Utilization of red mud in the cement industry

Abstract

In the present thesis the potential utilization of ferroalumina, a by-product that derives from the dewatering of red mud, as a raw material as well as an additive material in the cement production route is examined. Red mud is the main by-product that derives from the digestion of bauxite ores during Bayer process in order to produce alumina. It comprises from the ore part that has not reacted, the part that has reacted and has formed other than the desired compounds, from supplementary materials that were introduced during the procedure and from aluminium hydroxides that were not recovered. The removal of red mud’s water content leads to the production of ferroalumina. Although there are many ways of removing the water, the use of a filter press has many advantages. The laboratory study of the water removal from red mud by means of a filter press led to the formation of a cake with ~35%wt of water. Parameters, such as the filter type and the material that it comprises were examined w ...
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DOI
10.12681/eadd/27739
Handle URL
http://hdl.handle.net/10442/hedi/27739
ND
27739
Alternative title
Αξιοποίηση της ερυθράς ιλύος στις βιομηχανίες τσιμέντου
Author
Vangelatos, Ioannis (Father's name: Vasileios)
Date
2008
Degree Grantor
University of Patras
Committee members
Κουτσούκος Π.
Νικολόπουλος Π.
Σταματάκης Μ.
Φτίκος Χ.
Αγγελόπουλος Γ.
Ματαράς Δ.
Παρασκευά Χ.
Discipline
Engineering and Technology
Chemical Engineering
Environmental Engineering
Keywords
Red mud; Ferroalumina; Filter press; Cement; Water-soluble chromium; Bauxite residue; Environmental behaviour
Country
Greece
Language
Greek
Description
tbls., fig.
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