Title

INTENSIVE MIXING AND GRANULATION SYSTEM: SOLUTIONS FOR ULTRA-FINES IN SINTERING

INTENSIVE MIXING AND GRANULATION SYSTEM: SOLUTIONS FOR ULTRA-FINES IN SINTERING

Authorship

Reidetschlaeger, Johann; Hoetzinger, Stefan; Fulgencio, André

Reidetschlaeger, Johann

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Hoetzinger, Stefan

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Fulgencio, André

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DOI

10.5151/2594-357X-23752

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Abstract

One of the global trends that are constantly challenging the iron and steel producers is related to worsening of the iron ore grades. The run of mine is not producing ores with the same purity of the past and materials like silica need to be removed before further processing. Therefore, a larger amount of iron ore has to be further beneficiated and concentrated and the result is a significant amount of pellet feed available to the market. However, most of the integrated steel plants have sintering plants at their sites in order to agglomerate the fines and prepare a good blast furnace burden. But the fines are now finer than before and operators are uncertain about the impact of these ultra-fines in their sinter raw mix. After years of development and now with several industrial references operating, Siemens VAI brought to the market the Intensive Mixing and Granulation System (IMGS) which processes efficiently pellet feed in sinter plants. The objective of this paper is to demonstrate what the latest developments are in this system and what Siemens VAI is doing to overcome the remaining challenges in this field.

One of the global trends that are constantly challenging the iron and steel producers is related to worsening of the iron ore grades. The run of mine is not producing ores with the same purity of the past and materials like silica need to be removed before further processing. Therefore, a larger amount of iron ore has to be further beneficiated and concentrated and the result is a significant amount of pellet feed available to the market. However, most of the integrated steel plants have sintering plants at their sites in order to agglomerate the fines and prepare a good blast furnace burden. But the fines are now finer than before and operators are uncertain about the impact of these ultra-fines in their sinter raw mix. After years of development and now with several industrial references operating, Siemens VAI brought to the market the Intensive Mixing and Granulation System (IMGS) which processes efficiently pellet feed in sinter plants. The objective of this paper is to demonstrate what the latest developments are in this system and what Siemens VAI is doing to overcome the remaining challenges in this field.

Keywords

Mixing; Iron ore; Ultra-fines; Sinter plant.

Mixing; Iron ore; Ultra-fines; Sinter plant.