Valorization of Finnish mining tailings for use in the ceramics industry

Soili Solismaa (Corresponding Author), Arnold Ismailov, Marjaana Karhu, Harisankar Sreenivasan, Marja Lehtonen, Paivo Kinnunen, Mirja Illikainen, Marja Liisa Räisänen

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Abstract

The present study valorized Finnish mining tailings waste to identify opportunities for the use of ceramics technologies. On the basis of their mineralogical and chemical contents, the five selected tailings wastes represented felsic mining tailings (FMT) rich in quartz and alkali feldspars, mining tailings dominated by Mg- and Fe-bearing minerals (MgFeMT), and mining tailings rich in carbonate minerals (CMT). Preliminary pilot studies
indicated that the FMT materials are potential secondary raw materials for mullite-type ceramics. An Al additive was needed, since the Al2O3 content of the studied tailings was too low for mullitization. In addition, carbonate-bearing tailings with Ca silicates can be applicable for chemically bonded phosphate ceramic (CBPC) synthesis. Based on a literature review, FMT are viable source materials for the production of geopolymers, but a high initial Si:Al ratio (in quartz-rich FMT) may lead to partial geopolymerization. Preliminary results from the geopolymerization of pre-heated phlogopite mica mixed with metakaolin gave promising findings, with the formation of a geopolymer having
good compressive strength. The findings support the viability of MgFeMT materials rich in phlogopite mica for the production of alkali-activated ceramics.
Original languageEnglish
Pages (from-to)33-54
Number of pages22
JournalBulletin of the Geological Society of Finland
Volume90
DOIs
Publication statusPublished - 2018
MoE publication typeA1 Journal article-refereed

Fingerprint

tailings
ceramics
phlogopite
mica
ceramics industry
quartz
porcellanite
carbonate
mineral
literature review
compressive strength
viability
silicate
phosphate

Keywords

  • Mining tailings, utilization, geopolymer, phosphate ceramics, chemically bonded ceramics, mullitization, sintered bonded ceramics, tailings minerals, mineralogy,geochemistry

Cite this

Solismaa, S., Ismailov, A., Karhu, M., Sreenivasan, H., Lehtonen, M., Kinnunen, P., ... Räisänen, M. L. (2018). Valorization of Finnish mining tailings for use in the ceramics industry. Bulletin of the Geological Society of Finland, 90, 33-54. https://doi.org/10.17741/bgsf/90.1.002
Solismaa, Soili ; Ismailov, Arnold ; Karhu, Marjaana ; Sreenivasan, Harisankar ; Lehtonen, Marja ; Kinnunen, Paivo ; Illikainen, Mirja ; Räisänen, Marja Liisa. / Valorization of Finnish mining tailings for use in the ceramics industry. In: Bulletin of the Geological Society of Finland. 2018 ; Vol. 90. pp. 33-54.
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Solismaa, S, Ismailov, A, Karhu, M, Sreenivasan, H, Lehtonen, M, Kinnunen, P, Illikainen, M & Räisänen, ML 2018, 'Valorization of Finnish mining tailings for use in the ceramics industry', Bulletin of the Geological Society of Finland, vol. 90, pp. 33-54. https://doi.org/10.17741/bgsf/90.1.002

Valorization of Finnish mining tailings for use in the ceramics industry. / Solismaa, Soili (Corresponding Author); Ismailov, Arnold; Karhu, Marjaana; Sreenivasan, Harisankar; Lehtonen, Marja; Kinnunen, Paivo; Illikainen, Mirja; Räisänen, Marja Liisa.

In: Bulletin of the Geological Society of Finland, Vol. 90, 2018, p. 33-54.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - Valorization of Finnish mining tailings for use in the ceramics industry

AU - Solismaa, Soili

AU - Ismailov, Arnold

AU - Karhu, Marjaana

AU - Sreenivasan, Harisankar

AU - Lehtonen, Marja

AU - Kinnunen, Paivo

AU - Illikainen, Mirja

AU - Räisänen, Marja Liisa

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AB - The present study valorized Finnish mining tailings waste to identify opportunities for the use of ceramics technologies. On the basis of their mineralogical and chemical contents, the five selected tailings wastes represented felsic mining tailings (FMT) rich in quartz and alkali feldspars, mining tailings dominated by Mg- and Fe-bearing minerals (MgFeMT), and mining tailings rich in carbonate minerals (CMT). Preliminary pilot studiesindicated that the FMT materials are potential secondary raw materials for mullite-type ceramics. An Al additive was needed, since the Al2O3 content of the studied tailings was too low for mullitization. In addition, carbonate-bearing tailings with Ca silicates can be applicable for chemically bonded phosphate ceramic (CBPC) synthesis. Based on a literature review, FMT are viable source materials for the production of geopolymers, but a high initial Si:Al ratio (in quartz-rich FMT) may lead to partial geopolymerization. Preliminary results from the geopolymerization of pre-heated phlogopite mica mixed with metakaolin gave promising findings, with the formation of a geopolymer havinggood compressive strength. The findings support the viability of MgFeMT materials rich in phlogopite mica for the production of alkali-activated ceramics.

KW - Mining tailings, utilization, geopolymer, phosphate ceramics, chemically bonded ceramics, mullitization, sintered bonded ceramics, tailings minerals, mineralogy,geochemistry

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DO - 10.17741/bgsf/90.1.002

M3 - Article

VL - 90

SP - 33

EP - 54

JO - Bulletin of the Geological Society of Finland

JF - Bulletin of the Geological Society of Finland

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