2 Steel Slag was found to be non plastic in nature and liquid limit 42% and Local Soil is plastic Limit 29% and Liquid Limit 53% and The plasticity index the soil is determined as PI 24% indicating medium plastic in nature ... steel slag and crushed limestone mixtures as subbase material, ISSN: 2277-3754 ISO 9001:2008 Certified
With the rapid development of China's steel industry, rising rates of steel production have led to the increase of steel slag emissions. Steel slag is a kind of industrial solid waste produced in the process of iron and steel smelting, and its emission is about 15 wt%–20 wt% of crude steel output [].According to the data released by the …
Steel slag has been involved for the first time in the photoreduction of CO 2, most probably by virtue of the iron(III) impurities, while Palladium account for the thermal …
Steel slag is a solid waste produced in crude steel smelting, and a typical management option is stockpiling in slag disposal yards. Over the years, the massive production of steel slags and the continuous use of residue yards have led to vast occupation of land resources and caused severe environmental concerns. Steel slag …
Slag from iron and steel plants (steel slags, blast furnace slag, etc.), storage of the ashes of burning coals (bottom ash, fly ash) at thermal power plants, and …
Utilization of steel slag in sustainable and eco-friendly rigid pavement with self-compacting concrete Aishwarya Bhatt; ... this may be due to the pozzolanic nature of steel slag. Overall, the utilization of steel slag aligns with the principle of sustainable development by promoting waste reduction, resource conservation, energy efficiency …
One of the major concerns faced by the iron and steel industry, other than the abundant emission of carbon dioxide into the atmosphere, is the huge quantity of slag that is generated during the manufacturing of iron and steel. A comprehensive understanding of the iron and steel slag properties has diverted them away from stockpiling or landfilling …
The leaching solution of steel slag was utilized to simulate the environment in steel slag bricks, which was obtained by mixing 2.4 g steel slag powders with 800 mL deionized water, then filtering with qualitative filter paper and sterilizing by using a high-pressure steam sterilization pot (DGS-280B +, Lichen, Shanghai, China) at 121 °C and ...
The previous chapter covered the formation of liquid slag as part of electric arc furnace (EAF) steelmaking and its complex and highly variable chemistry. This chapter discusses the chemical and physical properties of slag in its solidified state, trace elements in slag, changes in slag due to weathering and wear, and the potential release and …
The use of metallurgical solid wastes such as steel slag, in agricultural activity, has become very important to contribute to reducing the accumulation of such wastes in the environment and to increase crop production. So, this chapter aims to emphasize the main aspects of the application of slags to soil chemical attributes as elevation of pH and …
Industrial by-product utilization in concrete has been an important choice of researchers over the years (Khan et al., 2016; Qasrawi, 2014).Steel slag has been utilized as aggregate/cementing material in concrete by various researchers over the years (Faraone et al., 2009).Recycling of metallurgical by-products will ensure the sustainable industrial …
The interfacial contact area between molten steel and slag is one of the key factors influencing the efficiency of chemical reactions. This study reconstructs the phenomenon of gas bubbles traversing the slag-steel interface by constructing a physical model of the water–oil system and employing image processing techniques.
It has been postulated that rising gas bubbles through the slag drag steel droplets from the bulk steel into the slag 42. Fig. 4: Transmission electron microscopy characterization of Type I slags ...
To promote the resource utilization of steel slag and improve the production process of steel slag in steelmaking plants, this research studied the characteristics of three different processed steel slags from four steelmaking plants. The physical and mechanical characteristics and volume stability of steel slags were analyzed through …
Steel slag not only significantly contributes to carbon dioxide reduction through waste heat recovery and carbon sequestration but also plays a crucial role in resource utilization. Currently, steel slag is utilized as a raw material in construction, agriculture, and …
In China, BOF slag accounts for about 70% of the annual steel slag production (Cheng and Yang, 2010).In the BOF process (Fig. 1), minor steel scrap and a large amount of molten iron from ironmaking as well as fluxes (lime/dolomite) are added into the furnace, and a 99% pure oxygen flow is applied at supersonic speed through a lance …
Steel slag from a specific iron and steel industry contains toxic elements like alkalis, heavy metals, and metalloids. These toxic elements get released into the …
The CO 2 reduction potential contributed by carbon mineralization of steel slags, including blast furnace slag, basic oxygen furnace slag and electric arc furnace slag, was estimated by ...
Steel slag is a by-product of the steel industry. Understanding of the chemical, mineralogical, and morphological properties of steel slag are necessary for its use in sustainable practices. This paper provides an overview of the different types of steel slag that are generated from basic-oxygen-furnace (BOF) steelmaking, electric-arc …
Many restrictions exist, however, on the utilization of steel slag. When steel slag is used internally, in steel plants, the most obvious problem is that of the enrichment of P and S (Drissen et al., 2009).The Bhilai Steel Plant in India was shut down because of its high S and P content (Das et al., 2007).The amounts of free lime and free MgO are …
Looking at the merits and associated benefits, some of the top steel-producing countries have adopted or upgraded with a recycling technique of steel slags from time to time for various applications (as shown in Fig. 3), such as for road construction, soil enrichment, cement production, etc. Notably, recycling steel slag for a particular …
Indirect carbonation of steel slag is an effective method for CO2 storage, reducing emissions, and promoting cleaner production in the steel industry. However, challenges remain, such as low Ca2+ leaching rates and slag management complexities arising from variations in mineral compositions. To address this, a high-temperature …
Slag processing. George C. Wang, in The Utilization of Slag in Civil Infrastructure Construction, 2016 5.3 Blast furnace slag processing. Iron blast furnace slag results from the fusion of iron ore, fluxing materials, and coke; the reduction reactions; and the separation of iron from the ore. As indicated in Chapter 2, the term blast furnace slag is …
Steel slag is a solid byproduct of the steelmaking process, widely generated in the metallurgical industry. Due to its alkaline nature and excellent adhesive properties with asphalt, it represents a potential road construction material with outstanding road performance, making it well-suited for utilization in highway construction. This paper …
where D CO2 (m 2 /s) is the diffusivity of CO 2 species which is a function of temperature 17, δ is the film thickness (m), and k CO2 is the mass transfer coefficient (m/s). According to our ...
Steel slag is a sustainable, high-strength alternative to natural aggregates found in traditional cement. ... And as the world only gets warmer, innovative materials of this nature will always be ...
The growth of electric arc furnace (EAF) steelmaking in North America has occurred mainly in the past 40 years due to low electricity prices, an abundance of steel scrap (especially near large population centers), and the development of mini and macro steel mills based on metal recycling. Scrap availability and price has made steel …
This paper conducts a systematic analysis of the physical and chemical properties of steel slag, specifically South Steel Electric Furnace slag, and compares it …