2.2 Ferrochrome slag products The ferrochrome slag products are granulated slag as well as classified slag products made by crushing and screening. The main part of slag is granulated. The cr ushed and screened slag products are produced from air cooled lumpy slag which is collected from various process phases, e.g. from ladles and launders.
Viable recovery of HCFeCr alloy from slag could mean that producers can shut down furnaces during the times of high cost of production and low demand and rely on the low …
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. ... Al in the alloy (20.56% recovery) and Al2O3 (85.78% recovery) in the slag was achieved at a charge mix consisting of 1000 g of FeCr slag, 300 g ...
Small investment and low cost. The ferrochrome smelting slag processing program integrates crushing, screening, jigging and dewatering processes.
Comprehensive Characterization of Ferrochrome Slag and Ferrochrome Ash as Sustainable Materials in Construction
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 per ton of hot metal (Jena and …
The chemical costs for leaching 1 kg of ferrochrome slag were deduced to be US$0.4944. The chemical costs of leaching ferrochrome slag are less than those of recovering magnesium from ores as ferrochrome slag is assumed to be free.
A metal-from-slag plant allows producers to cope with fluctuating ferroalloy markets. During times of low prices, a producer can shut down furnaces and rely on the low-cost metal-from-slag product to remain viable. When …
The authors of [20] provide data on the extraction of chromium from a high-carbon ferrochrome slag by magnetic separation, on measuring the viscosity of a CaO-SiO 2 -CrO slag [21], and on using a ...
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 …
This processing plant is for the slag to recovery the Ferrochrome. The process is as below: The wheel loader or excavator feeds the raw slag to the hopper. There is an Electromagnetic vibration feeder under the hopper, which can feed the material to the belt conveyor more evenly.
Recovery of ferrochrome values from flue dust generated in ferroalloy production - A case study March 2011 Mineral Processing and Extractive Metallurgy IMM Transactions section C 120(1):61-63
It can ensure that the ferrochrome alloy has a higher recovery rate, so as to maximize the profit of the recovery and treatment of ferrochrome smelting slag. At the same time, this solution also has many advantages such as small …
The aim of project is to raise the production from 420 to 500 tonnes of ferrochrome production per month by introducing a mechanical separator at metal recovery plant that produces 80 tonnes.
South Africa holds more than 70% of the world's viable chromite ore reserves and produces ~46.2% of the world's high carbon ferrochrome. It was recently reported that beneficiated South African ...
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 of its leaching into the …
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 ...
Atoll's clients enjoy the benefit of the high recoveries of cost effective MRP plants which produce saleable coarse metal (<2% slag) at >95% recovery, saleable fines (<2% slag) at >95% recovery and ultrafines (<10% slag) at >70% recovery.
Plant Capacity 430 000 ton of Ferrochrome per Annum - Normal Grade Product and Alternative Grade Product - Recovery Product (Typical < 3% slag) 6 Furnaces with 220MVA Installed Capacity Agglomeration Capacity 900 000 ton p.a. - Blocks 400 000 ton p.a. and Pellets 500 000 ton p.a. Recovery Plant: 30 000 ton Ferrochrome p.a.
3 in the high carbon ferrochrome slag Jing Chang 1, ... 2016; Van Staden et al., 2014; Xue et al., 2018). At present, the high-cost leaching method is the main . 461 Physicochem. Probl. Miner. Process., 56(3), 2020, 460-470 ... The HCFS sample was obtained from a ferrochrome plant of Mintal Group Co., Ltd in Inner Mongolia of China. The d
2.1 Operating Cost Slag has, with the exception of a few instances, been seen as an unavoidable but necessary cost of producing fer-roalloys. The removal, treatment, and disposal of slag are …
As a result, the cost of ferrochrome production is enhanced. 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 temperature insulation bricks, construction work using geopolymer made from chromium slag, etc. Therefore, R&D scientists are trying ...
Abstract: This study assessed chromium pollution in soils, plants, water and slag from a ferrochrome smelting plant in Gweru, Zimbabwe. Speciation of chromium in plant leaves, soil and slag samples was carried out by selective leaching of Cr (VI) using a sodium carbonate leaching procedure prior to the spectrophotometric determination of Cr (VI).
There exists a strong business case to incorporate a pyrometallurgical Slag Cleaning Furnace (SCF) into the process-chain of large ferrochrome producing sites, or into an integrated steel plant ...
ECOFERTEC is designing customized steel slag processing and metal recovery plants for each project-specific purposes. The newest technology ECOFERTEC slag processing plant enables the most cost-effective way to remove steel from …
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.
Semantic Scholar extracted view of "The recovery of ferrochrome from slag at Zimasco" by H. P. Mashanyare et al. ... Recovery of metal from slag/mixed metal generated in ferroalloy plants—a case study. R. Sripriya C. Murty. Materials Science, Engineering. 2005; 28. …
High carbon ferrochrome (HCFeCr) alloy is the main source of chromium in steel making processes. During the production of high carbon ferrochrome alloy, in ferrochrome smelters, a substantial amount of slag is produced. These slags are generally disposed of in slag dumps or containment facilities causing environmental and containment problems.
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 ...
water and steam explosions), potential for slag heat recovery (via hot air for direct use or steam generation), production of higher value slag products with tunable properties (for example for use in abrasives, cement, or as aggregate), and reduction in the costs of slag handling (due to lower temperatures, lower maintenance requirements, and
The plant recovery is widely used for an assessment of plant performance in mineral and metal processing plants. It has been formulized as a uniform function in the form of a ratio of output to input.
The amount of slag generated is assumed to be 1.05 times the ferrochrome production based on plant data. 5. Temperature of ferrochrome slag is taken to be 1923 K (1650 °C) ... Percentage of heat recovery from ferrochrome slag is observed to be approximately 11 pct due to the thermodynamic limits in heat transfer between cooling slag and air ...
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 well as large …
production from 420 to 500 tonnes of ferrochrome production per month by introducing a mechanical separator at metal recovery plant that produces 80 tonnes. The difference in specific gravities of ferrochrome and slag is the key principle applied in achieving separation of the two products. The densities of ferrochrome and slag are 6800 kg/