Title
Self-reducing of chromites for ferro-chromium production: Influence of the composition of the slag
Date Issued
01 December 2006
Access level
metadata only access
Resource Type
conference paper
Author(s)
Takano C.
Nogueira A.
Mourao M.
Neto F.
Iguchi Y.
University of Sao Paulo
Abstract
The chromites -carbon composite pellets have been used for producing pre-reduced material for charging into Smelting Arc Furnace (SAF) for production of High Carbon Ferro -Chrome (HCFeCr). This work intends to improve the knowledge on the behavior of self-reducing agglomerates of chromites, at high temperature, aiming to produce HCFeCr by directly charging these agglomerates into the smelting furnace. Brazilian fine chromites with ~40% Cr2O3 mixed with petroleum coke fines and fluxing agents (CaO and SiO2) were agglomerated with Portland cement. The expected initial slag composition was composed with addition of fluxing agent to determine the liquidus temperature of the resulting initial slag (1773K and 1923K). The pellets produced were submitted at 1773K and the fractional reaction as a function of time was determined. The results have been shown that pellets containing components which resulted in a liquid slag phase at high temperature presented significant be tter reduction behavior than that of with pellet which the liquid slag phase was formed at low temperature.
Start page
69
End page
72
Language
English
OCDE Knowledge area
Ingeniería de procesos Ingeniería de materiales
Scopus EID
2-s2.0-52649175097
Source
4th International Congress on the Science and Technology of Ironmarking, ICSTI 2006, Proceedings
Conference
4th International Congress on the Science and Technology of Ironmarking, ICSTI 2006
Sources of information: Directorio de Producción Científica Scopus