scholarly journals Effects of Coke Reactivity and Reaction Temperature on Coke Gasification Behavior in the Blast Furnace

2001 ◽  
Vol 87 (7) ◽  
pp. 467-473 ◽  
Author(s):  
Shiro WATAKABE ◽  
Kanji TAKEDA
Keyword(s):  
Blast Furnace ◽  
Reaction Temperature ◽  
Coke Reactivity

Research on Metallurgical Reactivity Performance of Coke

2013 ◽  
Vol 395-396 ◽  
pp. 11-14
Author(s):  
Xin Yu Wang
Keyword(s):  
Blast Furnace ◽  
Reaction Temperature ◽  
Evaluation Indexes ◽  
Coke Reactivity ◽  
Different Temperatures ◽  
Solution Loss Reaction ◽  
Clear Statement ◽  
The Way

The coke reactivity is one of the major evaluation indexes of coke. But there is still no clear statement on the reaction temperature as well as the way of reaction. In order to have a further understanding on the process of coke solution loss reaction in the blast furnace, the present paper studied the coke reactivity at different temperatures and finally found out the reaction rules and constraints in different zones of the blast furnace.

Behaviors of Chlorine in Smelting Process of Blast Furnace

2011 ◽  
Vol 396-398 ◽  
pp. 152-156 ◽  
Author(s):  
Bin Sheng Hu ◽  
Yong Liang Gui ◽  
Hua Lou Guo ◽  
Chun Yan Song
Keyword(s):  
Blast Furnace ◽  
Low Temperature ◽  
Metal Cation ◽  
Iron Ore ◽  
Reduction Process ◽  
Normal Operation ◽  
Smelting Process ◽  
Coke Reactivity ◽  
Blast Furnace Gas ◽  
Organic Speciation

The existence forms of chlorine entered into blast furnace are chloride created by Cl- and metal cation or organic speciation absorbed in specular coal or structure macromolecule of coal. The chlorine entered into blast furnace merges with blast furnace gas in the form of HCl after conducted a series of chemical reactions. With the increasing of HCl content in blast furnace gas, the coke reactivity decreases and the coke post reaction strength increases, and the reduction process of iron ore is restrained and the low temperature reduction degradation property increases. However, the corrosion of gas pipeline and TRT blade is aggravated by the HCl in blast furnace gas, and then blast furnace gas conveying process and normal operation of TRT unit are affected.

Effect of coke reactivity and nut coke on blast furnace operation

2009 ◽  
Vol 36 (3) ◽  
pp. 222-229 ◽  
Author(s):  
A. Babich ◽  
D. Senk ◽  
H. W. Gudenau
Keyword(s):  
Blast Furnace ◽  
Furnace Operation ◽  
Blast Furnace Operation ◽  
Coke Reactivity ◽  
Nut Coke

Coke Reactivity under Blast Furnace Conditions and in the CSR/CRI Test

2009 ◽  
Vol 80 (6) ◽  
pp. 396-401 ◽  
Author(s):  
Maria Lundgren ◽  
Lena Sundqvist Ökvist ◽  
Bo Björkman
Keyword(s):  
Blast Furnace ◽  
Coke Reactivity

Coke Reactivity in Simulated Blast Furnace Shaft Conditions

2016 ◽  
Vol 47 (4) ◽  
pp. 2357-2370 ◽  
Author(s):  
Juho Haapakangas ◽  
Hannu Suopajärvi ◽  
Mikko Iljana ◽  
Antti Kemppainen ◽  
Olli Mattila ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Furnace Shaft ◽  
Coke Reactivity

scholarly journals A comprehensive investigation of the reaction behaviorial features of coke with different CRIs in the simulated cohesive zone of a blast furnace

PLoS ONE ◽  
2021 ◽  
Vol 16 (1) ◽  
pp. e0245124
Author(s):  
Qing Q. Lv ◽  
Yong S. Tian ◽  
Jun L. Zhou ◽  
Hua W. Ren ◽  
Guang H. Wang
Keyword(s):  
Blast Furnace ◽  
Cohesive Zone ◽  
Consumption Rate ◽  
Coke Quality ◽  
Temperature Zone ◽  
Comprehensive Investigation ◽  
Thermogravimetric Analyzer ◽  
Coke Reactivity ◽  
Reaction Characteristics ◽  
Carbon Molecules

The reaction characteristics and mechanism of coke with different coke reactivity indices (CRIs) in the high-temperature zone of a blast furnace should be fully understood to correctly evaluate the coke quality and optimize ironmaking. In this work, low-CRI coke (coke A) and high-CRI coke (coke B) were charged into a thermogravimetric analyzer to separately study their microstructural changes, gasification characteristics, and reaction mechanism under simulated cohesive zone conditions in a blast furnace. The results show that both coke A and coke B underwent pyrolysis, polycondensation, and graphitization during the heat treatment. The pyrolysis, polycondensation, gasification speed, and dissolution speed rates of coke B were higher than those of coke A. Direct and indirect reduction between sinter and coke occurred in the cohesive zone and had different stages. The consumption rate of coke B was faster than that of coke A during the coke–sinter reduction. The carbon molecules of coke A must absorb more energy to break away from the skeleton than those of coke B.

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