Optimising method for improving granulation effectiveness of iron ore sintering mixture

Gan, Min; Fan, Xiaohui; Ji, Zhiyun; Chen, X. L.; Liang, Yin; Jiang, Tao; Yu, Zhibin; Huang, Yunsong

doi:10.1179/1743281214y.0000000237

Cited by 29 publications

(19 citation statements)

References 10 publications

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“…Other authors investigated the use of concentrates and pellet feed, which were previously pre-treated in roller press aiming to increase its specific surface, in sintering process showing that the pre-treatment allows to use these materials without losing process permeability. [14][15][16] Those findings were recently reinforced by Yang et al 2) who investigated different size distribution of specular hematite ore types and Oliveira et al 17) whom reported that it was also possible to replace coarse sinter feeds without losing productivity.…”

Section: Granulation Behavior Of An Iron Ore Sintering Mixture Contaimentioning

confidence: 93%

Granulation Behavior of an Iron Ore Sintering Mixture Containing High Grade Pellet Feed with Different Specific Surface

et al. 2020

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Section: Granulation Behavior Of An Iron Ore Sintering Mixture Contaimentioning

confidence: 93%

Granulation Behavior of an Iron Ore Sintering Mixture Containing High Grade Pellet Feed with Different Specific Surface

et al. 2020

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“…In addition to porosity, particle shape also affects the layer growth rate with increasing moisture content. The present commonly-accepted proposal 34,35) is that irregularly shaped and rough particles are good nuclei, with a higher chance of attaching fine and intermediate particles onto granule layers. In summary, the overall effects of these ore particle characteristics on the growth of adhering layer result in the different trend slopes of the apparent density between the studied granule types.…”

Section: Analysis Of Apparent Densitymentioning

confidence: 99%

Experimental Study on the Physical Properties of Iron Ore Granules Made from Australian Iron Ores

Li¹,

Moreno-Atanasio²,

O’Dea

et al. 2019

ISIJ International

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A fundamental experimental study was conducted to measure the physical properties of iron ore granules made from three types of Australian iron ores. In this study, some key physical property parameters, including apparent density, Young's modulus and the coefficients of static and rolling frictions, of the iron ore granules with varying moisture content were investigated. The effect of granule size on the considered property parameters was also studied for the iron ore granules at the optimal moisture content which was determined by permeability pot packing test. The measurement results showed that both apparent density and Young's modulus of iron ore granules generally decreased with moisture content due to the growth of adhering layer around the nuclei particles. The static friction coefficient generally increased with moisture content but, at lower moisture contents, its variation differed between the granule types. The rolling friction coefficient generally experience a minimum value as moisture content increased within the considered range. The moisture content for the minima varied with granule type due to the different characteristics of the ore types. At the optimal moisture content for each granule type, the apparent density of different granule size fractions showed variable values because of the heterogeneous composition of the raw mixture in each size fraction. The Young's modulus and static friction coefficient showed slight downward and upward trends with the increase of granule size, respectively. The rolling friction coefficient is nearly independent of granule size.

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“…During this stage, fine particles adhere to the coarse particles, or fine particles agglomerate to form appropriate size grains [4,5].…”

Section: The Effect Of Granulation In the Sintering Processmentioning

confidence: 99%

The Use of Pellet Screenings in the Sintering Process

Pereira¹,

Souto²,

Peres³

et al. 2017

Tecnologia Em Metalurgia Materiais E Mineração

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With the progressive deterioration in iron ore quality worldwide in recent years, steelmakers need to seek alternatives to mitigate the deficiency of this raw material. Investments in the use of high grade concentrate and the application of pre-agglomeration technologies are alternatives to make up for this deficit without affecting the utilization in the sintering process. As a possibility to avoid such investment, pellet screenings in comparison with the current natural sinter feed that can be found in the market, presents advantages such as low alumina and silica contents, but also low loss on ignition (LOI) and suitable particle size distribution. Sintering tests were performed at the 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 test results showed gains in the chemical, physical and metallurgical quality of the sinter produced. Keywords: Sintering process; Sinter feed; Iron ore mixtures; Pellet screenings. O USO DE PELLET SCREENINGS NO PROCESSO DE SINTERIZAÇÃO ResumoCom a deteriorização progressiva da qualidade do minério de ferro em todo o mundo nos anos recentes, fabricantes de aço precisam buscar alternativas para mitigar a escassez de sinter feed de alto teor. Investimentos no uso de concentrados de alto teor e a aplicação de tecnologias de pré-aglomeração são alternativas para suprir essa deficiência. Como possibilidade para evitar tais investimentos onerosos, o pellet screenings, em comparação com o sinter feed natural atualmente disponível no Mercado, apresenta vantagens tais como baixos teores de alumina e sílica, baixo nível de perda ao fogo e distribuição de tamanho de partículas adequado. Ensaios de sinterização foram executados no laboratório SGA (Studiengesellschaft für Eisenerzaufbereitung), na Alemanha, para avaliar o desempenho desse produto quando adicionado a misturas típicas de sinterização usadas na Europa Ocidental. Os resultados mostraram ganhos de qualidade química, física e metalúrgica do sínter produzido. Palavras-chave: Processo de sinterização; Sinter feed; Misturas de minérios de ferro; Pellet screenings.

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Optimising method for improving granulation effectiveness of iron ore sintering mixture

Cited by 29 publications

References 10 publications

Granulation Behavior of an Iron Ore Sintering Mixture Containing High Grade Pellet Feed with Different Specific Surface

Granulation Behavior of an Iron Ore Sintering Mixture Containing High Grade Pellet Feed with Different Specific Surface

Experimental Study on the Physical Properties of Iron Ore Granules Made from Australian Iron Ores

The Use of Pellet Screenings in the Sintering Process

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