Characterization of manganese alloy residues for the recycling of FeSiMn and high-carbon FeMn fines

AUTOR(ES)

Faria, Geraldo Lúcio de, Reis, Érica Linhares, Araújo, Fernando Gabriel da Silva, Vieira, Cláudio Batista, von Krüger, Fernando Leopoldo, Jannotti Jr., Nelson

FONTE

Materials Research

DATA DE PUBLICAÇÃO

2008-12

RESUMO

Crushing residues of FeSiMn and high-carbon (HC) FeMn alloys were characterized in order to evaluate their recycling possibility. Particle size determination was performed by screening, followed by chemical analysis of each particle size range using plasma spectrometry (ICP-AES). The slag content was identified and quantified by optical microscopy. All of the fines with grain sizes above 1.18 mm presented alloy contents in excess of 99 wt. (%) and were determined to need no further concentration prior to recycling. However the contents of Mn, Fe, Si and P in the fraction below 1.18 mm did not meet the chemical specifications for commercial manganese alloys, except for phosphorous. Optical microscopy of the fraction below 1.18 mm, showed that 87.95% of the FeSiMn corresponded to the alloy and that the slag content was 12.05%. For the HC-FeMn sample, 95.07% corresponded to the alloy and only 4.93% to the slag. These results revealed potential for gravity concentration and recycling, reducing the residues in about 95% and improving the process productivity.

Documentos Relacionados

• Effect of Dilution on the Microstructure and Properties of CoCrMoSi alloy Coatings Processed on High-Carbon Substrate
• Structure and Phase Transition of Fe-Mn Alloy Powders Prepared by Gas Atomization
• Fabricação de lã de rocha a partir da escória da produção de ligas FeSiMn
• OBTENÇÃO DO ÓXIDO DE CROMO A PARTIR DE FINOS DE UMA LIGA FECR-ALTO CARBONO
• Kinetics Oxidation and Characterization of Cyclically Oxidized Layers at High Temperatures for FeMnSiCrNiCe and FeSiCrNi Alloys