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

2018-7-27  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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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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(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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Dry Slag Granulation: A Path to Improving the Safety and ...

2016-8-23  Abstract. Slag dumping and water granulation are the most commonly used slag treatment methods in the metallurgical industries. In both processes, water is present (by desire for cooling and dispersion or as a result of rain accumulation) and thus equipment and operations are designed to minimize and mitigate the risk of steam explosions resulting from the inappropriate contact of slag with

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Application of granulated copper slag in massive concrete ...

2021-1-10  However, the internal structure of granulated copper slag (GCS) is vitreous, which has strong pozzolanic activity and can be utilized as supplementary cementitious materials (SCM),. Also, GCS possesses favorable properties such as mechanical strength and wear resistance.

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Reactivity and performance of dry granulation blast ...

2019-1-1  In the process for dry granulation, the molten blast furnace slag was poured into the rotary cup with a high rotating speed. Under the action of centrifugal force, the liquid slag releasing from the edge of rotary cup was granulated to small spherical droplets. The slag droplets are cooled and freeze in the flight [

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Granulation and Heat Recovery from Metallurgical Slags ...

2019-12-9  Granulation is the most widespread method of slag handling, employed to a number of metals as well as practically all metallurgical slags such as copper [ 17 ], ferroalloy [ 14, 18 ], and steel [ 19, 20 ], and most widely for the BF slags [ 1 ].

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

2019-2-22  The concept of dry granulation is that molten slag is atomized under centrifugal forces on a spinning disc, and the liquid droplets generated are rapidly quenched and solidified using air to produce solid slag granules suitable for use as a SCM, as per water granulation. The hot air can be recovered and used in other process operations.

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Dry Granulation of Slags - Turning Waste into Valuable ...

Dry granulation of slags using a rotary disc[1-6] is an emerging technology, which was developed and proposed in the 1980s as an attractive alternative to the conventional water quenching.

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Dry slag granulation: producing valuable by-products from ...

If you use our products to produce cement for each tonne you use you basically save 800 kilograms of CO2 emissions. Our dry slag granulation technology involves pouring molten slag from above our rig down to a spinning disc. That disc is spinning at high speed and it atomises the molten slag

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Experimental investigation on molten slag granulation for ...

2016-6-25  And copper slag was low viscosity slag, so the length of ligament is shortest in the three kinds of metallurgical slag. Meanwhile, copper slag is low surface tension slag, and a large number of small size solid particles obtained in copper slag granulation, as shown in Fig. 3(c). Download : Download high-res image (920KB)

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

2018-7-27  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 ...

Get Price

Blast furnace slag obtained from dry granulation method

2017-1-30  Blast furnace slag obtained from water quenching is generally used for cement production. However, harmful waste, such as SO 2, H 2 S and heavy metals, is discharged into the surrounding environment after water quenching. Dry granulation is an environmentally-friendly treatment, and the performance of dry granulation slag cement is investigated in the study.

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Reactivity and performance of dry granulation blast ...

2019-1-1  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 ...

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Granulation and Heat Recovery from Metallurgical Slags ...

2019-12-9  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

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Application of granulated copper slag in massive concrete ...

2021-1-10  1. Introduction. Copper slag (CS) is the by-product of the matte smelting and refining process of copper, .The major constituents of CS are Fe 2 O 3 and SiO 2, and it also contains a small amount of Al 2 O 3, CaO, and MgO, .The percentages of the main oxides of CS can be varied in the ranges as follows—Fe 2 O 3: 35–60%; SiO 2: 25–40%; CaO: 2–10%; Al 2 O 3: 3–15%; CuO: 0.3–2.1%; and ...

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Energy recovery from high temperature slags - ScienceDirect

2011-9-1  The trials for dry granulation of slag date back to 1930 , but the research surged in 1970s and 1980s in Europe and Japan, resulting in laboratory and pilot scale testing of several methods. In Section 3, the processes that have been proposed for energy recovery from slag based on the use of dry granulation are described. 2.2.

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Management of copper pyrometallurgical slags: giving ...

2004-1-18  higher absorption capacity than air-cooled copper slag. The granulated copper slag is made up of regularly shaped angular particles, mostly between 4.75 and 0.075 mm3. Slags produced during pyrometallurgical processes have been traditionally considered as a waste3. In the case of copper extraction processes, it has been estimated that for every ...

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Dry Slag Granulation with Heat Recovery - ABM

2020-4-6  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: A Path to Improving the Safety and ...

2016-8-23  Abstract. Slag dumping and water granulation are the most commonly used slag treatment methods in the metallurgical industries. In both processes, water is present (by desire for cooling and dispersion or as a result of rain accumulation) and thus equipment and operations are designed to minimize and mitigate the risk of steam explosions resulting from the inappropriate contact of slag with

Get Price

Granulation and Heat Recovery from Metallurgical Slags ...

2019-12-9  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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Northam Converter Dry Slag Granulation - Hatch Ltd

2020-10-23  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 ...

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Blast furnace slag obtained from dry granulation method

2017-1-30  Blast furnace slag obtained from water quenching is generally used for cement production. However, harmful waste, such as SO 2, H 2 S and heavy metals, is discharged into the surrounding environment after water quenching. Dry granulation is an environmentally-friendly treatment, and the performance of dry granulation slag cement is investigated in the study.

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Heat recovery in dry granulation of molten blast furnace slag

2021-8-18  @article{osti_5610662, title = {Heat recovery in dry granulation of molten blast furnace slag}, author = {Tetsuro, N and Hiroshi, N and Koichi, F and Tsukio, I}, abstractNote = {In a research and development project undertaken jointly between Ishikawajima-Harima Heavy Industries Co. and Sumitomo Metal Industries, Ltd., a process has been developed for granulating molten slag

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how dry granulation rec - aannemingsbedrijfgdevries.nl

dry granulation copper slag - , The SLAG-REC project for an innovative direct dry , The SLAG-REC® project for an innovative , dry granulation copper slag a by-product from the electric furnace . Cold Recycle Fluid Bed Granulation. K Monstrey of Green Granulation Technology introduces a novel urea granulation , fan can help to dry out the , all ...

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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

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Stabilization of Stainless Steel Slag via Air Granulation ...

2019-2-8  Dry granulation methods can be divided into three main areas: (1) mechanical granulation [11, 16], (2) centrifugal granulation [12, 16,17,18,19,20,21], and (3) air granulation. In mechanical dry granulation, molten slag is broken up and quenched via mechanical means such as rotating drums, blades, or shot materials. An example is the Paul Wurth ...

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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 ...

Get Price