Impact of Fly Ash as a Raw Material on the Properties of Refractory Forsterite–Spinel Ceramics

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F20%3APU137306" target="_blank" >RIV/00216305:26110/20:PU137306 - isvavai.cz</a>

Result on the web

<a href="https://www.mdpi.com/2075-163X/10/9/835" target="_blank" >https://www.mdpi.com/2075-163X/10/9/835</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/min10090835" target="_blank" >10.3390/min10090835</a>

Result language

angličtina

Original language name

Impact of Fly Ash as a Raw Material on the Properties of Refractory Forsterite–Spinel Ceramics

Original language description

This article examines the process for the synthesis of forsterite-spinel (2MgO center dot SiO2/MgO center dot Al2O3) refractory ceramics from fly ash and alumina as sources of aluminum oxide. Raw materials were milled, mixed in different ratios and sintered at 1500 degrees C for 2 h. Sintered samples were characterized by XRD, thermal analyses and SEM. Porosity, water absorption, bulk density, refractoriness, refractoriness under load and thermal shock resistance were also investigated. The impact of fly ash as a raw material was investigated in accordance with the resulting properties and microstructure of samples with fly ash and alumina as the raw materials. Due to the positive effect of flux oxides (iron oxides and alkalis) on sintering, the mullite contained in fly ash completely decomposed into silica and alumina, which, together with magnesium oxide, formed spinel. This led to improved microstructural and mechanical properties and thermal shock resistance. In particular, mixtures with 10 wt.% and 20 wt.% of fly ash had the most promising results compared to alumina mixtures. Both modulus of rupture and thermal shock resistance were improved, while the impact on refractory properties was minimal. The novelty of this research lies in the recycling of fly ash, a by-product from coal-burning power plants, into a raw material for the production of forsterite-spinel refractory ceramics.

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

—

OECD FORD branch

20504 - Ceramics

Project

<a href="/en/project/GA18-02815S" target="_blank" >GA18-02815S: Elimination of sulphur oxide emission during the firing of ceramic bodies based on fly ashes of class C</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2020

Confidentiality

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

Name of the periodical

Minerals

ISSN

2075-163X

e-ISSN

—

Volume of the periodical

10

Issue of the periodical within the volume

9

Country of publishing house

CH - SWITZERLAND

Number of pages

12

Pages from-to

1-12

UT code for WoS article

000580856500001

EID of the result in the Scopus database

2-s2.0-85098568236