A modified model for calculating Theoretical Flame Temperature in blast furnace and its application

Zhu, Li; Wu, Keng; Zhang, Er-hua; She, Yuan; Wenlong, Zhan; Liu, Qihang

doi:10.1016/s1006-706x(15)60002-4

Cited by 3 publications

(2 citation statements)

References 10 publications

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“…The uniformity and activity of the combustion zone during the sampling period are obtained by averaging the uniformity and activity of each region, the formulas are (8) and (9), which are shown in Fig. 7.…”

Section: Combustion Zone Uniformity and Activitymentioning

confidence: 99%

“…6) (2) The theoretical combustion temperature drops after BF coal injection. 7,8) Most of the PCI into the BF is burned out in the raceway, the higher combustion rate of PC is the necessary condition for improving the operation ratio of PCI. Therefore, the real-time monitoring of the raceway can feedback the PC digestion to the BF operators in time, which is conducive to the operator's grasp of the coal injection system and time, and solve the problem of large inertia and large time lag of the BF.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fuzzy Comprehensive Evaluation Model of Pulverized Coal Digestibility in Blast Furnace Raceway Based on the Fusion of Subjective and Objective Evidence

Cui

Yao

et al. 2019

ISIJ Int.

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In the blast furnace smelting process, the pulverized coal digestibility of the tuyere is an important indicator for studying the combustion status of tuyere. It is the basis for decision making and improvement of pulverized coal injection ratio. A correct and effective assessment is of great significance. In this paper, a fuzzy comprehensive evaluation model based on the fusion of subjective and objective evidence is proposed, which integrates the pulverized coal burnout rate, temperature gradient, combustion zone activity, and uniformity. Pulverized coal burnout rate in the raceway is calculated by the mathematical model. The temperature gradient is obtained by digitizing the tuyere image. The activity and uniformity of the combustion zone are defined by the required temperature for the active state of the blast furnace hearth and average temperature, respectively. Through the expert knowledge and principal component analysis to determine the weights of various indicators, a more accurate and comprehensive model of the pulverized coal digestibility of the raceway in the blast furnace is constructed. The evaluation model is applied to make the application analysis of actual blast furnace off-line data, and the evaluation results are consistent with the actual operation data analysis.

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Section: Combustion Zone Uniformity and Activitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fuzzy Comprehensive Evaluation Model of Pulverized Coal Digestibility in Blast Furnace Raceway Based on the Fusion of Subjective and Objective Evidence

Cui

Yao

et al. 2019

ISIJ Int.

View full text Add to dashboard Cite

show abstract

Phosphorus Removal Properties of the Fe–C–Si–Mn–P–S Metallic Melts Based on the Atom–Molecule Coexistence Theory: Mutual Verification by Industrial and Laboratorial Experiments

Sun,

Yang,

Yang

et al. 2024

Metall Mater Trans B

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Technological advancements in evaluating the performance of the pulverized coal injection through tuyeres in blast furnace

Agrawal

Tiwari

Kumar

et al. 2020

Metall. Res. Technol.

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The pulverized coal injection (PCI) is pursued to reduce the hot metal production cost by replacing the expensive metallurgical coke with the non-coking coal. Increasing the PCI rate causes various difficulties in the blast furnace (BF) operation. In the present work, an attempt is made to review the various aspects of PC injection in BF such as the challenges with increasing the PCI rate and modifications in the injection system to circumvent the concerns related to higher PCI rate. Various methods for detecting the tuyere blockage and failure caused due to the high PCI rate are elaborated. The factors influencing the combustion of coal in front of tuyeres have been discussed and their impact in the replacement ratio has been discussed. Further, recommendations are made to improve the coal combustibility in front of tuyeres.

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A modified model for calculating Theoretical Flame Temperature in blast furnace and its application

Cited by 3 publications

References 10 publications

Fuzzy Comprehensive Evaluation Model of Pulverized Coal Digestibility in Blast Furnace Raceway Based on the Fusion of Subjective and Objective Evidence

Fuzzy Comprehensive Evaluation Model of Pulverized Coal Digestibility in Blast Furnace Raceway Based on the Fusion of Subjective and Objective Evidence

Phosphorus Removal Properties of the Fe–C–Si–Mn–P–S Metallic Melts Based on the Atom–Molecule Coexistence Theory: Mutual Verification by Industrial and Laboratorial Experiments

Technological advancements in evaluating the performance of the pulverized coal injection through tuyeres in blast furnace

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