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M.

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Showing 1-4 of 4 records
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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
10th International Multidisciplinary Scientific GeoConference SGEM2010
Publication

SINTERED MATERIALS FROM INCINERATOR SECONDARY RESIDUES

(SGEM Scientific GeoConference, 2010, B. Dzhantov, B. Ranguelov, E. Karamanova, F. Andreola, L. Barbieri, A. Karamanov)

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The possibility to obtain new eco-compatible building materials by milling, pressing and direct sintering of secondary raw materials (SRM) derived from a physical/mechanical treatment of municipal solid waste incinerator (MSWI) bottom ashes is discussed. The chemical compositions and particle size distribution of used SRM press powders were evaluated using XRF analysis and by laser granulometer, respectively. The thermal and densification behaviours were studied by non-isothermal DTA-TG and dilatometric techniques...

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
7th International Scientific Conference - SGEM2007
Publication

RECYCLING OF CRT WASTE GLASS IN PORCELAIN STONEWARE PRODUCTION

(SGEM Scientific GeoConference, 2007, E. Karamanova, F. Andreola, I. Lancelloti, L. Barbieri, A. Karamanov)

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The feasibility to substitute feldspar raw materials in a porcelain stoneware body with waste Cathode Ray Tube (CRT) glass was investigated. Various compositions, containing different percentages of feldspars and CRT glass, were compared. The densification process was studied by non-isothermal dilatometry and the degree of sintering was evaluated by pycnometric techniques. The structure and phase composition of the final ceramics were studied by SEM and XRD, respectively. The technological parameters and the mecha...

Recycling2007
Showing 1-4 of 4 records
1