Chromium-bearing slags produced during the stainless-steel smelting (SSS) are important recyclable secondary resources. Recovery of chromium from these slags is not only …
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Given that ferrochrome is extremely magnetic and residual chromite in high-carbon ferrochrome slag is moderately magnetic, ferrochrome particles and residual chromite in the …
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Hence, ferrochrome slag is thought to be a useful raw material for production of high temperature insulation bricks, construction work using geopolymer made from chromium slag, etc. Therefore, R&D scientists are trying to find suitable uses for other applications. In this chapter, the fundamentals of ferrochrome slag chemistry are discussed.
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The aim of this study is to demonstrate the potential of Cr(VI) generation during jigging operation applied for ferrochrome recovery from slag. The Cr(VI) concentrations of water contacted with ferrochromium slag (W/FS = 10) in a closed cycle after 50 batches were found as 0.61 mg/l. Also, reduction of Cr(VI) to Cr(III) and a subsequent ...
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The alloy with a Cr grade of 70.84% and a V grade of 2.36% can be obtained by keeping SSS and stone coal at a ratio of 50 : 31 at 1600 °C for 120 min. The corresponding recovery rates of Cr and V are as high as 99.51% and 81.25%, respectively. And the content of Cr 2 O 3 in reduced slag is only 0.49%. It thus provides a new idea for the co ...
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In a nutshell, this study provides a thorough and critical examination of ferrochrome slag and ferrochrome ash's suitability for construction, as well as a list of the major …
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In this study, the recovery of Mg from ferrochrome slag was investigated using hydrochloric acid (HCl) as the lixiviant at low temperatures. Previous studies have shown that various metal oxides have been proven to be more amenable to leaching using HCl.
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By applying mineral processing technologies, such as crushing, grinding, magnetic separation, eddy current separation, flotation and so on, leaching or roasting, it is possible to recover metals...
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Slags produced in the steelmaking industry could be a source of chromium. Slags contain, depending on different types of slags, between 2 to 5 wt.% of Cr. Roasting of slag with NaOH, followed by subsequent leaching can …
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These metal constituents can be recovered from slags by employing mineral processing techniques like crushing, grinding, magnetic separation, eddy current separation, flotation, leaching, and/or roasting.
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In a nutshell, this study provides a thorough and critical examination of ferrochrome slag and ferrochrome ash's suitability for construction, as well as a list of the major shortcomings that must be addressed to accomplish construction sustainability.
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The two well-established methods predominantly used in steelmaking are the blast furnace-basic oxygen furnace (BF-BOF) and the electric arc furnace (EAF), with the former currently accounting for the majority (70.7%) of the global steel production [6].However, the decarbonization potential of EAF steelmaking has garnered interest in recent years, aligning …
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Producing one ton of steel in an integrated steel plant generates about half a ton of by-products, i.e., slags (90% by mass), dusts, and sludges. A blast furnace (BF) produces the most slag, with smaller amounts generated in a basic oxygen furnace (BOF) and an electric arc furnace (EAF).
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Valorisation of ferrochrome slag towards increasing the utilisation of ferrochrome slag in South Africa, Stellenbosch: University Of Stellenbosch (Faculty of Engineering at Stellenbosch University).
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An experimental investigation revealed that the maximum recovery of Si (57.4% recovery), Al in the alloy (20.56% recovery) and Al 2 O 3 (85.78% recovery) in the slag was achieved at a charge mix consisting of 1000 g of FeCr slag, 300 g of alumina, 200 g of cast iron and 300 g of coke.
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Gravity separation and magnetic separation methods were found to be effective for recovery of Cr from the ferrochrome slag. ... Basic oxygen steelmaking slag has been tested as a starter material ...
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The aim of this study is to demonstrate the potential of Cr(VI) generation during jigging operation applied for ferrochrome recovery from slag.
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Given that ferrochrome is extremely magnetic and residual chromite in high-carbon ferrochrome slag is moderately magnetic, ferrochrome particles and residual chromite in the slag can be recovered by using a magnetic separation technology.
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The recovery of ferrochrome from slag at Zimasco. Minerals Engineering (1997) H. Motz et al. Products of steel slags an opportunity to save natural resources. Waste Management ... System assessment of recycling of steel slag in converter steelmaking. Journal of Cleaner Production, Volume 125, 2016, pp. 159-167.
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At Orbix NV in Belgium, stainless steel is recovered from SS slags by a treatment process based on size reduction, density, and magnetic separation. For carbon steel, the lower value of the recovered metal permits …
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Ferrochrome is an important alloy addictive for steelmaking. The addition of chromium can significantly improve the corrosion resistance and oxidation resistance of steel, increase wear resistance, and maintain high-temperature strength. ... as well as medium-, low-, and extra-low-carbon ferrochrome by slag-free method, raw materials for ...
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Producing one ton of steel in an integrated steel plant generates about half a ton of by-products, i.e., slags (90% by mass), dusts, and sludges. A blast furnace (BF) produces the most slag, with smaller amounts generated in …
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Ferrochrome slag is a by-product of the production of ferro-chrome alloy, an essential component in stainless steel. The conventional process of ferrochrome making …
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Chromium-bearing slags produced during the stainless-steel smelting (SSS) are important recyclable secondary resources. Recovery of chromium from these slags is not only beneficial to increase the slag's economic potential but also favorable to solve the environmental problems induced by the chromium (VI) in the slags.
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A possibility to transform the nonmagnetic iron bearing compounds to magnetite in the steelmaking slag by oxidation has been confirmed. download Download free PDF View PDF chevron ... Rao (since retired) for their support during the investigations. References Mashavare, H.P., Guest, R.N., 1997. The recovery of ferrochrome from slag at Zimasco ...
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An experimental investigation revealed that the maximum recovery of Si (57.4% recovery), Al in the alloy (20.56% recovery) and Al 2 O 3 (85.78% recovery) in the slag was achieved at a charge mix consisting of 1000 g of …
WhatsApp: +86 18221755073
These metal constituents can be recovered from slags by employing mineral processing techniques like crushing, grinding, magnetic separation, eddy current separation, flotation, leaching, and/or roasting.
WhatsApp: +86 18221755073
Ferrochrome slag is a by-product of the production of ferro-chrome alloy, an essential component in stainless steel. The conventional process of ferrochrome making involves the carbothermic reduction of chromite ore where around 1.2–1.5 tons of slag containing approximately 8–12% of chromium oxide is generated per ton of hot metal ( Jena ...
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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% SiO2 ...
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At Orbix NV in Belgium, stainless steel is recovered from SS slags by a treatment process based on size reduction, density, and magnetic separation. For carbon steel, the lower value of the recovered metal permits only less complicated treatment processes, e.g., using only magnetic separation.
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