plc, Oxon, U.K). 3. Results and Discussion It is already known that manganese minerals are separated in commercial magnetic separators.3,4) The magnetic separa-tion technology was thus chosen to separate and concentrate manganese from waste silicomanganese slag in this study. In order to feed the silicomanganese slag into the dry
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Characterization and application of municipal solid waste incineration (MSWI) bottom ash and waste granite powder in alkali activated slag X. Gao a, b,1, B. Yuan a, b,1, Q.L. Yu a, *, H.J.H. Brouwers a, b a Department of the Built Environment, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands b State Key Laboratory of Silicate Materials for Architectures
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uniformity coefficient U is 6.58, thus fulfilling the requirement of at least 4 for the construction of dams of stone materials. Re-crushing of slag can result in coefficient 15, because the grain size would decrease and such material could be integrated in the bearing layer.
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more than 5% by weight. The grain composition of crushed slag, like other aggregates, is selected according to the principle of ensuring minimum voidness. Screenings of crushing slag with a grain size of 0-10 mm can be used as a fine-grained aggregate. A sand fraction (0-5 mm) can be separated from the crushing screenings. From the crushing
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Eloneva (5) performed calcium extraction experiments with blast furnace slag, desulfurization slag, ladle slag, and steel converter slag, as mentioned earlier.From blast furnace slag and ladle slag at maximum, 20% of the calcium was extracted with various solvents, while from desulfurization and steel converter slags over 50% extraction was obtained.
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Electric arc furnace steel slag is obtained by cooling the electric arc furnace steel liquid slag in air at production site. The composition of slag varies upon the type of furnace and charge, the desire grade of steel purity and the furnace operation conditions. In production of steel process about 15% of slag/ton of steel gets produced.
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plc, Oxon, U.K). 3. Results and Discussion It is already known that manganese minerals are separated in commercial magnetic separators.3,4) The magnetic separa-tion technology was thus chosen to separate and concentrate manganese from waste silicomanganese slag in this study. In order to feed the silicomanganese slag into the dry
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Metallurgical domain slag is obtained when smelting cast iron. Depending on the fraction and from bulk density, such a product is considered a porous or dense product. The porrows recognize the crushed stone of the specific bulk density below 1000 kg per 1 m3 and sand of the specific bulk density below 1200 kg per 1 m2.
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Slag silicon calcium magnesium fertilizer is made of blast furnace slag, vertical kiln ash, waste residue, and silicon residue. The above materials are melted at high temperatures in a blast furnace or electric furnace. The finished product is cheap in price and rich in composition. The production process of slag fertilizer
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However, the slag pumice is an artificial porous material obtained by paritala molten blast furnace slag steel production, followed by crushing and sorting /2/ requiring dried before applying it to songs that combined limits the possibility of using slag pumice in the specified composition.
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Additional information on steel slag aggregate use in the United States can be obtained from: National Slag Association 808 North Fairfax Street Arlington, ia 22314 CURRENT MANAGEMENT OPTIONS Recycling It is estimated that between 7.0 and 7.5 million metric tons (7.7 to 8.3 million tons) of steel slag is used each year in the United States.
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Ladle slag is commonly considered as a dust fraction and is not suitable for recycling processes. Hence, the researchers initially attempted to stabilize the ladle slag in a solid-state. To achieve this, an affordable waste material known as borate glass, which also required processing, was added.
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Copper slag is a by-product formed during the copper smelting process. The molten copper forms at the bottom of the furnace while molten slag is formed on top. The molten copper slag is then drained off and quenched with water or left in the air to cool. In Singapore, treated and processed copper slag (Mohs Hardness ≥6) is imported from various
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The article presents the results of assessing the element mobility (chemical elements and compounds) from the copper smelting slag recycling waste into brown forest soils (Haplic Cambisols) of the southern taiga district in Middle Urals, Russia. The copper smelting slag recycling waste was obtained by crushing the cast slag of the Sredneuralskiy Smelter (“technical sand”) followed by
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Piles of steel slag, a solid waste generated from the iron and steel industry, could be seen due to no utility found for the past century. Steel slag has now gained much attention because of its new applications. The properties of slag greatly influence its use and thus had got varied applications.
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Piles of steel slag, a solid waste generated from the iron and steel industry, could be seen due to no utility found for the past century. Steel slag has now gained much attention because of its new applications. The properties of slag greatly influence its use and thus had got varied applications.
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U.S Environmental Protection Agency, 109 T.W Alexander Drive, RTP, NC 27711 [email protected] ABSTRACT Abrasive blasting materials, such as coal slag garnet and copper slag, are often used for cleaning metal surfaces to remove rust and to prepare a surface before the application of a coating. The pre-blast
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The physical structure and gradation of granulated slag depend on the chemical composition of the slag, its temperature at the time of water quenching, and the method of production. When crushed or milled to very fine cement-sized particles, ground granulated blast furnace slag (GGBFS) has cementitious properties, which make a suitable partial
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The heavy metal composition of the steel slag samples is given in Table 2. Results of the analysis of samples confirm a high content of chromium and zinc. The analysis of the chemical composition of steel slag shows the content of Cr at the level of 2 915 mg·kg −1.
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Download Table | Chemical Composition and Major Phases of Typical LD Slag Generated at Integrated Steel Plants in India from publication: Sustainable Approaches for LD Slag Waste Management in
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more than 5% by weight. The grain composition of crushed slag, like other aggregates, is selected according to the principle of ensuring minimum voidness. Screenings of crushing slag with a grain size of 0-10 mm can be used as a fine-grained aggregate. A sand fraction (0-5 mm) can be separated from the crushing screenings. From the crushing
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The third texture diversity in the composition of slag is represented by nodular and kidney-shaped particles. The diversity and size of the ore minerals is directly connected with the distribution of pores in slag. The major ways for utilization of nickel industrial waste are pyro-metallurgical and hydrometallurgical methods.
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Subsequently, the chemical composition of the steel slag presented in figure 2, was obtained using standard X-ray fluorescence spectroscopy. The obtained compositions were compared to the findings of [15]. Free CaO and MNO had their concentration falling below the concentration obtained by [15], most likely due to the leaching
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The heavy metal composition of the steel slag samples is given in Table 2. Results of the analysis of samples confirm a high content of chromium and zinc. The analysis of the chemical composition of steel slag shows the content of Cr at the level of 2 915 mg·kg −1.
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Piles of steel slag, a solid waste generated from the iron and steel industry, could be seen due to no utility found for the past century. Steel slag has now gained much attention because of its new applications. The properties of slag greatly influence its use and thus had got varied applications. The chemical composition of steel slag varies as the mineral composition of raw material such as
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The article presents the results of assessing the element mobility (chemical elements and compounds) from the copper smelting slag recycling waste into brown forest soils (Haplic Cambisols) of the southern taiga district in Middle Urals, Russia. The copper smelting slag recycling waste was obtained by crushing the cast slag of the Sredneuralskiy Smelter (“technical sand”) followed by
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However, the slag pumice is an artificial porous material obtained by paritala molten blast furnace slag steel production, followed by crushing and sorting /2/ requiring dried before applying it to songs that combined limits the possibility of using slag pumice in the specified composition.
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The volume of slags generated from the steel industry is a source of possible resources which is constantly increasing. Specifically, in the production of stainless steel, specific and singular slags with unique characteristics are obtained, which allows considering an approach aimed at their use in new recycling ways. This work shows the feasibility of using stainless steel slag as a
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A promising type of steel slag for applications is the ladle furnace (LF) slag, which is also known as the basic slag, the reducing slag, the white slag, and the secondary refining slag. The LF slag is a byproduct from further refining molten steel after coming out of a basic oxygen furnace (BOF) or an electric arc furnace (EAF). The use of the LF slag in further applications requires
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The waste cement used in this study was fine residue recovered from aggregates obtained through crushing demolition concrete waste and size separation. Sieve size analysis indicated particles’ median diameter of 33.4 μm. The specific sur-face area was 13 m2/g determined by BET gas adsorption method (GEMINI V, Micromeritics).
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