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Summary This chapter contains sections titled: Introduction Metallurgical Slags and their Application Granulation Techniques Recovery of Thermal Energy from Slag Recovery as Chemical Energy Conclus...
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Cooling of a 2 mm diameter slag droplet in air (assumed to be ∼350°C) and temperature distribution in the droplet A series of dry granulation experiments were conducted and recorded with a high ...
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A granulation experiment and a heat exchange experiment were developed in this work to study the mechanisms of both flight dynamics and sensible heat recovery of blast furnace slag. It is shown that the linear velocity of the outer edge of rotary cup is bigger than the escape velocity of slag escaping from the outer edge of rotary cup.
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Centrifugal granulation performance of liquid with various viscosities for heat recovery of blast furnace slag. Appl Therm Eng, 89 (2015), pp. 494-504. View PDF View article View in ... Experimental investigation on molten slag granulation for waste heat recovery from various metallurgical slags. Appl Therm Eng, 103 (2016), pp. 1112 …
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The iron and steel industry (ISI) is pursuing technology breakthroughs to accelerate the transition towards carbon neutrality. Deep cut of CO 2 emission involves with not only technological revolution of producing iron and steel, but also exploiting energy in byproducts and off-process wastes. Molten blast furnace slag (BFS), one of the largest …
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DOI: 10.1016/j.apenergy.2020.115454 Corpus ID: 224980927; Film fragmentation mode: The most suitable way for centrifugal granulation of large flow rate molten blast slag towards high-efficiency waste heat recovery for industrialization
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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 slag discharged from blast furnaces, to produce granules utilizable as fine aggregate in the preparation of concrete, while at the same time ensuring …
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Blast furnace (BF) slag, which is the main byproduct in the ironmaking pro-cess, 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 …
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In the centrifugal-air blast granulation experiments carried out by Tan et al. [60, 61], the number of particles with a diameter of 0.5∼3 mm accounted for 84∼92 % of all the collted particles. Besides, by-products such as slag wool and block were also produced, and their yield could be decreased by increasing the flow rate of the blast air ...
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The DSG technology mainly involved two strategies: slag granulation and heat exchange [10]. Gas quenching granulation technique is a kind of dry slag granulation (DSG) technique. For the gas quenching granulation technique, the molten slag is granulated by aerodynamic force to form droplets which are cooled to form solid …
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Dry Granulation of Molten Blast Furnace Slag and Heat Recovery from Obtained Particles. Yuelin Qin, Xuewei Lv, Chenguang Bai, Guibao Qiu., Book Editor …
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Centrifugal granulation technique is the most feasible method for heat recovery from molten blast furnace (BF) slag. The granulated slag droplets experience a complex cooling process to achieve a ...
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The Kawasaki Steel Corporation is also developing a process for recovering heat from blast furnace slag. This involves granulating the slag by mechanical agitation and recovering heat from the granulation process by radiation and later from the granulated slag particles in a fluidized bed. The slag product is used as an aggregate …
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Introduction. Metallurgical Slags and their Application. Granulation Techniques. Recovery of Thermal Energy from Slag. Recovery as Chemical Energy. …
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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 slag discharged from blast furnaces, to produce granules utilizable as fine aggregate in the preparation of concrete, while at the same time ensuring …
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The molten blast furnace slags, a kind of main by-product in Iron and Steel industry, contains a substantial amount of high-grade thermal energy and untapped …
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In blast furnace slag granulation and ferroalloy slag granulation, ... CO 2 gasification rate analysis of Datong coal using slag granules as heat carrier for heat recovery from blast furnace slag by using a chemical reaction. Energy Fuel, 27 …
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Centrifugal granulation is a crucial step in the most promising heat recovery technique for molten blast furnace slag.Facing the fact that slag viscosity changes during the granulation process, in the present work, visualization experiments were conducted for centrifugal granulation of mixture liquids by a spinning disc. Then, the effect of liquid …
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A large amount of various molten oxides, such as steelmaking slag and lava, is cooled without heat recovery. For example, the amount of slag as a byproduct of steelmaking, over 1723 K in temperature, reaches 30 million tones annually. Although the systems for efficient heat recovery from molten slag have been proposed, the …
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DOI: 10.1016/J.APPLTHERMALENG.2015.06.031 Corpus ID: 106899791; Centrifugal granulation performance of liquid with various viscosities for heat recovery of blast furnace slag @article{Wu2015CentrifugalGP, title={Centrifugal granulation performance of liquid with various viscosities for heat recovery of blast furnace slag}, …
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waste heat recovery process of liquid slag into dry centrifugal granulation process and waste heat recovery process. After dry centrifugal granulation, the temperature of blast furnace slag particles was about 900°C. Then the particles entered the packed bed for heat transfer, resulting in hot air of 500-600°C [5].
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As a valuable byproduct of the iron-making process, blast furnace slag with temperature up to 1450–1650 ° C contains a tremendous amount of sensible heat. Dry granulation and waste heat recovery via a moving bed is an attractive alternative to the conventional water quenching method due to energy-savings and the reduction in water …
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Physical methods to dry granulation and heat recovery. For the slag heat recovery technologies that have been developed up to now, the procedure of slag crushing is always a necessary step. Based on the crushing mechanism, three general physical methods have been promoted: mechanical crushing method, air blast method and …
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Request PDF | Film fragmentation mode: The most suitable way for centrifugal granulation of large flow rate molten blast slag towards high-efficiency waste heat recovery for industrialization | In ...
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Request PDF | On Feb 1, 2014, Dongxiang Wang and others published Theoretical analysis of free-surface film flow on the rotary granulating disk in waste heat recovery process of molten slag | Find ...
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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 …
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In this paper, the slag granulation and heat recovery options are reviewed and given a critical evaluation, aiming to provide a basis for future directions in slag handling. Discover the world's ...
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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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on account of higher heat loads. In order to address these two risks, and determine the feasibility of full-scale blast furnace slag granulation, trials were planned and undertaken with Jindal-Steel-Works Vijayanagar (JSW) [8]. At this site, Ecomaister already had three slag atomization ... Slag Resource Recovery Via Air Granulation ...
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Slag granulation with heat recovery is an essential and emerging technology for sustainable metal production. This technology has been developing for a …
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Slag heat recovery-a contribution to sustainability and CO 2 minimization ... Blast furnaces 86 450 with Granulation 77 (89.5 %) 399 (88.6 %) INBA 37 24 (31.2 % / 27.9 %) 135 104
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Deep cut of CO 2 emission involves with not only technological revolution of producing iron and steel, but also exploiting energy in byproducts and off-process …
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and emissions reduction such as BF slag sensible heat recovery. 2 Blast furnace slag and its utilizations Blast furnace slag is a by-product of blast furnace (BF) ironmaking produce. Every pig iron production is accompany by 0.3 ~ 0.6 tons of blast furnace slag produced with the temperature of 1350 ~1450
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To address this issue, centrifugal granulation-assisted thermal energy recovery (CGATER) is proposed and is regarded as the leading slag treatment technology. The CGATER provides a viable …
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Centrifugal granulation is a crucial step in the most promising heat recovery technique for molten blast furnace slag. Facing the fact that slag viscosity changes during the granulation process, in the present work, visualization experiments were conducted for centrifugal granulation of mixture liquids by a spinning disc.
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The primary objectives of this review paper were: first to pinpoint the key factors and uncertainties limiting slag granulation performance; second to clarify the interrelation of flight, solidification and crystallization of slag droplets; third to link the barriers of waste …
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Sieverding F (1980) Heat recovery by dry granulation of blast 11. Mudersbach D, Drissen P, Motz H (2011) Improved slag quali- furnace slags. Steel Times 208:469–472 ties by liquid slag treatment. In: 2nd international slag valorisa- 35. I.H.I. Ltd. (1980) The dry granulation and heat recovery of the tion symposium.
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