14th Global Slag Conference, Exhibition & Awards 2019 26 - 27 March 2019 Aachen, Germany. View the conference photo gallery here. The 14th Global Slag Conference has successfully taken place in Aachen, Germany, with 140 delegates from 36 countries in attendance. The 15th Global Slag Conference will take place in Vienna in …
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After granulation process is determined, the granulation water system will be defined, it has three types: granulation water is directly used in slag granulation, granulation water is cooled by ...
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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 ...
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The physical and mathematical model of molten converter slag particle has been established in this paper. The laws of solidification and heat transfer of molten converter slag particles with the diameter of 2 mm in the process of air quenching granulation at different air velocity have been simulated by FLUENT, which the …
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To recover heat of the viscous slag chemically, the strongly endothermic reaction CH 4 +H 2 O →3H 2 +CO was selected and then the property of dry granulation of the molten slag by Rotary Cup Atomizer (RCA) for expanding surface area of the slag was experimentally studied. The purpose of this paper was, therefore, to study slag …
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EAF Slag 168.6 EAF D&S*, 12.8 0 50 100 … liquid metal from outside oxygen and maintain temperature … recovery rate for slag varies from over 80% for steelmaking slag slag processing service in europe – mining equipments …
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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 …
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Centrifugal granulation method is the optimum process, with smaller slag particle size (about 2mm), higher glassy phase and recovery rate. The process capacity and the …
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Here we review common slag handling practices, the developments in dry slag granulation over the last three decades, introduce the Ecomaister-Hatch dry slag …
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Molten slag is often considered as a waste material when it is cast into slag pits. INBA slag granulation and dewatering system is the proven route for converting molten slag into a …
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DOI: 10.1016/j.applthermaleng.2020.116295 Corpus ID: 228883896; Experimental investigation on granulation characteristics and waste heat recovery of molten slag in gas quenching dry granulation technique
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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 ...
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A new technological approach to the granulation of slag, 03-11-2021· During granulation, due to rapid cooling (quenching), the slag solidifies in a glassy (amorphous) state and the latent heat of crystallization (300–400 kJ/kg) is not released and is realized in the form of chemical energy, giving the slag a valuable quality – hydraulic activity.further processing …
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Global cement production accounts for about five per cent of man-made CO2 emissions (WBCSD, 2002). Such operating practices will increasingly be considered unsustainable, unless significant reductions in environmental impact can be realised by the industry._x000D_ Slag is a high volume waste product from ironmaking, with about 300 …
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Steel slag is the waste generated in the steelmaking process and includes ferric oxide and the impurities of some infusible matters. It is the by-product when slag-forming constituents (such as fluorite, lime, and deoxidant) are added for deoxidization, desulfurization, and dephosphorization in steelmaking.
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The type of process selection requires thorough knowledge of physicochemical properties of the drug, excipients, required flow and release properties, etc. Granulation technologies like roller compaction, spray drying, supercritical fluid, low/high shear mixing, fluid bed granulation, extrusion/spheronization, etc. have been …
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In the blast-furnace production, fiery-liquid slags have temperatures of about 1400–1500 °C at the exit from the furnace. For the utilization of their sensible heat, the world leading countries develop special installations for slag dry granulation aimed at getting dry granulated slags and using the heat of liquid slags for the purposes of …
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The concrete blocks were crushed into pieces of 2–16 mm using a jaw crusher. The pieces were then sieved, and those smaller than 4.75 mm were dried in an oven at 100 °C for 24 h. ... Jiang & Ling (2020) investigated the granulation and carbonation of steel slags and observed that carbonation leads lower porosity in the …
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Grinding options for slag and pozzolan While the use of supplementary cementitious materials is increasingly popular, the use of granulated blastfurnace slag and pozzolans …
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The air granulation of BOF slag provides a promising way to recover heat from the slag that has a tapping temperature between 1250 ... as shown in Fig. 2 (a) and, with the help of a jaw crusher model BB2 (Retsch), reduced to sand size. After crushing, the CSS was also sieved between 0.25 and 8 mm to achieve the same particle size …
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One of the key measures for a sustainable metallurgical industry is to convert high volume slag waste into valued products. Dry granulation of slags using a rotary disc[1-6] is an …
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FERROCHROMIUM SLAGS Pekka Niemelä and Mauri Kauppi Outokumpu Tornio Works, Tornio, Finland E-mail: pekka.niemela@outokumpu; mauri.kauppi@Outokumpu ... Figure 5: Slag granulation process Water from smelting furnace scrubbers Slag 1650-1700°C 1.2 t/(t FeCr) To circulation > 90 % Effluent Settling ponds 30-35 m3/(t /(t …
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Drum-granulation process is a new process for molten steel slag granulation. It is an improved version of the HK process, which was originally used for BF slag granulation [].A kind of heat resistant alloy steel was used as material of the drum, and the cooling ability for the drum was enhanced in order to fit the high temperature of …
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Dry granulation of slags using a rotary disc[1-6] is an emerging technology, which was developed and proposed in the 1980s as an attractive alternative to the conventional water quenching.
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Slag dumping and water granulation are the most commonly used slag treatment methods in the metallurgical industries. In both processes, water is present (by desire for cooling and dispersion or as a result of rain accumulation) and thus equipment …
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The main challenge of the steel industry for the next decade is the steel production transformation process, starting in Europe. The CO 2 intensive blast furnace/basic oxygen furnace (BOF) route will be substituted by a combination of Direct Reduced Iron (DRI), based on natural gas, later on "green" hydrogen, with an Electric Arc Furnace (EAF) or a …
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vi-ronmentally friendly concrete block substitute that use no natural aggregate (sand and gravel). Instead, this product utilizes a fine powder of granulated blast furnace slag, as …
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The technological factors required to improve the operational properties of granulated metallurgical slags demanded in the building industry have been analyzed. …
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This method is considered to be able to establish the fastest cooling rate in the industry at present. The average cooling rate of the slag in the high-temperature section (1500–1200℃) during the air quenching process can reach 520–670℃/s. In contrast, gas quenching granulation produces slag particles less than 3 mm in size [20], [21].
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However, since slag usually contains uncrushable objects, it is typically considered a challenging feed material for conventional jaw crushers. Uncrushable objects in feed To combat the issue of uncrushable objects, ® jaw crushers can be equipped with with an optional Active Setting Control (ASC) system.
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