Characterization and Microstructure Observation of Sintered Red Mud-fly Ash Mixtures at Various Elevated Temperature

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24210%2F15%3A00002934" target="_blank" >RIV/46747885:24210/15:00002934 - isvavai.cz</a>

Result on the web

<a href="https://api.elsevier.com/content/article/eid/1-s2.0-S0959652615003534" target="_blank" >https://api.elsevier.com/content/article/eid/1-s2.0-S0959652615003534</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jclepro.2015.04.010" target="_blank" >10.1016/j.jclepro.2015.04.010</a>

Result language

angličtina

Original language name

Characterization and Microstructure Observation of Sintered Red Mud-fly Ash Mixtures at Various Elevated Temperature

Original language description

This study investigated the characterization and microstructure observation of sintered red mud-fly ash mixtures at various elevated temperature. The detailed analysis of the phase evolution during sintering process of red mud and fly ash as the function of sintering temperature were explored. Phase evolution and microstructure observation were carried out by X-ray diffraction method (XRD) and scanning electron microscope (SEM) method. Thermal analysis was carried out by thermogravimetric and differential thermal (TG-DTA) analysis. The mineralogical evolution revealed that quartz and goethite originates from the parent composition of red mud and fly ash. Microstructure observation revealed the transformation of globular grains towards elongated grains during the sintering process. Mass loss around 11% is observed in the thermal analysis patterns due to the dehydration, hydroxide-oxide phase transitions from iron (primary phase) and aluminum (secondary phase). The phase transition, evolution and dissolution as the function of sintering temperature were correlated as the function of temperature and the amount of fly ash content. The disappearance and appearance of the different phases confirms the decomposition and formation reaction suggested by thermal analysis.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20501 - Materials engineering

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2015

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Cleaner Production

ISSN

0959-6526

e-ISSN

—

Volume of the periodical

101

Issue of the periodical within the volume

2015

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

9

Pages from-to

368-376

UT code for WoS article

000356988200040

EID of the result in the Scopus database

2-s2.0-84955755464