This study presents a novel method for producing acicular aragonite using argon oxygen decarburization (AOD) slag while controlling the reaction temperature, reaction time, stirring speed, and the magnesium-to‑calcium stoichiometric ratio. This approach provides steel plants with an opportunity to d …
Details2.1 Materials. AOD steel slag was procured from the Jindal Stainless Steel Limited, Hisar city, India. Chemical constituents of cement and AOD steel slag are shown in Table 1.Figure 1 shows the SEM and EDS images of the AOD steel slag. The SEM image of AOD steel slag showed a flaky shape of particles that are somewhat similar to that of …
DetailsThe argon oxygen decarburization (AOD) process is used to make stainless steel and specialty grades of steel, including tool steels, silicon steels, low-alloy steels, and low …
DetailsA steel slag has been treated by air granulation, in order to enhance cementitious properties of the slag. Two samples with sizes ranged 1.68-2.38mm and 212-297μm and coded as Slag A and Slag B ...
DetailsPeople with a co-occurring AOD and mental health problem may have worse impairment, a more trying course of illness and are more difficult to treat than people with a singular problem. 12 Research shows people with a dual diagnosis may also have poorer treatment outcomes. 25 However, emerging evidence has clearly demonstrated that individuals …
DetailsThe 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 …
DetailsLaboratory treatment tests of AOD slag from stainless steelmaking have been performed by MiMeR. An induction furnace was used for slag reduction tests. The reduced slag was either water granulated ...
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DetailsAOD slag samples from steel works of Outokumpu Stainless Company were used to study F-dissolution relating to treatments for volume stabilization. Results from the slag tests and sample characterizations indicate that the slag re-melting with or without reduction and granulation with either water or gas have rather small effects on F …
DetailsThe 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 …
DetailsArgon oxygen decarburization (AOD) slag is the by-product of the stainless steel refining process, which has caused considerable environmental stress. In this work, ... is a seed-borne disease of melons caused by Acidovorax citrulli. Traditional chemical treatments for BFB are ineffective … Expand.
DetailsDust emissions are a nuisance and environmental concern resulting from the conventional handling and disposal of argon oxygen decarburisation (AOD) and ladle metallurgy …
DetailsIn this study, calcium sulfoaluminate belite (CSAB) cement clinkers were produced using generally unutilized metallurgical industry residues: AOD (Argon Oxygen …
DetailsAOD is a process for the refinement of iron, nickel, and cobalt based alloys. ... This introduction causes significant agitation and, therefore, intimate slag-metal contact. Through the management of an additional high oxygen partial pressure gas mix and argon, the metal is refined and can reduce carbon levels to 0.01% or lower. Silicon and ...
DetailsLaboratory treatment tests of AOD slag from stainless steelmaking have been carried out by MiMeR, Minerals and Metals Recycling Research Centre, at Luleå University of …
DetailsThe reduced slag was either water granulated or cooled in an Al2O3 crucible. Metal droplets, suitable for recycling as metallic materials in the steelmaking, were recovered after the slag granulation. Characterizations of slag samples from the tests show considerable influences of the treatments on physical and mineralogical properties of the slag.
DetailsEstimations of structures and compositions of main compounds in powders of fly ash and AOD-slag and in briquette pieces before and after heat treatments were done by using a S-3700N (Tokyo, Japan) SEM equipped with a Bruker AXS XFlash Detector 4010 (MA, USA) in combination with energy dispersive spectroscopy (EDS).
DetailsThe 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 …
DetailsThe evolution of non-metallic inclusions (> 10 µm) for the Al-killed steel in the stainless steelmaking is described.The effects of the slag basicity at the AOD/VOD process, Ca treatment, raw materials (dolomite and spent refractory), reoxidation and vacuum condition on the evolution of the non-metallic inclusion were investigated using …
DetailsThe in-situ treatment of slag and CO 2 in the "AOD slag + CH 3 COONH 4 ″ system is achieved through direct wet carbonation under environmental conditions. Its ultra-high …
DetailsBy integrating the treatments and steering of slags′ properties to the total process optimization system, the principles of circular economy could be achieved. ... 25% can be found in AOD slag ...
DetailsThe AOD slag was first ground and dried at 378K for 8 h, followed by sieving through a 200-mesh sieve. Then, using deionized water, solutions of NaCl, NaOH, NH 4 Cl, and CH 3 COONH 4 were prepared at 1000 mL each. Different solid-liquid ratio led to different amount of AOD slag in 200 mL additive solution, and the mixture was added to …
DetailsAOD 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 nd by the plant slag granulation.
DetailsThe AOD slag becomes highly viscous during the decarburisation stage. To promote efficient reduction of slag and desulphurisation, fluxes are added to reduce the viscosity of the top slag. The ...
DetailsMoon et al. [92] investigated the gas-solid carbonation behavior of AOD slag at room temperature for 3-14 days, the carbonation conversion rate is only 17 %, and the corresponding CO 2 capture ...
DetailsA number of carbon-rich (containing up to 47 wt% C) and lime-rich (containing up to 96 wt% of CaO-compounds) waste products from the pulp and paper industries can be used in iron and steel industry as fuels and slag formers for various metallurgical processes such as blast furnaces (BF), cupola furnaces (CF), argon oxygen decarburization (AOD) …
DetailsIn addition to the composition of AOD slag in Table 1, the slag after reduction can contain several percent fluorspar. ... By integrating the treatments of slags and steering of their properties to the total process optimization system, the targets of circular economy could be attained, and the portion of landfilling minimized and even …
DetailsTreatments of AOD slag to Produce Aggregates for Road Construction, Proceeding AISTech 2006, Vol. 1, p 573-583. V ABSTRACT The Swedish steelmaking industry produces large amounts of by-products.
Details2. EXPERIMENTAL 2.1. Reduction and melting of AOD slag for water granulation 1 2 7 6 2 4 7 5 a. Crucible system for slag reduction 3 b. Crucible system for slag melting
DetailsThe valorisation of AOD-slag to produce new construction materials is a promising route to lower the environmental impacts of cement and concrete industries. ... but further treatments are required in order to activate its binding properties. Recent research investigates the potential of AOD-slag and other crystalline SSS to be used as …
DetailsThe slag tapped from AOD (Argon Oxygen Decarburization) converter disintegrates, sometimes, during cooling. Slag fines from the disintegration are difficult to handle and to use as materials for co ...
DetailsThe characteristics of argon oxygen decarburization slag (AODS) for smelting stainless steel that has been aged for 10 years were analyzed. Three types of AODSs distributed …
DetailsYang 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. …
DetailsLaboratory 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. The slag was ...
DetailsPE series jaw crusher is usually used as primary crusher in quarry production lines, mineral ore crushing plants and powder making plants.
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