With the aim of developing an iron ore sinter with a better reducibility, authors researched co-firing green pellets and mix in packed bed. First, physical simulation simulator for charging equipment sintering machine demonstrated that were distributed more strongly to lowest part bed because their size is larger than mix. Pot tests based on simulated pellet distribution proved it possible prod...

The reoxidation rate of sponge iron pellets and briquettes and oxidation of pure iron powder with compressibility between 27% and 55% in air and within the temperature range 300-900°C has been investigated. Factors affecting the oxidation rate are presented. These include the effect of temperature, compressibility, and sintering of Fe-powder before and during the oxidation.

The collapse of the Fundão tailings dam at Mariana (State of Minas Gerais, Brazil) started a huge human tragedy and likely the most serious environmental disaster in recent Brazilian history. The dam had contained waste from processing iron ore from mines owned by Samarco, a joint venture company of the Brazilian Vale S.A. and the Anglo-Australian BHP Billiton Ltd. Following ineffective attempt...

The operational conditions, including temperature and gas composition, vary along the radial position in a blast furnace. Nevertheless, very few studies can be found literature that discuss how reduction behavior of ferrous burden varies position. In this study, effect charging on reducibility acid iron ore pellets was investigated using laboratory-scale, high-temperature furnace CO-CO2-N2 CO-C...

Highly ordered Fe-MCM-41 molecular sieve was successfully synthesized by using n-hexadecyl-trimethyl ammonium bromide (CTAB) as the template and the iron ore tailings (IOTs) as the silicon and iron source. X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), diffuse reflectance UV-visible spectroscopy, (29)Si magic-angle spinning (MAS) nuclear magnetic resonance (N...