| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Schenk, Johannes
Montanuniversität Leoben
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (46/46 displayed)
- 2024Oxygen Distribution at the Hot Spot in BOF Steelmakingcitations
- 2024The Optical Spectra of Hydrogen Plasma Smelting Reduction of Iron Ore: Application and Requirementscitations
- 2024Optimizing methane plasma pyrolysis for instant hydrogen and high-quality carbon productioncitations
- 2023Evaluation of Slag Foaming Behavior Using Renewable Carbon Sources in Electric Arc Furnace-Based Steel Productioncitations
- 2023Utilization of Renewable Carbon in Electric Arc Furnace-Based Steel Productioncitations
- 2023Impact of Iron Ore Pre-Reduction Degree on the Hydrogen Plasma Smelting Reduction Processcitations
- 2023Modeling the residence time of metal droplets in slag during BOF steelmakingcitations
- 2023Phase Transition of Magnetite Ore Fines During Oxidation Probed by In Situ High-Temperature X-Ray Diffractioncitations
- 2023Properties of liquid CaO–SiO2 and CaO–SiO2-‘Fe2O3’tot slags measured by a combination of maximum bubble pressure and rotating bob methodscitations
- 2023The Behavior of Phosphorus in the Hydrogen-Based Direct Reduction—Smelter Ironmaking Routecitations
- 2023The Behavior of Direct Reduced Iron in the Electric Arc Furnace Hotspotcitations
- 2022Assessment of the dissolution rate and behaviour of raw dolomite and limestone with different calcination degrees in primary steelmaking slagscitations
- 2022Investigations on the Interaction Behavior between Direct Reduced Iron and Various Meltscitations
- 2022Long-Term Reoxidation of Hot Briquetted Iron in Various Prepared Climatic Conditionscitations
- 2022Investigation on the influence of wood pellets on the reactivity of coke with CO2 and its microstructure propertiescitations
- 2022How to increase scrap recycling
- 2022A New Methodological Approach on the Characterization of Optimal Charging Rates at the Hydrogen Plasma Smelting Reduction Process Part 2citations
- 2022Surface Morphology and Structural Evolution of Magnetite-Based Iron Ore Fines During the Oxidationcitations
- 2022Hierarchical nature of hydrogen-based direct reduction of iron oxidescitations
- 2021Iron
- 2021Evaluation of Dissolution Rate and Behavior of MgO Carriers for Primary and Secondary Metallurgical Slags
- 2020Utilization of metallurgical slag with presence of novel CaO-MgO-SiO2-Al2O3 as a composite sorbent for wastewater treatment contaminated by ceriumcitations
- 2020Sustainable steelmaking - A strategic evaluation of the future potential of hydrogen in the steel industrycitations
- 2020Microstructural evolution of metallurgical coke: Evidence from Raman spectroscopycitations
- 2020From henry bessemer’s invention to comprehensive converter process optimization
- 2020A study on the stability fields of arc plasma in the hpsr processcitations
- 2020Methods and technologies for the processing of water-hydrocarbon emulsions and technogenic raw materials of metallurgical and petrochemical enterprisescitations
- 2020The effect of alkali on the reaction kinetics and strength of blast furnace cokecitations
- 2019Kinetics and Mechanisms of Dolime Dissolution in Steelmaking Slagcitations
- 2019Diffusive steel scrap melting in carbon-saturated hot metal-Phenomenological investigation at the solid-liquid interfacecitations
- 2019Analytical and numerical determination of the heat transfer coefficient between scrap and hot metal based on small-scale experimentscitations
- 2018Kinetics of hydrogen plasma smelting reduction of iron oxides
- 2018Analysis of the Alkali Flow in Ironmaking Reactors by a Thermochemical Approachcitations
- 2017Calculation Model to Quantify the Amount of Carry-Over Slag From Primary Metallurgical Plants
- 2017Influence of Magnesium Oxide content on kinetics of lime dissolution in steelmaking slagscitations
- 2017Calculation model to quantify the amount of carry-over slag from primary metallurgical aggregates
- 2016Determination of the specific surface area of cokes and chars for simulated process conditions of blast furnace and smelting reduction routes
- 2016Influence of slag properties on the alkali-cycle of a blast furnace
- 2016Effect of Alkaline Elements on Coke Structure under Blast Furnace Process Conditions
- 2016Experimental Simulation of the Interaction of Slag and Hot Metal with Coke at the Bosh Region of Blast Furnace
- 2016Study on Oxide Inclusion Dissolution in Secondary Steelmaking Slags using High Temperature Confocal Scanning Laser Microscopycitations
- 2016Evaluation of the Potential for Reduction of CO2 Emissions at the Secondary Metallurgy
- 2012Integration of the blast furnace route and the FINEX ®- process for low CO 2 hot metal productioncitations
- 2009Fluidized-bed technology for the production of iron products for steelmaking
- 2009Evaluation of the Limiting Regime in Iron Ore Fines Reduction with H2-Rich Gases in Fluidized Beds: Fe2O3 to Fe3O4citations
- 2008Development and current status of the COREX® process with special focus on COREX Baosteel
Places of action
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document
Influence of slag properties on the alkali-cycle of a blast furnace
Abstract
Alkali metals are generally known as harmful elements for ironmaking processes. Although a high ratio of the input is discharged by the slag during tapping, small amounts of potassium and sodium are evaporated into the furnace from the slag phase. Furthermore, the thermochemical and physical properties lead to an undesirable behavior. The formation of alkali compounds in the blast furnace is determined by the oxygen potential and the temperature. This two parameters change over the blast furnace height, consequently the alkali compounds undergo oxidation and reduction as well as melting, solidification, evaporation and condensing. This leads to the formation of a circulating movement of alkalis. Enrichment in specific zones of the blast furnace and further destructive consequences are direct results of this alkali circle: for instance the formation of scaffolds, an increase in the dust emission, higher coke consumption, higher abrasion of the refractory and significant changes in the process gas flow. Operators of blast furnaces have two methods to reduce the negative effects of alkalis. One way, which is common for most operations, is the use of input materials with a low content of K and Na. The allowable alkali load for modern blast furnaces in western countries is lower than 4 kg/t hot metal[1]. This is mainly achieved by high quality iron ores and coal grades with a low ash-content. Another way is the optimization of process parameters, especially of the blast furnace slag. Lower tapping temperature as well as a low slag basicity can lead to higher output ratios of alkalis by the slag phase. Also higher masses of slag lead to an increased discharged of alkalis by tapping[1]. Equally the amount of circulating alkalis is lowered and the harmful effects are reduced. To determine the specific effects of slag properties on the circulation and enrichment of potassium and sodium, an alkali model for ironmaking reactors was developed. It enables the correlation between slag basicity, temperature and further process parameters with the alkali flow in the reactor and helps to get knowledge about fundamental reactions of K and Na inside the blast furnace. Also a prediction of the alkali distribution and enrichment in connection with the variation of slag properties can be done.