ABSTRACT. Recycling ladle furnace (LF) slag helps in sustainable steel making and reduces steel production costs. This paper focuses on recycling Si/Mn/Al-killed LF slag as a replacement for CaO–Al 2 O 3-based synthetic slag for treating high carbon Si/Mn-killed steels.Characterization of different types of LF slag was carried out to identify chemical …

The steel making slag. Leachate analysis of steel making slag. The KSLT was conducted to examine the leachability of the toxic elements from the steel making slag. The concentrations of the selected toxic elements and their regulation levels in South Korea were summarized in Table 4. Most of the toxic elements were scarcely leached …

Slag, which consists of calcium oxide, aluminium oxide, and other metal oxides, is an abundant by-product in steel-making process. It has been used as adsorbents to remove various heavy metals and ...

Blast furnace slag is a by-product of the iron-making process while producing pig iron. The present research provides an understanding of the two different types of slags of water quenched granulated slag and air-cooled slag that are generated from iron making process through the blast furnace route. The chemical, mineralogical, …

Meanwhile, the merits of two slag capacity concepts as measures for describing slag basicity like optical basicity have also been reviewed to be disruptive because the ratios of activity of free oxygen ion $$ a_{{{text{O}}^{2 - } }} $$ in slags to activity coefficients $$ f_{{{text{H}},i}} $$ of sulfide and monomer phosphate $$ …

Ferrous metal production and ferrous slags. George C. Wang, in The Utilization of Slag in Civil Infrastructure Construction, 2016 2.4 Steelmaking processes and steel slag formation. As seen in Fig. 2.1, crude iron is refined in a BOF or an EAF to become crude steel.It may also undergo a second refining in a ladle furnace. The BOF steelmaking process is …

The results show that the steel slag has good adsorption effect on many heavy metals in sewage, such as CrO 4 [31], Cu 2+ [32], Pb 2+ [33], As 5+ [34] and Cd 2 + [35] (3) Hazardous gas removal ...

Purple Slag Glass. Imperial, the manufacturer, was one of the most prolific makers of Slag Glass in various hues. They made glass in green, brown, red, and purple colors but Sowerby is most well known for producing the Purple Malachite you see above. There is one other company based out of Pittsburg named Mosaic Glass that …

High-temperature molten steel slag is a large amount of industrial solid waste containing available heat energy and resources. This paper introduces an efficient and comprehensive utilization process of high-temperature molten steel slag. The waste heat energy in the high-temperature molten steel slag can be fully recovered through …

Steel slag is a by-product obtained through the separation of molten steel from impurities in steel-making furnaces. It can be produced by different types of furnaces (blast, basic oxygen, electric arc, ladle furnaces). The reuse of metallurgical slags in road pavements can pursue aims of recycling and environmental sustainability. Based on the …

The steel-making slag (SMS), a by-product of steel manufacturing process with an alkaline pH (11–12) and high amount of iron (Fe) and calcium (Ca) oxides, was used to reduce arsenic (As ...

The process of making slag wool involves melting the slag and drawing it through a tap hole. The slag then passes through a jet of air, which disperses the slag into a cone of liquid droplets, which then develop into long fibers. ... (XANES) analysis showed that the mechanism of H 2 S removal involved the formation of iron and manganese ...

Oxide inclusions also are modified. Top slag usually belongs to CaO–CaF 2 or CaO–Al 2 O 3 –CaF 2. Basicity is maintained high value. Aluminium content in steel is decreased primarily by the reaction of Al with unstable oxides in the top slag. Carry-over slag from furnace to the ladle must be minimized to avoid phosphorus reversion.

slag and free magnesium oxide in steel making slag. 1.Introduction Blast furnace slag and steel making slag are by-products pro-duced massively in the iron and steel making process. To control the iron making process and the steel making process correctly, and to promote the reuse of slag, it is very important to analyze the chemi-

This extensive report, authored by Praneel Bhattacharya and Madhurima Datta, provides an in-depth exploration of the iron and steel industry, with a specific focus on the processes involved in an integrated steel plant. This was the culmination of their final year B.Tech training (affiliated with the Chemical Engineering Department of …

Electric arc furnace slag Steel slag is obtained from steel-making process within an EAF where an electric arc is used for charging the steel scrap, molten iron and fluxing agent rather than the gaseous fuel (Yildirim and Prezzi 2011). Also, the amount of steel scrap could be more than that of pig iron, essentially making the EAF process a ...

Moreover, the blue line confirms two stages involved in the detachment process: (1) for t < 20 s, the particle moves quickly through the slag-argon interface and reaches an initial settling position at the interface (as indicated by the short plateau), and (2) over a longer period of time thereafter, particle further gradually goes down until ...

DOI: 10.1016/j.jece.2024.112448 Corpus ID: 268393647; Carbon Mineralization of Steel and Iron-Making Slag: Paving the Way for a Sustainable and Carbon-Neutral Future @article{Moon2024CarbonMO, title={Carbon Mineralization of Steel and Iron-Making Slag: Paving the Way for a Sustainable and Carbon-Neutral Future}, author={Seokyoon Moon …

Blast furnace slag is a by-product of the iron-making process while producing pig iron. The present research provides an understanding of the two different types of slags of water quenched ...

Many of the industries involved in metal finishing, mining and mineral processing, coal mining and oil refining, have problems associated with heavy metal contamination of process and runoff waters. ... The uptake of Ni 2+ and the simultaneous NH 4 + and PO 4 3− by steel-making slag samples thermally activated at various …

At the end of the investigated period (December), the height (H) of trees (Fig. 2 a) grown in urban soils treated with composted sewage sludge + slag (3.1 ± 0.2 m) was significantly greater (p < 0.05) than that of those treated with composted sewage sludge + limestone (2.7 ± 0.1 m) and cattle manure + slag (2.8 ± 0.1 m).The combined use of …

The slag droplet entrainment is a common phenomenon in steel refining processes, which may lead to inclusions and defects. In the multiphase flow system, the distinct interface and tiny blobs possess a wide range of spatial and temporal scales and make it hard to be simulated. In numerical methods, the volume of fluid (VOF) approach …

Steel slag is a solid waste product generated during the carbonation stage of steelmaking. It has high levels of heavy metals and substantial amounts of free calcium and magnesium oxide, making it ...

While making C steel heats a minimum of slag carry over is aimed. A new slag cover is built during tapping. For ladle furnace operations, a calcium aluminate slag is a good choice for the control of S. Slag forming compounds are added in the ladle at tapping so that a slag cover is formed prior to transfer to the ladle furnace. Furnace …

Basic oxygen furnace (BOF) slag was kindly provided by M/s JSW Ltd., India from their steel-making plant. The as-obtained slag (3–10 mm in size) was washed in acetone to remove surface impurities, and crushed to a fine powder in Herzog pulverizing mill (HSM 100). The ground sample was sieved into various particle size fractions using standard ...

Slag carry over is an unwanted practice which cannot be completely prevented during tapping of liquid steel from primary steel making furnace. Steel making slag produced in the primary section and ...

It is a process in which solid fuels such as coal, coke, or semi-coke react with gasifying agents under high temperature and pressure to produce gaseous products and a certain amount of slag ( Aprianti et al., 2023; Xue et al., 2023; Yuan et al., 2022a ). The gasification slag is a by-product of the gasification process, including fine slag (FS ...

The iron and calcium elements involved in . ... Mg-Fe-Cr containing spinels crystallised in a stainless steel-making-slag[153], f) typical cubic spinel morphologies described byGoldschmidt (1922 ...

The utilization of steel slag for CO2 sequestration is an effective way to reduce carbon emissions. The reactivity of steel slag in CO2 sequestration depends mainly on material and process parameters.

The PSD curves (Figure 3) shows that 80% (by weight) of the GBF slag-A and slag-B are less than 3 mm and 0.9 mm, respectively. The ACBF slag collected from the blast furnace slag yard have coarser particle size with 16% of +65 mm, 18% of -65+40 mm, 40% of -40+20 mm, 12% of -20+10 mm and 13% of below 10 mm.