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G. Avdeev

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Author: G. Avdeevclear all
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10th International Multidisciplinary Scientific GeoConference SGEM2010
Publication

OPTIMIZATION OF THE HEAT-TREATMENT REGIME OF A SINTERED GLASS-CERAMIC FROM MSWI BOTTOM ASH

(SGEM Scientific GeoConference, 2010, E. Karamanova, L. M. Schabbach, B. Rangelov, G. Avdeev, I. Lancellotti, A. Karamanov)

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The aim of this work is the optimization of sinter-crystallization regime of a glassceramic from a municipal solid waste incineratior (MSWI) bottom ash. The parent waste was melted at 1400oC, milled below 75 $\mu$m and the obtained glass powders were pressed at 100 MPa. The optimal temperature for sinter-crystallization was estimated by DTA, dilatometry and XRD. Subsequently, the degrees of sintering, obtained at different heating rates (between 2 and 40oC/min) and 1 h step at 950oC were estimated by the linear sh...

Recycling2010
8th International Scientific Conference - SGEM2008
Publication

SINTERING AND PHASE FORMATION IN CERAMIC MATERIALS FROM BLAST FURNACE SLAG

(SGEM Scientific GeoConference, 2008, E. Karamanova, G. Avdeev, I. Penkov, A. Karamanov)

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The work discuses three ceramic compositions containing no feldspars and based on 30, 50 and 70 wt \% Blast Furnace Slag (BFS), respectively, 30 \% kaolin and quartz sand. Initially, the processes of phase formation and densification were estimated using nonisothermal Differential Thermal Analysis and Dilatometry. After that, the degree of sintering at different temperatures and times was measured by linear shrinkage and water absorption. The phase composition and the structure of final materials were evaluated wi...

Ecology and Environmental Protection2008
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