Mixture of Granite Waste and LD Steel Slag for Use in Cement Production

Adriano da Costa Borges; Monica Castoldi Borlini Gadioli; Luiz Alberto Baptista Pinto; José Roberto de Oliveira

doi:10.4028/www.scientific.net/MSF.727-728.1535

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HomeMaterials Science ForumMaterials Science Forum Vols. 727-728Mixture of Granite Waste and LD Steel Slag for Use...

Mixture of Granite Waste and LD Steel Slag for Use in Cement Production

Abstract:

A great amount of granite waste and steel slag is generated daily in Brazil, being those constituted mainly by SiO₂ and CaO, respectively. The objective of this work was to characterize the material formed after melting and cooling of the mixture of granite waste and LD steel slag, with basicity (CaO/SiO₂) of 1.0, aiming to evaluate the technical feasibility of this to the Portland cement production. Two samples were prepared and melted. After the melting of the mixture, one sample was cooled in water and another in the furnace. The samples characterization was carried out through X-ray diffraction and scanning electron microscopy. The results showed that the new material formed presented amorphous state, to the samples cooled in water and akermanite and gehlenite phases, considered ideals for the hydraulic activity of the slags, in the sample cooled in the furnace. Therefore, the mixture of those two wastes can be a new alternative for the use of both, allied to the decrease of the environmental impact.

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Materials Science Forum (Volumes 727-728)

Pages:

1535-1540

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.727-728.1535

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Online since:

August 2012

Authors:

Adriano da Costa Borges, Monica Castoldi Borlini Gadioli, Luiz Alberto Baptista Pinto, José Roberto de Oliveira

Keywords:

Environment, Granite Waste, LD Steel Slag

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