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Slags are by- or co-products of the iron and steel making process. BF (blast furnace) slag is generated in iron production and EAF (Electric Arc Furnace) slag is generated by steel production. The same is with Basic Oxygen Furnace (BOF) slag. Processing of EAF using traditional methods involves crushing and grinding. However, …
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One of the most common ways of recycling BFS in the liquid state is granulation (rapid cooling of hot BFS in a liquid state in a jet of water). As a result of this …
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significant impact on the degree of crushing of the slag after leaving the rotor and the size of the solid particles formed. Therefore, this paper uses ... problem of blast furnace slag granulation by centrifugal dry granulation of blast furnace slag by rotary cup or turntable. In 1985, Pickering et al. [1]in the United Kingdom first
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Blast furnace slag (BFS) is a by-product of iron manufacturing in blast furnaces fed by a mixture of iron ore, limestone, and coke [70,71]. In the manufacturing of iron, iron scrap, …
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Blast Furnace Slag is produced to meet state specifications for gradation and other key requirements. The American Society of Testing and Materials (ASTM C-125, Definition of Terms Relating to concrete and concrete Materials) defines Blast Furnace Slag as "the non-metallic product consisting essentially of silicates and aluminosilicates of calcium …
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The present study evaluates the effect of utilising granulated blast furnace slag as a partial substitution of the fine fraction of natural aggregates on various …
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The present study evaluates the effect of utilising granulated blast furnace slag as a partial substitution of the fine fraction of natural aggregates on various concrete parameters using the general factorial approach. Two levels of the water/cement ratio (0.45 and 0.5) and four different percentages of granulated blast furnace slag (0, 20%, 40% …
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Abstract. Shell has used BFS cements on over 160 oil well cementing operations as part of an effort to develop and expand the understanding of blast furnace …
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and application of air-cooled blast furnace slag (BFS) or more commonly known as BFS aggregates. Molten blast furnace slag is tapped from the furnace into ground bays …
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Ferrochrome slag (FCS) is a by-product of ferrochrome industries and is produced during the extraction of ferrochrome from chromite ore. The chemical composition of FCS comprises of 27–33% SiO 2, 15–25% Al 2 O 3, 20–35% MgO, and 10–15% iron-chromium compounds.The high chromium content of FCS and the possibility of its …
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A synthetic aggregate may also be the byproduct of manufacturing and a final burning process—blast furnace slag is an example of a synthetic aggregate. Briefly, blast furnace slag is formed when iron ore or iron pellets, coke, and a flux (such as limestone, CaCO 3, or dolomite, CaCO 3 ·MgCO 3) are melted together in a blast furnace. When the ...
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The use of granulated blast furnace slag (GBFS) aggregates in concrete by replacement of natural aggregates is very promising concept because its impact strength is quite more than natural aggregate. Steel slag aggregates are already being used as aggregates in asphalt paving road m due to their mechanical strength, stiffness, …
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pipe to recover the heat from blast furnace slag in the fluidized bed. The system was equipped with a slag-crushing device which could crush the slag formed by …
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The performance of blast furnace slag treated by wind quenching is significantly better than that of water quenching slag, and the heat recovery rate is high, …
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vi-ronmentally friendly concrete block substitute that use no natural aggregate (sand and gravel). Instead, this product utilizes a fine powder of granulated blast furnace slag, as …
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In this article, a geotechnical assessment of blast furnace slag (BFS) properties is presented. We conducted a series of CBR, and oedometric tests to evaluate the feasibility of BFS application in earth construction. ... To check if the GGBFS was susceptible to crushing, we checked the fraction share change after compaction in the …
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Blast furnace slag cement is the mixture of ordinary Portland cement and fine granulated blast furnace slag obtained as a by product in the manufacture of steel with percent under 70% to that of cement. Ground granulated blast furnace slag cement (GGBFS) is a fine glassy granules which contain cementatious properties.
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With the aim of utilizing blast furnace slag in the iron and steel industry at low cost, pollution free, refinement, and high value added, an entirely subversive technical route was presented, which was a novel synergistic utilization of slag to produce zeolite and hydrotalcite-like compounds. The object of this study is to obtain the optimal operating …
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Investigations were carried out on the suitability of granulated blast furnace slag as a mold material for either full or partial replacement of existing silica sand in the foundry industry. The sodium silicate-CO2 process was adopted for evaluating the same. A series of sand tests were performed on silica sand and slag individually and in …
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Molten blast furnace slag is tapped from the furnace into ground bays where it air-cools to form a crystalline rock-like material. When cooled, the BFS is crushed and screened to ... Due to the vesicular*. physical structure of air-cooled slag, crushing produces a cubic shape with fewer misshapen particles than found in some natural aggregates ...
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DOI: 10.1061/(ASCE)MT.1943-5533.0002907 Corpus ID: 202217476; Laboratory Tests on Compaction and Crushing Behaviors of Construction Waste Slag–Clay Mixtures @article{Gu2019LaboratoryTO, title={Laboratory Tests on Compaction and Crushing Behaviors of Construction Waste Slag–Clay Mixtures}, author={Xiaoqiang Gu and Chao …
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When a jaw crusher is equipped with the ASC system, the crushing forces are carried by massive hydraulic cylinders mounted into the rear header casting. If an uncrushable object enters the crusher cavity and …
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According to ASTM C989-18 [59], granulated blast furnace slag (GBFS) is defined as a glassy granular material formed when molten blast furnace slag is rapidly chilled by immersion in water with or without compositional adjustments made while the blast furnace slag is molten. ... (200°F) or lower, the slag is transported to a plant for crushing ...
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Blast furnace slag (BFS) is the main by-product in ironmaking process. As its discharge temperature is between 1450 and 1550 °C, each ton of slag contains a large amount of high-quality thermal energy which is equivalent to 60 kg standard coal [1,2,3]. Thus, there is a great potential for waste heat recovery from high-temperature molten slag.
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High-temperature waste heat from the iron and steel industry, as shown in Fig. 1, are mainly stored in products, molten slag and waste gas [2].Molten slag, as a kind of by-product during the steelmaking process, is exhausted in extremely high temperature and thus, it carries a great deal of high-grade heat accounting for 10% of waste energy …
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Blast furnace slag is a major by-product of the iron-making process, discharged from a blast furnace. The temperature of the molten slag reaches as high as 1500 °C. Molten slag has a large yield and a high value of waste heat resources (Du et al. 2019) as well as great potential, economy and feasibility in waste heat recovery. Most of …
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Steel slag has higher basicity, so its utilization is also very different from blast furnace slag. In particular, rapid crystallization leads to a rapid increase in the viscosity of steel slag, so its crushing and granulation are more difficult. Therefore, the utilization rate of steel slag is much lower than that of blast furnace slag.
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3. Experimental work3.1. Bond grindability tests. The ball mill grindability tests were conducted in a standard Bond mill for 90-μm test sieve. As received, the slag was finer and hence the clinker was also reduced down to similar fineness by crushing in a roll crusher and −3.36 mm samples were used as feed materials for the tests.
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In blast furnaces (BF) ore gangue and non-metallic impurities are removed from the metal ore, thereby producing pig iron and slag as the final products. Pig iron …
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It is converted to granulated blast furnace slag (GBFS) or ground granulated blast furnace slag (GGBFS) by quickly cooling molten slag with industrial water or air. Headquarters. Florida | USA. 54 SE 5 th Avenue, Suite 300 Delray Beach, FL 33483 ... Mexico City | Mexico. International Materials Mexico S. de R.L. de C.V. Avenida …
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