slag blast granulating heat recovery in Mexico
Current Status of Heat Recovery from Granulated Slag
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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Granulation and Heat Recovery from Metallurgical Slags
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. Metallurgical slags are produced at a massive rate of over 750 Mt/year, and carry a thermal energy equivalent to 40 Mt/year of coal.
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Centrifugal-Granulation-Assisted thermal energy recovery …
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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RESEARCH OVERVIEW ON RECOVERY OF WASTE HEAT …
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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Research status of centrifugal granulation, physical heat recovery …
Physical heat recovery after granulation. Once BF slag with ultra-high temperature are granulated into fine enough droplets, they begin to exchange heat with cooling medium, and the entire heat recovery process can be divided into two stages. ... Centrifugal granulation performance of liquid with various viscosities for heat recovery …
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Waste Heat Recovery from Blast Furnace Slag by Chemical …
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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Dry Granulation of Molten Blast Furnace Slag …
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 ...
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Heat recovery in dry granulation of molten blast furnace slag
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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Flight Dynamics and Sensible Heat Recovery of Granulated Blast Furnace Slag
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 …
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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Theoretical analysis of free-surface film flow on the rotary
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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Exploiting the Molten Slag to Decarbonize Iron …
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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Waste Heat Recovery from Blast Furnace Slag by …
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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Centrifugal Granulation of Molten BF Slag in Film …
BF slag to yield a high vitreous content product, which is used for cement production [3]. However, most of the thermal energy carried by the molten BF slag is wasted. In order to recover the thermal energy in molten BF slag, a number of dry granulation techniques, combined with methods for heat recovery were proposed, e.g., the centrifugal ...
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Thermal energy recovery from high-temperature blast …
In the present study, a technique for thermal energy recovery from high-temperature slag particles using a gravity bed waste heat boiler was exploited. The heat …
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Heat recovery in dry granulation of molten blast furnace slag …
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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Research status of centrifugal granulation, physical heat recovery …
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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Film fragmentation mode: The most suitable way for …
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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Centrifugal granulation performance of liquid with various …
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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Flight Dynamics and Sensible Heat Recovery of …
Granulation of blast furnace slag is the first step for its heat recovery. Due to environmental and energy issues, dry centrifugal granulation has received a …
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Centrifugal granulation performance of liquid with various …
Request PDF | On Oct 1, 2015, Jun-Jun Wu and others published Centrifugal granulation performance of liquid with various viscosities for heat recovery of blast furnace slag | Find, read and cite ...
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A Review of Granulation Process for Blast Furnace Slag
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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Dry Granulation of Molten Blast Furnace Slag and Heat …
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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A review of waste heat recovery technologies towards molten slag …
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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Experimental investigation on granulation characteristics …
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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(PDF) Heat Recovery from High Temperature Slags: A
Waste heat recovery from high temperature slags represents the latest potential way to remarkably reduce the energy consumption and CO2 emissions of the steel industry.
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Dry Granulation of Blast Furnace Slag for Energy Recovery
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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Experimental investigation on molten slag granulation for waste heat
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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Numerical Study on Solidification Behaviors of a Molten Slag …
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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Experimental investigation on molten slag granulation for waste heat
DOI: 10.1016/J.APPLTHERMALENG.2016.05.011 Corpus ID: 112654326; Experimental investigation on molten slag granulation for waste heat recovery from various metallurgical slags @article{Liu2016ExperimentalIO, title={Experimental investigation on molten slag granulation for waste heat recovery from various …
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