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

Kód výsledku v 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>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

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

Popis výsledku anglicky

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

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/TA04010036" target="_blank" >TA04010036: Výzkum, vývoj a ověření nových progresivních technologií výroby vysoce legovaných ocelí s cílem snížení energetické náročnosti výroby pomocí řízené redukce strusky na intenzifikované EOP a legování dusíku kombinovanou O2-N tryskou za sníženého tlaku</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

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

Počet stran výsledku

7

Strana od-do

156-162

Název nakladatele

Tanger

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

3. 6. 2015

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000374706100022