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

of Liquid Slag on a Spinning Disc for a Novel Dry Slag Granulation Process", Progress in Computational Fluid Dynamics, Vol. 10, Nos. 5-6, 2010, pp. 292-299. 7. Y. Pan, P. J. Witt, B. Kuan, and D. Xie, "CFD Simulation of Slag Droplet Formation by a Spinning Disc in Dry Slag Granulation Processes", 8th International Conference on CFD

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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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GLASS-MAKING-QUALITY GRANULATED SLAG PROCESS ...

A process for forming granulated slag includes collecting a molten slag flow directly from a blast furnace in a temperature range between 2500° F. and 2600° F., quenching the molten slag flow with a flowing spray of water while the molten slag flow is still in the temperature range between 2500° F. and 2600° F. to create a granulated slag flow such that …

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Simulation experimental research of granulation process ...

Dry centrifugal granulation technology is an important mean for liquid high-temperature slag. In this paper, the numerical simulation of dry granulation process was carried out to analyze the ...

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

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 of …

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Ori Steel Slag Granulation - Fakultas Teknik Pertambangan ...

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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RECENT DEVELOPMENTS IN DRY SLAG GRANULATION: A …

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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CN103540698A - Steel slag granulating and afterheat ...

By adopting the steel slag granulating and afterheat recycling device disclosed by the invention, no new water is used in the steel slag granulation process, physical enthalpy in the steel slag can be effectively recycled in the steel slag granulation process to generate the steam, pollutant emission can be reduced as much as possible, in ...

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Modeling on Dry Centrifugal Granulation Process of Molten ...

them, slag granulation process by a centrifugal force, which is also called DCG process, has proved its advantages due to its simpleness, controllability, less energy consumption and more sensible heat recovery in the past years.5–9) In this Modeling on Dry Centrifugal Granulation Process of Molten Blast

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Granulation of titania slag

slag has a lower value. For wet granulation, it is expected that a chloride/sulphate grade split of approximately 92/8 can be attained. For the block route, it is believed that a chloride/ sulphate grade split of 85/15 can be attained. In terms of the process complexity it is believed that wet granulation of the slag will be the simpler process ...

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

Download Free PDF. Experimental study of rotating dry slag granulation unit: Operating regimes, particle size analysis and scale up. Kali Prasad. ... CFD simulation of free surface flow and heat transfer of liquid slag on a spinning disc for a …

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Valorisation Symposium

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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(PDF) Some fundamental aspects of the dry slag granulation ...

The CSIRO's Dry Slag Granulation (DSG) process is as a continuous two-step p rocess as shown in Figure 1. The. molten slag is first atomized using a …

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Further processing and granulation of slags with entrained ...

that no slag, matte, or alloy responds in similar fashion to a granulation practice. This paper addresses three issues, namely: • Water-granulation of BOF steel slag, without processing it to render it environmentally safe, physically and chemically acceptable for use by the construction industry, and the process economical

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Products › Ironmaking and steelmaking › Slag Granulation ...

In the granulation section, the liquid slag is 'quenched' by pouring onto it an excess water stream. The evaporated water will be condensed in a condensing tower located above the granulation tank. This proven granulation process ensures economic granulation and produces valuable and consistent properties in the blast furnace slag.

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Dry slag granulation with integrated heat recovery

The process produces solid slag granules suitable for cement-making and hot air of 500-600 degC as a heat source for on-site utilization. Compared with water quenching, dry granulation offers a much more sustainable approach through saving water, reducing emissions, as well as recovering waste heat to reduce energy consumption, and hence GHG ...

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Granulated Blastfurnace Slag - Euroslag

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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(PDF) Application of calorimetry and other thermal methods ...

In this study, two types of slag, A and B, generated in charcoal and coke blast furnaces, respectively, were activated with NaOH in contents of 4, …

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A Review of Granulation Process for Blast Furnace Slag

11ügranulated slag Figure 2. INBA process. 4 Dry granulation process On the blast furnace slag treatment technology, for a long time, water quenching process has token the leading position. However, there are many defects of water-quenching slag method, which can be roughly concluded as follow: a mass of sensible heat unrecovered, high

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UNDERSTANDING THE RELATIONSHIP BETWEEN PROCESS …

Fig 2.2 Steps in batch granulation process. 12 Fig 2.3 Face-centered cubic Central Composite Design and process parameters. 14 Fig 2.4: Randomized runs of FCC DoE for batch granulation and responses. 19 Fig 2.5 Granule size distributions for select runs from FCC DoE for batch granulation. ...

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CCU Technology Development at RIST

Final process scale 180 t-slag/h,unit Design Basic Conceptual Design Heat Recovery from Molten Steelmaking Slag (I) Granulation Molten Slag 2ndstage Heat recovery unit High temp. Granules Air Low temp. Granules Heat recovery ratio (%) = Recovered heat by air / Molten slag heat capacity X 100 Supply Molten slag Granulation

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

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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PRODUCTION, CHARACTERISTICS AND USE OF …

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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Application of calorimetry and other thermal methods in ...

of slag are related to the operational conditions of blast fur - nace, temperature and viscosity of molten slag, granulation process and installation, etc. [4243, ]. External factors are imposed to slag by means of handling, storage and grinding. Slag weathering results in the surface hydration, further

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Development of Continuous Steelmaking Slag Solidification ...

from blast furnace slag, the air granulation method, 8,9) rotating drum granulation method,10) and stirring granulation method11) were examined with practical scale equipment. Recently, the rotary cup atomizer method12,14) and fluidized bed direct charging method15) have also been examined. The only example of practical application of an air gran-

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SAFETY GUIDELINES FOR IRON & STEEL SECTOR BLAST …

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 the Cast House itself (sometimes separate SGP is located at a distance from the furnace proper).

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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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OBJECTIVE: SCOPE: 3. PROCESS

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 the Cast House itself (sometimes separate SGP is located at a distance from the furnace proper).

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Converting Granulated Blast Furnace Slag into Fine Aggregate

The developed conversion process involves improving the physical properties in two stages. Stage 1: Altering granulation parameters Slag Granulation is primarily affected by water temperature, water pressure and water flow rate. When the material solidifies under slow cooling conditions, escaping gases leave behind micro pores in the cooled mass.

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Energy saving from furnace slag: Study on centrifugal ...

Dry centrifugal granulation technology is an important mean for liquid high-temperature slag. In this paper, the numerical simulation of dry granulation process was carried out to analyze the stretching and splitting process of liquid filaments and study the effects of various factors on liquid filaments and granulated droplets.

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DRY SLAG GRANULATION WITH HEAT RECOVERY*

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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RECOMMENDED GUIDELINE FOR IRON & STEEL SECTOR …

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 the Cast House itself

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AIST - 2004 AISTech Conference Proceedings

PR-342-180 - 2004 AISTech Conference Proceedings INBA Slag Granulation System Environmental Process Control. P. Leyser and C. Cortina. Download PDF

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(PDF) Slag granulation systems for blast furnaces

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 …

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

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

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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