Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Formation of Spinel Phases in Oxidized BOF Slag under Different Cooling Conditions
School of Material Science and Engineering, Beifang University of Nationalities, Yinchuan 750021, China.
China Building Material Academy, Key State Laboratory of Green Building Materials, Beijing 100024, China.
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Mineralteknik och metallurgi. School of Material Science and Engineering, Beifang University of Nationalities.
School of Material Science and Engineering, Beifang University of Nationalities, Yinchuan 750021, China.
Vise andre og tillknytning
2017 (engelsk)Inngår i: Steel Research International, ISSN 1611-3683, E-ISSN 1869-344X, Vol. 88, nr 11, artikkel-id 1700066Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

To enhance utilization of wastes generated from steelmaking, a BOF slag sample from Ning Steel group in China is treated by oxidizing at 1500 °C for 30 min and then cooled by different methods. The treated samples are characterized, in combination with calculations using FactSage 6.4. XRD results show that iron oxides in BOF slag are converted largely by the oxidation to spinel phases, Fe3O4 and MgFe2O4, which also eliminates free CaO and MgO. EDS analyses show Fe element existing in di-calcium silicate and glass phase, which are Fe3+ ions formed by oxidation. An incorporation of Fe3+ ions into crystal structures has stabilized high temperature polymorph of C2S, β-C2S, and α’-C2S, in the treated slag samples. Fe3+ ions may also act as a network former to facilitate glass formation. This may make it possible for the glass and α’-C2S phase to complement each other, leading to a higher hydraulicity, while the BOF slag, after the spinel separation, is blended in cements. Some suggestions are proposed, based on the present and early studies, to enhance hydraulicity for the BOF slag, as well as grain sizes of spinel phases, which may result in economic and environmental benefits for steel and cement industries.

sted, utgiver, år, opplag, sider
John Wiley & Sons, 2017. Vol. 88, nr 11, artikkel-id 1700066
HSV kategori
Forskningsprogram
Processmetallurgi
Identifikatorer
URN: urn:nbn:se:ltu:diva-64098DOI: 10.1002/srin.201700066ISI: 000414464400011OAI: oai:DiVA.org:ltu-64098DiVA, id: diva2:1110709
Merknad

Validerad;2017;Nivå 2;2017-11-06 (andbra)

Tilgjengelig fra: 2017-06-16 Laget: 2017-06-16 Sist oppdatert: 2018-05-04bibliografisk kontrollert

Open Access i DiVA

Fulltekst mangler i DiVA

Andre lenker

Forlagets fulltekst

Personposter BETA

Yang, QixingEngström, Fredrik

Søk i DiVA

Av forfatter/redaktør
Yang, QixingEngström, FredrikDeng, Jiangyuan
Av organisasjonen
I samme tidsskrift
Steel Research International

Søk utenfor DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric

doi
urn-nbn
Totalt: 137 treff
RefereraExporteraLink to record
Permanent link

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