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Production of Ferroalloys. Rauf Hurman Eric, in Treatise on Process Metallurgy: Industrial Processes, 2014. 1.10.3.3.2 Silicon Content of High-Carbon Ferrochromium. The silicon content of the ferrochromium should be low as it is an undesirable element in stainless steels. Low silicon content is favored by a low operating temperature, high carbon …
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Low carbon ferrochrome slag (LCFS) is the metallurgical waste slag from the carbon ferrochrome alloy smelting process. Compared with high carbon …
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This is a method for recovering metal from high carbon ferrochrome slag, in which the large amount of remelting slag is crushed into pieces of 15 m or less, and then the metal is recovered by gravity beneficiation. First, the slag with a small amount of metal that is subjected to the magnetic separation process refers to the slag that contains ...
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Introduction. Ferrochrome slag is a waste by-products in the manufacturing ferrochrome at 1700 °C, then water quenching.When 1 t ferrochrome are produced there will generate about 1.1–1.6 t residual slags [1].The slag presents porous and hard appearance, the bulk density is 2632–2913 kg/m 3, when they are crushed to a size of …
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The slag also includes Cr and Fe oxides and calcium oxide. Common phases in the slag are glass, spinels (Al 2 O 3 –MgO) and forsterite (MgO–SiO 2) [16], [17], [18] and small amount of CaO. Aim of this work was to prepare conventional castable and low cement castables by utilizing this waste ferrochrome slag, calcined bauxite and …
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Ferrochrome slag (FCS) is a by-product of ferrochrome industries and is produced during the extraction of ferrochrome from chromite ore. The chemical …
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Ferrochrome slag (FCS) and ferrochrome ash (FCA) are by-products generated during the production of ferrochrome alloy in the ferrochrome industry. The …
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@article{Zhang2015InfluenceOB, title={Influence of burning temperature and cooling methods on strength of high carbon ferrochrome slag lightweight aggregate}, author={Shaohua Zhang and Laibao Liu and Ke Feng Tan and Lihua Zhang and Kaijing Tang}, journal={Construction and Building Materials}, year={2015}, volume={93}, …
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Raw ferrochrome slag (coarse aggregate) 0.307: 0.048: Panda et al. [20] Raw ferrochrome slag (fine aggregate) 1.238: 0.094: Concrete with ferrochrome slag coarse aggregate replacement (OPC) 0.035: 0.029: Concrete with ferrochrome slag coarse aggregate replacement (PSC) 0.020: 0.017: Concrete with …
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After being crushed to the maximum particle size under 2 mm, the slag samp les (300 g) with 50% solid. concentration were gr ound for 15, ... Low carbon ferrochrome slag (LCFS) is the ...
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This article mainly summarizes the current development of domestic and international medium-low- carbon ferrochrome and summarizes the preparation methods and the …
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Ferrochrome slag is a derivative of the manufacturing of ferrochrome, an alloy of. Figure 1: Ferrochrome slag coarse and fine aggregate. Cr (chromium) and Fe (iron) with chromium by 51 –69 per-cent of the mass and varying proportions of Fe (iron), C (carbon), and others [18 20]. In 2017, the worldwide pro-.
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Ferrochrome slag (FCS) is a by-product of ferrochrome industries and is produced during the extraction of ferrochrome from chromite ore. The chemical composition of FCS comprises of 27-33% SiO 2, 15-25% Al 2 O 3, 20-35% MgO, and 10-15% iron-chromium compounds.The high chromium content of FCS and the possibility of …
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As the result of the investigations of low-carbon ferrochrome slag the common regularities of formation of minerals of CaO-SiO2-Al2O3-MgO-Cr2O3 system in artificial stone were determined.
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After being crushed to the maximum particle size under 2 mm, the slag samples (300 g) with 50% solid concentration were ground for 15, 20 and 25 mins, respectively, by a laboratory rod mill (RK/BM
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The ferrochrome slag samples were collected from the operating plants of ferrochrome industry with submerged arc electric furnaces, situated in Kalinganagar industrial complex, Odisha, India. Air cooled slag after size reduction and alloy recovery in jigging process is available in the size range of 10–20 mm which has been used as …
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Ferrochrome slag as both coarse and fine aggregates can be used in concrete. • Ferrochrome slag aggregates enhances the mechanical properties of the …
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DOI: 10.37190/ppmp/119016 Corpus ID: 216273903; Mineralogical characterisation and separation studies on the recovery of Cr2O3 in the high carbon ferrochrome slag @article{Chang2020MineralogicalCA, title={Mineralogical characterisation and separation studies on the recovery of Cr2O3 in the high carbon …
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The mechanism involved is that the silicon and aluminium present in the high carbon ferrochrome (HCFC) slag reacts with alkali liquid, forming Geopolymer which binds other non-reactive materials in the slag. The highest strength level achieved for as-prepared Geopolymers are 11 and 15 MPa by curing 7 days and 28 days, respectively.
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Furthermore, the compressive strengths of ferrochrome slag concretes are 15.8% and 3.6% higher than conventional concrete, and the water absorption of ferrochrome slag low-carbon concrete is ...
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12.4.1 General. Ferroalloy is an alloy of iron with some element other than carbon. Ferroalloy is used to physically introduce or "carry" that element into molten metal, usually during steel manufacture. In practice, the term ferroalloy is used to include any alloys that introduce reactive elements or alloy systems, such as nickel and cobalt ...
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Ferrochrome (FeCr) is the main source of chromium (Cr) units used in modern-day chromium (Cr) containing alloys. The vast majority of produced Cr is used during the production of stainless steel, which owes its corrosion resistance mainly to the presence of Cr. In turn, stainless steel is mainly produced from Cr-containing scrap metal …
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Furthermore, the compressive strengths of ferrochrome slag concretes are 15.8% and 3.6% higher than conventional concrete, and the water absorption of ferrochrome slag low-carbon concrete is ...
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the right slag composition. The slag composition is tested every day by sampling and analysis. The typical ferrochrome slag composition is 30 % SiO 2, 26 % Al 2O3, 23 % MgO and 2 % CaO. The chrome content in the slag is about 8 % and the iron content 4 % respectively. Ferrochrome slag is acid. Its basicity is 0.8 when it is calculated by ...
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In the present Investigation, Geopolymer (GP) is made using High carbon Ferrochrome (HCFC) slag by synthesizing silicon and aluminum present in it with alkali liquid solution which binds other non-reactive materials present in the slag. The compressive strength of GP is found to be 11 MPa after 7-days of air curing. Increasing …
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large amount of chromium was mainly lost in high carbon ferrochrome slag (HCFS) and fly ash (Daavittila et al., 2004; Jeremiah et al., 2006). Producing one megagram of high carbon ferrochrome can ... After being crushed to the maximum particle size under 2 mm, the slag samples (300 g) with 50% solid concentration were ground for 15, 20 and 25 ...
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Ferrochrome slag is a waste material obtained from the manufacturing of high carbon ferrochromium alloy. This slag is formed as a liquid at 1700 °C and its main components are SiO2, Al2O3 and MgO.
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Ferrochrome slag is a gray-black metallurgical slag which is produced during smelting carbon ferrochrome alloy with different carbon content. The metallurgical waste slag is formed after high temperature reduction of chromite by pyroelectric furnace at 1700 °C which uses carbon as a reducing agent [].According to the carbon content, this …
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Effects of compound chemical activators on the hydration of low-carbon ferrochrome slag-based composite cement. ... of 0.5, 1 and 1.5%. Besides, the FSS (10, 20, 30, 40, 50, and ) is incorporated in the place of crushed sand (Csand). The in-depth material characterization demonstrates the shape, micro texture, and elemental …
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[0072] The high-carbon ferrochrome molten slag with a furnace temperature of 1620°C is discharged from the electric furnace (40000KVA), flows out through the launder, and is wind-pulverized with the nozzles arranged under the trough. ... [0077] Make the wind crushed slag fly to the wind tunnel with a length of 30m and a …
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Low carbon ferrochrome slag (LCFS) is the metallurgical waste slag from the carbon ferrochrome alloy smelting process. ... In addition, replacing crushed dolomite with heavyweight aggregates of ...
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Ferroalloy refining process is the smelting process that further refines the alloy produced by crude processing in submerged arc furnace or blast furnace, in order to obtain pure ferroalloy. Ferroalloy refinement includes: decarburization refinement of high-carbon ferromanganese and high-carbon ferrochrome which generates medium/low …
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high carbon ferrochrome slag at 100 - 500°C. High-carbon ferrochrome slag has a low heat rate, and its thermal conductivity at 100°C is 1.396W/(mK), and the thermal conductivity decreases with the increase of temperature [5]. The more complex the phase structure of the material contained in the general material, the greater the difference in ...
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High-carbon ferrochrome is mainly used as alloying agent for bearing steel, tool steel, and high-speed steel with high-carbon content, additive agent for cast iron, …
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The ferrochrome industry in. South Africa is the largest in the world. The slag to metal ratio of the ferrochrome process is. averaged to 1.5, therefore, for every ton of ferrochrome produced, 1.5 ...
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Ferrochrome –silicon is another chromium ferroalloy directly produced from chromite ores by carbothermic reduction in submerged arc furnace. The chromium content ranges from 34 to 42%, that of silicon from 38 to 45%, and that of carbon from 0.05 to 0.06%. The mix order is similar to that of smelting high-carbon ferrochromium except that it ...
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