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South Africa's ferrochrome industry has taken its first steps towards independent power generation, with plans to generate up to 750 MW of its own electricity (comprising wind, solar and cogenerated power) by 2024, Mining Weekly can report. The industry adds significant value to chrome ore by elevating it to ferrochrome, which it …
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 ...
Chromium processing, preparation of the ore for use in various products. Chromium (Cr) is a brilliant, hard, refractory metal that melts at 1,857 °C (3,375 °F) and boils at 2,672 °C (4,842 °F). In the pure state it is resistant to ordinary corrosion, resulting in its application as an electroplated
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 …
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
The water quenched ferrochrome slag was analyzed as 8.97% Cr (total) and 2.57% Cr (metal). Optical microscopic studies were carried out on the polished sections of different size fractions of the ferrochrome slag. Wide size ranges of globular and oval-shaped ferrochrome metals within the slag sample were observed and were distributed …
On the inclusion of steel slag as an aggregate in concrete, it was observed in different studies [7][8][9] that the residual mechanical properties of the slag concrete after being exposed to ...
Ferrochrome slag (FCS) and ferrochrome ash (FCA) are by-products generated during the production of ferrochrome alloy in the ferrochrome industry. The use of these by-products as construction materials appears to be an innovative strategy that could
2.3 Use of ferrochrome slag products The ferrochrome slag products are chemically very stable. They are used in civil engineering and road con-struction and also, to some extent, producing refractory ma terials. Granulated slag is also used as subsurface drainage material. The ferrochrome slag products are quality assured and CE mark ed ...
The present study proposes the use of local industrial side streams such as ferrochrome slag, phyllite dust and mine tailings as secondary raw materials for construction, mainly as fine aggregates
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 …
MFC is situated in Middelburg, Mpumalanga and was established in 1964 as a Low Carbon Ferrochrome production facility. Charge chrome was first produced on this site in 1974 by Middelburg Steel and Alloys (Pty) Ltd, which was acquired by Samancor in 1991, making it one of only a few alloy plants in the world able to produce both charge chrome and low …
Based on study, it was recommended that water cooled Ferrochrome slag can be used as replacement of natural fine aggregate up to 60% by weight along with 100 % with natural coarse aggregates for ...
The FCS, which is the subject of the study, was obtained from the Elâzığ ferrochrome factory and as 1 kg of slag waste is generated for every 3 kg of ferrochrome during the production of ...
Ferrochrome slag (FCS) is a by-product of ferrochrome industries and is produced during the extraction of ferrochrome from chromite ore. The chemical …
Recycling and efficient utilization of the large volumes of slag generated by ferrochrome production process is a huge challenge for ferrochrome producers. This …
Ferrochrome slag utilization in concrete and mortar as an aggregate replacement. Aggregate replacement is one of the main promising areas for FCS utilization since 60–75% of the concrete volume is occupied by aggregate [7]. Different research studies explored the utilization of FCS in concrete production as partial and full …
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 …
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 …
The vast majority of mined chromite, estimated at approximately 90–95%, is used to produce various ferrochrome (FeCr) grades. Subsequently, the stainless-steel …
Ferrochrome slag is a non-plastic material and absence of cement binder causes deficiency in hydrated phase formation which could be considered a major cause of strength degradation. Even the presence of microsilica and increased compactness owing to it could not make up for this deficiency.
Ferrochrome production results in substantial amounts of slag production with literature rating slag to alloy ratios from 1.1 to 1.9. The ratio stipulates that for every ton of ferrochrome...
This paper presents an overview of the recent advances of the use of ferrochrome slag in various civil engineering applications such as road construction, and cement and …
Ferrochrome Ferrochrome (FeCr) is an alloy of chromium and iron, generally containing 48 to 70% chromium by weight. It is produced in an electric arc furnace by the reduction of chromite ore. South Africa has the largest reserves of chromite ore and is also the world's largest producer of Ferrochrome with most production being exported to China.
This shell is a metal-slag barrier for development of reduction through the depth of chromium ore grains. It is seen from Table 3 that within the slag chemical composition of high-carbon ferrochrome a reduction in SiO 2, MgO, and Al 2 O 3 is observed within slags in the fourth and fifth stages. This is connected with the fact that …
Increase in industrialization has led to the production of huge volume of side-stream materials that need safe disposal solutions. The present study proposes the use of local industrial side streams such as ferrochrome slag, phyllite dust and mine tailings as secondary raw materials for construction, mainly as fine aggregates. Four different …
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 ...
High-strength multi-component chrome pellets with specified physical and chemical characteristics were obtained for smelting chromium ferroalloys in the electric arc furnaces by mixing finely dispersed chromium concentrates, refined ferrochrome slags, and ferriferous diatomite ore with subsequent pelletization and sintering of the …
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. …
The smelted products obtained from the smelting furnaces are ferrochrome alloy and slag. The slag produc-tion is 1.1-1.6 t / t FeCr depending on feed materials. Using modern …
This paper reports the characteristics of ferrochrome slag and its feasibility as aggregate in refractories aiming to substitute refractory raw materials. Refractory castable specimens were formulated with ferrochrome slag as an aggregate and commercial calcium aluminate cement as a binder. Objective was to prepare refractory …
The chromite ore used for smelting ferrochrome is generally required to contain 340 to 50% of Cr2O. The ratio of chromium to iron is greater than 2.8. Ferrochromium alloys are classified into high carbon ferrochrome, medium carbon ferro chrome, low carbon ferrochrome, and micro carbon ferrochrome according to the …
AbstractThis manuscript aims to utilize industrial wastes, i.e.,ferrochrome slag (FS), ground granulated blast furnace slag, and fly ash to prepare alkali activated cementless controlled low strength material (CLSM). The physical properties, i.e.,...Practical ApplicationsThe present study aims to utilize a less …
ferrochrome slag as a controlled low-strength structural fill material, International Journal of Geotechnical Engineering, DOI: 10.1080/19386362.2018.1448527 To link to this article: https://doi ...
As a type of metallurgical solid waste with a significant output, chromium-containing metallurgical dust and slag are gaining increasing attention. 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 …
In addition to iron and chromium, ferrochrome may contain trace amounts of other elements such as carbon (C), silicon (Si), and sulfur (S), which can influence its properties and applications. Uses of Ferrochrome : Ferrochrome serves a variety of purposes across different industries due to its unique properties. Some key uses include:
During the production, chromium is lost through formation of slag. Hence, ferrochrome slag is thought to be a useful raw material for production of high …
Ferrochrome slag is a by-product generated during the extraction of ferrochrome whereas ferrochrome ash is a by-product of the ferroalloy industry. FCA …
