THE EFFECT OF HIGH GRADE PELLET FEED ON SINTERING PERFORMANCE
Pereira, Helio Cardoso; Souto, Philippe Rocha Santos; Peres, Antônio Eduardo Clark; Ritz, Volker Johan
http://dx.doi.org/10.4322/2176-1523.1106
Tecnol. Metal. Mater. Min., vol.13, n4, p.340-345, 2016
Abstract
With the progressive deterioration of sinter feed quality worldwide in recent years, steelmakers need to seek alternatives to mitigate the deficiency of this raw material. Alternatives to make up for this deficit are the use of concentrate, pellet feed and application of pre-agglomeration technologies, such as intensive mixers, pelletizing discs and nodulizers. The possibility of using in the sintering mixture a high grade Brazilian pellet feed, designated as HGPF, which presents advantages compared with the natural sinter feed currently available in the market, such as low alumina and silica contents, suitable surface morphology and mineralogical properties, was investigated. Sintering tests were conducted at SGA (Studiengesellschaft für Eisenerzaufbereitung) laboratory in Germany to evaluate the performance of this product when added to typical sintering mixtures used in Western Europe. The results showed gains in the chemical, physical and metallurgical quality of the sinter produced.
Keywords
Sintering, Sinter feed, Pellet feed, Iron ore.
Referências
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2 Hsieh L. Effect of using a high speed agitating mixer on sintering properties. In: Proceedings of the METEC InSteelCon; 2011; Düsseldorf; Germany. Düsseldorf: Stahlinstitut VDEh; 2011. p. 439-447.
3 Ludivine P, Gilles ND, Sven H, Wouter L, Frederick VV, Jean-François D, et al. Vertical intensive mixing for processing finer iron ore in sinter plant In: Associação Brasileira de Metalurgia Materiais e Mineração. Proceedings of the 44th Ironmaking and Raw Materials Seminar – International; 2013; Belo Horizonte, Brazil. Belo Horizonte: ABM. p. 321-329.
4 Lu L, Holmes J, Manuel JR. Effects of alumina on sintering performance of hematite iron ores. ISIJ International. 2007;47(3):349-358. http://dx.doi.org/10.2355/isijinternational.47.349.
5 Cores A, Babich A, Muñiz A, Ferreira S, Mochon J. The influence of different iron ores mixtures composition on the quality of sinter. ISIJ International. 2010;50(8):1089-1098. http://dx.doi.org/10.2355/isijinternational.50.1089.
6 Mao H, Zhang R, Lv X, Bai C, Huang X. Effect of surface properties of iron ores on their granulation behavior. ISIJ International. 2013;53(9):1491-1496. http://dx.doi.org/10.2355/isijinternational.53.1491.
7 International Organization for Standardization – ISO. ISO 3271:2007: iron ores for blast furnace and direct reduction feedstocks --Determination of tumble strength and abrasion indices. Genebra: ISO; 2007.
8 International Organization for Standardization – ISO. ISO 4695:2007: iron ores for blast furnace feedstocks --Determination of reducibility by the rate of reduction index. Genebra: ISO; 2007.
9 International Organization for Standardization – ISO. ISO 4696-1:2007: iron ores for blast furnace feedstocks – Determination of low-temperature reduction disintegration indices by static method - Part 1: Reaction with CO. CO2 . H2 and N2 . Genebra: ISO; 2007.
2 Hsieh L. Effect of using a high speed agitating mixer on sintering properties. In: Proceedings of the METEC InSteelCon; 2011; Düsseldorf; Germany. Düsseldorf: Stahlinstitut VDEh; 2011. p. 439-447.
3 Ludivine P, Gilles ND, Sven H, Wouter L, Frederick VV, Jean-François D, et al. Vertical intensive mixing for processing finer iron ore in sinter plant In: Associação Brasileira de Metalurgia Materiais e Mineração. Proceedings of the 44th Ironmaking and Raw Materials Seminar – International; 2013; Belo Horizonte, Brazil. Belo Horizonte: ABM. p. 321-329.
4 Lu L, Holmes J, Manuel JR. Effects of alumina on sintering performance of hematite iron ores. ISIJ International. 2007;47(3):349-358. http://dx.doi.org/10.2355/isijinternational.47.349.
5 Cores A, Babich A, Muñiz A, Ferreira S, Mochon J. The influence of different iron ores mixtures composition on the quality of sinter. ISIJ International. 2010;50(8):1089-1098. http://dx.doi.org/10.2355/isijinternational.50.1089.
6 Mao H, Zhang R, Lv X, Bai C, Huang X. Effect of surface properties of iron ores on their granulation behavior. ISIJ International. 2013;53(9):1491-1496. http://dx.doi.org/10.2355/isijinternational.53.1491.
7 International Organization for Standardization – ISO. ISO 3271:2007: iron ores for blast furnace and direct reduction feedstocks --Determination of tumble strength and abrasion indices. Genebra: ISO; 2007.
8 International Organization for Standardization – ISO. ISO 4695:2007: iron ores for blast furnace feedstocks --Determination of reducibility by the rate of reduction index. Genebra: ISO; 2007.
9 International Organization for Standardization – ISO. ISO 4696-1:2007: iron ores for blast furnace feedstocks – Determination of low-temperature reduction disintegration indices by static method - Part 1: Reaction with CO. CO2 . H2 and N2 . Genebra: ISO; 2007.
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