Výsledky vyhledávání - "Aula, M. (Matti)"

Dissertation/ Thesis

Optical emission from electric arc furnaces

Autor: Aula, M. (Matti)

The main cause of temperature and composition fluctuations in the electric arc furnace (EAF) process is the scrap used as a raw material. Process conditions in EAF can vary significantly from heat to heat because there is no accurate information of s

Externí odkaz: http://urn.fi/urn:isbn:9789526210926

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Hydrogen plasma smelting reduction process monitoring with optical emission spectroscopy:establishing the basis for the method

Autor: Pauna, H. (Henri), Ernst, D. (Daniel), Zarl, M. (Michael), Aula, M. (Matti), Schenk, J. (Johannes), Huttula, M. (Marko), Fabritius, T. (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 the steel industry. However, even though steel is one of the most recycled materials globa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2423::9fb17f3c916272840bef275ce925fe4c
http://urn.fi/urn:nbn:fi-fe2022102663306

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Characterization of synthetic non-metallic inclusions consisting of TiN, Ti₂O₃, and oxides of Al₂O₃ and MgO·Al₂O₃ spinel using Raman spectroscopy

Autor: Gyakwaa, F. (Francis), Alatarvas, T. (Tuomas), Shu, Q. (Qifeng), Aula, M. (Matti), Fabritius, T. (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 and MgO·Al₂O₃ (MA). This study assessed the prospective use of Raman spectroscop

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2423::4b52e771966731dc14171cbe6fdfea17
http://urn.fi/urn:nbn:fi-fe2021111755755

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Quantifying the CaO and CaF₂ content of industrial ladle furnace slag with optical emissions measured through the casting spout

Autor: Pauna, H. (Henri), Aula, M. (Matti), Huttula, M. (Marko), Fabritius, T. (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 adjusting the slag chemistry for optimal refining properties. In this study, the CaO and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2423::27a59866807135808658bd4c67ed32ff
http://urn.fi/urn:nbn:fi-fe2021101551246

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Quantification of synthetic nonmetallic inclusion multiphase mixtures from a CaO–Al2O3–MgO–CaS system using Raman spectroscopy

Autor: Gyakwaa, F. (Francis), Aula, M. (Matti), Alatarvas, T. (Tuomas), Shu, Q. (Qifeng), Huttula, M. (Marko), Fabritius, T. (Timo)

Raman spectroscopy has features such as its relatively easy sample preparation. Therefore, its application plays a role in nonmetallic inclusion studies. Herein, use of Raman spectroscopy to quantify multiphase synthetic inclusion mixtures consisting

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2423::40dc5d0e4aa8bca21f2e51652e2733df
http://urn.fi/urn:nbn:fi-fe2020111390353

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On-line analysis of Cr₂O₃ content of the slag in pilot scale EAF by measuring optical emission spectrum of electric arc

Autor: Aula, M. (Matti), Demus, T. (Thorsten), Echterhof, T. (Thomas), Huttula, M. (Marko), Pfeifer, H. (Herbert), Fabritius, T. (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 after the EAF tapping, since the solid precipitates forming in high Cr₂O₃ conte

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2423::ab0dfb3f83bd7349826f45df337d0421
http://urn.fi/urn:nbn:fi-fe201804056340

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Preparation of Synthetic Titania Slag Relevant to the Industrial Smelting Process Using an Induction Furnace

Autor: Gupta, A. K. (Avishek Kumar), Aula, M. (Matti), Pihlasalo, J. (Jouni), Mäkelä, P. (Pasi), Huttula, M. (Marko), Fabritius, T. (Timo)

Publikováno v: Applied Sciences, Vol 11, Iss 1153, p 1153 (2021)
Applied Sciences
Volume 11
Issue 3

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 smelting is dependent on the composition of the mineral used for slag preparation, i.e., ilmen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::2a7bdae6bfa06a60788136a9a7172dbc

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Application of Raman spectroscopy for the characterisation of synthetic non-metallic inclusions found in Al-killed calcium treated steels

Autor: Gyakwaa, F. (Francis)

Non-metallic inclusions form an essential parameter for assessing steel cleanliness. The chemical composition of the inclusions and content found in the steel matrix can be detrimental to both the steelmaking process and steel properties. Therefore,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2423::0117e01edddb943821a68400dcc56c63
http://urn.fi/urn:isbn:9789526227290

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Electric arc characterisation and furnace process monitoring with optical emission spectroscopy and image analysis

Autor: Pauna, H. (Henri)

Electric arc furnaces (EAFs) and ladle furnaces (LFs) are the main recycling units for scrap metal. With lower CO₂ emissions than traditional ore-based steelmaking, the importance of EAFs can be expected to increase in the future. Increasing steel

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2423::c072bd9aa9c242e06b156a9ae30890dd
http://urn.fi/urn:isbn:9789526227313

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