Ferrochrome slag (FCS) is a common by-product generated during the sintering process of chromite in a submerged arc furnace, where temperatures can reach as high as 1700 ℃. The residual slag, separated from the alloy, is typically disposed of using stacking or landfill methods as solid waste[1], [2], [3].
Ferrochrome slag (FCS) is a by-product of ferrochrome industries and is produced during the extraction of ferrochrome from chromite ore. The chemical …
In ferrochrome manufacturing process, the slag is a reactive medium, where most of the reduction reaction takes place. Ferrochrome ... Materials and methods. The ferrochrome slag samples were collected from the operating plants of ferrochrome industry with submerged arc electric furnaces, situated in Kalinganagar industrial …
In this process, the premelted chromium-lime melt and silico-chromium alloy are charged into the ladle outside the furnace, to generate extra-low-carbon ferrochrome. This process was invented by R. Perrin in 1938, who is a French scientist, and later, this method was named as Perrin process.
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 …
Ferrochrome slag is a common industrial solid waste produced during the smelting of chromite in submerged arc furnaces [8].In the current production process, …
The main processing method of chromium slag starts from the recovery of ferrochrome ferrochromium slag, and then the residual waste is recycled. ... ferrochrome slag processing using dryrecovery from steelmaking slag fines by process optimization of upgrading the slag fines with dry magnetic separation. ... ferrochrome slag …
Hence the challenge was to develop a process of magnetic separation process flow sheet to recover metallics from ferrochrome furnace slag. Since there was no established process, we developed a ...
Introduction. 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 …
Ferrochrome slag . Ferrochrome is an alloy obtained from chromite ore containing iron and chromium and is mostly used for production of stainless steel. Ferrochrome slag (FCS) is the waste material produced during the production of iron and steel by processing chromite ore in electric-arc furnaces in ferrochrome production …
When using ferrochrome slag (FCS) as the magnesium source, 47.9%, 47.4%, and 46.9% losses in mass were observed for heating rates of 5°C/min; 10°C/min and 15°C/min respectively. ... The mean activation energies for struvite produced using FCS were deduced using isoconversional kinetic methods and ranged from 49.81to 56.20 …
The most common recovery process is to crush the slag (in the case of the first slag-handling method) and recover the alloy particles in a wet jigging process. In particular cases where the high carbon ferrochrome is sufficiently magnetic, magnetic separation techniques can also be applied.
Ferrochrome slag that has been water-cooled is present in granulated form with grain sizes that are similar to natural sand. Ferrochrome slag is a derivative of the manufacturing of ferrochrome, an alloy of Cr (chromium) and Fe (iron) with chromium by 51–69 percent of the mass and varying proportions of Fe (iron), C (carbon), and others …
Ferrochrome slag generated from alumino-thermi method piles up in large quantities poses many problems to the environment and contaminates ground water on long run, needs.. ... The recovery of chromium metal in the slag is 64%. The method is viable for the commercial recovery of chromium from slag. ... K.J. and T. Ramasami, 2003. Sustaining ...
Oxygen blowing method refining medium and low carbon ferrochrome, using liquid carbon ferrochrome as raw material, blowing into the molten pool to add a small amount of lime, fluorite slag, before ...
Ferrochrome slag (FCS) is a common by-product generated during the sintering process of chromite in a submerged arc furnace, where temperatures can reach as high as 1700 ℃. The residual slag, separated from the alloy, is typically disposed of using stacking or landfill methods as solid waste [1], [2], [3]. In practical applications, air ...
PL112527B1 - Method of solidification of the slag formed in the process of ferrochrome manufacture - Google Patents Method of solidification of the slag formed in the process of ferrochrome manufacture Download PDF Info Publication number ... 238000004519 manufacturing process Methods 0.000 title claims description 17;
Low carbon ferrochrome is produced by mixing chromite and iron in an electric arc furnace. It is widely used in the casting and steel industries, particularly in the production of low carbon structural steel, chromium steel, and alloy structural steel. Based on carbon content, ferrochrome alloys can be classified into high carbon ferrochrome, …
Assessments of all process steps associated with conventional ferrochrome production indicated that smelting will lead to the formation of unintended small amounts of Cr(VI) (mg.kg −1 concentration range), irrespective of the technology applied. However, this review proved that it will be possible to produce ferrochrome without causing …
The composition of ferro-chrome slag in the phase diagram is shown in Figure 3. The proportion of quartzite in the charge mix controls the right slag composition. The slag …
Ferrochrome slag that has been water-cooled is present in granulated form with grain sizes that are similar to natural sand. Ferrochrome slag is a derivative of the …
The recovery of ferrochrome (FeCr) alloy from fine (<600 μm) ferrochrome slag typically involves the use of gravity concentration, amongst other physical separation techniques.This study demonstrates the value of utilising mineralogical methods both to determine alloy composition and liberation and to assist in setting up …
The utilization of ferrochrome slag as a solid waste resource holds significant potential for reducing environmental impact and promoting sustainable practices. This review summarizes the material characteristics and utilizations of ferrochrome slag based on existing research. The benefits such as enhanced mechanical strength from …
The recovery of ferrochrome (FeCr) alloy from fine (<600 μm) ferrochrome slag typically involves the use of gravity concentration, amongst other physical separation techniques. This study demonstrates the value of utilising mineralogical methods both to determine alloy composition and liberation and to assist in setting up …
The invention relates to the field of ferrous metallurgy, is intended for the processing of slags from the production of high carbon ferrochrome grades and can be used to extract weakly magnetic alloys from metallurgical slags. The purpose of the invention is to increase the degree of extraction of the alloy from slag. Pneumatic separation of crushed slag …
Furthermore, the slag from the smelting furnace often tends to be viscous and retains particles of the metal of the order of 1–2%. The dump at the ferrochrome plant, Bamnipal, containing valuable ferrochrome justified the construction of a "metal from slag recovery plant", if a suitable process could be developed.
The invention discloses the system and method for processing ferrochrome slag, which includes：Granulating device, the granulating device have melting ferrochrome slag entrance and the outlet of the first spherolite；There is the first spherolite entrance and the second spherolite to export for consolidation device, the consolidation device, and the …
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 …
Medium, low and micro-carbon ferrochrome alloy are generally made of silicon-chromium alloy, chromite and lime. Desiliconization is refined with a 1500-6000 kV electric furnace. It is operated with a high alkalinity slag (CaO/SiO2 is 1.6 to 1.8). Low-carbon, micro-carbon ferro chrominum is also produced on a large scale by the heat …
The invention relates to ferrous metallurgy, in particular, to the processing of disintegrating slags from the production of low carbon ferrochrome. The aim of the invention is to reduce metal losses with a non-magnetic product and to improve the quality of the magnetic product. The method consists in that the slag is first screened, then the fraction up to …
In this study, solid wastes from the industrial sector, namely ferrochrome slag (Fs) and fluorite tailings (Ft), were employed for the preparation of glass-ceramics by the sintering method. Three glasses were prepared by using the melt-quenching method, with a weight ratio of 60∼70 % Fs and 40∼30 % Ft (designated S30, S35, and S40, …
