Distribution & Access For Publication Downloads News About Us Contact Us
Paper Titles
New Possibilities of ESR for Modern Machine Engineering
p.430
Iron Oxidation State Analysis in ESR Slag
p.437
Efficiency of Application of Evaporative Cooling of Graphite Electrodes to Reduce their Consumption in Arc Furnaces
p.444
Development of the Process for Obtaining Iron-Ore Pellets with Required Metallurgical Properties
p.450
Kinetics of Siderite Ore Roasting in the Shaft Furnace
p.456
Research on the Thermal Work of the Drum-Type Chamber Furnace with a Constant Temperature of the Working Space
p.462
Study on Thermal Operation and Design of Ring Furnace of the Pipe Rolling Plant
p.468
Zinc Ferrite Decomposition by Sodium Carbonate and Calcium Oxide at Roasting of Steelmaking Dust
p.474
Development Features of Thermal and Gas-Dynamic Performance of Mineral Wool Cupola Furnace
p.480

Kinetics of Siderite Ore Roasting in the Shaft Furnace

Article Preview

Abstract:

Kinetics of the siderite ore roasting in the air, helium and hydrogen flows has been studied in a gasometrical unit with continuous mass variation logging. We have derived the expression for determination of an apparent degree of calcination and identified its dependence on the size of the prill, the heat treatment duration, and gas-phase composition. Using a generalized chemical kinetics equation, we have obtained a formula for calculation of the decomposition period for siderite ore samples. It has been found that calcination rate increases with the temperature rise, irrespective of the sample size and atmospheric composition. Calcination process has been studied at low temperatures. We have demonstrated that it is feasible to describe the process of siderite ore thermal dissociation by a first-order kinetics equation. We have obtained the expression to calculate the duration of this process depending on different parameters. Using a generalized chemical kinetics equation, we have obtained a formula for checking the expressions that describe the experimental data. We have studied kinetics of the reduction of roasted ore samples at various temperatures using different sizes of the samples. The obtained results have been applied for optimization of the design values and operating conditions of the siderite ore roasting in shaft furnaces. These will also be used for designing a shaft furnace consisting of a calcination zone, reduction zone (metallization zone) and metallized product cooling zone, which will increase iron content in the end-product to 65-70%.

You might also be interested in these eBooks
Materials Science and Metallurgical Technology View Preview

Info:

Periodical:

Materials Science Forum (Volume 946)

Pages:

456-461

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.946.456

Citation:

Cite this paper

Online since:

February 2019

Authors:

Boris P. Yur'ev*, Vyacheslav A. Dudko, Anna Shageeva

Keywords:

Air, Calcination, Dissociation, Gas Phase, Helium, Hydrogen, Iron Content, Kinetics, Metallization, Parameters, Reduction, Roasting, Shaft Furnace, Siderite Ore, Temperature, Zone

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

* - Corresponding Author

References

[1] B.P. Yuriev, S.G. Melamud, N.A. Spirin, V.V. Shatsillo, Technological and thermotechnical basics of preparation of siderite ore for metallurgical treatment, OOO AMK Den RA, Yekaterinburg, (2016).

Google Scholar

[2] B.P. Yuriev, S.G. Melamud, N.A. Spirin, The study of kinetics of Bakal siderite ore dissociation, Izvestiya vuzov, Ferrous industry 10 (2012) 12-14.

DOI: 10.17073/0368-0797-2012-10-12-14

Google Scholar

[3] N.V. Akhlyustina, Influence of chemical mineralogical composition of siderite and sideroplesite on the decomposition onset temperature, Izvestiya vuzov, Mining journal 8 (1979) 135-138.

Google Scholar

[4] M.M. Goldman, L.P. Ni, A.I. Ardasheva, T.B. Tursunbaev, Siderite behaviour during roasting, Izvestiya vuzov, Non-ferrous industry 3 (1977) 41-44.

Google Scholar

[5] B.P. Yuriev, T.I. Kostousova, The study of the properties of siderite ore and the products of its roasting during heat treatment, Izvestiya vuzov, Ferrous industry 3 (1999) 17-23.

Google Scholar

[6] M.N. Zaparnyuk, E.G. Neshporenko, Determination of thermodynamic conditions of energy efficient siderite ore treatment, Nauka i proizvodstro Urala 11 (2015) 2-3.

Google Scholar

[7] L.I. Leontiev, N.A. Vatolin, S.V. Shavrin, N.S. Shumakov, Pyrometallurgical Treatment of Multimetal Ore, Metallurgia, Moscow, (1997).

Google Scholar

[8] Z.I. Kostina, S.A. Krylova, I.V. Ponurko, The question of siderite ore treatment, International journal of applied and fundamental research 11, 4 (2015) 580-585.

Google Scholar

[9] V.I. Bolshakov, High-Efficient Energy-Saving Blast-Furnace Smelting Process, Naukova dumka, Kiev, (2007).

Google Scholar

[10] O. Muhl, Erfahrungsbericht uber die Schwertrube-Lyklonanlage an Steiurischen Erzberg, Berg-und Huttenmannische Monashefte 126, 8 (1981) 344-348.

Google Scholar

[11] A. Kardi, Moznosti Ldokonalenia technologie up ravy Sideritovej rudy vzavode LB Rudnany, Rudy 31, 3 (1983) 75-79.

Google Scholar

[12] B.P. Yuriev, V.A. Goltsev, The influence of siderite ore composition, design values and operating conditions on the shaft furnace performance, Stal 4 (2013) 6-10.

Google Scholar

[13] B.P. Yuriev, S.G. Melamud, Roasting of siderite ore with the use of solid fuel, Stal 7(2012)2-4.

Google Scholar

[14] B.P. Yuriev, Calculation procedure for heating time of siderite ore at phase changes, Izvestiya vuzov, Ferrous industry 3 (2011) 61-64.

Google Scholar

[15] B.P. Yuriev, V.V. Shatsillo, S.G. Melamud, Procedure for determination of solid fuel consumption for siderite ore roasting in various gas media, Izvestiya vuzov, Ferrous industry 2 (2008) 8-11.

Google Scholar

[16] B.P. Yuriev, A.G. Zhunev, Peculiarities of desulphurization during Bakal siderite ore roasting, Stal 12 (2009) 12-16.

Google Scholar

[17] B.P. Yuriev, S.G. Melamud, V.V. Shatsillo, Influence of design values and operating conditions of shaft furnaces on the properties of siderite ore and the products of its roasting, Ferrous metallurgy: Bulletin of Chermetinformatsia institute 9(1281) (2006) 16-33.

Google Scholar

[18] V.A. Krasnoborov, S.L. Yaroshevsky, A.A. Denisov et al., Siderite Ore: Efficiency and Industrial Perspectives for Blast-furnace Smelting, Novy Mir, Donetsk, (1996).

Google Scholar

[19] M.E. Blank, B.A. Bokovikov, T.D. Trapeznikova, B.P. Yuriev, Experimental studies of siderite ore roasting, in: Thermotechnical Research of the Processes and Units in Ferrous Metallurgy, Metallurgia, Moscow, (1986) 9-12.

Google Scholar

[20] B.P. Yuriev, V.V. Shatsillo, S.G. Melamud, Principles of recognition for heat of reactions taking place in a roasted siderite ore layer during determination of optimal fuel consumption in the shaft furnace, Izvestiya vuzov, Ferrous industry 8 (2008) 3-5.

Google Scholar

Scientific.Net is a registered brand of Trans Tech Publications Ltd
© 2024 by Trans Tech Publications Ltd. All Rights Reserved