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Ferrochrome Recovery From Slag

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WO2011045755A1

This process allows chrome recovery in the production of ferrochrome from smelting of chromium ore to be increased from a typical amount of about 70% to 84%, to more than 90%, typically about 95%. This invention relates to a process for recovering ferrochrome alloy and chrome from slag containing entrained ferrochrome alloy and Cr2O3.


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Ferrochrome slag Metal recovery plant in Zimbabwe

Ferrochrome slag wash plant/metal recovery plant is used to recover alloy from ferrochrome slag.During discharing the slag from submerged arc furnace, there are some alloy mixed in the slag. recovery the plant can not only reduce the waste of good products,can also get a rich profit. many alloy companies begin to set up the metal recovery plant.


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About Atoll Metal Recovery, Dr. Peter Scott,uranium

Since its formation, the JV has built 18 major metal-from-slag recovery plants in Southern Africa capable of processing between 120 and 200 t/h of slag. It has also constructed a 100 t/h plant for Sweden, 60 tph plants for France, Romania, Turkey and the USA and conducted BFS's for 6 major plants (200 t0 300 tph) in Eastern Europe.


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Low cost ferroalloy extraction in DC

recovery Ferrochrome production by DC-arc furnace comprises the following plant or processes: Raw material receiving and storage Ore drying Batch preparation Furnace feeding on a feed/power proportion basis Smelting Alloy and slag tapping Off-gas cleaning and furnace pressure control Effluent treatment Cooling water plant


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SOME ASPECTS OF THE PRODUCTION OF FERROCHROME

The latter slag type is presented in Figure 5 and Figure 6. Fluxing to produce the required slag composition was carried out using either silica or a combination of silica and lime (in the form of burnt lime or limestone). The resulting ternary slag contained in mass percent about 30-40% MgO, 30-40% Al2O3 and 20-30% SiO2. In the quaternary slag


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Plasma Furnaces in Africa

Synopsis: Plasma-furnace technology was first applied in Africa in the mid- to late 1970s, when it was realised that advantages could be obtained in the processing of fines for the production of ferro-alloys. A number of processes have been investigated, and a 40 MVA DC transferred-arc ferrochromium furnace has been implemented on an industrial scale at Palmiet Ferrochrome, Krugersdorp.


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Separation of Metals from a Slag Using a Multi

Ferrochrome recovery from slag fines Slag/metal/sand slimes This material is the classifier fines from Company A (Phase II expansion plant) in South Africa. The feed sample with a top size of 0.3mm was tested as received using the Yang jig pilot plant unit. The sample was also tested after screening to remove +0.15mmparticles.


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Opinion: Ferrochrome plant needs public awareness

Contamination of soil, surface and groundwater can also occur through release of industrial waste-water and leaching of soluble Cr-VI compounds from wastes such as mine tailings, waste rock, dust and slag piles." To make ferrochrome, chromite ore is mined, crushed and processed to


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Journal of Chemical and Pharmaceutical Research, 2013, 5(5

Recovery of chromium from ferrochrome slag A. V. L. N. S. H. Hariharan* and D. Murali Krishna Department of Chemistry, GIT, GITAM University, Visakhapatnam, India _____ ABSTRACT Ferro chrome slag may contain chromium in +3 and +6 oxidation states. Separation and determination of


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The recovery of ferrochrome from slag at Zimasco

Nov 01, 1997Recovery of ferrochrome from slag 1255 While being attractive financially, the process also allows metal free tailings to be disposed of in a more environmentally friendly manner. Where required, a window of opportunity is also provided for the removal and disposal of potential pollutants from slag dump sites.


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Recovery of Ferrochrome from Ferrochrome Smelter Slag by

Recovery of Ferrochrome from Ferrochrome Smelter Slag by Gravity separation Ferrochrome slag recovery plant in Shanxi Province. Recently, Forui Machinery designed 5 chromium slag processing production lines for Customers in Shanxi, China, and carried out


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Open Slag Bath Smelting Plant

Get higher metal recovery, lower raw material consumption, and low CO₂ and dust emissions. Our open slag bath smelting furnace is a closed-type, environmentally friendly, and energy efficient solution. Minimizes energy, coke, and electrode paste consumption ; Enables high productivity and metals recovery


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Separation of Metals from a Slag Using a Multi

Ferrochrome recovery from slag fines Slag/metal/sand slimes This material is the classifier fines from Company A (Phase II expansion plant) in South Africa. The feed sample with a top size of 0.3mm was tested as received using the Yang jig pilot plant unit. The sample was also tested after screening to remove +0.15mmparticles.


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Jigging

Resource Recovery Suitable for a variety of slag types, our material segregation process reduces the volume in the disposal site Used to recover ferroalloys (FeCr, FeMn, SiMn, FeSi) from historical ferroalloy slag dumps, our jigging process makes use of a crushing and jigging plant.


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Siphiwe Molefe

Highlights: Increasing -1mm ferrochrome recovery through the replacement and optimisation of spirals, and Employed at the Metal Extraction Plant which is involved in the recovery of ferrochrome from slag by gravitational separation. Responsibilities: Plant maintenance, optimisation, production, safety, cost of production, reports. Projects


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Production of Ferro

Jul 10, 2018This means less Cr2O3 losses to the slag. Cr recovery mainly depends on reducibility of the chromite ore. From the input Cr to the furnace, other than recovered Cr to ferro-alloy, the balance mainly reports to slag and some to furnace dust. In case of hard and dense ore, the dust portion is low, but depending on ore reducibility and its size


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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 extract is separated with fly ash based zeolite which has 3000 mmol/gram and it can be regenerated to recover chromium. REFERENCES 1.


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Potential Toxic Effects of Chromium, Chromite Mining and

Smelting also produces Cr-VI contaminated slag, with estimated total chromium contents of 2 to 12%. The discovery that dry pulverizing of slag and ore converts Cr-III to Cr-VI may be very important during steps such as ferrochrome recovery from slag and end-uses of crushed slag.


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Metal Recovery from Slag_manufacturer of mineral jig

Metal Recovery from Slag During smelting of ferroalloy by submerged arc furnace, a slag is generated containing between 5% and 12% recoverable metal depends on the type of alloy being manufactured. Forui Machinery Factory has 20 years experience in slag recycling.


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Production of Ferro

Jul 10, 2018This means less Cr2O3 losses to the slag. Cr recovery mainly depends on reducibility of the chromite ore. From the input Cr to the furnace, other than recovered Cr to ferro-alloy, the balance mainly reports to slag and some to furnace dust. In case of hard and dense ore, the dust portion is low, but depending on ore reducibility and its size


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SOUTH AFRICANFERROALLOYS HANDBOOK 2013

carbon ferrochrome, is produced in granulated form. Low Carbon Ferrochrome In the low-carbon process, charge chrome, quartzite and reductants are combined in a submerged arc furnace to produce ferro-silicon-chromium (FeSiCr) in a 'dry' or slag-free process. The ferro-silicon-chrome has a


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New spiral means better recoveries for ferrochrome

"Ferrochrome is not the only commodity that we have successfully tested," says Refentse Molehe, process engineer at Multotec. "We have even seen improved recovery in heavy minerals below 1 mm size, alluvial chrome, manganese slag and there is potential in industrial recycling."


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Exploring beneficial uses of ferrochrome slag: a case

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).


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(PDF) Implementation of industrial waste ferrochrome slag

Possible appli- FC, ferrochrome slag; HAC, high alumina cement. cations of present work include non-recovery coke ovens, boilers and reheating furnaces. varied from 0 to 10 wt.%. The batch composition of the castables is listed in Table 2.


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environmental affairs

Alternatively, the ferrochrome is granulated into a flowing stream of water. To improve total ferrochrome recovery while maintaining a high..quallty product, alloy recovery plants are utilised to recover the ferrochrome from the slag produced during the charge chrome process. The slag,


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Slag Atomising Technology: Unlocking Real Value

The current paper will examine the design and benefits of the Ecomaister-Hatch Slag Atomization Technology when applied to, for example, ferrochrome production slags. A business case is also examined utilizing a 200,000 tonne per year ferrochrome operation including a metal recovery


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Chrome Ores on Ferrochrome Smelting

production of ferrochrome in South Africa, the following conditions are used as major smelting parameters: 6% FeO in slag 12% Cr 2 O 3 in slag 45% SiO 2 in the 3-component slag of SiO 2-MgO-Al 2 O 3 8% carbon in metal 4% silicon in metal Slag temperature 1700 ⁰C Metal temperature 1600 ⁰C Chrome ores 2 Cr O 3 MgO FeO SiO 2 Al 2 O 3


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Munya Mugadza (PMP)

Project process metallurgical lead. For the two part project phase, the first part of which was the setting up and operation of a 60t/h rougher-scavenger-cleaner-recleaner spirals plant for treatment of the Boschfontein ferrochrome slag dump fines (historic Xstrata Operations) and retrofittable for PGM tailings washing and fine run of mine chrome ore washing for chrome fines recovery.


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Munya Mugadza (PMP)

Project process metallurgical lead. For the two part project phase, the first part of which was the setting up and operation of a 60t/h rougher-scavenger-cleaner-recleaner spirals plant for treatment of the Boschfontein ferrochrome slag dump fines (historic Xstrata Operations) and retrofittable for PGM tailings washing and fine run of mine chrome ore washing for chrome fines recovery.


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Ferrochrome slag Recovery Solution

Ferrochrome slag Recovery Solution. 1.What is the Ferrochrome slag. Ferrochrome slag is a by-product from the production of ferrochrome, an essential component in stainless steel. There is a certain amount of ferrochrome alloy in the slag. Recycling the alloy in slag can not only reduce the waste of valuable resources, but also get rich returns. 2.


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