A Review of Circular Economy Prospects for Stainless Steelmaking Slags
In the AOD process, the primary decarburization slag is reduced and adjusted to higher basicity for desulfurization and after this treatment tapped into a slag pot (single slag practice). In the case of demanding final sulfur target, the reduction slag can be tapped and an additional slag with higher basicity can be formed (2-slag practice).
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Toxicity assessment of the utilization of AOD slag as a …
The use of AOD slag as mineral fertilizer has aroused rare attention in plant nutrition and toxicology. AOD slag has the chemical compositions of CaO, SiO 2, MgO and FeO, capable of providing nutrients for plant growth (Baciocchi et al., 2015).Moreover, there is nearly no heavy metals of Cd, Hg, As, Pb, Tl, Co, V and Sb in the AOD slag.
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The role of P2O5 on the stability of β-C2S in AOD slag based …
The original AOD slag in the cold state contained more than 50 wt% low-hydration activity γ-C 2 S, which significantly affects the hydration activity. Therefore, the effect of the typical crystal stabilizer P 2 O 5 on the formation of a new phase and the enhancement in the mass fraction of high hydration activity β-C 2 S in AOD slag were studied, and the internal factors …
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Transforming AOD slag toward a highly reactive mineral …
AODS is a by-product of the secondary refining process of the AOD process of stainless steel and is a type of LFS [8, 9].Because fluxes such as calcium aluminate or CaF 2 are used in the ladle furnace refining process, the composition and properties of the refining slag are quite distinct from those of BOFS and EAFS [[10], [11], [12]].The CaO content of AODS is significantly higher …
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Preparation and Mechanism Analysis of Stainless Steel AOD …
To promote resourceful utilization of argon oxygen decarburization (AOD) slag, this research developed a new three-ash stabilized recycled aggregate with AOD slag, …
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Briquetting of Wastes from Pulp and Paper Industries by Using AOD …
Addition of 10–20% of AOD converter slag in combination with a heat-treatment at 850 °C can significantly improve (from 0% up to 92% retained weight after seven drops) the impact strength of the metallurgical briquettes based on CaO-contained wastes from pulp and paper industries.
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Treatments of AOD slag to produce aggregates …
Laboratory treatment tests of AOD slag from stainless steelmaking have been carried out by MiMeR, Minerals and Metals Recycling Research …
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AOD slag treatments to recover metal and to prevent slag …
Laboratory treatment tests of AOD slag from stainless steelmaking have been carried out by MiMeR, Minerals and Metals Recycling Research Centre, at Luleå University of Technology.
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Toxicity assessment of the utilization of AOD slag as a …
The application of argon oxygen decarburization (AOD) slag as a mineral fertilizer can be employed as an effective and environment-friendly approach. In this study, batch leaching tests and pot experiments were performed to assess the toxicity exhibited by AOD slag fertilization for pakchoi (Brassica chinensis L.) planting. pH, Eh and element leaching …
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AOD slag treatments to recover metal and prevent slag dusting
The University of Queensland's institutional repository, UQ eSpace, aims to create global visibility and accessibility of UQ's scholarly research.
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A review of use of metallurgical slag for its carbonation …
Steel slag treatment commonly employs ammonia salt solutions (such as ammonium nitrate (NH 4 NO 3), ammonium chloride (NH 4 Cl), ammonium acetate (CH 3 COONH 4), and ammonium sulfate ((NH 4) 2 SO 4)) and acid solutions (such as hydrochloric acid (HCl), nitric acid (HNO 3), and acetic acid (CH 3 COOH)) to selectively leach alkali metal ions …
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Dissolution Behavior of Fluorine from AOD Slag afte r …
AOD slag [4]. Early work on the AOD slag carried ou t by some of the present authors aimed mainly at the dusting prevention [2, 3]. The present work is thus undertaken to investigate dissolution behavior of F from AOD slag treated for dusting prevention a …
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The role of P2O5 on the stability of β-C2S in AOD slag based …
Treatments of AOD slag to produce aggregates for road construction. January 2011. ... the β-C2S mass fraction in AOD slag treated by water cooling at 680 °C reaches a maximum value of 47.5 wt ...
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Investigation of the acicular aragonite growth behavior in AOD
The AOD slag sample was then dried continuously for 6 h at 105 °C to remove free moisture and stored in a desiccator for future use. 2.2.2. Carbonation procedure. Based on the analysis of the mineral phase composition and carbonation thermodynamics of AOD slag, a direct wet accelerated carbonation-slurry phase route was developed, operating ...
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Enhanced carbon dioxide sequestration and Cr
In this paper, the AOD slag was selected to efficiently capture CO 2 under ambient temperature and pressure by a direct wet carbonation process. By comparing additive effect on the carbonation of AOD slag, the efficient reaction system "AOD slag + CH 3 COONH 4 " …
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Briquetting of Wastes from Pulp and Paper Industries by …
Addition of 10–20% of AOD converter slag in combination with a heat-treatment at 850 °C can significantly improve (from 0% up to 92% retained weight after seven drops) the …
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Stabilization of Stainless Steel Slag via Air Granulation
Some operations use slag additives to stabilize slag, but this solution is expensive and can limit the end use of slag due to inclusion of toxic elements. Air granulation was …
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Mechanism and Prevention of Disintegration of AOD Stainless Steel Slag
Yang Q X, Engström F, Tossavainen M, et al. AOD Slag Treatments to Recover Metal and to Prevent Slag Dusting [C] //... Xiang-yu ZHANG et al. Beneficial Reuse of Stainless Steel Slag and Its Heavy Metals Pollution Risk [J] Research of Environmental Sciences ... The AOD slag naturally falls to a powder on cooling due to its mineralogy. The ...
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Preparation and Mechanism Analysis of Stainless Steel AOD Slag …
To promote resourceful utilization of argon oxygen decarburization (AOD) slag, this research developed a new three-ash stabilized recycled aggregate with AOD slag, cement, fly ash (FA), and recycled aggregate (RA) as raw materials. The AOD slag was adopted as an equal mass replacement for fly ash.
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Transforming AOD slag toward a highly reactive mineral …
Using different types of supplementary cementitious materials, such as fly ash, slag powder, and limestone, to replace cement clinker is one of the most direct and effective ways to reduce CO 2 emissions in cement production.
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Treatments of AOD slag to produce aggregates for road …
Laboratory treatment tests of AOD slag from stainless steelmaking have been carried out by MiMeR, Minerals and Metals Recycling Research Centre, at Luleå University of Technology.
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AOD slag treatments to recover metal and to …
Laboratory treatment tests of AOD slag from stainless steelmaking have been carried out by MiMeR, Minerals and Metals Recycling Research Centre, at Luleå University of Technology.
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Transforming AOD slag toward a highly reactive mineral …
Using different types of supplementary cementitious materials, such as fly ash, slag powder, and limestone, to replace cement clinker is one of the most direct and effective ways to reduce CO …
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Enhanced carbon dioxide sequestration and Cr
In this paper, the AOD slag was selected to efficiently capture CO 2 under ambient temperature and pressure by a direct wet carbonation process. By comparing additive effect …
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Treatments of AOD Slag to Produce Aggregates for …
Figures 1 and 2 show a Tamman furnace and an induction furnace with set-ups, crucibles with MgO>98% and thin wall containing samples, mixtures of the AOD slag and the stabilizing agents, for ...
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Dissolution Behavior of Fluorine from AOD Slag …
Qixing Yang et al., "Treatments of AOD slag to Enhance Recycling and Resource Conservation", in Proceedings of SECURING THE FUTURE, International Conference on Mining and the Environment, Metals ...
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Mechanism and Prevention of Disintegration of AOD Stainless Steel Slag
The disintegrating mechanism of the AOD slag was analyzed in detail, and experimental research on prevention of disintegrating of AOD stainless steel slag was developed by adjusting the basicity of the slag and adding the quartz sand and borax. ... Yang Q X, Engström F, Tossavainen M, et al. AOD Slag Treatments to Recover Metal and to Prevent ...
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A review of use of metallurgical slag for its …
Steel slag treatment commonly employs ammonia salt solutions (such as ammonium nitrate (NH 4 NO 3), ammonium chloride (NH 4 Cl), ammonium acetate (CH 3 COONH 4), and ammonium sulfate ((NH 4) 2 SO …
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AOD slag treatments to recover metal and prevent slag …
The University of Queensland's institutional repository, UQ eSpace, aims to create global visibility and accessibility of UQ's scholarly research.
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AOD SLAG TREATMENTS TO RECOVER METAL AND TO …
Laboratory treatment tests of AOD slag from stainless steelmaking have been carried out by MiMeR, Minerals and Metals Recycling Research Centre, at Luleå University of Technology.
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