stainless steel slag

Solidification of stainless steel slag by accelerated carbonation

As molten stainless steel slag containing dicalcium silicate (C 2 S) cools it can undergo several phase transitions. The final transformation from the p‐polymorph to γ‐C 2 S is accompanied by a volume change that causes the slag to self‐pulverise or 'dust'. As a consequence of this the fine grained portion of the slag contains more ...

Solidification of stainless steel slag by accelerated carbonation

As molten stainless steel slag containing dicalcium silicate (C2S) cools it can undergo several phase transitions. The final transformation from the beta-polymorph to gamma-C2S is accompanied by a volume change that causes the slag to self-pulverise or 'dust'. As a consequence of this the fine grained portion of the slag contains more of this ...

Stainless steel slag fundamentals: from furnace to tundish

Slag practices and conditions that are optimal for stainless steel quality and good refractory performance are defined. Phase equilibria and computer modelling are used to simulate and predict refractory–slag and slag–metal interactions. The slag principles and requirements for ing in the electric arc furnace are discussed.

Detoxification and comprehensive recovery of stainless steel …

The fitting spectra of Moss spectrum analysis of stainless steel dust and chromium containing slag are shown in Fig. 2 (a) and (b), respectively. The Moss spectra were fitted with appropriate combinations of lorentzian profiles representing singlet, doublet and sextet components, and spectral parameters of these components IS …

Fluidity, mechanical properties, shrinkage of alkali-activated slag …

The performance of alkali-activated slag–stainless steel slag mortar (ASM) prepared with a composite activator is investigated. • The compressive strength and elastic modulus of ASM decreased and then increased with the increase in WG content.

Ladle metallurgy stainless steel slag as a raw material in …

Ladle metallurgy (LM) slag is generated during the refining process step in stainless steel making. In view of its very fine particle size, due to the transformation of β- to γ-C 2 S, and the Cr content, the slag is challenging in terms of handling and disposal and is used in only few applications. The current work explores the utilisation of the LM's fine …

Effects of Carbonation–Hydration Curing on CO2 Uptake, …

AbstractThis study aimed to study the effects of different carbonation–hydration processes and carbonation degrees on the mechanical properties and leaching behavior of heavy metals in stainless steel (SS) slag paste. SS slag powders were carbonated at ...

Crystallization mechanism of glass-ceramics prepared from stainless

Glass-ceramics have been prepared by using stainless steel slag, fly ash and coal fly ash that were fig-obtained from industrial solid waste. The crystallization behavior and mechanical characterization of the glass-ceramics with different (CaO + MgO)/(SiO 2 + Al 2 O 3) content ratios were studied.While the basicity decreases from …

Comprehensive utilization of steel slag: A review

1. Introduction. Steel slag is the main solid waste generated in the steel-making process, accounting for 15 to 20% of crude steel output [1].China's crude steel output in 2021 was 1.035 billion tons [2], more than half of the global crude steel output (1.9505 billion tons) [3], and the steel slag output exceeded 120 million tons.In contrast, …

Physicochemical and mineralogical properties of stainless steel …

Stainless steel slag is classified as a hazardous waste owing to the presence of soluble poisonous Cr(VI), which is harmful to the surrounding environment and human health. In this study, an environmental-friendly process was proposed for efficient recovery of Cr resources and harmless utilization of stainless steel slag. Cr element …

Chemical, Mineralogical, and Morphological Properties of Steel Slag

Steel slag is a byproduct of the steelmaking and steel refining processes. This paper provides an overview of the different types of steel slag that are generated from basic-oxygen-furnace (BOF) steelmaking, electric-arc-furnace (EAF) steelmaking, and ladle-furnace steel refining processes.

A clean approach for detoxification of industrial chromium …

1. Introduction. Stainless steel slag is a by-product of the stainless steel production process [8], its output is about one-third of the stainless steel production [10], [21].With the increasing demand for stainless steel products in many fields, the annual production of stainless steel slag in China has exceeded 10 million tons [26].Since 70 …

Monitoring of stainless-steel slag carbonation using X-ray …

Steel production is one of the largest contributors to industrial CO2 emissions. This industry also generates large amounts of solid byproducts, such as slag and sludge. In this study, fine grained stainless-steel slag (SSS) is valorized to produce compacts with high compressive strength without the …

Stabilization of Stainless Steel Slag via Air Granulation

Argon oxygen decarburization (AOD) slag results from the production of stainless steel and is commonly dumped on to the ground and then slowly cooled …

Effect of accelerated carbonation on AOD stainless steel slag …

Argon Oxygen Decarburization (AOD) stainless steel slag in its powdered form (without boron addition), has limited valorisation potential and is a burden in terms of disposal costs. Its high surface area and alkaline properties, on the other hand, give it high potential to act as a carbon sink via mineral carbonation, and if used in the ...

Characterisation of alkali-activated stainless steel slag and …

In the current study, electric arc furnace stainless steel slag (EAFSS) as a potential precursor in the production of alkali activated materials (AAMs) is investigated, …

Remediation of stainless steel slag with MnO for CO2 …

Mineralization of CO 2 using a Ca–rich metallurgical slag is known to be a promising approach to controlling CO 2 emissions while converting slag by-products into valuable materials. However, untreated stainless steel slag (SSS) cannot straightforwardly be used for carbon capture and storage (CCS) or rather carbon capture and utilization …

Air-cooled stainless steel slag

An EAF produces steel by the melting of recycled steel scrap, using heat generated by an arc, created by a large electric current. Lime added (as flux) combine with silicates and …

Effects of iron oxide on crystallization behavior and spatial

Chromium plays a vital role in stainless steel due to its ability to improve the corrosion resistance of the latter. However, the release of chromium from stainless steel slag (SSS) during SSS stockpiling causes detrimental environmental issues. To prevent chromium pollution, the effects of iron oxide on crystallization behavior and …

Chemical, Mineralogical, and Morphological Properties of …

Steel slag is a byproduct of the steelmaking and steel refining processes. This paper provides an overview of the different types of steel slag that are generated …

Everything You Should Know About Weld Slag (And Why

Some of the most common flux-cored wires with rutile slag systems include those classified under AWS A5.20: Specification for Carbon Steel Electrodes for Flux-Cored Arc Welding and feature designators of T-1, T-9 and T-12. T-1 flux-cored wires provide good wetting action and are generally reserved for less critical applications since they don't offer the …

Carbon steel slag and stainless steel slag for removal of …

The maximum adsorption of arsenic on carbon steel slag, stainless steel slag and Fe-modified stainless steel slag was 12.20, 3.17 and 12.82 mg g−1 at 25 °C, respectively. The modification of stainless steel slag by FeC13 can generate more pore structures and larger surface areas, and 300°C treatment produces the best …

Preparation of Glass-ceramics Using Chromium-containing Stainless Steel

Per ton of stainless steel slag, as a kind of solid waste produced during the production of stainless steel, were produced by three tons of stainless steel approximately 10 to which the human body ...

Carbonation of EAF Stainless Steel Slag and Its Effect on …

EAF stainless steel slag (EAF slag) is one kind of chromium-bearing metallurgical solid waste, which belongs to alkaline steel slag, and contains a large number of alkaline mineral phases. The carbonation activity of these minerals gives EAF slag the capability to effectively capture CO2. In this paper, EAF slag samples with different …

Microstructural transformation of stainless steel slag-based …

The crushed raw material, which was cooled in water was prepared for SPS. Raw stainless steel slag (obtained from a steel plant in China, the composition shows in Table 1) was crushed into powder with a particle size <0.18 mm.To obtain a uniform powder of composites, the screened stainless steel slag and chemical reagents (99.9% of …

Efficient Utilization of Stainless Steel Dust and Chromium …

The compound formed by Fe element is the highest content in stainless steel dust and chromium-containing slag. X-ray fluorescence quantitative analysis (XRF) shows that the metal Fe in stainless steel dust and chromium-containing slag mainly exists in the form of Fe 2 O 3 and FeO. The main chemical components in stainless steel dust …

A Review of Circular Economy Prospects for Stainless …

In general, several steel slags have beneficial properties such as good strength, durability, and latent pozzolanic (cementitious) properties that make them attractive and potentially suitable for engineering applications, such as infrastructure construction, soil stabilization, neutralizer, as …

23.3: Metallurgy of Iron and Steel

The presence of the carbon makes the steel stronger and harder than pure iron. The higher the percentage of carbon, the harder the steel becomes. Mild steel is used for lots of things - nails, wire, car bodies, ship building, girders and bridges amongst others. High carbon steel: High carbon steel contains up to about 1.5% of carbon. The ...

Carbonation of Stainless Steel Slag as a Process for CO

Stainless Steel Slag Characterization. The elemental composition of each type of analyzed slag is reported in Table 1.Results proved to be in good agreement with data reported for these specific types of residues in prior studies [6, 9, 41, 42].The elemental content of the EAF slag was overall similar to the average composition of the …