievements on blast furnaces, the unsteady numerical simulation of a gas-solid two-phase in the raceway was carried out by using computational fluid software. The formation process of the raceway in the COREX melter–gasifier was simulated. The shape and size of the raceway were obtained. Then, the effect of gas flow on the depth and height of the raceway was analyzed in this paper.

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9

Song, Jiayuan, Zeyi Jiang, Cheng Bao, and Anjun Xu. "Comparison of Energy Consumption and CO2 Emission for Three Steel Production Routes—Integrated Steel Plant Equipped with Blast Furnace, Oxygen Blast Furnace or COREX." Metals 9, no. 3 (2019): 364. http://dx.doi.org/10.3390/met9030364.

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High CO2 emissions and energy consumption have greatly restricted the development of China’s iron and steel industry. Two alternative ironmaking processes, top gas recycling-oxygen blast furnace (TGR-OBF) and COREX®, can reduce CO2 emissions and coking coal consumption in the steel industry when compared with a conventional blast furnace (BF). To obtain parameters on the material flow of these processes, two static process models for TGR-OBF and COREX were established. Combining the operating data from the Jingtang steel plant with established static process models, this research presents a de

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10

Wang, Xing Juan, Ran Liu, and Jue Fang. "Experimental Study on Sticking Behavior of Fluidized Bed in Reduction Process." Advanced Materials Research 482-484 (February 2012): 1354–57. http://dx.doi.org/10.4028/www.scientific.net/amr.482-484.1354.

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It is a good way that the fluidized bed is used as a substitute for reduction shaft in Corex process. Which can reduce energy consumption, environmental pollution and construction costs further, and also improve the competitiveness of Corex and blast furnace. At present, the sticking problem is present in iron ore reduction process and interrupts the reduction process, it has become a major obstacle on the development of fluidized bed. In this paper, a visualization hot model of fluidized bed is introduced. The influence factors on sticking behavior were analyzed from reduction temperature, ga

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11

Shi, Benjing, Deqing Zhu, Jian Pan, and Zhaocai Wang. "Research on the Preparation of Sinter for COREX Reduction Process by Varying Basicity and MgO Content." Minerals 12, no. 2 (2022): 207. http://dx.doi.org/10.3390/min12020207.

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Sinter has been introduced into the composite burden of the COREX ironmaking process in China to lower the material cost, but the proportion is limited due to its poor low-temperature reduction degradation performance in the shaft furnace. This work dealt with the preparation of sinter for the COREX process by varying the MgO content and basicity. Their effects on the sintering and reduction properties under reducing condition simulating COREX shaft furnace were investigated, and the changes in the mineralogy of sinter with different MgO content and basicity were explored. The results showed t

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12

Zhou, X., Z. Shi, G. Zhang, Y. Ding, and X. Yang. "Operating line for COREX smelting reduction ironmaking process." Materials Research Innovations 19, sup8 (2015): S8–99—S8–101. http://dx.doi.org/10.1179/1432891715z.0000000001630.

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13

Kadrolkar, Ameya, S. K. Roy, and P. K. Sen. "Minimization of Exergy Losses in the COREX Process." Metallurgical and Materials Transactions B 43, no. 1 (2011): 173–85. http://dx.doi.org/10.1007/s11663-011-9586-2.

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14

Zhou, Heng, Yifan Hu, Bingjie Wen, Shengli Wu, Mingyin Kou, and Yiwa Luo. "BP neural network prediction for Si and S contents in hot metal of COREX process based on mathematical analysis and Deng’s correlation." Metallurgical Research & Technology 118, no. 5 (2021): 514. http://dx.doi.org/10.1051/metal/2021073.

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In COREX operation, the Si and S contents in hot metal are relatively high and easy-fluctuating, which is one of the problems affecting the practical operation. Accurate predictions of Si and S contents can provide theoretical references for stabilizing the fluctuations and decreasing the contents of Si and S in hot metal. Therefore, the present work established the prediction model of Si and S contents in hot metal in COREX based on BP neural network. The results show that the root-mean-square errors between the predicted value and actual value for Si and S are 0.098 and 0.0037, respectively.

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15

Zhu, Deqing, Jianlei Chou, Benjing Shi, and Jian Pan. "Influence of MgO on Low Temperature Reduction and Mineralogical Changes of Sinter in Simulated COREX Shaft Furnace Reducing Conditions." Minerals 9, no. 5 (2019): 272. http://dx.doi.org/10.3390/min9050272.

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COREX (Coal-Reduction-Extreme) smelting reduction process provides a sustainable developing way for ironmaking industry, but the sources of iron ore materials restrict its development in China. Meanwhile, the application of sinter, which is marked by low manufacture cost and overcapacity in China, to COREX furnace faced proportion limitation due to its worse low temperature reduction degradation performance. This work explored the influence of MgO content on the low-temperature (550 °C) reduction of sinter in reducing conditions simulating COREX shaft furnace. The mineralogical change of sinte

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16

Vasiya, Vipulkumar, and Chandresh Solanki. "An Experimental Study on Corex (Steel) Slag Reinforced with Terrazyme Treated Clay for Improvement of Soft Soil." Trends in Sciences 19, no. 15 (2022): 5605. http://dx.doi.org/10.48048/tis.2022.5605.

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Stability and settlement problems are common for foundations constructed on soft soils. In major parts of the world, ground improvement techniques have been used to mitigate these challenges. This research aims to stabilize the soft soils using corex steel slag blended with terrazyme treated clay. The corex steel slag is an industrial waste formed during the extraction of steel from ores through the corex process. The corex slag of sand size in the form of columns have been used to improve the load-carrying capacity of the soft soils and to control the settlement. To increase the stiffness of

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17

Pan, Gang, Xun Liang Liu, and Zhi Wen. "Numerical Simulation of Gas Flow Field in the Moving Bed of Corex Melter-Gasifier." Advanced Materials Research 228-229 (April 2011): 930–36. http://dx.doi.org/10.4028/www.scientific.net/amr.228-229.930.

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The Corex process, which consists of the upper reduction shaft and the melter-gasifier is an alternative ironmaking process to the blast furnace. The Corex melter-gasifier is a countercurrent reactor to produce liquid iron. Directly reduced iron(DRI), noncoking coal, and other additives are charged to the melter-gasifier at their respective temperature, and O2 is blown through the tuyeres. Moving bed of melter-gasifier is an important zone for reduction of iron oxide and melting of DRI, in which lump coal is a function as skeleton of moving bed replacing coke. A two-dimensional mathematical mo

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18

Prachethan Kumar, P., L. M. Garg, and S. S. Gupta. "Modelling of Corex process for optimisation of operational parameters." Ironmaking & Steelmaking 33, no. 1 (2006): 29–33. http://dx.doi.org/10.1179/174328106x80037.

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19

Luo, Zhiguo, Yang You, Haifeng Li, Heng Zhou, and Zongshu Zou. "Experimental Study on Charging Process in the COREX Melter Gasifier." Metallurgical and Materials Transactions B 49, no. 4 (2018): 1740–49. http://dx.doi.org/10.1007/s11663-018-1261-4.

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20

Zhao, Chen Xi, Jin Wu Xu, Min Li, and Jian Hong Yang. "Time Delay Estimation on COREX Parameters Based on Dynamic Time Warping Method." Applied Mechanics and Materials 241-244 (December 2012): 1168–75. http://dx.doi.org/10.4028/www.scientific.net/amm.241-244.1168.

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In order to solve the time delay problem between the process parameters and the quality indicators in the modeling processes, a method of time delay estimation on COREX parameters is proposed based on Dynamic Time Warping (DTW) algorithm. The method solves the problem existing in the conventional methods which demand the number of calculating sample to be same. Taking the real field data from Baosteel COREX-3000 as the research object, the DTW distances between the process parameters and the quality indicators are calculated, and then the delay time is estimated. The real field data are used f

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21

Kulkarni, Kedar M., and Nilesh R. Patil. "Analysis of Expansion Joints for Gas Duct Movement in Corex Process." IARJSET 6, no. 4 (2019): 66–70. http://dx.doi.org/10.17148/iarjset.2019.6411.

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22

Srishilan, C., Anand Vivek, and Ajay Kumar Shukla. "Operating Line Prediction of COREX Iron-making Process Using RIST Diagram." ISIJ International 60, no. 4 (2020): 656–61. http://dx.doi.org/10.2355/isijinternational.isijint-2019-429.

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23

Guo, Y. L., W. R. Xu, J. M. Zhu, and J. Y. Zhang. "Influence of operational parameters on hot metal temperature in Corex process." Ironmaking & Steelmaking 40, no. 7 (2013): 545–50. http://dx.doi.org/10.1179/1743281212y.0000000078.

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24

Sen, P., C. Biswas, P. Das, and G. G. Roy. "Optimisation of coal rate and carbon dioxide emissions in Corex process." Mineral Processing and Extractive Metallurgy 124, no. 3 (2015): 175–83. http://dx.doi.org/10.1179/1743285515y.0000000008.

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25

Wu, Sheng-li, Ming-yin Kou, Jing Sun, Wei Shen, and Kai-ping Du. "Analysis of Operation Parameters Affecting Hot Metal Temperature in COREX Process." steel research international 85, no. 11 (2014): 1552–59. http://dx.doi.org/10.1002/srin.201300415.

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26

Barman, S. C., K. P. Mrunmaya, and M. Ranjan. "Mathematical Model Development of Raceway Parameters and Their Effects on Corex Process." Journal of Iron and Steel Research International 18, no. 5 (2011): 20–24. http://dx.doi.org/10.1016/s1006-706x(11)60059-9.

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27

Koria, S. C., and M. K. Barui. "Influence of post-combustion heat transfer efficiency on fuel reduction in COREX process." Ironmaking & Steelmaking 27, no. 5 (2000): 348–54. http://dx.doi.org/10.1179/030192300677642.

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28

Liu, Q. H., K. Wu, Y. She, J. Z. Zhang, and X. Liu. "Investigation of coal properties to avoid lump coal fines generation in COREX process." Ironmaking & Steelmaking 42, no. 6 (2014): 450–55. http://dx.doi.org/10.1179/1743281214y.0000000249.

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29

Zhan, Wen-long, Keng Wu, Zhi-jun He, Qi-hang Liu, and Xiao-juan Wu. "Estimation of Energy Consumption in COREX Process Using a Modified Rist Operating Diagram." Journal of Iron and Steel Research International 22, no. 12 (2015): 1078–84. http://dx.doi.org/10.1016/s1006-706x(15)30115-1.

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30

Shen, Wei, Sheng-li Wu, Ming-yin Kou, Kai-ping Du, and Ying Sun. "Establishment of a Static Model Based on Measured Heat Loss for COREX Process." Journal of Iron and Steel Research International 22, no. 3 (2015): 200–206. http://dx.doi.org/10.1016/s1006-706x(15)60030-9.

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31

Xu, Runsheng, Jianliang Zhang, Guangwei Wang, et al. "Isothermal kinetic analysis on fast pyrolysis of lump coal used in COREX process." Journal of Thermal Analysis and Calorimetry 123, no. 1 (2015): 773–83. http://dx.doi.org/10.1007/s10973-015-4972-7.

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32

Shen, W., S. L. Wu, K. P. Du, M. Y. Kou, and Y. Sun. "Measurements of heat loss and its distribution for the COREX-3000 ironmaking process." Metallurgical Research & Technology 111, no. 2 (2014): 75–84. http://dx.doi.org/10.1051/metal/2014017.

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33

Wang, Laixin, Shengli Wu, Mingyin Kou, Binbin Du, Yanan Lu, and Kai Gu. "Improving the Desulphurization in COREX Process by Adjusting the Hot Metal Chemical Composition." Metallurgical and Materials Transactions B 49, no. 1 (2017): 89–97. http://dx.doi.org/10.1007/s11663-017-1111-9.

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34

Pan, Gang, Xun Liang Liu, Gan Wang, and Zhi Wen. "Numerical Simulation of Heat and Mass Transfer of Lump Coal Falling in the Freeboard Zone of COREX Melter-Gasifier." Advanced Materials Research 455-456 (January 2012): 74–79. http://dx.doi.org/10.4028/www.scientific.net/amr.455-456.74.

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. A one-dimensional mathematical model was developed for describing heat and mass transfer process of lump coal falling in the freeboard zone of COREX melter-gasifier. The temperature distribution, law of moisture evaporation and removal of volatile of lump coal were obtained. Further more, the effects of operating parameters on heat and mass transfer phenomena of lump coal were studied.

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35

Sahoo, R., and D. Roach. "Degradation behaviour of weathered coal during handling for the COREX process of iron making." Powder Technology 152, no. 1-3 (2005): 1–8. http://dx.doi.org/10.1016/j.powtec.2005.02.001.

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36

You, Yang, Zhiguo Luo, Zongshu Zou, and Runyu Yang. "Numerical study on mixed charging process and gas-solid flow in COREX melter gasifier." Powder Technology 361 (February 2020): 274–82. http://dx.doi.org/10.1016/j.powtec.2019.08.040.

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37

Guo, Yanling, Wanren Xu, Jinming Zhu, and Jieyu Zhang. "The Burden Structure and Its Consumption in the Melter Gasifier of the Corex Process." Metallurgical and Materials Transactions B 44, no. 5 (2013): 1078–85. http://dx.doi.org/10.1007/s11663-013-9867-z.

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38

Wu, Shengli, Laixin Wang, Yanan Lu, and Kai Gu. "Improving the Desulphurization in COREX-3000 Process by the Optimization of Chemical Compositions of Slag." ISIJ International 58, no. 11 (2018): 2025–31. http://dx.doi.org/10.2355/isijinternational.isijint-2018-427.

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39

Yao, Shun, Bo Song, Shengli Wu, Mingyin Kou, Yifan Hu, and Heng Zhou. "Influence of top gas recycling technology on operation parameters and CO2 emission of COREX process." Ironmaking & Steelmaking 48, no. 6 (2021): 693–702. http://dx.doi.org/10.1080/03019233.2021.1892398.

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40

You, Yang, Yaoyu Li, Zhiguo Luo, Haifeng Li, Zongshu Zou, and Runyu Yang. "Investigating the effect of particle shape on the charging process in melter gasifiers in COREX." Powder Technology 351 (June 2019): 305–13. http://dx.doi.org/10.1016/j.powtec.2019.04.040.

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41

Ziebik, Andrzej, Krzysztof Lampert, and Marcin Szega. "Energy analysis of a blast-furnace system operating with the Corex process and CO2 removal." Energy 33, no. 2 (2008): 199–205. http://dx.doi.org/10.1016/j.energy.2007.09.003.

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42

Zhang, Shengfu, Feng Zhu, Chenguang Bai, Liangying Wen, and Chong Zou. "Thermal behavior and kinetics of the pyrolysis of the coal used in the COREX process." Journal of Analytical and Applied Pyrolysis 104 (November 2013): 660–66. http://dx.doi.org/10.1016/j.jaap.2013.04.014.

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43

Wu, Shengli, Laixin Wang, Mingyin Kou, Yujue Wang, and Jiacong Zhang. "Analysis of Operational Parameters Affecting the Sulfur Content in Hot Metal of the COREX Process." Metallurgical and Materials Transactions B 48, no. 1 (2016): 276–85. http://dx.doi.org/10.1007/s11663-016-0810-y.

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44

Sun, Ye, Guo Xi Wu, Ren Chen, Li Na Sun, and Hai Feng Li. "Simulation on the Burden Distribution by DEM." Applied Mechanics and Materials 313-314 (March 2013): 1078–81. http://dx.doi.org/10.4028/www.scientific.net/amm.313-314.1078.

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In this paper, a numerical simulation model based on discrete element method (DEM) has been developed to analyze the burden distribution in the Melter gasifier of COREX process. The burden trajectory, the location and the burden surface profile are analyzed in the top charging of melter gasifier. The distribution of ore and coke and the porosity in the radial direction are given under the different charging mode. The results can be used to optimize the charging patterns in order to obtain the reasonable gas distribution.

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45

Han, Li Hao, Zhi Guo Luo, Xiao Lei Zhou, et al. "Definition of Cohesive Zone in COREX Melter Gasifier Using Image Processing Method." Advanced Materials Research 295-297 (July 2011): 2057–65. http://dx.doi.org/10.4028/www.scientific.net/amr.295-297.2057.

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The cohesive zone plays very important role in the operation of COREX melter gasifier, up to now, definition of the cohesive boundary has always been a challenging task. In this paper, a two-dimensional hot model of melter gasifier, in which paraffin and corn are used to simulate DRI, coke and lump coal respectively, has been established to study the cohesive boundary in this paper. While the whole experimental process is recorded by the high-speed camera, the image processing method is put forward to define the cohesive boundary quantificationally.

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46

Zhang, Li Hua, Jia Xin Fan, and Sheng Li Wu. "Modes of Occurrence of Trace Elements (Na, K, Fe, Si) in Coal Used for COREX Process." Advanced Materials Research 391-392 (December 2011): 81–85. http://dx.doi.org/10.4028/www.scientific.net/amr.391-392.81.

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In this paper, the modes of occurrence of the trace elements of Na, K, Fe and Si in SX-Coal and SD-Coal, which were used for COREX process, were analyzed. The coal was treated by wet digestion method and then the content of trace elements was analyzed. After that, the modes of occurrence of the elements were studied by sequential extraction procedure method and analyzed by ICP-OES. The results showed that the content of Na element is the highest and the content of K and Si elements is very low among the four elements in both kinds of coal. Na and K elements mainly exist in the mode of residue

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47

Sun, Ye, Ren Chen, Zuoliang Zhnag, et al. "Simulation on the combustion in the raceway zone of COREX melter gasifier." Thermal Science, no. 00 (2020): 249. http://dx.doi.org/10.2298/tsci200521249s.

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Two dimensional numerical simulation of the particle motion and combustion behavior in the raceway has been done to analyze the gas flow field, pressure field, temperature field, distribution of gas composition, as well as the effect of coke mass flow rate and blowing gas temperature on the maximum temperature in the raceway zone. The results show that the temperature in the cavity reaches the maximum in the upper part of the cavity region, and the maximum value is above 3000 K. During the combustion process, the concentration of O2 decreases, and the concentration of CO increases. The highest

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48

Luo, Zhi Guo, Li Hao Han, Xiao Lei, Zhan Xia Di, and Jun Jie Sun. "Research on Defining Regional Boundary of the COREX Melter Gasifier by Using Image Processing." Advanced Materials Research 455-456 (January 2012): 1140–44. http://dx.doi.org/10.4028/www.scientific.net/amr.455-456.1140.

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In this paper, a two-dimensional hot model of melter gasifier, in which paraffin and corn are used to simulate DRI, coke and lump coal respectively, has been established to study the regional boundary in this paper. While the whole experimental process is recorded by the high-speed camera, the image processing method is put forward to define each regional boundary. By means of this method, the boundary of raceway, cohesive zone can be obtained quantificationally.

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49

Pan, Dunxiang, Huizhong Zhao, Han Zhang, Pengda Zhao, Yichong Li, and Qingfeng Zou. "Corrosion mechanism of spray refractory in COREX slag with varying basicity." Ceramics International 45, no. 18 (2019): 24398–404. http://dx.doi.org/10.1016/j.ceramint.2019.08.161.

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50

Wu, Shengli, Jian Xu, Shidong Yang, Qi Zhou, and Lihua Zhang. "Basic Characteristics of the Shaft Furnace of COREX® Smelting Reduction Process Based on Iron Oxides Reduction Simulation." ISIJ International 50, no. 7 (2010): 1032–39. http://dx.doi.org/10.2355/isijinternational.50.1032.

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