mathematical model for sponge iron

(PDF) Mathematical model for sponge iron production in
Project: 3D mathematical model for simulating gas dynamics, heat and mass transfer in the freeboard of a pilot-scale Rotary Hearth Furnace (RHF) in
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Mathematical Modelling of Sponge Iron Production in a ...
VOL. 5 NO. 1 OCTOBER, 2010 STEEL TECH 11 from an industrial coal-based sponge iron rotary kiln process. We have developed a fairly comprehensive mathematical model for the direct reduction of iron ore
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(PDF) Mathematical Modeling of the Melting of
In this work a mathematical model was developed to predict the melting kinetics of an isolated sponge. iron pellet in a bath of non-reactive liquid slag. The
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Mathematical Modeling of the Melting of Sponge Iron in
Mathematical Modeling of the Melting of Sponge Iron in a Bath of Non-reactive Molten Slag Eduardo PINEDA-MARTÍNEZ,1) Constantin Alberto HERNÁNDEZ-BOCANEGRA, 2) A. N. CONEJO and Marco Aurelio RAMIREZ-ARGAEZ1)* 1) School of Chemistry, National Autonomous University of Mexico, Edificio D, Primer Piso, Circuito de los institutos s/n, Cd.
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Mathematical Modeling of the Melting Rate of Metallic ...
The sponge iron or Direct Reduced Iron (DRI) is an important feedstock in the Electric Arc Furnace (EAF). The main sources of iron units for the EAF can be steel scrap, DRI, hot metal and combinations of these materials. The EAF has become a melting reactor and its melting rate plays a key role in furnace productivity.
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Mathematical model of direct reduction shaft furnace and ...
1986-1-1 · Most shaft furnaces producing sponge iron, however, have been designed empirically up to the present. In order to optimize operations a mathematical model has been developed to be applied to shaft furnace design. The model, whose reduction rate equations are derived from the three-interface model, involves both mass and heat balances.
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Mathematical Modeling of the Melting Rate of Metallic ...
sponge iron spheres as a function of initial temperature and particle size, the heat transfer coefﬁcient and thermal diffu-sivity. A mathematical model was developed by solving the heat ﬂow equation for spherical particles. An important fea-ture of this work was the model validation by immersing dense iron spheres in its own melt. This ...
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Modelling and optimisation of directreduction
The mathematical model was customized and validated with data from one of the industrial scale rotary kilns at Tata Sponge Iron Limited (TSIL) and was
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(PDF) Mathematical model for computer simulation and ...
Mathematical model for computer simulation and control of steelmaking. May 2015; ... modelling of rotary kilns for sponge iron production to avoid accretion formation are my current areas.
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THE OPTIMUM METHOD FOR CONVERTING SPONGE
2012-1-11 · SPONGE IRON TO STEEL IN ARC FURNACES G. POST Lurgi Chemie and Huttentechnik GmbH, Frankfurt, West Germany ... of productivity is explained with the aid of a mathematical model by varying the most important parame-ters. Practical aspects of the Contimelt process such as questions of protecting the refractories, optimum
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Mathematical Modeling of the Melting Rate of Metallic ...
The sponge iron or Direct Reduced Iron (DRI) is an important feedstock in the Electric Arc Furnace (EAF). The main sources of iron units for the EAF can be steel scrap, DRI, hot metal and combinations of these materials. The EAF has become a melting reactor and its melting rate plays a key role in furnace productivity.
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Mathematical Modeling of Scrap Melting in an EAF Using ...
Ehrich et al.4) studied the melting rate of a single sponge iron sphere in its own melt using both experiments and the * Corresponding author: E-mail: [email protected] ... in a rotary furnace using a three dimensional mathematical model, in which only the fluid flow in the gas phase was simulated.9) The scrap size variations were applied using a
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Simulation of direct reduction reactor by the grain model ...
2011-1-15 · Abstract. In this work, a mathematical model is developed for simulating the behavior of a direct reduction moving bed reactor for the production of sponge iron. The pellet scale model is based on a grain model with product layer resistance. The reactor is modeled through a nonisothermal, steady state, heterogeneous model.
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Mathematical Modeling of the Melting Rate of Metallic ...
sponge iron spheres as a function of initial temperature and particle size, the heat transfer coefﬁcient and thermal diffu-sivity. A mathematical model was developed by solving the heat ﬂow equation for spherical particles. An important fea-ture of this work was the model validation by immersing dense iron spheres in its own melt. This ...
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Heat and Mass Transfer in Reduction Zone of Sponge Iron ...
Numerical prediction is performed on reduction zone of iron ore reactor which is a part of counter current gas-solid reactor for producing sponge iron. The aim of the present study is to investigate the effect of reduction gas composition and temperature on quality and capacity of sponge iron products through mathematical modeling arrangement and simulation.
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2 D Model of Sponge Iron Rotary Kiln Developed Using
2021-8-10 · 2 D Model of Sponge Iron Rotary Kiln Developed Using CFD Gajendra Kumar Gaurav* and Shabina Khanam *Research Scholar and Assistant professor Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee - 247 667, India _____ Abstract: The present paper deals with 2D CFD model of rotary kilns employed in sponge iron
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Model of Integrated Production-Inventory- Distribution ...
2015-7-20 · mathematical model of integrated production-inventory-distribution system of billet steel will be proposed. The model is ... The resulting product is a sponge iron, steel slab, billet steel, hot rolled coils, cold rolled steel, and wire rod. In this paper
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THE OPTIMUM METHOD FOR CONVERTING SPONGE
2012-1-11 · SPONGE IRON TO STEEL IN ARC FURNACES G. POST Lurgi Chemie and Huttentechnik GmbH, Frankfurt, West Germany ... of productivity is explained with the aid of a mathematical model by varying the most important parame-ters. Practical aspects of the Contimelt process such as questions of protecting the refractories, optimum
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Modeling and Simulation of the MIDREX Shaft Furnace ...
2015-8-21 · The direct reduction is a process for reducing iron ore and producing sponge. There are several technologies, like MIDREX1 and H.Y.L2 using the countercurrent shaft furnace to make sponge iron.. In MIDREX technology, the furnace is a vertical shaft (Fig. 1).A charge of pelletized or lump ore is loaded into the top of the furnace and descends by gravity through the
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Mathematical Modeling of the Blast Furnace Process
2022-1-5 · UDC 669.162.263 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.
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MATHEMATICAL MODELING AND SIMULATION OF
2019-5-16 · Abstract.1 In this work, a mathematical model is developed for simulating the behavior of a counter-current moving bed reactor, in which the reduction of porous iron ore pellets to sponge iron is simulated. Simultaneous mass and energy balances within both the solid particles and the reactor, will lead to a set of coupled ordinary differential
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Model of Integrated Production-Inventory- Distribution ...
2015-7-20 · mathematical model of integrated production-inventory-distribution system of billet steel will be proposed. The model is ... The resulting product is a sponge iron, steel slab, billet steel, hot rolled coils, cold rolled steel, and wire rod. In this paper
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Modeling and Simulation of the MIDREX Shaft Furnace ...
2015-8-21 · The direct reduction is a process for reducing iron ore and producing sponge. There are several technologies, like MIDREX1 and H.Y.L2 using the countercurrent shaft furnace to make sponge iron.. In MIDREX technology, the furnace is a vertical shaft (Fig. 1).A charge of pelletized or lump ore is loaded into the top of the furnace and descends by gravity through the
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IOM3 | Swedish model for carbon-free sponge iron
2020-11-24 · Swedish model for carbon-free sponge iron. Swedish mining and mineral group LKAB will switch from producing iron ore pellets to producing carbon-free sponge iron using hydrogen-based technology. State-owned LKAB
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Mathematical simulation of direct reduction process in ...
2013-11-20 · A one-dimensional unsteady mathematical model was established to describe direct reduction in a composite pellet made of metallurgical dust. The model considered heat transfer, mass transfer, and chemical reactions including iron oxide reductions, zinc oxide reduction and carbon gasification, and it was numerically solved by the tridiagonal matrix algorithm (TDMA).
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Mathematical Modeling of the Blast Furnace Process
2022-1-5 · UDC 669.162.263 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.
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Detailed Modeling of the Direct Reduction of Iron Ore in
2018-10-9 · 2. Mathematical Model 2.1. Principle The reduction of hematite ore to iron occurs via two intermediate oxides, namely, magnetite and wüstite (considered as Fe 0.95O [19]), and by two gaseous reactants, namely, H 2 and CO. The following six reduction reactions were therefore considered: 3Fe 6O 7( q)+H 6( e)→2Fe 7O 8( q)+H 6O( e) (1) Fe 7O 8 ...
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Accretion Control in Sponge Iron Production Kiln using ...
Sponge iron is the product generated by direct reduction of iron ore with aid of either carbon or natural gas under controlled temperatures and pressures within a rotary kiln. However the performance of rotary kilns is usually adversely affected by the formation of accretion. This accumulation of sintered solid particles which form rings
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Transformation of Indian Sponge Iron Industry Vis-à-vis ...
2014-5-21 · Since the last 30 years, the Indian Sponge Iron (SI) industry has grown by leaps and bounds. Though the sector has undergone rapid growth in recent past, the growth graph is not likely to be sustained due to multiple geo-political and other related factors. Besides, the opening up of the economy has given unprecedented importance to the issues pertaining to quality at
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Mathematical Model to Estimate the Rate Parameters and ...
2014-10-15 · Reduction of iron ore–coal composite pellets at a rotary hearth furnace (RHF) could be an energy efficient process under optimized design and operating conditions. The present study aims to analyze such process through process models for optimization of thermal efficiency. In the present article, a mathematical model has been described to calculate the rate
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