Value Extraction from Ferrochrome Slag: A Thermochemical …
The valorization of slag from the production of high-carbon ferrochrome is a challenge for ferrochrome producers. The recycling of high-carbon ferrochrome slag was explored through the smelting route to recover Fe–Si–Al–Cr alloys and reengineer the residual slag for alumina-enriched refractory material. In this research, the focus was to reduce the SiO2% and …
Magnesium recovery from ferrochrome slag: kinetics …
Research article Magnesium recovery from ferrochrome slag: kinetics and possible use in a circular economy L.B. Moyoa,b,*, G.S. Simatea, T.A. Mamvurac a School of Chemical and Metallurgical ...
Comprehensive Characterization of Ferrochrome Slag and Ferrochrome …
Ferrochrome slag (FCS) and ferrochrome ash (FCA) are by-products generated during the production of ferrochrome alloy in the ferrochrome industry.
An Overview of Currently Applied Ferrochrome Production …
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 and FeCr, which is a …
Recovery of Chromium from Ferrochrome Slag
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 of ferrochrome from slag at Zimasco
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 ...
Recovery of chromium from ferrochrome slag
Ferro chrome slag may contain chromium in +3 and +6 oxidation states. Separation and determination of chromium content of the slag samples collected from Jindal Ferro Alloys Corporation, (Kottha ...
Comprehensive Characterization of Ferrochrome Slag and Ferrochrome …
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 [18 ...
ESTIMATION OF SLAG IN FERROCHROMIUM for TMS …
A deduction is made to the amount of slag recovered based on the ferrochrome content after the chrome content of the slag is analyzed. The values of magnesium and
JPS58217648A
PURPOSE:To recover the metal in slag at high yield, by a method wherein a magnetically attracted substance obtained by a method wherein abandoned slag generated during the preparation of high carbon ferrochrome crushed to be subjected to ferromagnetical beneficiation and remelting slag high in metal content are crushed to a specific size or less to be subjected …
Recovering phosphorus as struvite from anaerobic digestate …
A substantial amount of ferrochrome slag is produced in Zimbabwe which is estimated to be between 1.1 and 1.6 tonnes of slag per tonne of ferrochrome produced . Unfortunately, the associated generation of this solid waste in local mines is increasingly creating a burden on the environment as it occupies valuable landmass and is also creating a ...
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 ...
Ferrochrome slag: A critical review of its properties, …
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 …
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 …
A Sustainable Method for Chromium Recovery from …
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 ...
Ferrochrome
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.
Recovery of Chromium from Ferrochrome Slag | Request …
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 ...
Magnetic Separation of Metallics from Ferrochrome Slag
Metal content in the ferrochrome furnace slag : between 1% to 3% 2. Size distribution of slag varies : 0 mm - 40mm. 3. Density of metallics : 5,000 and 6,500 kg/m3 4. Density of slag particle : 2,700 to 3,300 kg/m3 5. ... - Recovery of Metallics from slag to extent of ~ 2% - Slag made free from almost all metallics : no longer attractive for ...
Magnesium recovery from ferrochrome slag: kinetics and …
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. ... This study examined the effects of acid content, leaching temperature, and reaction ...
Recovery of chromium from chromium-bearing slags …
SAF slag, EAF slag, and AOD slag are typical chromium-bearing SSS slags. The recovery of chromium from those slags via appropriate methods has significant economic and environmental benefits. The physicochemical features of SAF slag, EAF slag, and AOD slag were appraised in this study, including a relatively high content of chromium and complex ...
Value Extraction from Ferrochrome Slag: A …
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 …
Environmental and technical assessment of ferrochrome slag …
In ferrochrome manufacturing process, the slag is a reactive medium, where most of the reduction reaction takes place. Ferrochrome (FeCr) slag is found to consist of mainly silica, alumina and magnesia with significant amounts of chromium and iron oxides in the form of Partially Altered Chromite (PAC) and entrained ferrochrome alloy [4].At smelting condition, …
Recovery of Chromium from Ferrochrome Slag
Recovery of chromium from ferrochrome slag is 64% by treatment of slag with lime at 973K in solid phase. The soluble chromium ion was extracted with water. The chromium from liquid …
Hexavalent chromium removal by ferrochromium slag
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 ...
Recovery of chromium from ferrochrome slag
Recovery of chromium from ferrochrome slag. Abstract. Ferro chrome slag may contain chromium in +3 and +6 oxidation states. Separation and determination of chromium content of the slag samples collected from Jindal Ferro Alloys Corporation, (Kottha valasa, Visakhapatnam Dt.) has been carried out following extraction with benzene solutions of ...
Ferrochrome slag aggregate: physical-chemical characteristics and
Using two cement types, cement proportions of 1%, 2% and 3% of the slag aggregate weight mixed with optimum moisture content of the non-treated compacted slag were used to make lightly cemented ...
Comprehensive Characterization of Ferrochrome Slag …
atures, different sizes of ferrochrome slag aggregates are formed. After alloy recovery, air-cooled slag of 10–20mm size is produced, which has been utilized as coarse aggregate by numerous researchers [17]. Ferrochrome slag that has been water-cooled is present in granulated form with grain sizes that are similar to natural sand ...
PRODUCTION, CHARACTERISTICS AND USE OF …
metal recovery process for the air-cooled slag, where it is made into finished products. In addition to recov- ered ferrochrome, classified slag pr oducts are also made.
Magnesium recovery from ferrochrome slag: kinetics and
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. ... This study examined the effects of acid content, leaching temperature, and reaction ...
Crystallization behavior of smelting slag for recovery of …
The pyrometallurgical method is widely used due to its simple process, high recovery efficiency, and wide range of cheap smelting additives [13, 14]. The basic principle is that SAC, metal capture agents, and fluxes are mixed and smelted at high temperatures. ... In summary, when the slag content is 60 wt%, Fe 2 O 3 content is 30 wt% and GP ...