· Metallurgical Research & Technology, an international journal for steel and other metals: from making to using 1 College of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063210, Hebei, PR China 2 China Metallurgical Industry Planning and Research Institute, Beijing 100013, PR China
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· The first pilot plant was claimed to operate at a slag tapping rate of 100 kg/min in a ϕ3m granulation chamber, which is 10 times higher than its prototype (Xie et al., 2010;Barati and Jahanshahi
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· Steel slag mainly refers to the blast furnace slag and converter slag produced in the process of iron making and steel making, and with the increase of steel production, the amount of steel slag produced increases simultaneously. In 2017, the metallurgical slag output of iron and steel enterprises in China reached more than 440
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9th Int. Conference on Molten Slags, Fluxes and Salts (MOLTEN12), May 2012, Beijing, China Some Fundamental Aspects of the Dry Slag Granulation Process Sharif Jahanshahi*, Yuhua Pan and Dongsheng
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· Nomenclature d number average particle diameter, m R radius of the disc, m Q volumetric flowrate of liquid, m 3 s −1 ω angular velocity of the rotating disc, rad s −1 μ viscosity of liquid, Pa s ρ density of liquid, kg m −3 σ surface tension of liquid, N m −1 Re
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· Sep 2013. Yi Min. Jian Huang. Cheng Jun Liu. Xue-qing YU. Request PDF | Simulation experimental research of granulation process for iron slag | Liquid paraffin instead of molten slag was broken by
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A blast furnace (BF) is a closed system into which iron-bearing materials (iron ore lump, sinter and/or pellets), fluxes (slag formers) and reducing agents (i.e. coke) are continuously fed from the top of the furnace shaft through a charging system. The products of reduction process which takes place inside the BF are hot metal (HM) and liquid
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Danieli Corus condensing tower technology has a proven track record in both the steel and the aluminium industry. Dewatering is required to lower the moisture content to around 15%. Many dewatering systems have
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CFD modelling of dry slag granulation using a novel spinning disc process. Slags generated in metallurgical industry are high volume by-products or wastes containing a large amount of heat. In blast furnace ironmaking, for example, for every tonne of hot metal produced, about 300 kg of slag is generated. The cooling of molten slag to ambient
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· Slags are byproducts of the metallurgical industry. It is of importance to recycle materials and recover heat from metallurgical slags to reduce the energy consumption and environmental impact of steel industry. China is the largest iron- and steelmaking slag producer in the world, and intensive efforts have been made during last
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Slag droplets with high velocities on collision with inclined surfaces generally exhibit a process of falling → contacting → spreading → recoiling → bouncing → rolling or tumbling, as shown in Figure 5. (a) Time = -9 ms (b) Time = 0 ms (c) Time = 1 ms (d) Time = 3 ms Falling Colliding Spreading Spreading.
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9th Int. Conference on Molten Slags, Fluxes and Salts (MOLTEN12), May 2012, Beijing, China Some Fundamental Aspects of the Dry Slag Granulation Process 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
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· In this study, four steelmaking slags with different compositions, shown in Table 1, were used to investigate the effect of composition on the granulation process. Initial compositions of slags mainly consisted of CaO, iron oxides (FeO and Fe 2 O 3 ), SiO 2, and a small amount of P 2 O 5 and Al 2 O 3. Slag A has the highest basicity (CaO/SiO 2
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The RecHeat was designed and modelled iteratively to achieve an optimised heat recovery apparatus. The model shows that the temperature of different sections of the heat exchanger part varies from 170 to 380 °C after slag pouring while the average air temperature at the entrance of the heat exchanger is less than 150 °C.
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1. Current status and future direction of CSIRO’s dry slag granulation process with waste heat recovery. Sharif Jahanshahi and Dongsheng Xie CSIRO, Box 312, Clayton South, VIC 3168, Australia
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· Granulation of molten metallurgical slags is a value-adding process that converts a low-value byproduct (and sometimes waste) into a saleable product with multiple uses by the building and construction industries. In particular, when ironmaking slag is granulated and is substituted for Portland Cement, the environmental and economic
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· 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 granules. The hot granules are fed to a counter-current moving packed bed heat exchanger, where they are further
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Operating conditions for fiber and particle formation are determined. Effect of liquid flowrate, rpm and disc diameter on particle diameter is studied. The particle size followed a lognormal distribution. Dimensionless correlation for particle size
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· In stainless steel production, slag from argon oxygen decarburization (AOD) converters is dumped on to the ground and then slowly cooled. The slag undergoes phase transformation from β-dicalcium silicate (β-C2S) to γ-dicalcium silicate (γ-C2S) at approximately 500 °C to 450 °C, resulting in slag volume expansion, disintegration, and
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· Request PDF | Granulation and Heat Recovery from Metallurgical Slags | Metallurgical slags are produced at a massive rate of over 750 Mt/year, and carry a thermal energy equivalent to 40 Mt/year
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PDF | On Jun 10, 2012, Terry Norgate and others published Economic and environmental evaluation of slag dry granulation | Find, read and cite all the research you need on ResearchGate
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: 69.3PDF Editor. Choose Files. or drop files here. PDFs aren't a one-way street. With our PDF Editor, you can edit text in your PDFs and add images, shapes, highlights, and
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Slag Granulation. Slag handling is an important aspect of modern blast furnace operation. Today, blast furnace slag is a value added product for the cement industry, using granulated slag sand as CO2-friendly substitute of clinker in cement production. Paul Wurth has developed the INBA® slag granulation process, incorporating our proprietary
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· The Net Present Value (NPV) of the dry slag granulation plant without any process credits included was A$33 M. With all potential process credits included, the NPV increased to A$56 M compared to
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· 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
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· 21053, Castellanza, Italy. The Pittini Group has a long tradition and commitment to zero waste by the reduction. and valorization of steelmaking residues. In last two years, the Pittini Group
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Slags generated in metallurgical industry are high volume by-products or wastes containing a large amount of heat. In blast furnace ironmaking, for example, for every tonne of hot metal produced, about 300 kg of slag is generated. The cooling of
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· Dry slag granulation with integrated heat recovery. July 2011. Conference: 1st International Conference on Energy Efficiency and CO2 Reduction in the Steel Industry (EECR Steel 2011) At
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· Wet Granulation. Wet granulation is the most widely used pro cess of granulation in the pharmaceutical industry. It invol ves addition of a liquid solution (with or without binder) to powders, to
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Molten slags of blast furnace is a second resources with great value of 1600~1 800 MJ sensible heat per ton. At present, water-quenching process plays a leading role in recovering waste heat of the molten slags. However, this method not only cost lots of water, but also recover little sensible heat and can pollute the surrounding environment. Dry granulation
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