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  • Dry Slag Granulation: A Path to Improving the Safety and

    23-08-2016· The energy in slag is lost through dumping and water granulation processes, and where slag is sold as a by-product, it is for its chemical content only. Here, dry granulation processes also offer advantages including the production of by-products which hold value in both their chemical content and physical properties and heat recovery.

    Dry Granulation of Blast Furnace Slag Steel360 News

    04-04-2019· Dry slag granulation process is essentially to atomize the liquid slag and then to cool the particles rapidly so as to produce a glassy slag. Heat is recovered from the slag in the following ways. As the spray of slag particles moves outwards from the atomizer, heat is lost by radiation to the vessel and by convection to the air moving through the vessel.

    AISTech2018 Dry Slag Granulation The Future Way to

    Dry slag granulation is based on molten slag atomization using a variable speed rotating cup or dish (see Fig. 1). The slag is fed from the slag runner via a vertical refractory lined pipe directly onto the center of the rotating cup.

    Dry Slag Granulation (DSG) YouTube

    09-05-2019· Primetals Technologies has developed a new innovative blast furnace dry slag granulation process with heat recovery at the voestalpine pilot plant in Linz, A...

    Dry Slag Granulation with Heat Recovery ABM Proceedings

    Currently, the slag is granulated in wet-granulation plants using large volumes of water and to date, it has not been possible to utilise the remnant heat energy of the molten slag, which amounts to approximately 1.8 GJ of energy per ton.

    Some Fundamental Aspects of Dry Slag Granulation Process

    The CSIRO’s Dry Slag Granulation (DSG) process is as a continuous -step prtwo ocess as shown in Figure 1. The molten slag is first atomized using a spinning disc and the fine droplets (< 2 mm) produced contact with flowing air and

    RECENT DEVELOPMENTS IN DRY SLAG GRANULATION: A PATH

    2.3 Dry Slag Granulation Significant research and development has occurred in the area of Dry Slag Granulation (DSG) over the past decades. Development of DSG technologies is driven by the desire to improve safety and sustainability of conventional slag handling methods. The most significant advantage of DSG is that it provides a safer and more

    Northam Converter Dry Slag Granulation Hatch

    22-10-2020· However, a dry slag granulation system had not yet been deployed in the non-ferrous industry. Although it has demonstrated success in the steelmaking industry for decades, adoption of a dry granulation solution in non-ferrous industries has been challenged by the technical risks associated with process uncertainties and by the financial risks associated with investing capital in new equipment.

    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.

    RECENT DEVELOPMENTS IN DRY SLAG GRANULATION: A PATH

    2.3 Dry Slag Granulation Significant research and development has occurred in the area of Dry Slag Granulation (DSG) over the past decades. Development of DSG technologies is driven by the desire to improve safety and sustainability of conventional slag handling methods. The most significant advantage of DSG is that it provides a safer and more

    EP2922976B1 Dry slag granulation system and method

    Dry slag granulation system and method Download PDF Info Publication number EP2922976B1. EP2922976B1 EP13794861.8A EP13794861A EP2922976B1 EP 2922976 B1 EP2922976 B1 EP 2922976B1 EP 13794861 A EP13794861 A EP 13794861A EP 2922976 B1 EP2922976 B1 EP 2922976B1 Authority EP European Patent Office Prior art keywords tundish granulator

    RECENT DEVELOPMENTS IN DRY SLAG GRANULATION: A PATH

    Molten slag from pyrometallurgical furnaces is tapped at high temperature, carrying a large amount of thermal energy. But the common slag dumping and water granulation methods used for slag treatment do not permit energy recovery. Furthermore, water is present in these processes and while operations are designed to minimize risks of steam explosions, from the contact of slag with water, these

    Dry Granulation of Blast Furnace Slag for Energy Recovery

    09-08-2014· Dry Granulation of Blast Furnace Slag for Energy Recovery. Around 300 kg of liquid slag is produced as byproduct while producing one ton of hot metal in a blast furnace (BF). This slag is at a temperature of around 1500 deg C and has a sensible heat of approximately 400 M Cal per ton. BF slag is rich in CaO, SiO2, Al2O3, and MgO which are

    CFD modelling of dry slag granulation using a novel

    Figure 4: Predicted relationship between slag tapping rate and disc spinning speed for maintaining different film thickness (Disc radius: 25 mm, Liquid slag viscosity: 0.7 Pa s, Liquid slag density: 2590 kg m-3). In summary, CFD modelling has played a key role in the design, operation and scale up of CSIRO’s dry slag granulation process.

    slag granulation description LighthouseChristengemeente

    dry granulation copper slag. Description: Ores, slag and ash. with a manganese content of 20 % or more, calculated on the dry weight. Description: Copper ores and concentrates. Description: Granulated slag (slag sand) from the manufacture of iron or steel. Slag granulation water (inlet and effluent), Anode casting cooling water (inlet ..

    Blast Furnace Slag Granulation / Ironmaking / Our

    Slag handling is an important aspect of modern blast furnace operation. Today, blast furnace slag is a saleable product (granulated slag sand used as CO 2-friendly substitute of clinker in cement production) rather than a difficult and costly waste material.Paul Wurth has developed the INBA ® slag granulation process, incorporating our proprietary dynamic INBA dewatering drum.

    Products › Ironmaking and steelmaking › Slag Granulation

    Slag granulation using water sprays is now an established technology 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. The slag granulation plant comprises three sections: for granulation, dewatering and storage.

    Blast Furnace Slag Granulation at the Cast House IspatGuru

    05-05-2013· The granulated slag layer at the bottom of the drum creates a self filtering effect. After de-watering the residual moisture of the granulated slag is around 10 % to 12 %. The de-watered water is cleaned, cooled and recycled. The dried slag is conveyed to the granulated slag storage for dispatch to

    Slag Granulation with Continuous Dewatering Ironmaking

    second granulation tank, one granulation unit can handle the slag of two tap holes. `Continuous filtering and evacuation of dewatered slag sand up to its storage facility without inter-ruptions for purging. ` High reliability. `Measurement of slag flow, due to the design of the drum and the dewatering process.

    RECENT DEVELOPMENTS IN DRY SLAG GRANULATION: A PATH

    2.3 Dry Slag Granulation Significant research and development has occurred in the area of Dry Slag Granulation (DSG) over the past decades. Development of DSG technologies is driven by the desire to improve safety and sustainability of conventional slag handling methods. The most significant advantage of DSG is that it provides a safer and more

    RECENT DEVELOPMENTS IN DRY SLAG GRANULATION: A

    Molten slag from pyrometallurgical furnaces is tapped at high temperature, carrying a large amount of thermal energy. But the common slag dumping and water granulation methods used for slag treatment do not permit energy recovery. Furthermore, water is present in these processes and while operations are designed to minimize risks of steam explosions, from the contact of slag with water, these

    Dry slag granulation with integrated heat Publications

    27-06-2011· Dry slag granulation could make a fundamental change in slag treatment. In this new approach, molten slag is atomized under centrifugal forces on a spinning disc, and the droplets generated are quenched and solidified quickly using air, with simultaneous heat recovery.

    technology dry granulation of copper slag

    dry granulation copper slag (PDF) Economic and environmental evaluation of slag dry granulation Aug 1, 2018 Dry granulation of slag has been developed as an alternative treatment process dry slag granulation process was proposed as early as the 1980s and has since Rock Smelting of Copper Ores with Waste Heat Recovery Metal Recovery from Steelmaking Slag.

    CFD modelling of dry slag granulation using a novel

    Figure 4: Predicted relationship between slag tapping rate and disc spinning speed for maintaining different film thickness (Disc radius: 25 mm, Liquid slag viscosity: 0.7 Pa s, Liquid slag density: 2590 kg m-3). In summary, CFD modelling has played a key role in the design, operation and scale up of CSIRO’s dry slag granulation process.

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

    07-11-2013· Using dry slag granulation at integrated steel and iron mills will gain access to the sensible heat of the blast furnace slag. The recovered energy can be used for the production of steam or electricity or for other useful preheating processes. An energy

    slag granulation description LighthouseChristengemeente

    dry granulation copper slag. Description: Ores, slag and ash. with a manganese content of 20 % or more, calculated on the dry weight. Description: Copper ores and concentrates. Description: Granulated slag (slag sand) from the manufacture of iron or steel. Slag granulation water (inlet and effluent), Anode casting cooling water (inlet ..

    TPT: Dry Granulation of Blast Furnace Slag for Heat

    Dry Granulation of Blast Furnace Slag for Heat Recovery. Blast furnace slag is known as a 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 results in a worldwide annual production of about

    THE DRY BLAST- FURNACE SLAG GRANULATION AS RESOURCE

    THE DRY BLAST- FURNACE SLAG GRANULATION AS RESOURCE AND ENERGY ECONOMY IN THE METALLURGY Elena Konchenko Donetsk National Technical University, Ukraine 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.

    Slag Atomising Technology: Unlocking Real Value

    1.2 Water Granulation Although not as common as dry slag handling, water granulation of slag represents a significant part of the in-dustry. Two major forms of granulation systems do exist: 1) at the end of launder attached directly to the furnace or 2) at a dedicated facility designed to accept slag

    RECENT DEVELOPMENTS IN DRY SLAG GRANULATION: A PATH

    2.3 Dry Slag Granulation Significant research and development has occurred in the area of Dry Slag Granulation (DSG) over the past decades. Development of DSG technologies is driven by the desire to improve safety and sustainability of conventional slag handling methods. The most significant advantage of DSG is that it provides a safer and more

    WO2013030016A1 Dry slag granulation device &

    A directional dry slag granulation device comprises a rotary atomising granulator having a centreline axis of rotation (29); a slag stream feed (3b); and a position controller (33). A slag stream fall point (19) on the rotary granulator (30) for slag (11) from the slag stream feed is offset from the centreline axis of rotation of the rotary granulator.

    Dry slag granulation the environmentally friendly way to

    SFX and Citation Linker. Frequently asked questions concerning SFX; Electronic books. The e-book database EBC; Audiovisual media; Research data; Alliance and national licences

    DRY SLAG GRANULATION SYSTEM AND METHOD

    1. A dry slag granulation system comprising a rotary atomising granulator (6) and a tundish (3); wherein the granulator comprises a cup or disk (5); wherein the tundish comprises a delivery outlet (4), an overflow outlet (7) and a set of moveable mounts (8a, 8b); and wherein the device further comprises at least one of a tundish weight sensor, a granulator drive motor power sensor (13), a

    A significant change in slag treatment industrial dry

    19-04-2021· A significant change in slag treatment industrial dry slag granulation, Thomas Steinparzer, Primetals Technologies. Presentation given at the Virtual Global Slag Seminar 2020 on 6 May 2020. Related Videos

    Reactivity and performance of dry granulation blast

    01-01-2019· The dry granulation slag were ground using ball milling, and then, the slag powder were mixed with clinker. Fig. 2 shows particle size distributions for cement clinker and dry granulation slag with different milling time, which were determined by using a laser diffraction particle size analyzer. The particle size distribution for dry granulation slag with 20-min-milled was about 36% of the

    TPT: Dry Granulation of Blast Furnace Slag for Heat

    Dry Granulation of Blast Furnace Slag for Heat Recovery. Blast furnace slag is known as a 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 results in a worldwide annual production of about

    China adopts Australian (CSIRO) dry slag granulation

    15-03-2015· Australian technology which harvests molten iron blast furnace slag and converts it into a granulated blast furnace slag make cement is being trialled in China where 60% of the world’s iron blast furnace slag is produced. The process is considered environmentally within metal production, called Dry Slag Granulation (DSG), reduces water use and cuts greenhouse gas emissions.

    THE DRY BLAST- FURNACE SLAG GRANULATION AS RESOURCE

    THE DRY BLAST- FURNACE SLAG GRANULATION AS RESOURCE AND ENERGY ECONOMY IN THE METALLURGY Elena Konchenko Donetsk National Technical University, Ukraine 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.

    Slag Granulation with Continuous Dewatering Ironmaking

    second granulation tank, one granulation unit can handle the slag of two tap holes. `Continuous filtering and evacuation of dewatered slag sand up to its storage facility without inter-ruptions for purging. ` High reliability. `Measurement of slag flow, due to the design of the drum and the dewatering process.