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 ...
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 …
In stainless steel production, slag from argon oxygen decarburization (AOD) converters is dumped on to the ground and then slowly cooled. The slag undergoes phase transformation from β-dicalcium silicate (β-C 2 S) to γ-dicalcium silicate (γ-C 2 S) at approximately 500 °C to 450 °C, resulting in slag volume expansion, disintegration, and …
TMS INTERNATIONAL STAINLESS STEEL SLAG IS A STABLE, SUSTAINABLE PRODUCT OF THE STEEL MAKING PROCESS, ENGINEERED FOR VARIOUS …
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.
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 …
Argon oxygen decarburization (AOD) slag results from the production of stainless steel and is commonly dumped on to the ground and then slowly cooled …
On exposure to carbon dioxide (CO 2) at a pressure of 3 bars, compacts formed from pressed ground slag, and 12.5 weight percent water, were found to react …
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 …
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 …
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 …
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 …
Stainless Steel Slag - Sand Steel slags are a by-product of stainless steel production that can be used to create a concrete like building material (carbinox carbstone). Two initiatives (VITO in cooperation with ORBIX) …
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 …
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 …
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 …
A large amount of chromium-containing slag is produced in the production process of stainless steel, which has caused serious pollution problems and attracted wide attention. Under the dual pressure of the "Paris Agreement" and the environment-friendly transformation of the steel industry, research and development of a low-cost, large …
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 …
Steel slag, the main solid waste in the steel-making process, is produced more than 120 million tons annually in China. Most of the steel slag was stored in the …
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 …
Stainless steel slag (SS slag) containing a high amount of chromium (2–8 wt%) is a significant by-product of stainless steel production process [1,2,3].Approximately one ton of SS slag forms when manufacturing three tons of stainless steel [4, 5].Plenty of SS slags are discharged to the environment every year, leading to a waste of chromium …
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 ...
Steel slag is an industrial byproduct obtained from the steel manufacturing industry. It is produced in large quantities during steel-making operations that use electric arc …
Mater Technol 47(5):543–550 4. Huang S, Guo M, Jones PT, and Blanpain B (2013) Fayalite slag modified stainless steel AOD slag. In: Proceedings of the Third International Slag Valorisation Symposium, pp. 107–110. 5. Pontikes Y, Geysen D (2010) Options to prevent dicalcium silicate-driven disintegration of stainless steel slags.
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 …
This work shows the feasibility of using stainless steel slag as a substitute for limestone filler in the manufacture of self-compacting concrete. The influence of …
As shown in Fig. 4, the stainless-steel production process includes ferroalloy production and stainless-steel smelting processes.In the chain of stainless-steel production, the ferrochromium and ferronickel alloys are the important intermediate products, which are produced by using a submerged arc furnace (SAF) process, so that …
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 use of a hydraulic binder. This …
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.
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 …
Steel slag's usage is related to its physico-chemical characteristics. The density of steel slag is 3.3–3.6 g/cm 3. Steel slag is hard because of its high Fe amount and is highly resistant to corrosion. The grindability index of steel slag is 0.7 [38]. Steel slag primarily consists of SiO 2, CaO, Fe 2 O 3, FeO, Al 2 O 3, MgO, MnO, and P 2 O 5 ...
Stainless steel slag (SSS), for instance, a residue produced during the stainless steel making process, has the potential to be used in alternative cement production. However, since chromium is an essential constituent of stainless steel, a fraction of it appears also in the SSS, together with other heavy metals, posing …
is the lack of slag chemistry and viscosity control. In many cases the slag tended to be too stiff to sustain an adequate . The following discussion will attempt to provide a better understanding on the key factors that control slag ing in stainless steel making. There are basically two requirements for slag ing (C-Steel and ...
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 …