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

Materials Research

Geraldo Lúcio De Faria²  Érica Linhares Reis²  Fernando Gabriel Da Silva Araújo²  Cláudio Batista Vieira²  Fernando Leopoldo Von Krüger¹  Nelson Jannotti Jr.¹ 

[1] ,UFOP REDEMAT Ouro Preto MG ,Brazil

关键词: materials characterization;    manganese alloys;    solid residues;   

DOI  :  10.1590/S1516-14392008000400004

来源: SciELO

【 摘 要 】

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.

【 授权许可】

CC BY   
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