Re-use of spent catalyst from oil-cracking refineries as supplementary cementing material--颗粒学报PARTICUOLOGY

Antiohos, S. K., Chouliara, E., & Tsimas, S. (2006). Re-use of spent catalyst from oil-cracking refineries as supplementary cementing material. China Particuology, 4(2), 73–76. https://doi.org/10.1016/S1672-2515(07)60238-3

Re-use of spent catalyst from oil-cracking refineries as supplementary cementing material

S.K. Antiohos ^a, E. Chouliara ^a, S. Tsimas ^a *

a School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechniou, Zografou Campus, GR-157 73 Athens, Greece

10.1016/S1672-2515(07)60238-3

Volume 4, Issue 2, April 2006, Pages 73-76

Received 2 January 2006, Accepted 9 March 2006, Available online 27 November 2007.

E-mail: stangits@central.ntua.gr

Highlights

Abstract

Advanced technological achievements and the continuous growth of economy have made the disposal, recycle and reuse of industrial by-products a severe challenge. The cement industry is considered one of the key sectors in this effort in successfully (in terms of not extenuating but improving some of the properties of the final product) absorbing large quantities of solid wastes, either as aggregates or as secondary cementitious materials. This not only contributes to the creation of an energy and CO₂-emission depository (as commonly used raw materials are spared), but also simultaneously alleviates the acute environmental burden caused by the irresponsible disposal of such by-products. In this study, the possibility of reusing spent fluid catalytic-cracking catalyst (FCC) as a supplementary cementing material (SCM) was examined. A series of tests were conducted, initially aiming at characterizing the material and thereafter evaluating its pozzolanic activity and its effect on the mechanical properties of blended cements. Major findings in this investigation revealed that the use of FCC as a mineral admixture in cement is feasible, strengthening the belief that siliceous glassy residues should represent a steady supply for the construction sector.

Graphical abstract

Keywords

spent catalyst; supplementary cementing material; reactive silica; efficiency factor; blended cement

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