2017-10-18 10.2.2 Blast furnace slag. Blast furnace slag (BFS) is a by-product from iron production in blast furnaces, which are fed by a mixture of iron-ore, coke and limestone. In the process, the iron ore is reduced to iron while all remaining materials form the slag, which is tapped off as a molten liquid and cooled.
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2022 2 24 Blast Furnace Slag BFS cement is the combination of Ordinary Portland Cement OPC and fine Granulated Blast Furnace Slag GBFS gained as a byproduct in the steel making manufacturer with below 70 to that of cement. Ground Granulated Blast Furnace Slag GGBFS is a fine glassy granule which encompasses cementitious possessions. Get Price; PDF
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2017-4-15 There have been many attempts to recover the energy from slag for use as heat, electricity generation or fuel, but none of them has been commercialised yet (Baati et al., 2011).The reason for this is that the industry is more focused on quenching the slag and promoting the formation of glassy phases for use in cement rather than recovering the energy.
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2015-4-14 The blast furnace (BF) slag waste heat was recovered by an integrated system stage by stage, which combined a physical and chemical method. The water and coal gasification reactions were used to recover the heat in the system. Based on the first and second law of thermodynamics, the thermodynamic analysis of the system was carried out by the
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2020-1-21 Blast-furnace slags are usually processed by either the wet or dry method. The wet method is based on water quenching; however, this method wastes water resources, produces harmful gases, and cannot use sensible heat [1,2,3,4].The heat value of slag (1500 °C) is 1600 MJ/t: the annual production capacity of 210 million tons of slag in 2016 was therefore
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2012-7-31 Blast furnace (BF) slag, which is the main byproduct in the ironmaking process, contains large amounts of sensible heat. To recover the heat, a new waste heat-recovery system—granulating molten BF slag by rotary multinozzles cup atomizer and pyrolyzing printed circuited board with obtained hot BF slag particle—was proposed in this study. The feasibility
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2017-2-6 High Temperature Properties of BOF Slag and its Behaviour in the Blast Furnace Lena Sundqvist okvist SSAB Tunnplat AB, Luleii and Lulea University of Technology, Lulea / Sweden Slag formation in the bosh and raceway is an important issue in the blast furnace process. SSAB works in Lulea operate with 100 % olivine pellets.
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2016-4-5 The main objective of this research was to comprehensively investigate the role of the hot blast furnace slag (BFS) played in coal gasification reaction process so as to improve the utilization of BFS waste heat and enhance H 2 and CO content in the syngas. The BFS characterizations, such as the heat carrier, catalyst, reactant, and the sulfide ...
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2022-2-1 1. Introduction. The steel industry as one of the most energy and carbon intensive industries, has attracted much attention in achieving the goals of carbon peak and carbon neutrality [1,2].The treatment of liquid blast furnace (BF) slag, a by-product of the iron-making process, is one of the breakthrough points, since it contains a large amount of high-grade
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2019-1-1 BFSs are also used for acquisition of extra melting heat in blast furnaces, and the waste heat recovery of slag is highly dependent on the speed of the cooling process. In this regard, the speed of the cooling process can be either slow or fast depending on the intended use of the solidified slag (waste heat recovery or better recycling ...
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2022-5-4 Blast Furnace Slag (BFS) cement is the combination of Ordinary Portland Cement (OPC) and fine Granulated Blast Furnace Slag (GBFS) gained as a byproduct in the steel making manufacturer with below 70% to that of
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@article{osti_5610662, title = {Heat recovery in dry granulation of molten blast furnace slag}, author = {Tetsuro, N and Hiroshi, N and Koichi, F and Tsukio, I}, abstractNote = {In a research and development project undertaken jointly between Ishikawajima-Harima Heavy Industries Co. and Sumitomo Metal Industries, Ltd., a process has been developed for granulating molten
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Blast furnace water-cooled slag (BFWS) has been solidified using a hydrothermal processing method, in which the BFWS could be solidified in an
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2021-2-1 This paper reported the calculation of the reaction heat in titanium-bearing blast furnace slag (abbreviated as TBFS)-H 2 SO 4 system based on estimation of thermodynamic data of CaTiAl 2 O 6 by mechanical mixture model. The thermodynamic analysis indicated that CaTiAl 2 O 6 was more stable than the corresponding ternary oxides as CaOTiO 2, CaOAl 2 O 3,
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2018-1-8 Reducing expansion due to Delayed Ettringite Formation (DEF) is becoming an important issue that must be taken into account, when producing heat-cured concrete. Mineral additives used as partial cement replacement should help in achieving the desired aspect. Based on an ongoing experimental program, this research emphasizes on the effect of Blast Furnace
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In metal manufacturing industry, Bisio [9], Barati et al. [10], Duan et al. [11] and Zhang et al. [12] suggested that waste heat from the molten slag of blast furnaces could produce steam, heat ...
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2016-1-19 CN-105647556-B chemical patent summary.
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Blast furnace slag (BFS), an industrial by-product generated from the preparation of iron, ... The formation amount of the AFt and C-A-S-H and the F’s increase first and then decrease with the increment of the IG addition, that is, when the IG addition is 6 wt%, their formation amount reaches the maximum value with 11.78 wt% and 5.02 wt ...
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2021-3-25 Abstract Carbon nanotubes are a promising material to solve the low tensile strength and ductility of Portland cement-based materials. Carbon nanotubes (CNTs) synthesized directly on cement clinker particles can also reduce production costs and help dispersion. In this scenario, this paper analyzes the fresh state rheological behavior, as well as the initial hydration period
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The experiment primary characterized the structure and hydration process with different types of slag by using MAS NMR, XRD, compressive strength, ICP, SEM, and hydration heat, then obtained the influence of the composition of the network former S/A (the mass ratio of SiO 2 and Al 2 O 3 in chemical composition) and amorphous phase content on ...
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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.
Read More@article{osti_5610662, title = {Heat recovery in dry granulation of molten blast furnace slag}, author = {Tetsuro, N and Hiroshi, N and Koichi, F and Tsukio, I}, abstractNote = {In a research and development project undertaken jointly between Ishikawajima-Harima Heavy Industries Co. and Sumitomo Metal Industries, Ltd., a process has been developed for granulating molten
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2013-11-7 furnace slag is known as by-product from the production of hot metal at. integrated steel and iron mills. Approximately 300 kg of this liquid slag with. a temperature of about 1500 °C is tapped together with each ton hot metal. This. means a worldwide annual production of about 400 million tons of blast furnace. slag.
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economic and efficient development of the blast furnace in a long time.1–3) And the damage of the copper stave of a blast furnace body is one of the restrictive links of blast furnace longevity.4) In recent years, Chinese commercial blast furnaces have suffered a large amount of economic losses due to the damage of copper stave.5,6) The formation
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2013-6-12 The blast furnace slag should be a free-flowing one at the operating temperatures to ensure efficient slag–metal separation. It must have appreciable affinity for the gangue constituents to facilitate the production of metal of choice. Yet from the available heat (in the hearth) point of view,1 the blast furnace slag should be neither very ...
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The blast furnace uses three sections copper stave as cooling equipment in the bosh, the belly and the lower part of the blast furnace body. During 14 years and 9 months operation of the blast furnace, the copper stave has been operated well without damage, and the shape of the copper Table 1. Main Operating Data before the blast furnace over ...
Read More2016-1-19 CN-105647556-B chemical patent summary.
Read More2021-3-25 Abstract Carbon nanotubes are a promising material to solve the low tensile strength and ductility of Portland cement-based materials. Carbon nanotubes (CNTs) synthesized directly on cement clinker particles can also reduce production costs and help dispersion. In this scenario, this paper analyzes the fresh state rheological behavior, as well as the initial hydration period
Read MoreBlast furnace slag (BFS), an industrial by-product generated from the preparation of iron, ... The formation amount of the AFt and C-A-S-H and the F’s increase first and then decrease with the increment of the IG addition, that is, when the IG addition is 6 wt%, their formation amount reaches the maximum value with 11.78 wt% and 5.02 wt ...
Read MoreAn integrated waste heat recovery system using finned heat pipes is having a significant effect on overall efficiency. The efficiency is increased by 10.5%–18.8% for various load conditions.
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