Umeå universitets logga

umu.sePublikationer
Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Thermal decrepitation and thermally-induced cracking of limestone used in quicklime production
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Institutionen för tillämpad fysik och elektronik.ORCID-id: 0000-0003-0264-0119
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Institutionen för tillämpad fysik och elektronik. (Thermochemical Energy Conversion Laboratory (TEC-Lab))ORCID-id: 0000-0003-1095-9154
Visa övriga samt affilieringar
2022 (Engelska)Ingår i: Minerals, E-ISSN 2075-163X, Vol. 12, nr 10, artikel-id 1197Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

To produce quicklime, high calcium carbonate rocks, including limestone, are burned in industrial kilns at 1100–1450 °C. As a consequence of the high temperatures, the carbonate rock can break and decrepitate into fine material, causing operational problems and material losses. In the present paper, an industrial case study on thermal decrepitation was performed on Boda Limestone from the Jutjärn quarry in Dalarna, Sweden. We analyzed 80 limestone samples for thermal decrepitation; furthermore, the correlation with chemical composition was statistically analyzed. The experiments were complemented by a detailed analysis of thermally-induced cracking at a range of temperatures (ambient, 500 °C, 800 °C, and 1150 °C) for two limestone samples with similar chemical compositions but with very different decrepitation behaviors. Decrepitation was analyzed by an in-house method, the chemical composition by XRF, and the thermally-induced cracking was investigated by SEM and image analysis. No strong correlation was found between thermal decrepitation and the chemical composition of the limestone. For the sample with low thermal decrepitation, a dense narrow network of fractures was found after full calcination; however, this network was not observed in the sample with high thermal decrepitation. A plausible explanation for the different decrepitation behaviors is that this fracture network releases internal stress and stabilizes the calcined rock. The obtained results can help in predicting limestone thermal decrepitation, enabling increased resource efficiency in quicklime production.

Ort, förlag, år, upplaga, sidor
MDPI, 2022. Vol. 12, nr 10, artikel-id 1197
Nyckelord [en]
Boda Limeston, thermal decrepitation, XRF analysis, SEM analysis, image analysis, Jutjärn quarry, textural and microstructural investigations
Nationell ämneskategori
Kemiteknik Materialkemi
Identifikatorer
URN: urn:nbn:se:umu:diva-199688DOI: 10.3390/min12101197ISI: 000873405300001Scopus ID: 2-s2.0-85140890315OAI: oai:DiVA.org:umu-199688DiVA, id: diva2:1698825
Forskningsfinansiär
Energimyndigheten, 47198-1Vinnova, 2019-02548Tillgänglig från: 2022-09-26 Skapad: 2022-09-26 Senast uppdaterad: 2024-01-17Bibliografiskt granskad

Open Access i DiVA

fulltext(3657 kB)359 nedladdningar
Filinformation
Filnamn FULLTEXT01.pdfFilstorlek 3657 kBChecksumma SHA-512
29daca38e05da3ff6fe162eec12f8b89d9cc2708d9b9ba47019a0600d41cbf797d9965431539ba1a0fb0b38b5090409f6d77013c16927a34a27a0506e8a080bb
Typ fulltextMimetyp application/pdf

Övriga länkar

Förlagets fulltextScopus

Person

Cwik, KatarzynaBroström, MarkusEriksson, Matias

Sök vidare i DiVA

Av författaren/redaktören
Cwik, KatarzynaBroström, MarkusEriksson, Matias
Av organisationen
Institutionen för tillämpad fysik och elektronik
I samma tidskrift
Minerals
KemiteknikMaterialkemi

Sök vidare utanför DiVA

GoogleGoogle Scholar
Totalt: 361 nedladdningar
Antalet nedladdningar är summan av nedladdningar för alla fulltexter. Det kan inkludera t.ex tidigare versioner som nu inte längre är tillgängliga.

doi
urn-nbn

Altmetricpoäng

doi
urn-nbn
Totalt: 353 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf