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The survival of BM in the alkaline environment of steel slag solution is worthy of attention. Fig. 3 depicts the growth characteristics of BM in deionized water and steel slag solution. OD 600 is the optical density of the solution at a wavelength of 600 nm. The larger the OD 600 value, the greater the number of BM. The two curves' trends are similar, indicating …
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Steel Slag. Steel slag is a byproduct of the steelmaking process. It is generated during the melting and refining of steel in a steel mill. Steel slag is a highly versatile material that can be used in a variety of applications, including construction, cement production, and as a soil conditioner. Ferrous and Non-Ferrous Slag
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Steel slag powder (SSP), with similar minerals components to cement (Jiang et al., 2018), is potentially practicable as the activator, thus resulting in greener all-solid-waste EPSC.But steel slag is often named the "over-burnt Portland cement clinker" (> 1600 °C) (G et al., 2013), which means it owns coarse crystalline and consequent much lower activity than …
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Comparing with the untreated steel slag powder, the low-carbon clean cement-based materials prepared from the CO2-fixing steel slag powder have a higher degree of hydration reaction from the NG ...
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The steelmaking and cement industries are energy-intensive industries with large scale, leading to massive pollutant waste slag and CO 2 emission during production processes. The CO 2 emission in cement and steel production are 860 kg CO 2 /ton clinker and 2.4 tons CO 2 /ton steel [1], [2].The US Geological Survey published data of global cement production …
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Long-term and accelerated swelling of steel slag-glass powder and steel slag-fly ash mixtures as sustainable geo-materials ... the steel slag output typically ranges between 10 and 15% of the total steel production. Accordingly, steel slag continues to be one of the major industrial by-products in the world. ... Chen et al., 2022; Rui et al ...
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Sustainability 2022, 14, 14951 2 of 19 is only approximately 35% [10], resulting in large amounts of stockpiling and occupying a lot of land area. Using steel slag as a supplementary cementitious ...
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The improper treatment of steel slag (SS) will cause serious environmental problems. Therefore, appropriate management and disposal practices are essential to mitigate the potential environmental risks. This paper delineated the impact of steel slag on cement-based materials' working performances. The paper provides an exhaustive overview of the …
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AGICO is a leading cement industry equipment supplier based in China. It can not only supply all kinds of slag powder grinding equipment including ball mill, vertical roller mill, and roller press, but also provide you with a complete turnkey solution for ground granulated blast-furnace slag (GGBS) production.Through cooperation with Luoyang Design Institue, Tianjin Design …
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The dry-process steel slag production process does not need to consume precious water resources. After the steel slag is crushed, rod milled, and magnetically separated, the slag …
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First, the fine classification problem. Mining-waste stone. Beneficiation - tailing. Sintering-desulfurization ash (desulfurization gypsum) Blast furnace iron making - blast furnace slag (water slag, slag), full name: water quenched blast furnace slag or granulated blast furnace slag (Granulated blast furnace slag)
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Steel Slag — Its Production, Processing, Characteristics, and Cementitious Properties. Caijun Shi, Caijun Shi. ... If you do not receive an email within 10 minutes, your email address may not be registered, and you may need to create a new Wiley Online Library account. Request Username ...
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However, although AM has the potential to transform modern industrial production, it also raises new considerations for manufacturers and users that include potential safety issues. The introduction of Additive Manufacturing into mainstream manufacturing brings with it new safety issues concerning workplace safety, health and the environment.
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As a kind of industrial waste in steel manufacturing, steel slag accounts for about 12–15% of steel output [1], [2].China's crude steel output reached 1.03 billion tons in 2021, with steel slag produced exceeding 120 million tons [3].At present, the amount of steel slag stacked in China has reached 1 billion tons, which will cause serious waste of resources and pollution …
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The global steel slag market size is projected to grow from $26.83 billion in 2023 to $38.28 billion by 2030, at a CAGR of 5.2% during the forecast period. ... Steel slag is a byproduct of steel production, formed when impurities in the raw materials react with oxidants and fluxes in the steelmaking process. ... Industries and governments can ...
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used as a substitute for cement in concrete. Steel slag is a byproduct from steel making industry [1] characterized by variable chemical components and low cementitious properties. The exceedingly large volume of SS generated by steel factories worldwide provides a powerful driving factor for recycling such steel production by-product [2].
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It is estimated that the production of 1 ton of steel may generate about 0.2–0.4 tons of steel slag waste; in China, the cumulative storage of steel slag exceeds 1 billion tons, with an annual production of 160 million tons [2], [3]. With the rapid development of the steel industry, the storage and disposal of steel slag have become urgent ...
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In this study, we used microorganisms and steel slag to reduce CO 2 emissions. The main objective is to investigate the influence and mechanisms of CO 2 fixation rate based on the composition of steel slag. In the absence of microorganisms, steel slag powders with higher C 2 S content exhibit higher CO 2 fixation rate. The absolute content of C 2 S decreases by …
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Recycling steelmaking slags has become a key issue to close the sustainable production loop. Ladle furnace slag – also called 'white slag' due to its high content in calcium oxide – can be successfully recycled as a flux in secondary …
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The accumulation of steel slag and other industrial solid wastes has caused serious environmental pollution and resource waste, and the resource utilization of steel slag is imminent. In this paper, alkali-activated ultra-high-performance concrete (AAM-UHPC) was prepared by replacing ground granulated blast furnace slag (GGBFS) powder with different …
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Proper maintenance is essential for any firearm, including shotguns. Neglecting routine cleaning, lubrication, and inspection can increase the likelihood of failure and potential explosions.Over time, debris, corrosion, or …
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The moisture sensitivity of steel slag asphalt concrete has been receiving close attention from the road construction industry. Although researchers have conducted numerous studies on the water damage resistance of steel slag asphalt concrete, the evaluations are inconsistent, and it is difficult to distinguish the weighting ratios of the factors influencing the …
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According to the world steel association, global crude steel production in 2019 reached 1868.8 million tonnes (Mt), and gained a 55.2 Mt increase compared to 2018 (World …
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The main challenge of the steel industry for the next decade is the steel production transformation process, starting in Europe. The CO 2 intensive blast furnace/basic oxygen furnace (BOF) route will be substituted by a combination …
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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 …
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The steel slag powder used in this study was obtained from the steel slag produced during the converter steelmaking process, sourced from the Wuhan Iron and Steel Company Limited. The main chemical composition and particle size of the steel slag powder are shown in Table 1. The phase results of the steel slag are shown in Fig. 1.
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Steel slag could be valuable for promoting a sustainable relationship between the concrete and steel industries. C 2 S, C 3 S, C 4 AF, and C 3 A in steel slags are typical mineral phases of Portland cement, indicating the potential of steel slags to function as hydraulic materials. Therefore, one recycling option is to grind steel slags into a fine powder and use it …
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The improper treatment of steel slag (SS) will cause serious environmental problems. Therefore, appropriate management and disposal practices are essential to …
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The slump value decreased from 180 mm to 60 mm with steel slag usage and concrete density increased by 10.2%. With the increment in the applied load, the slags in the …
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