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1 Introduction. The electric arc furnace (EAF) constitutes the main process in scrap-based steelmaking. [] Invented in 1889 by Paul Héroult, it was initially used mostly for production of special steels, but established itself …
The blast furnace uses iron ore as the iron-bearing raw materials, coke and pulverised coal as reducing agents and lime or limestone as fluxing agents. The main objective of blast furnace …
The three-dimensional model was developed according to number 4 of the main trough of blast furnace at China Steel Co. (CSC BF4). The k-ε equations and volume of fluid (VOF) were used for describing the turbulent flow at the impinging zone of trough, indicating fluids of liquid iron, molten slag, and air in the governing equation, …
DOI: 10.1016/j.fuel.2022.124368 Corpus ID: 248468340; Numerical modeling and analysis of hydrogen blast furnace ironmaking process @article{Li2022NumericalMA, title={Numerical modeling and analysis of hydrogen blast furnace ironmaking process}, author={Jun Yu Li and Shibo Kuang and Lulu Jiao and Lingling Liu and Ruiping Zou and …
The blast furnace-converter process still plays a dominant role in China's iron and steel industry, which consumes a lot of coke and releases 1.8 t/ton-2.2 t/ton of CO 2. Therefore, the transformation of energy conservation and emission reduction are very critical for the iron and steel industry with huge output and energy consumption.
The BFS used is the water-quenched slag that has been cooled by water after being discharged from the blast furnace. Table 1 lists the main chemical composition of BFS, and its binary basicity is about 1.2. The proximate and ultimate analysis results of LG and ST are presented in Table 2.The chemical formula and structure of LG (CAS No. …
Yang et al. established a multi-objective optimization model for the blast furnace ironmaking process based on the conservation of energy and matter, with the energy consumption, cost, and CO 2 emission of blast furnace ironmaking as the objective function, and blast furnace batching, iron quality parameters, and production indexes …
A transient 3D CFD model is solved to investigate the features of the complex flow in a blast furnace trough. Hot metal, slag, and air are considered as …
The ironmaking blast furnace is regarded as one of the biggest and most complex industrial reactors, because it includes various materials like gas, lump granular materials, liquids and powders ...
The ironmaking blast furnace is regarded as one of the biggest and most complex industrial reactors, because it includes various materials like gas, lump granular materials, liquids and powders and more than 30 major reactions and phase changes in a single reaction vessel.The mathematical simulator of this process developed in this …
in the blast furnace process (see Fig. 3). The second calculation layer is used to depict the gasi-fication conditions at the blast furnace tuyeres. This task is assigned to the adiabatic flame temperature sub model. The third calculation layer is used to determine the overall thermodynamic conditions of the blast furnace process by
Keywords: iron ore reduction kinetics, three interface shrinking core model, reacting non-isothermal flow, ani-sotropic permeability, online blast furnace process model. Discover the world's ...
facilitated with granular kinetic theory (GKT) to directly ... process of blast furnace. [79] ... Simulated blast furnace geometries of a) full 3D model, b) slot model, and c) sector model ...
Biomass fuel used in the blast furnace injection process must meet the physical and chemical characteristics of the blast furnace injection fuel ... When the speed of the chemical reaction is the control link of the whole reaction, the combustion reaction follows a kinetic model (O 2 or O 3). In the phase boundary reaction model, ...
the process. Since measurements in a blast furnace are very difficult to carry out due to size and limited accessibility, mathematical modelling based on computational fluid dynamics, reaction kinetics and transport phenomena is an applicable tool to investigate into the complex characteristics of a blast furnace.
blast furnace is changing to low reducing agent operation. At the same time, the inner volume of the blast furnace has been frequently enlarged over 5000m3 at the relining of blast furnace in Japan to secure the increase in crude steel production rate. The precise and reliable control of large blast furnace based on the low reducing operation ...
The designed model uses laboratory test results as inputs for mathematical simulation of the material processing in blast furnace aggregate. The model calculates …
High performance control of blast furnace (BF) ironmaking process is a difficult problem due to the high temperature ... efforts have been made on thermodynamic and kinetic research and research has been made in constructing mathematical models to simulate and understand the inner phenomena in blast furnace (Bi et al., 1992, Koki et …
This work represents an extended abstract of a study presented at the PRES 2016 conference. Despite the fact that alternative processes such as Corex® and Finex® have already been established on industrial scale, the blast furnace route continues to be the most important process used to produce pig iron. Due to its …
A Kinetic Model of Coke Combustion in the Tuyere Zone of Blast Furnace Tetsu-to-Hagane . 10.2355/tetsutohagane1955.66.13_1918
The global warming promotes the steel industry to replace part of coke by injecting hydrogen-rich fuel into the blast furnace to reduce CO 2 emissions and energy consumption. In this paper, the injected hydrogen-rich fuels and effects of hydrogen-rich smelting on burden reduction and property evolution were introduced, and the hot …
The blast furnace process is characterised by the variety and complexity of the phenomena of gas dynamics, charge transfer, heat transfer, recovery, softening, and …
A blast furnace operation simulator based on the multi-fluid theory was developed in this study. This model classified the materials in the furnace by the flow …
The coal/CO2 gasification reactions in molten BF (blast furnace) slag were studied kinetically by temperature-programmed thermogravimetry using a thermal analyzer. The effect of heating rates and molten BF slag on coal gasification were studied, and the activation energies, frequency factors, and most possibility mechanism functions were …
While the tuyere combustion condition under all-coke smelting model of blast furnace could supplying a direct manner to observing how the new energy affecting the coke combustion and temperature ...
The effect of hydrogen injection on blast furnace operation and carbon dioxide emissions was simulated using a 1D steady-state zonal model. The maximum hydrogen injection rate was evaluated on the ...
Dmitriev, A. N. Mathematical Modeling of the Blast Furnace Process. Ekaterinburg: IMET UB RAS, 2019. On the basis of modern concepts, the results of many years of research on the mathematical modeling of the blast furnace process are presented. A complex of mathematical models is described, including two-
The rates of the interactions among the phases and the chemical reactions were evaluated based on kinetic theories. The model successfully reproduced the fields of velocity, temperature and reaction in the furnace and its validity was confirmed. ... T1 - Multi-dimensional transient mathematical simulator of blast furnace process based on multi ...
The design and control of blast furnace (BF) ironmaking must be optimized in order to be competitive and sustainable, particularly under the more and more demanding and tough economic and...
In this paper, the recent activity and progress on the development of advanced mathematical model of blast furnace and future per- spective for desirable model are …