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

2016-08-23  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, therefore, augments the methods by which ...

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

2019-02-22  CSIRO Dry Slag Granulation Process Overview. The CSIRO dry granulation process involves a two-step operation involving a granulator and a moving bed counter-current heat exchanger as shown in Fig. 1 . The granulator receives and atomizes molten slag to produce liquid droplets, which are rapidly quenched to become solid granules. The hot granules are fed to a second unit, a counter

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

Obviously “dry” granulation requires no subsequent drying of the product. This leads to a CO 2 reduction potential of about 30 kg per ton in comparison with wet process. Given global slag sand production of approximately 210 million tons of slag sand (2007), this equivals to a potential CO 2 reduction of more than 6.3 million tons per year.

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(PDF) Dry slag granulation with integrated heat recovery

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 ...

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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. Hatch’s dry slag granulation process uses air to directly granulate slag. A stream of hot ...

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Dry Granulation of Blast Furnace Slag Steel360 News

2019-04-04  Dry slag granulation process is essentially to atomize the liquid slag and then to cool the particles rapidly so as to produce a Limestoney slag. Atomization is done using a rotary cup air blast atomizer (Fig 1). The particles cool as they travel through the air and are then cooled further in a fluidized bed. Both of these cooling processes provide the rapid cooling necessary for the formation of ...

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Reactivity and performance of dry granulation blast ...

2019-01-01  Dry granulation, as a new process for molten blast furnace slag treatment, is an attractive alternative to water quenching. In this study, the performance of dry granulation slag in slag cement blends was investigated. The results demonstrated that the early strength for dry granulation slag cement mortar was too low, which is less than 50% of the strength for the cement clinker. After 28

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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. Hatch’s dry slag granulation process uses air to directly granulate slag. A stream of hot ...

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Some fundamental aspects of the dry slag granulation process

Some fundamental aspects of the dry slag granulation process. Yuhua Pan. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 35 Full PDFs related to this paper. READ PAPER. Some fundamental aspects of the dry slag granulation process. Download. Some fundamental aspects of the dry slag granulation process . Yuhua Pan ...

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Reactivity and performance of dry granulation blast ...

2019-01-01  Dry granulation, as a new process for molten blast furnace slag treatment, is an attractive alternative to water quenching. In this study, the performance of dry granulation slag in slag cement blends was investigated. The results demonstrated that the early strength for dry granulation slag cement mortar was too low, which is less than 50% of the strength for the cement clinker. After 28

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DRY SLAG GRANULATION WITH HEAT RECOVERY*

site of our industrial partner to investigate the dry slag granulation process in an industrial scale iron and steelmaking environment. The development of this plant is now underway and is scheduled for installation in 2016. 1.1 Substitution of Cement Clinker with Slag Sand Traditional manufacturing of cement clinker from limestone, sand, clay and other components requires a high-temperature ...

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RECENT DEVELOPMENTS IN DRY SLAG GRANULATION: A PATH

introduce the Ecomaister-Hatch dry slag granulation process, and elaborate on future applications of the technology in the processing of argon oxygen decarburization and blast furnace slags. Keywords: Dry slag granulation; Atomization; Energy recovery, Steam explosion. 1 Global Director, Technology Development, Hatch Ltd., 2800 Speakman Drive, Mississauga, Ontario, Canada L5K2R7. 2 ...

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Dry slag granulation with integrated heat recovery

2011-06-27  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 air of 500-600 degC as a heat

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Northam Converter Dry Slag Granulation - Hatch Ltd

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 ...

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The Newfashioned Technology Dry Granulator Process With ...

The Newfashioned Technology Dry Granulator Process With Saving Energy Dewo machinery can provides complete set of crushing and screening line, including Hydraulic Cone Crusher, Jaw Crusher, Impact Crusher, Vertical Shaft Impact Crusher (Sand Making Machine), fixed and movable rock crushing line, but also provides turnkey project for cement production line, ore beneficiation production line and ...

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Dry Slag Granulation-The Environmentally Friendly Way to ...

Dry granulation requires no subsequent drying of the product in the cement making process leading to a CO_2 reduction of roughly 30 kg/t compared with a similar sized wet system. This project is a major RD exercise now being undertaken by Siemens VAI in conjunction with industrial and scientific partners. This paper will present the concept of a dry slag granulation unit that produces cement ...

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function of slag granulation plant

Some Fundamental Aspects of Dry Slag Granulation Process. Some Fundamental Aspects of the Dry Slag GranulationProcess Sharif Jahanshahi*, Yuhua Pan and Dongsheng Xie CSIRO Minerals Down Under National Research Flagship, Clayton, Victoria, 3168, Australia Abstract: There is a growing interest in development of a dry slag granulation (DSG) process so as to recover the ... Ground granulated

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Some fundamental aspects of the dry slag granulation process

Some fundamental aspects of the dry slag granulation process. Yuhua Pan. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 35 Full PDFs related to this paper. READ PAPER. Some fundamental aspects of the dry slag granulation process. Download. Some fundamental aspects of the dry slag granulation process . Yuhua Pan ...

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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

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Some Fundamental Aspects of the Dry Slag Granulation Process

【Abstract】 There is a growing interest in development of a dry slag granulation(DSG) process so as to recover the sensible and latent heats from molten slags and convert iron blast furnace slags into a Limestoney phase that is a suitable replacement for Portland cement.The combination of waste heat recovery and conversion of slag into a saleable product could result in significant reductions ...

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EP3022165A1 - Process and apparatus for dry granulation of ...

A process for producing substantially dry slag granules comprises adding a controlled amount of water to a molten stream of slag, and granulating the slag to produce solidified slag comprising substantially dry slag granules and slag wool. An apparatus for producing substantially dry slag granules comprises: (a) an inclined surface having an upper and lower ends for receiving and discharging ...

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Northam Converter Dry Slag Granulation

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 ...

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

2013-11-07  increase could be measured. With the obtained data, process optimization can be done and a scale up for further investigations can be realized in the future. 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

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Dry Slag Granulation-The Environmentally Friendly Way to ...

Dry granulation requires no subsequent drying of the product in the cement making process leading to a CO_2 reduction of roughly 30 kg/t compared with a similar sized wet system. This project is a major RD exercise now being undertaken by Siemens VAI in conjunction with industrial and scientific partners. This paper will present the concept of a dry slag granulation unit that produces cement ...

Get Price

Dry Slag Granulation with Waste Heat Recovery

2016-08-09  CSIRO’s Dry Slag Granulation Process Technical Challenges – Optimum disc and reactor design – Handling of hot granules – Compact reactor for efficient recovery of high grade waste heat and lower capital cost Concept Development 2006/7 Motor Air Hotair >600 C Discharge 500 C 100 C Slag 1500 C Air ICST 2012, Dresden 6 7.

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The Newfashioned Technology Dry Granulator Process With ...

The Newfashioned Technology Dry Granulator Process With Saving Energy Dewo machinery can provides complete set of crushing and screening line, including Hydraulic Cone Crusher, Jaw Crusher, Impact Crusher, Vertical Shaft Impact Crusher (Sand Making Machine), fixed and movable rock crushing line, but also provides turnkey project for cement production line, ore beneficiation production line and ...

Get Price

function of slag granulation plant

Some Fundamental Aspects of Dry Slag Granulation Process. Some Fundamental Aspects of the Dry Slag GranulationProcess Sharif Jahanshahi*, Yuhua Pan and Dongsheng Xie CSIRO Minerals Down Under National Research Flagship, Clayton, Victoria, 3168, Australia Abstract: There is a growing interest in development of a dry slag granulation (DSG) process so as to recover the ... Ground granulated blast ...

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