slag granulation process pdf

slag granulation process pdf

(PDF) A Review of Granulation Process for Blast Furnace Slag

2021-10-8 · PDF | Molten slags of blast furnace is a second resources with great value of 1600~1 800 MJ sensible heat per ton. ... the introduction of the process

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Ori Steel Slag Granulation - fttm.itb.ac.id

2019-5-22 · In order to simulate the process of steel slag granulation, a set of equipment was made as shown in Figure 1. This consists mainly of launder, granulation tank, dewatering tank, waste water tank and fresh water tank. Solid steel slag obtained from PT. Krakatau Steel was melted in an induction furnace at 161DOe and then transferred and poured into

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Some Fundamental Aspects of Dry Slag Granulation

2014-7-8 · 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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Slag Granulation with Continuous Dewatering Ironmaking

2021-6-16 · second granulation tank, one granulation unit can handle the slag of two tap holes. `Continuous filtering and evacuation of dewatered slag sand up to its storage facility without inter-ruptions for purging. ` High reliability. `Measurement of slag flow, due to the design of the drum and the dewatering process.

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

2018-7-27 · The wet granulation process operates with a high water to slag ratio of about 8:1. The advantage of the wet process is that it is accepting wide fluctuations in the mass flow and physical/chemical properties of the slag. However, the wet

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Further processing and granulation of slags with

2011-3-3 · General slag granulation, on the other hand, is extensively applied, although in some cases crudely, with disastrous effects, as a result of not recognising the high heat capacities prevalent in slags. Thus, purpose-designed granulation and solidification processes are discussed, taking

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(PDF) Slag granulation systems for blast furnaces

2022-2-4 · Slag Granulation Systems for Blast Furnaces Page 9 of 12 B-2-033. Figure 8 Hot wate r granulation system at a 7500 thm/d fu rnace. The stack needs to be sufficiently high to

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Granulated Blastfurnace Slag - Euroslag

2019-1-25 · blast-furnace slag cement containing 50 wt.-% GGBS gen-erates only 0.54 t CO 2. These data include emissions from the calcination process, the fossil fuel burning, and the use of electricity. For some countries maybe the potential saving is much more higher. Thus the use of slag is a very effective and economic

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PRODUCTION, CHARACTERISTICS AND USE OF

2015-5-22 · The ferrochrome slag products are quality assured and CE mark ed according to the stand-ards EN 13242 and EN 13043 [3,4]. The main requirements for CE marking are the aggregate size and size distribution, resistance to fragmentation, durability against studded tyres and durability against freeze/thaw. Figure 5: Slag granulation process Water from

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Development of Continuous Steelmaking Slag

ering sensible heat from steelmaking slag is being developed as one theme of COURSE50. A twin roll type continuous slag solidification process to obtain a shape suitable for sensible heat recovery was investigated. Sheet-like slag was shaped to a thickness of about 7 mm in a twin roll pilot-scale experiment. The slag

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Further processing and granulation of slags with

2011-3-3 · General slag granulation, on the other hand, is extensively applied, although in some cases crudely, with disastrous effects, as a result of not recognising the high heat capacities prevalent in slags. Thus, purpose-designed granulation and solidification processes are discussed, taking

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DRY SLAG GRANULATION WITH HEAT RECOVERY*

2020-4-6 · The wet granulation process operates with a high water to slag ratio of about 8:1. This wet process is quite accepting to fluctuations in the quantity and properties of the slag, however the wet process has the following drawbacks: • Despite mechanical dewatering in drums, silos or heaps, a residual moisture of

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Feasibility of Rotary Cup Atomizer for Slag Granulation

1673 to 1823K in a slag temperature, 10g/s in a slag charging rate and 0.018kg/s in an air mass flowrate. After slag was granulated for a couple of minutes, the distribution of slag size in each zone of the receiver; 0 to 0.3, 0.3 to 0.4, 0.4 to 0.5, and 0.5 to 0.6m in a distance from the center of the cup, was collected.

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DRY SOLIDIFICATION WITH HEAT RECOVERY OF

2013-4-9 · The conventional water granulation process has to ensure that the complete stream of slag is dispersed into fine particles and also that it is rapidly cooled to below the transformation threshold (approx. 840°C).4 This cooling leads to such a quick increase in slag viscosity that the formation of a crystalline structure is prevented and a glass

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PRODUCTION, CHARACTERISTICS AND USE OF

2015-5-22 · The ferrochrome slag products are quality assured and CE mark ed according to the stand-ards EN 13242 and EN 13043 [3,4]. The main requirements for CE marking are the aggregate size and size distribution, resistance to fragmentation, durability against studded tyres and durability against freeze/thaw. Figure 5: Slag granulation process Water from

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Granulation and Heat Recovery from Metallurgical Slags ...

2019-12-9 · Metallurgical slags are produced at a massive rate of over 750 Mt/year, and carry a thermal energy equivalent to 40 Mt/year of coal. The potential mineral and thermal energy values of slags are in the order of $22 b and $3–6 b per year. Such attractive figures, together with tightening legislation on disposal of slag and the carbon footprint associated with the loss of

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PDF

2019-9-30 · PDF Abstract Abstract: Liquid film formation is an important part of the air quenching dry slag granulation process and the granulation effect of slag depends on the film flow characteristics. To investigate the flow behavior of slag and the effects of different ...

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Granulated Blastfurnace Slag - Euroslag

2019-1-25 · blast-furnace slag cement containing 50 wt.-% GGBS gen-erates only 0.54 t CO 2. These data include emissions from the calcination process, the fossil fuel burning, and the use of electricity. For some countries maybe the potential saving is much more higher. Thus the use of slag is a very effective and economic

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Process for granulation of slag - Paul Wurth S.A.

The average size of granules of slag produced in the above-described method is known to be partly a direct function of the temperature of the water with which the molten slag is mixed. Thus, the average size of the slag particles formed during the granulation process will increase with an increase in the temperature of the granulation water.

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The smelting operations of Anglo American’s platinum ...

2011-3-3 · Figure 2: Schematic of process flow at Waterval Smelter (after Jacobs2) The furnace matte from all the smelters is then fed to the Anglo Platinum Converting Process (ACP) where the matte is upgraded through removal of the ... greater volumes of slag and the current granulation circuit will be upgraded to cater for this.

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DRY SLAG GRANULATION WITH HEAT RECOVERY*

2020-4-6 · The wet granulation process operates with a high water to slag ratio of about 8:1. This wet process is quite accepting to fluctuations in the quantity and properties of the slag, however the wet process has the following drawbacks: • Despite mechanical dewatering in drums, silos or heaps, a residual moisture of

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A new technological approach to the granulation of slag ...

2021-11-3 · Among numerous methods of granulation of slag melts, the most progressive and cost-effective are considered the technologies wet granulation from VNIIMT (Scien-tific-Research Institute of Metallurgical Heat Engineering, Russia) and Paul Wurth technologies - INBA process (SMS Group, Luxemburg) [15, 16]. According to research

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RECENT DEVELOPMENTS IN DRY SLAG GRANULATION:

2020-4-7 · slag hauling and production of higher value by-product. Wet granulation allows for fast quenching of molten slag and production of high value glassy material, which, for BF slag, demonstrates desirable cementitious properties post milling. BF slag is typically devoid of metal, making water granulation a manageable process from a safety perspective.

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DRY SOLIDIFICATION WITH HEAT RECOVERY OF

2013-4-9 · The conventional water granulation process has to ensure that the complete stream of slag is dispersed into fine particles and also that it is rapidly cooled to below the transformation threshold (approx. 840°C).4 This cooling leads to such a quick increase in slag viscosity that the formation of a crystalline structure is prevented and a glass

Read More

Granulated Blastfurnace Slag - Euroslag

2019-1-25 · blast-furnace slag cement containing 50 wt.-% GGBS gen-erates only 0.54 t CO 2. These data include emissions from the calcination process, the fossil fuel burning, and the use of electricity. For some countries maybe the potential saving is much more higher. Thus the use of slag is a very effective and economic

Read More

RESEARCH OVERVIEW ON RECOVERY OF WASTE HEAT

2020-2-27 · waste heat recovery process of liquid slag into dry centrifugal granulation process and waste heat recovery process. After dry centrifugal granulation, the temperature of blast furnace slag particles was about 900°C. Then the particles entered the packed bed for heat transfer, resulting in hot air of 500-600°C [5].

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RECOMMENDED GUIDELINE FOR IRON & STEEL SECTOR

2019-9-19 · vi) Slag Granulation Plant (SGP) / Slag Dumping Yard: During the process of iron making, the impurities are fluxed and removed as slag. The hot liquid slag is made into slag granules by means of high pressure water jets in the Slag Granulation Plant in

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HEAT RECOVERY FROM BLAST FURNACE SLAG

2018-6-26 · ~400 mio. tons of slag (1500°C) each year The slag is generally processed to a by-product without using heat recovery (~1,8 GJ wasted energy per ton slag) Increasing demand in Energy Efficiency in Iron&Steel The main challenges is to extract the energy from the molten slag by a dry granulation process

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Valorisation Symposium

2015-5-18 · Proceedings of the Fourth International Slag Valorisation Symposium Zero Waste 15-17 April 2015 Leuven, Belgium Editors Annelies Malfliet and Yiannis Pontikes

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The smelting operations of Anglo American’s platinum ...

2011-3-3 · Figure 2: Schematic of process flow at Waterval Smelter (after Jacobs2) The furnace matte from all the smelters is then fed to the Anglo Platinum Converting Process (ACP) where the matte is upgraded through removal of the ... greater volumes of slag and the current granulation circuit will be upgraded to cater for this.

Read More