Reduction of Chromium Oxides from the Slag at Production of Alloyed Steels

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F15%3A86093699" target="_blank" >RIV/61989100:27360/15:86093699 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Reduction of Chromium Oxides from the Slag at Production of Alloyed Steels
Original language description
In the steel industry, requirements for production optimization by the help of decreasing of energy and economical demands are increasing at the production of alloyed steels in the EAF. During the treatment of alloyed steel charging in the EAF containing chromium, its loss by oxidation and by the transition into slag happens. Chromium oxidation in the EAF happens during particular technological operations, however in different intensity. The main part of chromium loss from the melting happen s during the oxidation period in which oxygen is blown with the aim of ensuring of basic refining reactions and melting decarbonisation. The chromium transition and its increase in the form of chromium oxides in the slag influences its properties which is shown by the creation of slag crust with the high viscosity which decreases the slag reactivity and prevents it from creation of foam slag during production of steel in the EAF. In the presenting paper, basic possibilities of Cr2O3 reduction from the slag at using of various reduction agents, application ways and technology modification of melting are given together with the proposal of theoretical calculation of consumption of chosen refining agents presenting silicon and aluminium for the conditions of steelwork VHM a.s
Czech name
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Czech description
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Project
<a href="/en/project/TA04010036" target="_blank" >TA04010036: Research and development of new advanced technologies for the production of high-alloy steels in order to reduce energy intensity of production by controlled reduction of slag at EAF and nitrogen alloying combined via O2-N nozzle under reduced pressure</a><br>
Continuities
S - Specificky vyzkum na vysokych skolach

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
METAL 2015 : 24th International Conference on Metallurgy and Materials : conference proceedings : June 3rd-5th 2015, Hotel Voroněž I, Brno, Czech Republic, EU
ISBN
978-80-87294-62-8
ISSN
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e-ISSN
neuvedeno
Number of pages
7
Pages from-to
156-162
Publisher name
Tanger
Place of publication
Ostrava
Event location
Brno
Event date
Jun 3, 2015
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000374706100022

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