Mathematical Model For A Straight Grate Iron Ore

Iron ore sintering and pellet induration processes

In this work, a mathematical model for the straight-grate pellet induration furnace is presented. ... Mathematical model for a pilot scale iron ore pellet induration furnace has been developed which considers the process of induration including the reactions of limestone, magnetite and coke. ...

Dynamic simulation of pellet induration process in straight-grate

A mathematical model of pellet induration process in the straight-grate system is presented. The important physical and chemical phenomena known to affect the heat and mass transfer in the process have been taken into account in the formulation of the model. ... a substantial number of models have been put forward for iron ore sintering ...

Development and application of thermal mathematical model of iron ore

A mathematical model of the grate/kiln process for the induration of iron ore pellets, verified for an operating plant, has been used to investigate the effects of process variables on fuel and ...

A Mathematical Model for Straight-Grate Iron Oxide Pellet …

In this work, a mathematical model for the straight-grate pellet induration furnace is presented. The induration furnace is an equipment used for the efficient heat and mass …

Drying and preheating processes of iron ore pellets in a traveling grate

A mathematical model of drying and preheating processes in a traveling grate was presented based on the laws of mass, momentum, heat transfer, and drying semiempirical relations. A field test was systematically carried out in a traveling grate. The effects of pellet diameter, moisture, grate velocity, and inlet gas temperature on the pellet bed temperature …

Rigorous modeling of the Traveling Grate stage in the iron ore …

Mathematical model for a straight grate iron ore pellet induration process of industrial scale Comput Mater Sci, 44 ( 2 ) ( Dec. 2008 ), pp. 296 - 302, 10.1016/jmatsci.2008.03.024 View PDF View article View in Scopus Google Scholar

IRON ORE PELLETIZING PROCESS

Sadrnezhaad, S.K.; Ferdowsi, A.; Payab, H. Mathematical model for a straight grate iron ore pellet induration process of industrial scale. ... 2013. Optimizing iron ore pelletization with the use ...

A dynamic mathematical model of the complete grate/kiln iron–ore …

Induration (drying and hardening) of iron ore pellets is an energy-intensive feed preparation step for both the blast furnace and direct reduction routes to iron. It is commonly carried out by a 'grate/kiln' process. A mathematical model of the process is described, in which mechanistic models of the grate furnace, kiln, and cooler are linked to enable simulation of the entire …

Mathematical models and expert system for grate-kiln process of iron

Rotary kiln process for iron ore oxide pellet production is hard to detect and control. Construction of one-dimensional model of temperature field in rotary kiln was described. And the results lay a solid foundation for online control. Establishment of kiln process control expert system was presented, with maximum temperature of pellet and gas temperature at the feed …

A dynamic mathematical model of the complete grate/kiln …

A Dynamic Mathematical Model of the Complete Grate/Kiln Iron-Ore Pellet Induration Process J.A. THURLBY Induration (drying and hardening) of iron ore pellets is an energy-intensive feed preparation step for both the blast furnace and direct reduction routes to iron. ... number of models of the complete Lurgi straight-grate pro- cess have been ...

Optimizing the operation of straight-grate iron-ore pellet induration

Mathematical models of straight-grate pellet induration processes have been developed and carefully validated by a number of workers over the past two decades. However, the subsequent exploitation of these models in process optimization is less clear, but obviously requires a sound understanding of how the key factors control the operation. In this article, we …

An integrated optimal control model for the drying and preheating

The drying and preheating process plays a crucial role in the induration of iron ore pellets. It is conducted on a closed, moving bed in both the straight grate and grate-kiln processes. ... Mathematical model of grate–kiln–cooler process used for induration of iron ore pellets. ... Majumder S. Successive approximate model based multi ...

Development and validation of a mathematical model for the moving grate

A mathematical model is described for the induration of iron ore pellets on a moving grate. The validity of the model has been demonstrated, both for the performance of an operating plant and for the firing of pellets in a laboratory pot grate furnace.

An integrated optimal control model for the drying and preheating

Young RW, Cross M, Gibson RD. Mathematical model of grate–kiln–cooler process used for induration of iron ore pellets. Ironmaking Steelmaking 1979; 6: 1–13. Google Scholar. 4. ... Majumder S. Successive approximate model based multi-objective optimization for an industrial straight grate iron ore induration process using evolutionary ...

Virtual indurator: A tool for simulation of induration of wet iron ore

In order to utilize the mathematical model of straight grate induration process in an easy manner, we have developed a user-friendly interface to input the data and to view the simulation results. ... Optimizing the operation of straight-grate iron-ore pellet induration systems using process models. Metallurgical and Materials Transactions B ...

Mathematical model for a straight grate iron ore pellet induration process of industrial scale

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Computational Materials Science

A mathematical model is developed for induration of the iron-ore pellets in an industrial-scale plant based on the laws of mass, heat and momentum transfer. Physicochemical processes …

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[PDF] Mathematical model for a straight grate iron ore pellet

DOI: 10.1016/JMATSCI.2008.03.024 Corpus ID: 135505590; Mathematical model for a straight grate iron ore pellet induration process of industrial scale @article{Sadrnezhaad2008MathematicalMF, title={Mathematical model for a straight grate iron ore pellet induration process of industrial scale}, author={Sayed Khatiboleslam Sadrnezhaad …

Modelling of heat transfer in a straight grate pellet induration

Straight grate furnaces are widely used for induration of hematite pellets where typically 1%–2% carbon is added to the green mix to help in generating heat by combustion. The quality of the pellets in such reactor varies from top to bottom of the bed as different layers of pellets are exposed to varying thermal and gaseous environments. The thermal evolution (as a …

2008

A mathematical model is developed for induration of the iron-ore pellets in an industrial-scale plant based on the laws of mass, heat and momentum transfer. Different conditions are used for determination of the effect of addition of carbon to the green pellets on performance of the induration process. This results in a productivity enhancement of 20%, an N.G. Fuel …

Mathematical model for a straight grate iron ore

Mathematical model for a straight grate iron ore ... - Sadrnezhaad. EN. ... Mathematical model for a straight grate iron ore ... - Sadrnezhaad . SHOW MORE . SHOW LESS . ePAPER READ . DOWNLOAD ePAPER. TAGS pellets; carbon; pellet ...

(PDF) Review on mathematical models for travelling-grate iron …

The purpose of this paper is to provide a review regarding the available mathematical models for travelling-grate iron ore induration furnaces, pointing at some opportunities and aspects to ...

[PDF] Mathematical model for a straight grate iron ore pellet

We present a mathematical model of iron ore pellet drying and induration in an industrial scale application, and validate it against measured data. The model is based on the …

Formulating iron ore pellet induration process in an industrial

There are mathematical models reported for pellet induration in the straight grate system. To know the systematic model development of the induration process, it is perhaps appropriate to begin with the work of Voskamp and Brasz [10], who have simulated the straight grate indurating unit by using a simple mathematical model.

Virtual indurator: A tool for simulation of induration of …

Mathematical models of straight-grate pellet induration processes have been developed and carefully validated by a number of workers over the past two decades. However, the subsequent exploitation of these models in process …

Development and application of thermal mathematical model of iron ore

Based on the analysis of heat transfer mechanics, physical and chemical change of pellet drying and preheating process in grate, the mathematical model is established and solved by three-diagonal matrix algorithm. With Visual Basic 6.0 a simulation software is developed. The model is verified by measurements at a domestic pellet plant, and the temperature distribution …

Mathematical models and expert system for grate-kiln process of …

A Mathematical Model for Straight-Grate Iron Oxide Pellet Induration Furnace: Formulation, Plant Scale Validation, Implementation and Control

Modeling and simulation of iron ore pellet drying and induration

We present a mathematical model of iron ore pellet drying and induration in an industrial scale application, and validate it against measured data. The model is based on the laws of mass and heat transfer, and incorporates both physical and chemical processes. The partial differential equations of the process kinetic model involve derivatives in time and bed …

Mathematical model for a straight grate iron ore pellet induration

A mathematical model was proposed through analyzing the flow, heat and mass transfer in iron ore sintering, and the reliability of this model was verified by comparing the...

Dynamic simulation of pellet induration process in straight-grate

The model of straight-grate was further validated against gas flow measurements reported by Hasenack et al. ... in proc. Mathematical process models in iron and steelmaking. Met. Soc. (1975), pp. 6-16. Google Scholar. ... A dynamic mathematical model of the complete grate/kiln iron-ore pellet induration process. Metall. Trans. B, 19 (1988), ...

MATHEMATICAL MODEL FOR ENERGY SAVING IN …

Abstract Mathematical model for a pilot scale iron ore pellet induration furnace has been developed which considers the process of induration including the reactions of limestone, …