Development and Properties of New Mullite Based Refractory Grog

J 2021

Development and Properties of New Mullite Based Refractory Grog

ZEMÁNEK, David; Karel LANG; Lukáš TVRDÍK; Dalibor VŠIANSKÝ; Lenka NEVŘIVOVÁ et. al.

Základní údaje

Originální název

Development and Properties of New Mullite Based Refractory Grog

Autoři

ZEMÁNEK, David; Karel LANG; Lukáš TVRDÍK; Dalibor VŠIANSKÝ (203 Česká republika, domácí); Lenka NEVŘIVOVÁ; Petr ŠTURSA (203 Česká republika, domácí); Pavel KOVÁŘ; Lucie KERŠNEROVÁ a Karel DVOŘÁK (garant)

Vydání

Materials, MDPI, 2021, 1996-1944

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10505 Geology

Stát vydavatele

Švýcarsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 3.748

Kód RIV

RIV/00216224:14310/21:00119810

Organizační jednotka

Přírodovědecká fakulta

DOI

https://doi.org/10.3390/ma14040779

UT WoS

000624117700001

EID Scopus

2-s2.0-85100778678

Klíčová slova anglicky

mullite; refractory; high-alumina grog; kaolin; claystone

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 4. 5. 2021 15:20, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

The presented study is focused on optimization and characterization of a high-alumina refractory aggregate based on natural raw materials-kaolins, claystone, and mullite dust by-product (used to increase the alumina and mullite contents, respectively). In total, four individual formulas with the Al2O3 contents between 45 and 50 wt.% were designed; the samples were subsequently fired, both in a laboratory oven and an industrial tunnel furnace. The effects of repeated firing were examined during industrial pilot tests. Mineral and chemical compositions and microstructures, of both the raw materials and designed aggregates, were thoroughly investigated by the means of X-ray fluorescence spectroscopy, powder X-ray diffraction, and optical and scanning electron microscopies. Porosity, mineral composition, and mullite crystal-size development during the firing process were also studied. Based on the acquired results, the formula with the perspective to be used as a new mullite grog, featuring similar properties as the available commercial products, however, with reduced production expenses, was selected. The quality of grog determines to a large extent the properties of the final product. Hence, optimization of aggregates for specific refractories is of a great importance. The production of engineered aggregates provides the opportunity to utilize industrial by-products.

Návaznosti

TH02020321, projekt VaV

Název: Výroba mullitových ostřiv v šachtové peci

Investor: Technologická agentura ČR, Výroba mullitových ostřiv v šachtové peci

Citovat

ZEMÁNEK, David; Karel LANG; Lukáš TVRDÍK; Dalibor VŠIANSKÝ; Lenka NEVŘIVOVÁ; Petr ŠTURSA; Pavel KOVÁŘ; Lucie KERŠNEROVÁ a Karel DVOŘÁK. Development and Properties of New Mullite Based Refractory Grog. Materials. MDPI, 2021, roč. 14, č. 4, s. "779", 15 s. ISSN 1996-1944. Dostupné z: https://doi.org/10.3390/ma14040779.

@article{1765639,
   author = {Zemánek, David and Lang, Karel and Tvrdík, Lukáš and Všianský, Dalibor and Nevřivová, Lenka and Štursa, Petr and Kovář, Pavel and Keršnerová, Lucie and Dvořák, Karel},
   article_number = {4},
   doi = {https://doi.org/10.3390/ma14040779},
   keywords = {mullite; refractory; high-alumina grog; kaolin; claystone},
   language = {eng},
   issn = {1996-1944},
   journal = {Materials},
   title = {Development and Properties of New Mullite Based Refractory Grog},
   url = {https://www.mdpi.com/1996-1944/14/4/779},
   volume = {14},
   year = {2021}
}

TY  - JOUR
ID  - 1765639
AU  - Zemánek, David - Lang, Karel - Tvrdík, Lukáš - Všianský, Dalibor - Nevřivová, Lenka - Štursa, Petr - Kovář, Pavel - Keršnerová, Lucie - Dvořák, Karel
PY  - 2021
TI  - Development and Properties of New Mullite Based Refractory Grog
JF  - Materials
VL  - 14
IS  - 4
SP  - "779"
EP  - "779"
PB  - MDPI
SN  - 19961944
KW  - mullite
KW  - refractory
KW  - high-alumina grog
KW  - kaolin
KW  - claystone
UR  - https://www.mdpi.com/1996-1944/14/4/779
N2  - The presented study is focused on optimization and characterization of a high-alumina refractory aggregate based on natural raw materials-kaolins, claystone, and mullite dust by-product (used to increase the alumina and mullite contents, respectively). In total, four individual formulas with the Al2O3 contents between 45 and 50 wt.% were designed; the samples were subsequently fired, both in a laboratory oven and an industrial tunnel furnace. The effects of repeated firing were examined during industrial pilot tests. Mineral and chemical compositions and microstructures, of both the raw materials and designed aggregates, were thoroughly investigated by the means of X-ray fluorescence spectroscopy, powder X-ray diffraction, and optical and scanning electron microscopies. Porosity, mineral composition, and mullite crystal-size development during the firing process were also studied. Based on the acquired results, the formula with the perspective to be used as a new mullite grog, featuring similar properties as the available commercial products, however, with reduced production expenses, was selected. The quality of grog determines to a large extent the properties of the final product. Hence, optimization of aggregates for specific refractories is of a great importance. The production of engineered aggregates provides the opportunity to utilize industrial by-products.
ER  -

ZEMÁNEK, David; Karel LANG; Lukáš TVRDÍK; Dalibor VŠIANSKÝ; Lenka NEVŘIVOVÁ; Petr ŠTURSA; Pavel KOVÁŘ; Lucie KERŠNEROVÁ a Karel DVOŘÁK. Development and Properties of New Mullite Based Refractory Grog. \textit{Materials}. MDPI, 2021, roč.~14, č.~4, s.~''779'', 15 s. ISSN~1996-1944. Dostupné z: https://doi.org/10.3390/ma14040779.

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