Granulation characteristics of molten blast furnace slag ...

2018-1-1  The molten slag granulation experimental system consisted mainly of a molten slag supply unit, a centrifugal-air blast granulation unit and an image capture unit, as shown in Fig. 1.For the molten slag supply unit, we employed a high-temperature furnace with a graphite crucible to melt the BF slag.

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(PDF) Slag granulation systems for blast furnaces

Slag Granulation Systems for Blast Furnaces Page 9 of 12 B-2-033. Figure 8 Hot wate r granulation system at a 7500 thm/d fu rnace. The stack needs to be sufficiently high to disperse the steam ...

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Blast Furnace Slag Granulation at the Cast House – IspatGuru

2013-5-5  Blast Furnace Slag Granulation at the Cast House. A blast furnace (BF) is a closed system into which iron-bearing materials (iron ore lump, sinter and/or pellets), fluxes (slag formers) and reducing agents (i.e. coke) are continuously fed from the top of the furnace shaft through a charging system. The products of reduction process which takes ...

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Products › Ironmaking and steelmaking › Slag Granulation ...

A modern blast furnace can produce more than a million tons per annum of slag. Slag granulation using water sprays is now an established that not only simplifies blast furnace casting floor operations but also provides an economical route for producing of a valuable raw material for a host of industries.

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AISTech2018 Dry Slag Granulation – The Future Way to ...

2018-7-27  Each year, approx. 400 million tons of blast furnace slag is produced worldwide with a tapping temperature of around 1,500°C. Currently, the slag is granulated in wet granulation plants using large volumes of water and to date it has not been possible to utilize the remnant heat energy of the molten slag, with approx. 1.7 GJ of energy per ton.

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Reactivity and performance of dry granulation blast ...

2019-1-1  1. Introduction. Blast furnace slag, which is composed mainly of CaO, SiO 2, Al 2 O 3 and MgO, is the by-product of iron making. The molten slag is cooled rapidly by water quenching, and it solidifies into a sand-like product containing high content of silica and alumina in an amorphous state [].Because the finely ground water cooled slag has latent hydraulic cementitious properties, it has ...

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Some Fundamental Aspects of Dry Slag Granulation Process

2014-7-8  molten blast furnace slags and recovered the heat in form of hot air. The product was found to be more than 98% glassy and showed comparable cementitious properties with water granulated slags. Furthermore, it was demonstrated that sulphur emission from the slag could be suppressed through dry granulation with air, thus avoiding sulphur emission to

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Effect of Water Granulation Conditions on Density and ...

The water granulation conditions for producing high density, coarse granulated blast furnace slag were investigated in a laboratory-scale experiment. The influence of slag temperature, water temperature and

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Design and Operation of Dry Slag Granulation Pilot Plant ...

2019-2-22  Sakakibara M (1990) Development of the on heat recovery from molten slag of blast furnace. Tetsu Hagane 76:1587–1596. Article Google Scholar 27. Jahanshahi S, Xie D (2012) Current status and future directions of CSIRO’s dry slag granulation

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(PDF) Slag granulation systems for blast furnaces

Slag Granulation Systems for Blast Furnaces Page 9 of 12 B-2-033. Figure 8 Hot wate r granulation system at a 7500 thm/d fu rnace. The stack needs to be sufficiently high to disperse the steam ...

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Blast Furnace Slag Granulation Iron Making WRT ...

2021-7-11  Blast Furnace Slag Granulation Saint-Gobain ceramic materials extend the lifetime of slag granulation equipment over traditional refractory lined and hardened steel components. Abrasion and corrosion can hinder operational efficiency and increase downtime. Wear resistant materials from Saint-Gobain provide excellent abrasion and corrosion ...

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Dry Granulation of Blast Furnace Slag Steel360 News

2019-4-4  Dry Granulation of Blast Furnace Slag. Liquid slag produced in a blast furnace (BF)is at a temperature of around 1500?C and has a sensible heat of around 400Mcal/ton. BF slag is rich in CaO, SiO2, Al2O3, and MgO which are similar to the components of Portland cement. When this liquid BF slag is cooled fast enough then the solidified slag

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Cognition on the Molten Blast Furnace Slag Granulation ...

Introduce characters and applications of granulation techniques of the molten blast furnace slag in contemporary China, describe characters and design ideas of two types of granulation boxes, represent three types of circulating granulation water systems, put forward matching proposal between the molten slag granulation system and the circulating granulation water system, analyze contemporary ...

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CN102888473A - Blast furnace slag granulation and waste ...

The invention discloses a blast furnace slag granulation and waste heat recovery device which mainly comprises a slag sliding port (1), a liquid slag bucket (2), a quick cooling cavity (3), a star-shaped slag dumping wheel (9) and an air cooling cavity (10), wherein the quick cooling cavity (3) is further divided into an upper granulation wheel set part and a lower water quenching part; and ...

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Blast furnace slag obtained from dry granulation method

2016-11-23  Blast furnace slag obtained from water quenching is generally used for cement production. However, harmful waste, such as SO2, H2S and heavy metals, is discharged into the surrounding environment after water quenching. Dry granulation is an ...

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Research status of centrifugal granulation, physical heat ...

2021-8-1  The temperature of the discharged blast furnace slag (BF slag) is between 1450 ° C and 1650 ° C, which carries a substantial amount of high-grade thermal energy and untapped resources [4,5]. Considering that each ton of crude steel is accompanied by the production of 0.3 tons of BF slag [ 6 ], in 2019, the production of BF slag is ...

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{Study on mineralogical crystallization of granulation of ...

2018-9-24  Keywords: blast furnace slag; crystallization; simulation; granulation; acidity. INTRODUCTION Blast furnace slag (BFS) is the main byproduct of iron production and is pro-duced at a rate of 300–350 kg t–1 taking away about 1.5×106 kJ t–1 of sensible heat. Currently, traditional water quenching wastes a large amount of water and pollutes ...

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Slag Granulation with Continuous Dewatering Ironmaking

2021-6-16  The slag granulation area links the hot slag runner of the blast furnace and the INBA dewatering system. This link is directly accomplished through the use of a granulation tank. The granulation tank creates a compact layout, which allows a reduced water circuit design with op-

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Optimization for blast furnace slag dry cooling ...

Since the large accumulation amount of blast furnace slag (BFS) with recycling value, it has become a hot topic for recovery utilization. Compared with the existing various BFS granulation process, the dry granulation process can promote the use of blast furnace granulated slag as cement substitute and concrete admixtures. Our research group developed a novel dry cooling granulation experiment ...

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Cognition on the Molten Blast Furnace Slag Granulation ...

Introduce characters and applications of granulation techniques of the molten blast furnace slag in contemporary China, describe characters and design ideas of two types of granulation boxes, represent three types of circulating granulation water systems, put forward matching proposal between the molten slag granulation system and the circulating granulation water system, analyze contemporary ...

More

CN102888473A - Blast furnace slag granulation and waste ...

The invention discloses a blast furnace slag granulation and waste heat recovery device which mainly comprises a slag sliding port (1), a liquid slag bucket (2), a quick cooling cavity (3), a star-shaped slag dumping wheel (9) and an air cooling cavity (10), wherein the quick cooling cavity (3) is further divided into an upper granulation wheel set part and a lower water quenching part; and ...

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THE DRY BLAST- FURNACE SLAG GRANULATION AS

2011-6-29  Slag treatment is the main ecological problem of the modern Ukraine metallurgy manufacture. The blast-furnace slag is the by-product of the ironmaking process. It has produced in the blast-furnace in the amount of 300 kg per tonne of pig iron. Now in Ukraine the blast-furnace slag is treated by impinging much water for granulation. This ...

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{Study on mineralogical crystallization of granulation of ...

2018-9-24  Keywords: blast furnace slag; crystallization; simulation; granulation; acidity. INTRODUCTION Blast furnace slag (BFS) is the main byproduct of iron production and is pro-duced at a rate of 300–350 kg t–1 taking away about 1.5×106 kJ t–1 of sensible heat. Currently, traditional water quenching wastes a large amount of water and pollutes ...

More

Blast furnace slag obtained from dry granulation method

2016-11-23  Blast furnace slag obtained from water quenching is generally used for cement production. However, harmful waste, such as SO2, H2S and heavy metals, is discharged into the surrounding environment after water quenching. Dry granulation is an ...

More

slag granulation process

Blast Furnace Slag Granulation / Ironmaking / Our . Paul Wurth has developed the INBA ® slag granulation process, incorporating our proprietary dynamic INBA dewatering drum With about 300 references, it is the most popular and effective means of processing blast furnace slag in the world today The process is highly flexible; and the compact subplant can be applied to any furnace configuration ...

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Granulated Blast Furnace Slag ASA Australasian (iron ...

Granulated Blast Furnace Slag (GBFS) Brief Description . GBFS is formed when molten blast furnace slag (BFS) is rapidly quenched from the furnace, rather than left to slowly solidify by air-cooling.. Physical Description. On casual examination, GBFS would pass for river sand, with a top size of about 6mm.

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Optimization for blast furnace slag dry cooling ...

Since the large accumulation amount of blast furnace slag (BFS) with recycling value, it has become a hot topic for recovery utilization. Compared with the existing various BFS granulation process, the dry granulation process can promote the use of blast furnace granulated slag as cement substitute and concrete admixtures. Our research group developed a novel dry cooling granulation experiment ...

More

Slag Granulation with Continuous Dewatering Ironmaking

2021-6-16  The slag granulation area links the hot slag runner of the blast furnace and the INBA dewatering system. This link is directly accomplished through the use of a granulation tank. The granulation tank creates a compact layout, which allows a reduced water circuit design with op-

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Hatch Ironmaking Technologies Dry Slag Granulation ...

Dry Slag Granulation. Water granulation is the most commonly used method to handle blast furnace slag and requires a granulation and a dewatering step to process the slag. In water granulation, the energy in the slag is lost from water evaporation and cooling and is difficult or impossible to recover.

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