Título

BENCH-SCALE MICROPELLETIZING TESTS OF SINTERING MIXTURES

BENCH-SCALE MICROPELLETIZING TESTS OF SINTERING MIXTURES

Autoria

Ribeiro, Efrem Martins; Braga, Raimundo Nonato Batista; Borges, Wander de Oliveira; Januzzi, Aércio

Ribeiro, Efrem Martins

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Braga, Raimundo Nonato Batista

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Borges, Wander de Oliveira

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Januzzi, Aércio

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DOI

10.5151/2594-357x-0127

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Resumo

The sintering process consists in the agglomeration of iron ore fines (named sinter- feed), fluxes and additives. The product of this process, the sinter – is the main component of the blast furnace burden at ArcelorMittal Monlevade. Micropelletizing performs an important role in the sinter production due to its impact in the main operational parameters of the sintering process and in the sinter quality. Aiming a greater knowledge about the sinter-feed behavior in the micropelletizing process, bench-scale tests were carried out using the sintering mixture usually used at the sinterplant in ArcelorMittal Monlevade, placing emphasis in Andrade sinter-feed. These tests consisted of the following steps: mixture preparation (raw materials proportioning and homogenization), micropelletizing in balling, sintering of the micropellets and the sinter characterization. The tests results provided support to the decision of applying the “Hybrid Pelletized Sinter” process (HPS) at Monlevade Works, representing an important tool for the decision-making.N This paper shows the results obtained in the micropelletizing of the sintering mixture in bench-scale, as well as their reproducibility in the industrial facility at ArcelorMittal Monlevade.

The sintering process consists in the agglomeration of iron ore fines (named sinter- feed), fluxes and additives. The product of this process, the sinter – is the main component of the blast furnace burden at ArcelorMittal Monlevade. Micropelletizing performs an important role in the sinter production due to its impact in the main operational parameters of the sintering process and in the sinter quality. Aiming a greater knowledge about the sinter-feed behavior in the micropelletizing process, bench-scale tests were carried out using the sintering mixture usually used at the sinterplant in ArcelorMittal Monlevade, placing emphasis in Andrade sinter-feed. These tests consisted of the following steps: mixture preparation (raw materials proportioning and homogenization), micropelletizing in balling, sintering of the micropellets and the sinter characterization. The tests results provided support to the decision of applying the “Hybrid Pelletized Sinter” process (HPS) at Monlevade Works, representing an important tool for the decision-making.N This paper shows the results obtained in the micropelletizing of the sintering mixture in bench-scale, as well as their reproducibility in the industrial facility at ArcelorMittal Monlevade.

Palavras-chave

Sintering; Micropelletizing; Iron ore; Bench-scale tests

Sintering; Micropelletizing; Iron ore; Bench-scale tests