Recovery Of Ferrochrome From Steelmaking Slag

Hexavalent chromium removal by ferrochromium slag

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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Valuable Recovery Technology and Resource Utilization of

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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Multi-Analytical Characterization of Slags to …

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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Use of Ferrochrome Slags in the South African …

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 Overview of Precious Metal Recovery from Steel Industry Slag …

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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Ferrochrome

High Carbon Ferrochrome Technology. Johan Basson, Jorma Daavittila, in Handbook of Ferroalloys, 2013. 9.1.1 High Carbon Ferrochrome and Its Production Base. High carbon ferrochrome represents a group of alloys with a chromium content typically between 60% and 70% and a carbon content typically between 4% and 6%. To meet this specification the alloy …

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Valuable Recovery Technology and Resource Utilization of …

They mainly include stainless steel dust, stainless steel slag, ferrochrome dust, and ferrochrome slag, which contain significant amounts of valuable elements, such as chromium, iron, and zinc, as ...

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Carbon dioxide sequestration through steel slag …

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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Comprehensive Characterization of Ferrochrome Slag and …

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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Valuable Recovery Technology and Resource Utilization of

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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Hydrometallurgical Processes for the Recovery of Metals …

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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Effect of cooling conditions on the leachability of chromium …

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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Value Extraction from Ferrochrome Slag: A Thermochemical …

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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An Overview of Recovery of Metals from Slags

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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Fundamentals of Ferrochrome (FeCr) Alloy and Its Slag

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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Recovery of chromium from chromium-bearing slags …

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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Recovery of chromium from chromium-bearing slags …

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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Comprehensive Characterization of Ferrochrome Slag and Ferrochrome …

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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Ferrochrome

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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An overview of recovery of metals from slags

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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(PDF) Recovery of metal from slag/mixed metal generated in ferroalloy

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 Overview of Recovery of Metals from Slags

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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Recovery of Chromium from Slags Leachates by …

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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Multi-Analytical Characterization of Slags to Determine …

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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Ferrochrome slag: A critical review of its properties, …

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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