Search Results - "Aula, Matti"

Characterisation of Binary Phase Mixtures of Magnesium-Aluminate Spinel and Calcium-Aluminates Using Time-Gated Raman Spectroscopy by Gyakwaa, Francis, Aula, Matti, Alatarvas, Tuomas, Vuolio, Tero, Shu, Qifeng, Huttula, Marko, Fabritius, Timo

“…The modification of MgO·Al2O3 spinel inclusions into less detrimental mixture phases of CaO–MgO–Al2O3 plays an essential role in refining calcium-treated…”
Get full text

Applicability of Time-Gated Raman Spectroscopy in the Characterisation of Calcium-Aluminate Inclusions by Gyakwaa, Francis, Aula, Matti, Alatarvas, Tuomas, Vuolio, Tero, Huttula, Marko, Fabritius, Timo

“…Calcium aluminate (CaO–Al2O3) phases play a critical role in the study of non-metallic inclusions in aluminium killed, and calcium treated steels. In this…”
Get full text

Industrial Ladle Furnace Slag Composition Analysis with Optical Emissions from the Arc by Pauna, Henri, Aula, Matti, Seehausen, Jonas, Klung, Jens-Sebastian, Huttula, Marko, Fabritius, Timo

“…With the strict standards for steel quality and high production rates, the demand for faster and more convenient slag composition analysis for both electric…”
Get full text

Preparation of Synthetic Titania Slag Relevant to the Industrial Smelting Process Using an Induction Furnace by Gupta, Avishek Kumar, Aula, Matti, Pihlasalo, Jouni, Mäkelä, Pasi, Huttula, Marko, Fabritius, Timo

“…A high titania slag that is used as a feedstock for TiO2 manufacturing is obtained by ilmenite smelting (FeO.TiO2). The composition of the slag obtained by…”
Get full text

Characterization of Synthetic Non-Metallic Inclusions Consisting of TiN, Ti2O3, and Oxides of Al2O3 and MgO·Al2O3 Spinel Using Raman Spectroscopy by Gyakwaa, Francis, Alatarvas, Tuomas, Shu, Qifeng, Aula, Matti, Fabritius, Timo

“…Steel quality and properties can be affected by the formation of complex inclusions, including Ti-based inclusions such as TiN and Ti2O3 and oxides like Al2O3…”
Get full text

Application of Raman Spectroscopy for Characterizing Synthetic Non-Metallic Inclusions Consisting of Calcium Sulphide and Oxides by Gyakwaa, Francis, Aula, Matti, Alatarvas, Tuomas, Vuolio, Tero, Shu, Qifeng, Huttula, Marko, Fabritius, Timo

“…The presence of non-metallic inclusions (NMI) such as sulphides and oxides may be detrimental to the control of the steel casting process and product quality…”
Get full text

Study of Synthetic Titania Slags Demonstrating Characteristics Similar to High Titania Ilmenite Slag by Avishek Kumar Gupta, Matti Aula, Harisankar Sreenivasan, Pasi Mäkelä, Marko Huttula, Timo Fabritius

“…The upgradation of the ilmenite ore, using a pyrometallurgy method, is performed using a carbothermic reduction of the ilmenite. A high titania slag is…”
Get full text

On-line Analysis of Cr2O3 Content of the Slag in Pilot Scale EAF by Measuring Optical Emission Spectrum of Electric Arc by Aula, Matti, Demus, Thorsten, Echterhof, Thomas, Huttula, Marko, Pfeifer, Herbert, Fabritius, Timo

“…Control of slag Cr2O3 content is essential in stainless steelmaking electric arc furnace (EAF). Excessive Cr2O3 content of slag lead to high Cr2O3 content…”
Get full text

Suitability of Self‐Reducing and Slag‐Forming Briquettes for Electric Arc Furnace Use Based on Laboratory Tests by Abdelrahim, Ahmed, Aula, Matti, Iljana, Mikko, Willms, Thomas, Echterhof, Thomas, Steinlechner, Stefan, Mombelli, Davide, Mapelli, Carlo, Omran, Mamdouh, Preiss, Stefan, Fabritius, Timo

“…The in‐plant recycling routes of side streams produced in electric arc furnace (EAF) steelmaking remain underexplored. Briquetting is an attractive technique…”
Get full text

Investigation on the Chemical and Thermal Behavior of Recycling Agglomerates from EAF by-Products by Willms, Thomas, Echterhof, Thomas, Steinlechner, Stefan, Aula, Matti, Abdelrahim, Ahmed, Fabritius, Timo, Mombelli, Davide, Mapelli, Carlo, Preiss, Stefan

“…In addition to the blast furnace converter route, electric steel production in the electric arc furnace (EAF) is one of the two main production routes for…”
Get full text

Analysis of Arc Emission Spectra of Stainless Steel Electric Arc Furnace Slag Affected by Fluctuating Arc Voltage by Aula, Matti, Mäkinen, Ari, Fabritius, Timo

“…Control of chromium oxidation in the electric arc furnace (EAF) is a significant problem in stainless steel production due to variations of the chemical…”
Get full text

Suitability of Self‐Reducing and Slag‐Forming Briquettes for Electric Arc Furnace Use Based on Laboratory Tests by Abdelrahim, Ahmed, Aula, Matti, Iljana, Mikko, Willms, Thomas, Echterhof, Thomas, Steinlechner, Stefan, Mombelli, Davide, Mapelli, Carlo, Omran, Mamdouh, Preiss, Stefan, Fabritius, Timo

“…The in‐plant recycling routes of several side streams produced in Electric Arc Furnace (EAF) steelmaking remain under‐explored. In article 2100472, Abdelrahim…”
Get full text

Analysis of Ilmenite Slag Using Laser-Induced Breakdown Spectroscopy by Avishek Kumar Gupta, Matti Aula, Erwan Negre, Jan Viljanen, Henri Pauna, Pasi Mäkelä, Juha Toivonen, Marko Huttula, Timo Fabritius

“…The feasibility of using laser-induced breakdown spectroscopy (LIBS) for the compositional analysis of ilmenite slag was explored. The slag was obtained from a…”
Get full text

Optical Emission Analysis of Slag Surface Conditions and Furnace Atmosphere during Different Process Stages in Electric Arc Furnace (EAF) by Aula, Matti, Mäkinen, Ari, Leppänen, Ahti, Huttula, Marko, Fabritius, Timo

“…In electric arc furnace (EAF) steelmaking the control of the overall process has traditionally been in the hands of the operator. The current level of…”
Get full text

Fabrication of Agglomerates from Secondary Raw Materials Reinforced with Paper Fibres by Stamp Pressing Process by Echterhof, Thomas, Willms, Thomas, Preiss, Stefan, Aula, Matti, Abdelrahim, Ahmed, Fabritius, Timo, Mombelli, Davide, Mapelli, Carlo, Steinlechner, Stefan, Unamuno, Iñigo

“…The use of secondary raw materials in metallurgical processes such as steelmaking is an important contribution to the circular economy aspired to by EU members…”
Get full text

Characterization of Process Conditions in Industrial Stainless Steelmaking Electric Arc Furnace Using Optical Emission Spectrum Measurements by Aula, Matti, Leppänen, Ahti, Roininen, Juha, Heikkinen, Eetu-Pekka, Vallo, Kimmo, Fabritius, Timo, Huttula, Marko

“…Emission spectroscopy is a potential method for gaining information on electric arc furnace (EAF) process conditions. Previous studies published in literature…”
Get full text

Hydrogen plasma smelting reduction process monitoring with optical emission spectroscopy – Establishing the basis for the method by Pauna, Henri, Ernst, Daniel, Zarl, Michael, Aula, Matti, Schenk, Johannes, Huttula, Marko, Fabritius, Timo

“…In the world of ever-increasing demand for carbon-free steel, hydrogen and recycling have an undeniable role in achieving net-zero carbon dioxide emissions for…”
Get full text

A Review of Mathematical Process Models for the Electric Arc Furnace Process by Hay, Thomas, Visuri, Ville-Valtteri, Aula, Matti, Echterhof, Thomas

“…The electric arc furnace is the main process unit in scrap‐based steelmaking. Owing to its importance, numerous mathematical models for predicting the course…”
Get full text

Quantifying the CaO and CaF2 Content of Industrial Ladle Furnace Slag with Optical Emissions Measured through the Casting Spout by Pauna, Henri, Aula, Matti, Huttula, Marko, Fabritius, Timo

“…CaO and CaF2 are important slag constituents and additive materials in secondary metallurgy. Optimization of the quantity of these compounds has a key role in…”
Get full text

Quantifying the CaO and CaF 2 Content of Industrial Ladle Furnace Slag with Optical Emissions Measured through the Casting Spout by Pauna, Henri, Aula, Matti, Huttula, Marko, Fabritius, Timo

Get full text