Ground Granulated Blast Furnace Slag (GGBS) The importance of Ground Granulated Blast Furnace Slag (GGBS) lies in its greener way to become a substitute in concrete material. GGBS being a waste material, it needs proper method for disposal. So incorporating this waste material in concrete can reduce the depletion of …
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A large amount of solid waste slag is generated in the production process in iron and steel enterprises. As for enterprise which takes blast furnace as the process, blast furnace …
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Blast furnace slag is a nonmetallic coproduct produced in the process. It consists primarily of silicates, aluminosilicates, and calcium-alumina-silicates. The molten slag, which absorbs much of the sulfur from the …
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Ecocem granulates blast furnace slag to create a partial replacement for Portland cement. This directly avoids CO2 emissions of 766kg per tonne of slag and makes use of the sites' process waste off-gas instead of natural gas to dry …
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Carbon dioxide mineralization for the disposition of blast-furnace slag is an important method for reducing CO 2 emissions and simultaneously dealing with solid waste from the steel industry. However, due to the stable structures and properties of blast-furnace slag, low mineralization reaction efficiency is a key issue in this process and …
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With respect to the mechanical properties, durability and thermal behavior, ground-granulated blast-furnace slag (GGBS) delineates a rational way to develop sustainable cement and concrete. Apart from environmental benefits, the replacement of cement by GGBS illustrates an adequate way to mitigate the economic impact. Although …
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At present, although the comprehensive utilisation rate of domestic blast furnace slag is more than 80%. However, the blast furnace slag treatment is …
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Metal extraction, as a part of the industrialization and urbanization, impacts the environment through extraction and waste generation. Blast Furnace Slag (BFS) is the main by-product of the iron making industry produced in significant amounts worldwide every year. This by-product is typically reused as a part of cement and concrete …
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Herein, we review approaches to the re-use of steel making slag, with particular focus on those that lower the environmental impact of industry, in the hope to promote further research and application of a material with potential as a resource rather …
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In order to tackle the environmental problems induced by Portland cement production and industrial solid wastes landfilling, this study aims to develop novel ternary cementless fly ash-based geopolymer by recycling red mud and blast furnace slag industrial solid wastes.
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Utilization of high volume ground granulated blast furnace slag (GGBS) to produce cement-based materials (CBMs) meets the requirements of sustainable development.
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Blast Furnace Slag In the blast furnace, the slag floating over molten pig iron (hot metal) is flushed out in slag pot and then sent to slag granulating plant or to cooling pits. Depending upon the cooling process, three types of slags are generated, namely, air-cooled slag, granulated slag and expanded slag. Air-cooled slag is produced by ...
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The recycling–utilization rate of steel slag in China is less than 30%. Steel slag is rich in CaO and can produce the Ca(OH)2 after hydration, which are expected to activate the pozzolanic activity of blast furnace slag. This work recycled steel slag as an alkali activator for the activation of blast furnace slag and prepared a steel slag-blast …
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Abstract Carbon dioxide mineralization for the disposition of blast-furnace slag is an important method for reducing CO 2 emissions and simultaneously dealing …
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Ground granulated blast furnace slag (GGBFS) or slag cement is a granular by-product material produced from iron blast furnaces of the iron making industry. Blast furnace slag (BFS) is formed when a limestone or dolomite flux, iron ore or iron pallets, and coke are melted together.
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The present paper investigated the process of the slag wool fabrication using high temperature blast furnace (BF) slag modified by coal ash (CA). The liquidus temperature and viscosity of the slag system with different mass ratios of BF slag and CA were measured through an inner cylinder rotation method. The approximate mass ratio …
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Blast furnace ferronickel slag (BFFS) is generated in the production of ferronickel alloys and is used as cement replacement in concrete or mortar. The effectivity in reducing cement consumption and improving performance are limited. By referring to the paste replacement method, this work used BFFS to replace an equal volume of the …
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Blast furnace slag (BFS) is the main by-product of iron making and is produced in large amounts worldwide. To improve energy use, it is necessary to u…
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Slags formed in blast furnaces contaminate environment. However, granulation of the slags makes it possible to produce valuable building material.
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In the last decades, gypsum-bearing industrial wastes become one of the common globally produced industrial and domestic wastes that are currently recycled and further utilized. In this study, the gypsum-bearing waste citrogypsum was used as a Ca2+-containing component to modify the properties of alkali-activated cement (AAC) based on …
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The disposal of lead slag has attracted extensive attention, which may affect the surrounding environment due to possible leaching of toxic elements into the soil or groundwater. ... Use of Pb blast furnace slag as a partial substitute for fine aggregate in cement mortar. J. Mater. Cycles Waste Manage., 14 (2012), pp. 102-112. Crossref View …
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Granulated Blast Furnace Slag. Granulated blast furnace slag is a glassy granular material that varies, depending on the chemical composition and method of production, from a coarse, popcornlike friable structure greater than 4.75 mm (No. 4 sieve) in diameter to dense, sand-size grains passing a 4.75 mm (No. 4) sieve.
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Diopside-based glass-ceramics are successfully produced by recycling blast furnace slag and fluorite tailing with the addition of supplementary elements such as TiO2, Fe2O3 and Cr2O3 as nucleation ...
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In 2017, the metallurgical slag output of iron and steel enterprises in China reached more than 440 million tons, including 247 million tons of blast furnace slag and 101 million …
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Steel slag is rich in CaO and can produce the Ca(OH) 2 after hydration, which are expected to activate the pozzolanic activity of blast furnace slag. This work recycled steel slag as an alkali activator for the activation of blast furnace slag and prepared a steel slag-blast furnace slag-based (SS-BFS-based) geopolymer.
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Traditionally, iron ore has been reduced with coke in a blast furnace and the hot metal product of the blast furnace containing carbon, manganese, silicon, sulphur and phosphorous, was subsequently refined in a steelmaking furnace. During ironmaking as well as during steelmaking, significant amounts of slag are produced.
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A large amount of dust is formed as one of the primary by-products during the blast furnace ironmaking process. Besides iron and carbon, it contains a variety of valuable metals such as zinc, lead, and indium widely applied in many industry fields. However, it is difficult to recycle and reutilize blast furnace dust (BFD) due to complex composition, …
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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 …
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In tonnage terms, blast furnace slag is at present the main type followed by slags from the Basic Oxygen Steelmaking (BOS) and Electric Arc Furnace (EAF) processes. ... Disposal Disposing of this material by dumping would not only be expensive but would also represent a waste of valuable natural resources. Thus much of this slag …
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Blast furnace slag (BFS) is a major non-metallic industrial by-product from blast furnace during the melting of iron ore which is associated with an energy-intensive and waste-intensive industry. According to the cooling method, BFS can be classified as granulated blast furnace slag (GBFS) and air-cooled blast furnace slag (ACBF) [13].
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Slag was processed by 28 companies servicing active iron and steel facilities or reprocessing old slag piles at about 129 processing plants (including some iron and steel plants with more than one slag-processing facility) in 33 States, including facilities that import and grind unground slag to sell as ground granulated blast furnace slag (GGBFS).
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The results show that the chemical composition of magnesium slag mainly includes 54.71% CaO, 28.66% SiO2 and 11.82% MgO, and the content of Al2O3 is much lower than that of granulated blast furnace slag. Compared to granulated blast furnace slag, magnesium slag has a larger relative bridging oxygen number and higher [SiO4] …
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