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blast furnace slag granulation process

New process for dry granulation and heat recovery from ,, New process for dry granulation and heat recovery from molten blast-furnace slag Author PICKERING, SJ; HAY, N; ROYLANCE, TF; THOMAS, GH British Steel Corp Source Ironmaking & ,Optimization for blast furnace slag dry cooling ,, Since the large accumulation amount of blast furnace slag (BFS) with recycling value, it has become a hot topic for recovery utilization Compared with the existing various BFS granulation process, the dry granulation process can promote the use of blast furnace granulated slag as cement substitute and concrete admixtur Our research group developed a novel dry cooling granulation experiment ,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 metalWelcome to Evotech, The process of slag granulation involves pouring the molten slag through a high pressure water spray in a granulation head, located in close proximity to the blast furnace Granulation process is the controlled quenching of the slag in cold water which does not give time for crystalline growth to ,Slag Granulation with Continuous Dewatering Ironmaking, of granulation tanks and/or INBA dewatering drums adapted to your furnace design and requirements Blowing Box Jet Slag Granulation Area: Granulation Tank & Blowing Box The slag granulation area links the hot slag runner of the blast furnace and the INBA dewatering system This link is directly accomplished through the use of a granulation tank.

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Some Fundamental Aspects of Dry Slag Granulation Process, granulation process and the dynamics of slag droplet collision with solid surfaces will be covered Published studies on the thermodynamics of sulphur in slags and kinetics of sulphur transfer between blast the furnace slags and oxidising gas mixtures have been reviewed to ascertain the effects of oxygen ial pressure on partchinese technology for blast furnace slag granulation process, Blast furnace slag present invention dry granulation and heat recovery , furnace slag and waste heat recovery process translated from Chinese , particles, and then using the remaining heat recovery technology methodsBlast Furnace Slag Granulation / Ironmaking / Our ,, Slag handling is an important aspect of modern blast furnace operation Today, blast furnace slag is a saleable product (granulated slag sand used as CO 2-friendly substitute of clinker in cement production) rather than a difficult and costly waste materialPaul Wurth has developed the INBA ® slag granulation process, incorporating our proprietary dynamic INBA dewatering drumCeramic lined ground granulated blast furnace slag components, The main objective of the slag granulation plant is to process liquid blast furnace slag into valuable raw materials for the cement and construction industri The value of the slag depends on its characteristics such as mineralogical, chemical, physical and mechanical properties, glass content, structure and moisture contentOptimum Blast Furnace Slag Composition for Hot Metal ,, Wet granulation, slag pelletizing and dry slag atomization technologies were compared to better understand the flexibility that each process has to treat a range of blast furnace compositions and produce by-product slag suitable for sale.

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Process for granulation of slag, Feb 22, 1983· The granulation of molten material, blast furnace slag for example, is accomplished by wetting the slag with a stream of water and thereafter transporting the thus formed granules away from the point of granulation with the water streamCrystallization Behaviors of Blast Furnace (BF) Slag in a ,, Blast furnace (BF) slag is the principal byproduct formed during the iron-making process, which generates a considerable amount of thermal energy However, to simultaneously recover the maximum amount of residual heat and obtain vitreous slag using a low conduction coefficient of air is a primary challenge of the dry granulation technique, which has not been solved by either fundamental ,US4374645A, The granulation of molten material, blast furnace slag for example, is accomplished by wetting the slag with a stream of water and thereafter transporting the thus formed granules away from the point of granulation with the water stream Water consumption is minimized and average grain size increased by employing a multi-layer water stream defined by currents having different temperatures and ,Energy Nsumtion By Grinding Of Blast Furnace Slag, The Ground Granulated Blast Furnace Slag (GGBS) is obtained by grinding blast furnace slag in water or steam This process leads to a glassy, granular product that is then dried and ground into a fine powder GGBS offers a more sustainable concrete having higher compressive strength, reduced permeability and resistance to chloride and sulphate ,Dry Granulation of Blast Furnace Slag for Energy Recovery ,, Aug 09, 2014· Sumitomo Metals Industries is developing a dry granulation process for blast furnace slag where a stream of slag breaks up as it impinges on to a rotating drum The slag particles then fall into fluidized bed where the heat is recovered This process aims to produce a particulate slag to substitute for river sand as well as to recover about 55 ,.

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(PDF) A Review of Granulation Process for Blast Furnace Slag, Oct 24, 2020· Yu, et al [188] reviewed the granulation process for blast furnace slag They reported that for every pig iron production accompanied by 03-06 tons of blast furnace slag produced with the ,RECOMMENDED GUIDELINE FOR IRON & STEEL SECTOR ,, The blast furnace gas (BFG) generated in the BF is cleaned through a series of steps before transporting it to the BFG Holder 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 highDRY SLAG GRANULATION WITH HEAT RECOVERY*, Therefore approximately 80% of blast furnace slag sand is used as cement additive and realises valuable revenue rather than being disposed of as land-fill 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 ofProcessing of Granulated Blast Furnace Slag and its ,, The most common process for granulating blast furnace slag involves the use of high water volume, high pressure water jets in direct contact with the molten blast furnace slag at a ratio of approximately 10 to 1 by mass The molten blast furnace slag is quenched almost immediately to form a material generally smaller than a #4 sieveModeling on Dry Centrifugal Granulation Process of Molten ,, granulation process are analyzed and optimum parameters are obtained The results show that the granu-lation can be greatly improved by increasing the rotating speed of the disc and by reducing the molten slag viscosity properly KEY WORDS: blast furnace slag; dry centrifugal granulation; physical and mathematical model; rotary disc.

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IBMD, The process of slag granulation involves pouring the molten slag through a high-pressure water spray in a granulation head, located in close proximity to the blast furnace Granulation process is the controlled quenching of the slag in cold water which does not give time for crystalline growth to ,THE DRY BLAST, The dry process in the case of blast furnace, produces a cement grade granulate of equal quality to that produced by the wet process Hence it has increased value due to reduced energy requirements in subsequent processing So the dry blast-furnace slag granulation arrangement application can dissolve such problems: the dry even sizedWhat is Slag? | Australian Steel Mill Services, Blast Furnace Slag can be processed into another form by Granulation This process introduces the molten slag to water and creates an amorphous granular product which is typically minus 3mm This product is marketed to the cement industry by ASMS as a cementitious material Granulated blast furnace slag has product codes commencing with 'GBF'Dry Granulation of Blast Furnace Slag, 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 Heat is recovered from the slag in the following ways As the spray of slag particles moves outwards from the atomizer, heat is lost by radiation to the vessel and by convection to the air moving through ,Slag, As the slag is channeled out of the furnace, water is poured over it This rapid cooling, often from a temperature of around 2,600 °F (1,430 °C), is the start of the granulating process This process causes several chemical reactions to take place within the slag, and gives the material its ,.

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US3941585A, A process for cooling sulfur-bearing slag while inhibiting the formation of hydrogen sulfide An oxidant is mixed with the cooling water and the slag is brought into contact therewith, the solution cooling the slag to permit handling thereof while the oxidant inhibits the release of hydrogen sulfideGranulated Blast Furnace Slag (GBS), May 06, 2016· DescriptionHeat recovery in dry granulation of molten blast furnace slag, @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 discharged from ,Design and Operation of Dry Slag Granulation Pilot Plant ,, Feb 22, 2019· CSIRO has been working on a dry granulation process, integrated with heat recovery, since 2002 It involves a rotary disc that atomizes molten slag to produce liquid droplets, which are rapidly quenched to become solid granul The hot granules are fed to a counter-current moving packed bed heat exchanger, where they are further cooled and finally discharged at close to ambient ,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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