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heat of formation of blast furnace slag

Blast Furnace Slag - an overview ScienceDirect Topics

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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heat of formation of blast furnace slag

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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Investigation of thermal properties of blast furnace slag to

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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Thermodynamic Analysis of Blast Furnace Slag Waste Heat

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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Crystallization behavior of blast-furnace slag by single hot ...

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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Waste Heat Recovery from Blast Furnace Slag by Chemical

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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2004 High Temperature Properties of BoF Slag in the

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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Characterizations of the hot blast furnace slag on coal

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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Cooling and phase evolution of a molten blast furnace

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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An Overview of Utilization of Blast Furnace and

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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Blast Furnace Slag Cement (Application, Pros

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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Heat recovery in dry granulation of molten blast furnace slag

@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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Hydrothermal solidification of blast furnace slag by

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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Estimation of Reaction Heat in Ti-Bearing Blast Furnace

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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Blast Furnace Slag Addition Effects on Delayed Ettringite

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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Cold experiments on ligament formation for blast furnace

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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It is a kind of using blast furnace slag waste heat recycling

2016-1-19  CN-105647556-B chemical patent summary.

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Preparation and characterization of an alkali-activated

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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Early-age behavior of blast-furnace slag cement pastes

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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Effect of the Formation of Amorphous Networks on the

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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Blast Furnace Slag - Material Description - User Guidelines

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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Heat recovery in dry granulation of molten blast furnace slag

@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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(642e) Dry Granulation of Blast Furnace Slag for Heat

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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Phase Composition and Formation Mechanism of Slag

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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Structural aspects of blast furnace slag - nitrkl.ac

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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Phase Composition and Formation Mechanism of Slag

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 ...

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It is a kind of using blast furnace slag waste heat recycling

2016-1-19  CN-105647556-B chemical patent summary.

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Early-age behavior of blast-furnace slag cement pastes

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

Read More
Preparation and characterization of an alkali-activated

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 ...

Read More
Waste Heat Recovery From The Hot Water Boiling Plant

An 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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