The study of firing of a ceramic body made from illite and fluidized bed combustion fly ash

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F17%3A00306216" target="_blank" >RIV/68407700:21110/17:00306216 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s10973-016-5477-8" target="_blank" >http://dx.doi.org/10.1007/s10973-016-5477-8</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10973-016-5477-8" target="_blank" >10.1007/s10973-016-5477-8</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The study of firing of a ceramic body made from illite and fluidized bed combustion fly ash

Popis výsledku v původním jazyce

Fly ash from coal combusting thermal power plants is a serious problem from the point of view of its storing and pollution of the environment. Currently, thermal power plants change the combustion technology from pulverized firing to fluidized bed combustion. A promising reutilization of the fly ash from fluidized bed combustion (FFA) shows itself in the ceramic industry. In this paper, the influence of the FFA content in illite-based ceramics on its thermophysical and elastic properties was investigated during heating and cooling stages of firing. The samples are made from a mixture of the illitic clay (60 mass%), various portion of FFA (0–40 mass%) and grog (40–0 mass%). The impulse excitation technique is used for the determination of Young’s modulus and the internal friction. Analyses that included DTA, TG, thermodilatometry, XRD and SEM are used to obtain the better understanding of the development of the phase transformations in the samples. It is found that a higher amount of FFA in the sample leads to a higher mass loss at low temperatures, a higher mass loss due to the decomposition of calcite, a less intensive shrinkage after firing, a lower bulk density and lower Young’s modulus during firing above 800 C and after cooling. After firing of the samples at 1100 C, the mechanical strength and Young’s modulus decrease with the FFA content. A linear relationship between Young’s modulus and the mechanical strength is observed.

Název v anglickém jazyce

The study of firing of a ceramic body made from illite and fluidized bed combustion fly ash

Popis výsledku anglicky

Fly ash from coal combusting thermal power plants is a serious problem from the point of view of its storing and pollution of the environment. Currently, thermal power plants change the combustion technology from pulverized firing to fluidized bed combustion. A promising reutilization of the fly ash from fluidized bed combustion (FFA) shows itself in the ceramic industry. In this paper, the influence of the FFA content in illite-based ceramics on its thermophysical and elastic properties was investigated during heating and cooling stages of firing. The samples are made from a mixture of the illitic clay (60 mass%), various portion of FFA (0–40 mass%) and grog (40–0 mass%). The impulse excitation technique is used for the determination of Young’s modulus and the internal friction. Analyses that included DTA, TG, thermodilatometry, XRD and SEM are used to obtain the better understanding of the development of the phase transformations in the samples. It is found that a higher amount of FFA in the sample leads to a higher mass loss at low temperatures, a higher mass loss due to the decomposition of calcite, a less intensive shrinkage after firing, a lower bulk density and lower Young’s modulus during firing above 800 C and after cooling. After firing of the samples at 1100 C, the mechanical strength and Young’s modulus decrease with the FFA content. A linear relationship between Young’s modulus and the mechanical strength is observed.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20504 - Ceramics

Projekt

<a href="/cs/project/GBP105%2F12%2FG059" target="_blank" >GBP105/12/G059: Kumulativní časově závislé procesy ve stavebních materiálech a konstrukcích</a><br>

Návaznosti

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

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Journal of Thermal Analysis and Calorimetry

ISSN

1388-6150

e-ISSN

1588-2926

Svazek periodika

127

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

HU - Maďarsko

Počet stran výsledku

11

Strana od-do

79-89

Kód UT WoS článku

000392337000009

EID výsledku v databázi Scopus

2-s2.0-84964426643