Hot metal desulfurization by marble waste and fluorspar

Rem: Revista Escola de Minas

Felipe Nylo De Aguiar²  Felipe Fardin Grillo¹  Jorge Alberto Soares Tenório¹  José Roberto De Oliveira¹ 

[1] ,IFES PROPEMM

关键词: Marble waste;    fluospar;    hot metal desulfurization;    Resíduo de mármore;    fluorita;    dessulfuração de ferro-gusa;   

DOI  :  10.1590/S0370-44672012000200012

来源: SciELO

【 摘 要 】

The objective of this paper is to present an analysis of the use of residual marble mixtures in the pig iron desulfurization process. The study involved the use of: marble waste, fluorspar, lime, and hot metal. Four mixtures were made and added to a liquid hot metal - with known chemical composition - at a temperature of 1450ºC. The mass of each element was calculated from its chemical analysis and compared with an industrial mixture. All of the four mixtures used in the experiments were stirred by a mechanical stirrer. Samples were collected by vacuum sampling for times of 5, 10, 15, 20, and 30 minutes, and analysis was performed to check sulfur variation in the bath with time. The results were analyzed and they verified that it was possible to use marble waste as a desulfurizer.

【 授权许可】

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