Ferrochrome slag (FS) having favourable mechanical properties) may be gainfully utilised as concrete aggregate. The concrete specimens with FS, natural stones (NS) and NS concrete mixed with 2% chromium nitrate salt (CR) as coarse aggregate were prepared. The samples were cured in aggressive curing solution like sulphuric acid …
NEW CASTLE, Del., Aug. 19, 2019 /PRNewswire/ -- EESTech (OTC: EESH) - EESTech's Environmental Impact Assessment (EIA) process for the Samancor Ferrochrome slag reclamation project has commenced with the appointment of EkoInfo (), a highly respected South African Environmental & Wildlife Management Consultancy. …
Ferrochrome (FeCr) slag is a waste material obtained from the manufacturing of ferrochromium alloy. Typically, it contains 30% silicon dioxide (SiO2), 26% aluminium oxide (Al2O3) and 23% magnesium oxide (MgO) in different phases such as spinel and fosterite, with minor traces of ferrous/ferric oxides, chrome oxides and 2% calcium oxide (CaO).
Abstract. Ferrochrome slag (FCS) is a by-product of ferrochrome industries and is produced during the extraction of ferrochrome from chromite ore. The …
FTIR spectra for FS are obtained in the wave number range of 4000 cm-1 to 600 cm-1 and represent different absorption band characteristics as shown in Fig. 5.The important chromium peak Cr-O is exhibited at 608 cm-The hydroxyl- O–H bonds of 3441 cm − 1 wave number) and H-O–H vibrations with a 1638 cm − 1 wave number are important …
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 …
To extract chromium from them, the most acceptable method is acid leaching. The purpose of the work is to study the influence of temperature, process duration and H 2 SO 4 concentration on the extraction of chromium from high-carbon ferrochrome slag into a sulfuric acid solution. Using mathematical planning of a 3-factor experiment, …
Ferrochrome slag is waste resulted from the manufacture process of ligature melting. It is a porous material of dark grey-green colour with 2530 kg/m ³ density and the open pores size from 1mm to ...
Sorbini was blue slag glass produced by Sowerby, but the Lealand Lake Superior Iron Company made Leland Blue Slag Glass, aka Leland Blue and Leland Blue Stone. This company was located at the …
The ferro-chrome slag passed through 4.75mm and retained in 1.0 mm IS sieves, is used and mixed with the silty soil in different ratios by weight (10:90) to (60:40), to find out the most suitable ...
The present research aims to analyze the comminution behavior of ferrochrome slag using high-pressure grinding rolls. The laboratory bench scale high-pressure grinding rolls were used to study the ...
The vast majority of ferrochrome produced is charge chrome, which has a lower chrome content ratio. Used most commonly in stainless steel, it is mainly produced in South Africa. Low carbon and medium carbon ferrochrome is used in the manufacture of special steels. Low carbon ferrochrome can be used to produce superalloys.
High carbon ferrochrome slag (HCFS) is a byproduct from the production of ferrochrome, and there is no effective method to deal with it. In this paper, aiming at comprehensive utilization of HCFS, magnetic separation is determined to separate and extract chromium materials from HCFS. The investigation and characterization show …
The high temperatures in the furnace cause the chromite to react with the carbonaceous material, producing ferrochrome and slag as byproducts. Refining: Ferrochrome produced from smelting may undergo further refining to remove impurities and adjust the composition of the alloy. Refining methods can include slag cleaning, …
Raw ferrochrome slag (coarse aggregate) 0.307: 0.048: Panda et al. [20] Raw ferrochrome slag (fine aggregate) 1.238: 0.094: Concrete with ferrochrome slag coarse aggregate replacement (OPC) 0.035: 0.029: Concrete with ferrochrome slag coarse aggregate replacement (PSC) 0.020: 0.017: Concrete with …
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 … Expand. 1. PDF. Save. Magnesium recovery from ferrochrome slag: kinetics and possible use in a circular economy.
Leaching of chromium from ferrochrome slag (Kothavalasa) using hydrochloric and nitric acid media was attempted. Rate of leaching in both acids was found to be 1st order kinetics.
High-carbon ferrochrome is mainly used as alloying agent for bearing steel, tool steel, and high-speed steel with high-carbon content, additive agent for cast iron, chromium containing raw material for producing silicochromium, as well as medium-, low-, and extra-low-carbon ferrochrome by slag-free method, raw materials for producing …
Downloadable (with restrictions)! 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 …
Ferrochrome slag (FCS) is a by-product of ferrochrome industries and is produced during the extraction of ferrochrome from chromite ore. The chemical …
Beneficiating of ferrochrome slag (FCS) waste material is envisaged as a means of achieving sustainable recovery of Mg. Previous studies have used sulphuric …
use of ferrochrome slag in various civil engineering applications such as road construction, and cement and concrete industries. 2 Ferrochrome (FeCr) Slag Ferrochrome (FeCr) slag is by product from the production of Ferrochrome, an essential component in stainless steel industry [2]. An amount of 1.1 to 1.6 ton
Vargon Alloys in Western Sweden is one of the largest producers of ferrochrome slag in Europe. Ferrochrome slag is a by-product from the production of ferrochrome, an essential component in stainless steel. Extensive tests have been carried out on the physical properties of the ferrochrome slag from …
Gravimetric, magnetic, floatation, pyrometallurgical and hydrometallurgical treatments are discussed for processing of charge chrome, steel, copper smelter, brass …
In addition to the lower dust emissions, water is also essential for protecting the stone. Glass is prone to heat fractures, and water will keep the surface cool for the most part. If the stone starts feeling hot to the touch, then set it aside and let it cool down. If you dip a very hot piece of the slag into water it may crack or shatter.
The results show that the molten salt extraction process offers a promising route towards the recovery of metal values from slags and low grade ores. Composition …
Open Access Review. An Overview of Currently Applied Ferrochrome Production Processes and Their Waste Management Practices. by. Stephanus P. du …
Ferrochrome is an alloy comprised of iron and chromium used primarily in the manufacturing of stainless steel. The ratio in which the two metals are combined may vary, with the proportion of chromium ranging between 50% and 70%. ... Once the iron-chromium alloy is produced in the furnace, the slag and the molten metal are extracted from the …
The highest compressive strength achieved from the ferrochrome slag concrete is found out to be 43.95 Mpa with 40% replacement of natural aggregates by ferrochrome slag. View Show abstract
Ferrochrome slag is a by-product produced during the production of ferrochrome alloy steel in submerged electrical arc furnace. Around 1.1–1.6 ton slag is generated per ton of ferrochrome produced depending on feed materials. (S.K. Nath, 2018). Ferrochrome slag is …
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