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dry slag granulation

Dry Slag Granulation (DSG) YouTube

May 09, 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...

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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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Dry Granulation of Blast Furnace Slag Steel360 News

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

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Dry Slag Granulation: A Path to Improving the Safety and

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.

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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.

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TPT: Dry Granulation of Blast Furnace Slag for Heat Recovery

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.

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AISTech2018 Dry Slag Granulation The Future Way to

dry slag granulation pilot plant is outlined below: Process Air Supply A radial fan is installed to supply the granulator and the various air cooling chambers with process air. Based on the thermal balance of the granulator an air amount of maximal 180,000 Nm³/h is provided to cool the granules down to target temperature. This air amount and

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Dry Granulation of Blast Furnace Slag for Energy Recovery

Aug 09, 2014· The 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. The atomization is done using a rotary cup air blast atomizer. The particles cool as they travel through the air and are then cooled further in a fluidized bed. Both of these processes provide the

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Eaf Slag Granulation Plant

Dry Slag Granulation (DSG) YouTube. 9/05/2019· Primetals Technologies has developed a new innovative blast furnace dry slag granulation process with heat recovery at the voestalpine pilot plant in Linz, Austria. You want to know more about our. Author: Primetals Technologies; plant Slag industry news from Global Slag

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Cutting-Edge By-Product Recycling for Iron- & Steelmaking

Dry slag granulation with heat recovery. Primetals Technologies, voestalpine Stahl, the FEhS Building Materials Institute and the University of Leoben joined forces in an R&D program to develop a new dry-granulation technology using air to cool molten slag and recover the lost heat energy.

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(PDF) Dry slag granulation with integrated heat recovery

Process flow diagram for SVAI/Primetals Technologies' dry slag granulation system with heat recovery and steam generation[42,43] (color figure online) Samples of wet and dry granulated iron blast

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Design and Operation of Dry Slag Granulation Pilot Plant

CSIRO has been working on a dry granulation process, integrated with heat recovery, since 2002. It involves a rotary disc that atomizes molten slag to produce liquid droplets, which are rapidly quenched to become solid granules. The hot granules are fed to a counter-current moving packed bed heat exchanger, where they are further cooled and finally discharged at close to ambient temperature.

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Cutting-Edge By-Product Recycling for Iron- & Steelmaking

Dry slag granulation with heat recovery. Primetals Technologies, voestalpine Stahl, the FEhS Building Materials Institute and the University of Leoben joined forces in an R&D program to develop a new dry-granulation technology using air to cool molten slag and recover the lost heat energy.

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RECENT DEVELOPMENTS IN DRY SLAG GRANULATION: A

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

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‘Dry’ Granulation of Slags for Producing Cement Binder

The authors will present preliminary results from slag atomisation/dry granulation testwork (0.5 2.5 kg scale) and associated modelling studies, conducted using a ‘synthetic’ and industrial ironmaking slag. Outcomes from a techno-economic study on production of cement utilising wet or dry atomised slag granulate will also be discussed

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(PDF) 'Dry' Granulation of Slags for Producing Cement Binder

'Dry' granulation (atomisation) is emerging as an alternative technology, the resulting solid product does not require drying, and possibilities exist for recovering heat energy from the hot slag.

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DRY SLAG GRANULATION WITH HEAT RECOVERY*

Dry Granulation Concept. Dry slag granulation is based on molten slag atomisation using a variable speed rotating cup or dish (see Figure 1). The slag is delivered on to the centre of the cup from a slag runner via a vertical refractory lined pipe. The rotation of the cup forces the slag outwards to the cup lip where it is atomised (see Figure 2).

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Dry slag granulation with integrated heat Publications

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. The process produces solid slag granules suitable for cement-making and hot

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The effect of size distribution of slag particles obtained

Feb 15, 2020· 2.2. Methods. The solid slag particles from dry granulation were ground in a ball mill. Then, the slag powder was mixed with cement clinker. The ball mill used a fixed rotating speed of 250 rpm, and the diameters of the metal balls were 5 mm, 8 mm, 10 mm, 12 mm, and 15 mm, with mass fractions of 30%, 25%, 25%, 10%, and 10%, respectively [].

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Granulated Blast Furnace Slag (GBS) YouTube

May 06, 2016· National Slag Association Iron and Steel Slag Products Duration: 3:52. National Slag Association 8,325 views. 3:52. 3D Interactive Blast Furnace for Training Duration: 1:18.

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Granulation and Heat Recovery from Metallurgical Slags

As a result of extensive R&D in this area, the slag-processing technologies are slowly converging around dry granulation combined with heat recovery. 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

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Dry Granulation to Provide a Sustainable Option for Slag

Dry slag granulation is destined to replace conventional water granulation of molten slags in the not too distant future, creating a paradigm shift in the history of slag treatment. In this dry process, molten slag is atomised under centrifugal forces on a spinning disc and the slag droplets generated are quenched and solidified quickly using air.

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Granulated Slag at Best Price in India

Granulated Blast Furnace Slag Ggbs is the by product from controlled process of Iron Proction from the house of the Recons Group. Granulated Blast furnace Slag is the by product obtained in the manufacture of pig Iron in blast furnaces at around 1400° to 1500°C in the molten form. The slag is obtained by rapidly

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Current status and future direction of CSIRO's dry slag

Dry slag granulation (DSG) could make a fundamental change in slag treatment. In this 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. The process produces solid slag granules suitable for cementmaking and hot

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