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· It was pointed out that ladle slag and electric arc furnace slag have a higher iron concentration and typically experience a magnetic separation process to separate the metallic portion (which is recycled in the steelmaking industry) from the non-metallic portion (which is usually allocated to other management routes).
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· Therefore, slow-cooling experiments were undertaken to improve the grain size distribution. The grain size distributions were determined using in-situ image analysis. The samples were ground to their apparent liberation size and high gradient magnetic separation was used to separate the magnetic oxides from the nonmagnetic silicates …
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· Mineralogical phases of steelmaking slags have significant influences on the carbonation of the slags. In this paper, the effects of temperature and reaction time on the conversion of calcium-related phases and the carbonation degree of a slag sample were studied. The experimental conditions were a liquid-to-solid ratio of 20 mL/g, a …
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· The slag produced in the highest volumes is blast furnace slag, which is generally fully utilised as both an aggregate for road construction and as an additive in Portland cement ( Hiltunen and Hiltunen, 2004 ). The second most produced slag is basic oxygen steelmaking (BOS) slag from the Linz-Donawitz process.
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· Superconducting magnetic separation has been applied on recovery of the valuable resources from the steel slag and this process also has intended to reduce the waste to be dumped.
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· Overall, the integration of carbon mineralization technology using iron and steel-making slag with resource recovery encourages not only the sequestration of CO 2 but also drives the utilization of slag, offering a plausible option for a circular economy.
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· The melting behavior of BOF slag (CaO-SiO2-FeOx) is one of the key factors for dephosphorization during the converter process. Laboratory experiments using mixed chemical reagents and pre-melted slags were carried out to study the effect of the slag compositions on its hemispheric melting point, and the phases in the slag system were …
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· Abstract Ever-increasing energy costs and environmental restrictions have compelled researchers to focus on the reutilization of vast amounts of industrial by-products such as blast furnace slag and steelmaking slag, in energy extensive and material extensive industries such as iron-steel production and construction.
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· Slag from the steelmaking sector contains a significant amount of metals; therefore, it must be considered to be an abundant secondary resource for several strategic materials, especially chromium.
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· Over the past few years, a variety of melting casting projects have been performed, in collaboration with industries and universities. Concentrated alloys and nonmetallic compounds were studied including high-Si cast iron, high-Mn steel, Al-added stainless steel, high-entropy alloy, Permalloy 80 Ni alloy, Stellite Co alloy, steelmaking …
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· In order to remove phosphorus element from steelmaking slag and decrease iron loss, malic acid was selected as the leaching agent to dissolve steelmaking slag. Firstly, the influences of different factors, such as malic acid concentration, slag particle size, temperature, liquid/solid ratio and stirring speed, on the leaching ratios of …
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· Industrial calcium-based by-products such as steelmaking slag and carbide slag are often used as inexpensive mineralizers for CO 2. In this investigation, the pH was tested on-line during the mineralization process of CO 2 and steelmaking slag, carbide slag and the compounded system of steelmaking slag and carbide slag.
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· The importance of understanding slags, their reusability, their specific roles and improvements in functions to lead a significant reduction in slag volumes in iron and steel industry is discussed ...
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· Along with iron and steel production, large amount of slag is generated. Proper management on the iron- and steelmaking slag is highly demanded due to the high cost of direct disposal of the slag to landfill, which is the most adopted management approach. In this article, the potential application of iron- and steelmaking slag has …
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