Abstract
In this paper, we present results of a study about the possibilities of utilizing talc ore mining tailings as a refractory raw material aiming at magnesium aluminate MgAl2O4 spinel composition. The mine tailings are rich in magnesite but contain also other minerals such as talc, chlorite, dolomite, and iron sulphides. As alumina source for spinel synthesis, we studied also another secondary raw material, an aluminium hydroxide precipitate, a by-product generated from the pickling process of aluminium anodizing. The goal of this paper is to study and compare a pure Mg–Al–O system and the corresponding Mg–Al–O system with some impurities. The formed phase and microstructures were examined by XRD, FESEM, and EDS studies. The thermal behaviour was studied using thermogravimetric analysis.
| Original language | Estonian |
|---|---|
| Pages (from-to) | 145-149 |
| Number of pages | 5 |
| Journal | Proceedings of the Estonian Academy of Sciences |
| Volume | 68 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 1 Jan 2019 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- Magnesium aluminate spinel
- Mining tailings
- Refractory ceramics
- Value from waste
Cite this
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Magnesite-rich mining tailings as a raw material for refractory ceramics : Microstructural and thermal analysis. / Karhu, Marjaana; Lagerbom, Juha; Solismaa, Soili; Huttunen-Saarivirta, Elina.
In: Proceedings of the Estonian Academy of Sciences, Vol. 68, No. 2, 01.01.2019, p. 145-149.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Magnesite-rich mining tailings as a raw material for refractory ceramics
T2 - Microstructural and thermal analysis
AU - Karhu, Marjaana
AU - Lagerbom, Juha
AU - Solismaa, Soili
AU - Huttunen-Saarivirta, Elina
PY - 2019/1/1
Y1 - 2019/1/1
N2 - In this paper, we present results of a study about the possibilities of utilizing talc ore mining tailings as a refractory raw material aiming at magnesium aluminate MgAl2O4 spinel composition. The mine tailings are rich in magnesite but contain also other minerals such as talc, chlorite, dolomite, and iron sulphides. As alumina source for spinel synthesis, we studied also another secondary raw material, an aluminium hydroxide precipitate, a by-product generated from the pickling process of aluminium anodizing. The goal of this paper is to study and compare a pure Mg–Al–O system and the corresponding Mg–Al–O system with some impurities. The formed phase and microstructures were examined by XRD, FESEM, and EDS studies. The thermal behaviour was studied using thermogravimetric analysis.
AB - In this paper, we present results of a study about the possibilities of utilizing talc ore mining tailings as a refractory raw material aiming at magnesium aluminate MgAl2O4 spinel composition. The mine tailings are rich in magnesite but contain also other minerals such as talc, chlorite, dolomite, and iron sulphides. As alumina source for spinel synthesis, we studied also another secondary raw material, an aluminium hydroxide precipitate, a by-product generated from the pickling process of aluminium anodizing. The goal of this paper is to study and compare a pure Mg–Al–O system and the corresponding Mg–Al–O system with some impurities. The formed phase and microstructures were examined by XRD, FESEM, and EDS studies. The thermal behaviour was studied using thermogravimetric analysis.
KW - Magnesium aluminate spinel
KW - Mining tailings
KW - Refractory ceramics
KW - Value from waste
UR - http://www.scopus.com/inward/record.url?scp=85067629915&partnerID=8YFLogxK
U2 - 10.3176/proc.2019.2.05
DO - 10.3176/proc.2019.2.05
M3 - Article
VL - 68
SP - 145
EP - 149
JO - Proceedings of the Estonian Academy of Sciences
JF - Proceedings of the Estonian Academy of Sciences
SN - 1736-6046
IS - 2
ER -