**Iron Ore Agglomeration Technologies** Iron Ore Agglomeration Technologies

#### Daniel Fernández-González, Juan Piñuela-Noval and Luis Felipe Verdeja Daniel Fernández-González,

Additional information is available at the end of the chapter Juan Piñuela-Noval and Luis Felipe Verdeja

http://dx.doi.org/10.5772/intechopen.72546 Additional information is available at the end of the chapter

#### Abstract

Until the 1950s of the last century, the oxidized iron ores that were loaded into the blast furnace had granulometries within 10 and 120 mm. However, the depletion of highgrade iron ore sources has made necessary the utilization of concentration processes with the purpose of enriching the iron ore. Because of these processes, a fine granulometry is produced, and thus iron agglomeration process is necessary. There are several agglomeration processes including: briquetting, extrusion, nodulization, pelletizing and sintering, although pelletizing and sintering are the most widely used, and especially sintering process (70% blast furnace load). Apart from obtaining an agglomerated product, the objective is reaching the suitable characteristics (thermal, mechanical, physical, and chemical) in a product that is then fed into the blast furnace, achieving a homogenous and stable operation in this furnace with economical profitability.

DOI: 10.5772/intechopen.72546

Keywords: iron ore, sintering, pelletizing, solar energy, environment
