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Hatch helped Northam Platinum Limited achieve the first-ever dry slag granulation system for a platinum smelter. - manbetx

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Granulation and Heat Recovery from Metallurgical Slags ...

Dec 09, 2019· Fleischanderl A, Fenzl T, Neuhold R (2018) Dry slag granulation—the future way to granulate blast furnace slag. In: AISTech 2018 conference proceedings, pp 87–94. 45. Olli A (2018) Personal communication. Nov 2018. 46. Fenzl T, Neuhold R, Rummer B (2017) Installation of a dry slag granulation pilot plant at blast furnace A of Voestalpine.

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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 …

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Dry slag granulation with integrated heat recovery

Jun 27, 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. The process produces solid slag granules suitable for cement-making and hot ...

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AIST - 2018 AISTech Conference Proceedings

Currently, the slag is granulated in wet granulation plants using large volumes of water and to date it has not been possible to utilize the remnant heat energy of the molten slag, with approx. 1.7 GJ of energy per ton. Keywords: Blast Furnace, Dry Slag Granulation, Slag Sand, Heat Recovery, Cement, Carbon Footprint, CO2 reduction,Energy Efficiency

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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

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Forging a future in green steelmaking - CSIRO

Mar 16, 2015· 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 into small granules. [Image changes to show molten slag being atomised and …

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AIST - 2014 AISTech Conference Proceedings

Dry Slag Granulation With Heat Recovery. Ian J. McDonald. Download PDF. View Sample Page. Abstract: Each year approximately 400 million tons of blast furnace slag are produced worldwide. The slag, which has a tapping temperature of around 1,500°C, is normally used as a substitute for cement clinker or as an aggregate material in road ...

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Blast furnace slag obtained from dry granulation method as ...

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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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 …

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Numerical investigation of breakup process of molten blast ...

Abstract:Molten slag is broken up by supersonic air into droplets through the air quenching dry slag granulation technique. The breakup process of blast furnace slag directly determines the droplet diameter and the waste heat recovery. In order to gain deep insight into the granulation mechanism and visualize the breakup process, three ...

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

Nov 07, 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 potential for recovering 20 MW thermal energy or

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Titania-Slag - Production Process, Technology ...

Granulation of titania slag has been identified as a potential viable alternative to the conventional block route. Both wet and dry granulation of titania slag has been investigated. TiO2-rich slag is a suitable feed material for the chloride process if the ilmenite feed material is low in alkaline earth impurities.

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Experimental study of rotating dry slag granulation unit ...

Aug 25, 2016· This paper focuses on an experimental study of dry slag granulation process using an analogue for BF slag (a mixture of rosin and paraffin wax). This analogue can be used to experimentally study dry slag granulation at a relatively low temperature of 130 °C compared to BF slag at 1500 °C. Different ranges of operating conditions in terms of ...

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Wet slag granulation process

Wet slag granulation process Products. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including, Wet slag granulation process, …

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Dry Slag Granulation with Waste Heat Recovery

Aug 09, 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.

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water granulated steel slag - dekarzzabki.pl

Dry solidification with heat recovery of ... in dry slag solidification with heat recovery in the ... of granulated steel slag was smaller than ... Blast furnace …

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Some Fundamental Aspects of the Dry Slag Granulation …

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 glassy phase that is a suitable replacement for Portland cement. The combination of waste heat recovery and conversion of slag into a saleable product ...

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Development of Molten Slag Dry Granulation and Heat ...

Development of Molten Slag Dry Granulation and Heat Recovery in Steel Industry. The difficulties of molten metallurgical slag (including blast furnace slag and steel slag,etc.) heat recovery caused by low thermal conductivity and high enthalpy are analyzed.The processes of molten slag dry granulation combined heat recovery by physical means ...

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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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(PDF) Experimental study of rotating dry slag granulation ...

Experimental study of rotating dry slag granulation unit: Operating regimes, particle size analysis and scale up. Download. Related Papers. CFD simulation of free surface flow and heat transfer of liquid slag on a spinning disc for a novel dry slag granulation process. By Peter Witt.

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

However, such slag treatment methods have some obvious shortcomings: ie, no heat recovery, air pollution, and consumption of a large amount of fresh water. Therefore, there has been an increasing interest in processing molten slags without using water quenching, so-called dry slag granulation (DSG)

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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.

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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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Instantaneous measurements of granular blast furnace slag ...

Abstract An instantaneous measurement method was developed to measure the surface temperature and surface emissivity of blast furnace slag for investigating dry granulation and waste heat recovery from blast furnace slag.The system was used to measure temperature-gray scale and emissivity-temperature relationships from granular blast furnace slag images …

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Sustainability – Metix

Pilot test work has been completed on dry slag granulation where steel balls are used as medium to remove heat from the slag for up to 20% energy recovery. XPACT An automation module that has a control algorithm which is based on a mathematical model. The system calculates the ideal volumetric flow rate and negative pressure according to every ...

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(PDF) Dry slag granulation of modified BOF slag

Dry slag granulation is the key to molten slag heat recovery. In this paper, we will present our current status on BOF slag modification and dry granulation. Therefore, the …

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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 ...

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Dry Slag Granulation with Heat Recovery - ABM Proceedings

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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CN102329900B - Liquid steel slag dry-process granulating ...

The invention relates to a liquid steel slag dry-process granulating device and a sensible heat recovery method. The liquid steel slag dry-process granulating device comprises a feeding device, a dry-process granulator, a cyclone separator and a sensible heat recovery device, wherein the dry-process granulator, the cyclone separator and the sensible heat recovery …

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