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 ...

At Tata Steel Ltd, Bamnipal, India, the recovery of metal values from ferrochrome slag has been successfully carried out by jigging [5]. A commercial jig plant has been installed in South Africa ...

The alloy content in the slag is substantial and comprises typically 1% to 4% of the total alloy tapped. It is therefore normally viable to attempt recovery of this alloy from the slag. 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.

Recycling and efficient utilization of the large volumes of slag generated by ferrochrome production process is a huge challenge for ferrochrome producers. This article reviews ferrochromium slag utilization with reference to refractory, ceramics and construction and other applications. ... Restore content access for purchases made as …

With the addition of waste silicon powder (n Si:n O = 1.5) and 6% CaF 2 into synthesized stainless steel slag, the content of Cr 2 O 3 in the slag after smelting reduction is only 0.10%, and the mass fraction of Cr in the Cr–Si alloy is 84.92% with the chromium recovery of 99.06%, indicating a promising method for the comprehensive ...

The results showed that the total chromium recovery ratio exceeded 70%, while the total chromium content in isolated residue slag was below 5% under the conditions of approximately 50~60% of ferrochrome dust, 20~25% of chromium return slag, 20~25% of soda ash, and a reaction temperature ranging from 1000 to 1200 °C.

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 ...

The novelty of this study is to investigate the effect of ferrochrome slag (FS) replacement on the high temperature resistance of alkali-activated granulated blast furnace slag (AAS). The alkali-activated mortar samples were prepared by granulated blast furnace slag (GBFS) and FS at rates of 100/0, 80/20, 70/30, and 60/40 wt.%. A mixture of …

In this study, the recovery of Mg from ferrochrome slag was investigated using hydrochloric acid (HCl) as the lixiviant at low temperatures as various metal oxides have been proven to be more amenable to leaching using hydrochloric acid. ... AI training, and similar technologies. For all open access content, the Creative Commons licensing …

Ferrochrome slag is treated with lime to conduct slag-lime solid-solid reaction. Chromium present in the slag reacts with lime to form mixed chromates. The reaction is conducted at 973K, soluble ...

With the addition of waste silicon powder (nSi:nO = 1.5) and 6% CaF2 into synthesized stainless steel slag and reduction of the slag at 1600 °C, the content of Cr2O3 decreased from 10 to 0.10 wt ...

With the addition of waste silicon powder (nSi:nO = 1.5) and 6% CaF2 into synthesized stainless steel slag and reduction of the slag at 1600 °C, the content of Cr2O3 decreased from 10 to 0.10 wt ...

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 to be addressed very urgently. It principally contains chromium, alumina, Iron, magnesium, calcium in small quantities. This paper deals with extraction of chromium …

The treatment plan of ferrochrome smelting slag comprehensively adopts the processes of crushing, screening, jigging, and dewatering. First, coarse crushing is used to crush a large piece of ferrochrome smelting slag in two stages to obtain ferrochrome smelting slag below 30mm. Then the crushed product is sent to a large particle jig for ...

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 …

1. Treatment of slag with lime to convert chromium present in the slag into chemical compound soluble in water like CaCr2O7, Na2Cr2O7 etc. 2. Extraction of chromium ion into water. 3. Water extract of chromium can be separated by adsorption onto Flyash based zeolite. 4. Recovery of chromium from zeolite. 5.

The ferrochrome settling behavior significantly affects the smelting performance of a submerged arc furnace. This paper presents a three-dimensional (3D) transient mathematical model simulating the complex multiphase flow and thermochemical phenomena inside an industrial furnace. Via the model, the smelting phenomena are …

With the addition of waste silicon powder (nSi:nO = 1.5) and 6% CaF2 into synthesized stainless steel slag and reduction of the slag at 1600 °C, the content of Cr2O3 decreased from 10 to 0.10 wt ...

ferrochrome slag. Ferrochrome slag is a solid waste generated during the smelting of ferrochrome. Due to the limitation of the smelting process, there are unevenly thick ferrochrome particles in the ferrochrome smelting slag. The recovery of ferrochrome particles is the only profit point of ferrochrome slag processing.

In this study, blast furnace slag- (BFS) and Elazığ ferrochrome slag (EFS)-based geopolymer concretes were produced. Samples were immersed in 5% phosphoric acid (H3PO4), hydrochloric acid (HCl), hydrofluoric acid (HF) and sulfuric acid (H2SO4) solutions for 12 weeks. The compressive strengths, ultrasonic pulse velocities, weight …

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Virtually all charge chrome plants now use the crushing/jigging process to recover chrome alloy from both stockpiled and currently produced slag. Studies were carried out at R&D, Tata Steel to develop a flow sheet for the recovery of metal from metal–slag mix generated in its charge chrome (ferrochrome with 50–60% chromium) plant, Bamnipal.

recovered. The recovery of chromium metal in the slag is 64%. The method is viable for the commercial recovery of chromium from slag. KEY WORDS: Chromium, recovery, ferrochrome slag, adsorption, zeolite. I. INTRODUCTION Slag is a solid waste laden with heavy metal carrying chromium compounds imparts many problems to the environment.

The recovery increases with time and reaches maximum at 4 minutes which is an equilibrium concentration of chromium on zeolite. Further experimentation was carried out at a time of 7 minute: VII.CONCLUSIONS • Recovery of chromium from ferrochrome slag is 64% by treatment of slag with lime at 973K in solid phase.

Huge amount of ferrochrome slag, a solid waste is being generated from submerged electric arc furnace during manufacturing of ferrochrome alloy. The waste slag contains about 6–12% chromium as chromium oxide and it has the potentiality of releasing hazardous chromium compounds. Although chromium exists in the slag as highly …

The large-sized in situ lumped slag after cooled ambient air was taken for size reduction for ferrochrome alloy retrievals. The waste FS after alloy recovery was found in the range of 8–20 mm size. Particle Size Distribution (PSD) of crushed FS was carried out and is depicted in Fig. 1. This fulfills the required size of the crushed slag to ...

The data on measuring the slag viscosity of the CaO-SiO2-CrO system are presented by authors of [15]; extracting chromium from high-carbon ferrochrome slag by magnetic separation is in [16]; it is ...

These metal recovery plants are used to recover the entrapped metal (ferrochrome) from the slag generated during the production of Ferro Chrome and Charge Chrome. The slag, which has a metallic content of approximately 4 percent, is passed through crushing units and broken down to minus 15 mm material. This crushed material then passes through ...

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 …

The high recovery of phosphorus of 89.6% indicates that ferrochrome slag can be an adequate magnesium source for struvite precipitation. The investigated parameters (pH; N:P; Mg:PO 4 ) showed that they all have a significant impact on the phosphorus recovery deduced from the ANOVA which had all p values < 0.05.