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

23/08/2016  For slag handling to become inherently safe, our industry must eliminate the potential contact of water with molten slag. This is today feasible with the advent of dry granulation technologies, a review of which is presented, and it thus falls to us, in the metallurgical sector, to lead the way in their final stages of development and adoption.

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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.

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DRY SLAG GRANULATION WITH HEAT RECOVERY*

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.

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Some Fundamental Aspects of Dry Slag Granulation Process

In 2006, the Australian steel industry (BlueScope Steel and OneSteel) was engaged in this project and the conceptual process was proven through a series of tests using a purpose built compact and veryprototype unit that dry granulated molten blast furnace slags and recovered the heat in form of hot air. The product was found to be more than 98% Limestoney and showed comparable cementitious ...

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Dry Slag Conveyor - Loibl Förderanlagen GmbH

Dry deslaggers from Loibl are operated without water. Furthermore, the dry discharge of bottom ash or bottom slag allows a more efficient separation and utilization of the combustion residues. Separation of ferrous and non-ferrous metals from the slag is improved, thus achieving a higher quality of the reusable metals. pitch angle 0° up to 90°

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(PDF) Dry slag granulation with integrated heat recovery

Blast furnace slag (BFS) is a by-product of iron production in a blast furnace. The global production of slag is estimated to reach around 450 million tons per year and the value is expected to...

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How to Make Cement From Blast-Furnace Slag

23/04/2017  The dried granulated slag is mixed with a predetermined quantity of dry slaked lime and ground to an impalpable powder. It is then ready for use as cement. The slag sand, after being drained, still contains a large percentage of adhering water. This adhering water must be driven off until that remaining is less than 1 %.

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Ash and Slag Conveyors - Loibl Förderanlagen GmbH

Ash and Slag Conveyors Loibl offers individual and field-proven ash and slag removal systems for combustion residues of different, solid fuels. We plan, design and manufacture solutions adapted to your requirements for ash and slag conveying (fly ash, grate ash, bottom ash) both in wet and dry operation.

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Some Fundamental Aspects of Dry Slag Granulation Process

In 2006, the Australian steel industry (BlueScope Steel and OneSteel) was engaged in this project and the conceptual process was proven through a series of tests using a purpose built compact and veryprototype unit that dry granulated molten blast furnace slags and recovered the heat in form of hot air. The product was found to be more than 98% Limestoney and showed comparable cementitious ...

Get Price

DRY SLAG GRANULATION WITH HEAT RECOVERY*

same criteria as wet-granulated slag for use in the cement industry. Phase 1 of the project has now been completed where a technical plant was set up at the University of Leoben in 2012. A series of dry-slag granulation campaigns were carried out using remelted blast furnace slag. The elevated offgas temperatures and the quality of the slag product as verified by the FEhS Building Material ...

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Global Slag

Dry slag granulation saves on transportation costs owing to the dry product, involves no drying at the cement factory, the dry granules do not freeze in winter thanks to low water content and the granulated slag has a higher bulk density (1.3-1.4t/m3) than water-cooled granulated slag (1.0-1.1t/m3). All blast furnace dry slag granulation technologies must cope with surges in slag volumes and ...

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Processes for the dry processing of steel slags with ...

By-products from the steel industry contain valuable contents. So this article mainly refers to approximately 200 million t/a of steel slags from converters and electric-arc furnaces worldwide, and does not discuss blast furnace slags, which have already been processed to a large extent for many years as a latent hydraulic composite material in the building materials industry. In addition to ...

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CFD modelling of dry slag granulation using a novel ...

Keywords: dry granulation, slag, spinning disc, CFD, modelling, simulation Slags generated in metallurgical industry are high volume by-products or wastes containing a large amount of heat. In blast furnace ironmaking, for example, for every tonne of hot metal produced, about 300 kg of slag is generated. The cooling of molten slag to ambient

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Granulation and Heat Recovery from Metallurgical Slags ...

09/12/2019  Dry granulation requires far less cooling water, it is more compact and allows recovery of waste heat/energy from the molten slag. Dry granulation also avoids the emission of H 2 S and SO 2 with steam. The dry slag atomisation by air blasting has been commercialised in recent years and provides some attractive features.

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(PDF) Heat Recovery from Slag through Dry Granulation

Dry granulation is an environmentally-friendly treatment, and the performance of dry granulation slag cement is investigated in the study. The results demonstrated that the particle size ...

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Application technology of calcium carbide slag: a case ...

Since 2007, new dry process production lines with calcium carbide slag have developed rapidly, including at the Xinjiang Tianye cement plant, Inner Mongolia, the Yili Jidong cement plant, the Yili Qingsong Nangang cement plant, Jinni Group’s new dry-process cement second plant, etc., mostly at the 2500 t/d or 3000 t/d production scale. At present, 4600 t/d or 5000 t/d cement clinker ...

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Slag - Wikipedia

Slag is the Limestone-like by-product left over after a desired metal has been separated (i.e., smelted) from its raw ore. Slag is usually a mixture of metal oxides and silicon dioxide. However, slags can contain metal sulfides and elemental metals. While slags are generally used to remove waste in metal smelting, they can also serve other purposes, such as assisting in the temperature control of ...

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Ash and Slag Conveyors - Loibl Förderanlagen GmbH

Slag handling is made by a hydraulically actuated pusher, which pushes the bottom ash out of the water bash and reduces the moisture content at the same time. For the dry ash removal Loibl builds high-temperature resistant ash removal systems. The LASH DRYPRON ® is a patented dry deslagger by Loibl, designed as a rugged apron belt deslagger.

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DRY SLAG GRANULATION WITH HEAT RECOVERY*

same criteria as wet-granulated slag for use in the cement industry. Phase 1 of the project has now been completed where a technical plant was set up at the University of Leoben in 2012. A series of dry-slag granulation campaigns were carried out using remelted blast furnace slag. The elevated offgas temperatures and the quality of the slag product as verified by the FEhS Building Material ...

Get Price

CFD modelling of dry slag granulation using a novel ...

Keywords: dry granulation, slag, spinning disc, CFD, modelling, simulation Slags generated in metallurgical industry are high volume by-products or wastes containing a large amount of heat. In blast furnace ironmaking, for example, for every tonne of hot metal produced, about 300 kg of slag is generated. The cooling of molten slag to ambient

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CSIRO Research Publications Repository - Dry slag ...

27/06/2011  CSIRO has been working on the dry granulation process since 2002 and has made major breakthroughs in novel process design. The work has recently been extended to include heat recovery from the slag, in collaboration with industrial sponsors (BlueScope Steel and OneSteel as part of the Australian Steel Industry CO2 Breakthrough Program). A pilot ...

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

22/02/2019  In 2008, a prototype dry slag granulator (DSG) with a spinning disc up to 70 mm in diameter and a 1.2-m-diameter granulator was designed and constructed to prove the concept at CSIRO in Melbourne. This could operate with slag tapping rates up to 10 kg/min. Considerable efforts were directed towards resolving operational issues relating to the movement and fast cooling of granules

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DRY SLAG GRANULATION WITH HEAT RECOVERY Semantic

The resultant pelletised slag fulfils the same criteria as wet-granulated slag for use in the cement industry. Phase 1 of the project has now been completed where a technical plant was set up at the University of Leoben in 2012. A series of dry-slag granulation campaigns were carried out using remelted blast furnace slag. The elevated offgas temperatures and the quality of the slag product as ...

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Videos - Recent developments in Ecomaister-Hatch dry slag ...

Recent developments in Ecomaister-Hatch dry slag atomisation, Janice Bolen, Hatch. Presentation given at the Global Slag Conference 2017 on 18 - 19 May 2017. Related Videos . New cements with granulated blastfurnace slag: From laboratory tests to standardisation . Metallurgical conversion of EAF slag to a beneficial material for cement industry . Slag grinding case study: Producing slag ...

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Slag - Wikipedia

Slag is the Limestone-like by-product left over after a desired metal has been separated (i.e., smelted) from its raw ore. Slag is usually a mixture of metal oxides and silicon dioxide. However, slags can contain metal sulfides and elemental metals. While slags are generally used to remove waste in metal smelting, they can also serve other purposes, such as assisting in the temperature control of ...

Get Price

Blast Furnace Ironmaking – A View on Future Developments ...

01/01/2017  At the same time, the slag product should also fulfill the same criteria as wet-granulated slag for use in the cement industry. The project was officially launched on September 1, 2011. A technical plant was set up at the University of Leoben in Austria where in the summer of 2012 through 2013, a series of dry slag granulation campaigns were carried out using re-melted blast furnace slag.

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Slag recycling - recovery

The fields of application of the air-cooled slag are mainly in road construction and other uses in the construction industry. 4 Trends in slag recycling. The three most important trends for slag recycling relate to further investments in granulation plants for blast furnace slag, the increase in slag trading with separate slag grinding plants and the increasing use of steelworks slag as an ...

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How to Control Pollution in Iron and Steel Industry?

There are many pollution problems faced by the steel industry and are not confined to any one processing stage. As the size of the industry is large, pollution control is a costly proposition. Major pollution sources and types in iron and steel industry are presented. How to Control Air Pollution in Iron and Steel Industry: There are emissions to the atmosphere in the form of dust, fume and ...

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DRY SOLIDIFICATION WITH HEAT RECOVERY OF

DRY SOLIDIFICATION WITH HEAT RECOVERY OF FERROUS SLAG Heribert MOTZ1, Andreas EHRENBERG2, Dirk ... applications is an important focus of the steel industry. The slag production processes and the properties of the by-products itself have to be stable in the future to ensure their sustainable use. The treatment and alternative solidification of liquid slag can lead to interesting new

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

22/02/2019  In 2008, a prototype dry slag granulator (DSG) with a spinning disc up to 70 mm in diameter and a 1.2-m-diameter granulator was designed and constructed to prove the concept at CSIRO in Melbourne. This could operate with slag tapping rates up to 10 kg/min. Considerable efforts were directed towards resolving operational issues relating to the movement and fast cooling of granules

Get Price

DRY SLAG GRANULATION WITH HEAT RECOVERY Semantic

The resultant pelletised slag fulfils the same criteria as wet-granulated slag for use in the cement industry. Phase 1 of the project has now been completed where a technical plant was set up at the University of Leoben in 2012. A series of dry-slag granulation campaigns were carried out using remelted blast furnace slag. The elevated offgas temperatures and the quality of the slag product as ...

Get Price

Dry Slag Granulation with Waste Heat Recovery

09/08/2016  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. Video - Integrated DSG Heat Recovery Process Proof-of

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Videos - Recent developments in Ecomaister-Hatch dry slag ...

Recent developments in Ecomaister-Hatch dry slag atomisation, Janice Bolen, Hatch. Presentation given at the Global Slag Conference 2017 on 18 - 19 May 2017. Related Videos . New cements with granulated blastfurnace slag: From laboratory tests to standardisation . Metallurgical conversion of EAF slag to a beneficial material for cement industry . Slag grinding case study: Producing slag ...

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energy innovation austria, Issue 1/2018

Dry slag granulation pilot facility at voestalpine blast furnace, photo: Primetals Technologies Austrian industry is very productive and makes a substantial contribution to value creation and employment. Energy and raw-material-intensive sectors play an important part here. In collaboration with research organizations Austrian firms are constantly developing path-breaking technologies and ...

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Slag recycling - recovery

The fields of application of the air-cooled slag are mainly in road construction and other uses in the construction industry. 4 Trends in slag recycling. The three most important trends for slag recycling relate to further investments in granulation plants for blast furnace slag, the increase in slag trading with separate slag grinding plants and the increasing use of steelworks slag as an ...

Get Price

Refractories Market Share Research 2019-2025 : Industry ...

Depending upon on slag they are segmented into acidic, basic and neutral refractories. The manufacturing process for refractories include dry press process, unformed, fused cast, formed, hand molded. They have a wide ranging application in iron steel industry, non-metallic materials such as Limestone, cement, lime and ceramics, solar panels, etc. They are also utilized in production of non ...

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Fly ash - Wikipedia

Fly ash or flue ash, also known as pulverised fuel ash in the United Kingdom, or coal combustion residuals (CCRs), is a coal combustion product that is composed of the particulates (fine particles of burned fuel) that are driven out of coal-fired boilers together with the flue gases.Ash that falls to the bottom of the boiler's combustion chamber (commonly called a firebox) is called bottom ash.

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How to Control Pollution in Iron and Steel Industry?

There are many pollution problems faced by the steel industry and are not confined to any one processing stage. As the size of the industry is large, pollution control is a costly proposition. Major pollution sources and types in iron and steel industry are presented. How to Control Air Pollution in Iron and Steel Industry: There are emissions to the atmosphere in the form of dust, fume and ...

Get Price