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Jan 26 2022Use of Ferrochrome Slags in the South African Context Authors Muhammed Salojee University of Pretoria South Africa thrives on its mining sector and has a large Ferrochrome mining
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Ferrochrome Slag Aggregate Afrigrit Ferrochrome Slag/Aggregate is a delisted material but may not be used in a downstream application prior to the approval of a Section 20 1 permit in terms of the Environment Conservation Act 1989 Act 73 of 1989 for the storage of Afrigrit Ferrochrome Slag/Aggregate and subject to the conditions therein
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Highest stability values are obtained from ferro chromes lag mixture As a result marble powder ferro chromes lag and glass powder wastes can be used as filler material in flexible pavements instead of crushed stone Keywords Asphalt Concrete Marble Wastes Ferrochrome Slag Wastes Glass Wastes
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Underwent an eighteen month structured Graduate Learnership program where I gained experience in raw materials planning and accounting ore preparation characterization and size optimization ferrochrome reduction process metallurgy in submerged arc furnaces alloy recovery from slag dumps and identifying windows for Process Improvements
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Μέθοδος αξιοποίησης της σκωρίας σιδηροχρωμίου που παράγεται από Ελληνικούς χρωμίτες σε παραγωγή πυριμάχων προϊόντων Η εφεύρεση αναφέρεται στη χρήση είτε συμπαγούς σκωρίας για την παρασκευή πορωδών μονωτικών
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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 from ladles and launders
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What is ferrochrome slag Ferrochrome slag is a waste material obtained from the manufacturing of high carbon ferrochromium alloy This slag is formed as a liquid at 1700 °C and its main components are SiO 2 Al 2 O 3 and MgO Additionally it consists of chrome ferrous/ferric oxides and CaO
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Covering all aspects of the types of ore washing concentration separation chemical processes and extraction to metal and their alloying to suit various applications sometimes for direct
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Estimating total mass of slag off gas and metal Determining total mass and quality requirement of reductor and flux for 1 ton of HC Ferrochrome Calculating heat balance based on chemical reaction and thermodynamic for high carbon ferrochrome production Determining total power required for producing 1 ton of high carbon… Objection
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For this purpose waste ferrochromium slag was used as aggregates in normal concretes and alkali activated mixtures with five different water/binder ratios Concretes with limestone and Portland cement were produced as references Mechanical properties of the concretes were determined Chloride permeability and resistivity tests were performed
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What is the composition of ferrochrome Overview Ferrochrome FeCr is an alloy of chromium and iron containing between 50% and 70% chromium The Producer od stainless steel tool steel are the largest consumer of ferrochrome and charge is chromium that confers upon stainless steel its remarkable corrosion resistance
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Ferrochrome by the reduction of chromite with coke in an electric arc furnace an alloy of chromium and iron generally containing 50 to 70% chromium by weight Silicon slag is a kind of scum that floats on the furnace in the process of smelting metal silicon The silicon slag contains a large amount of metal silicon and other elements
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Chemical composition of ferrochromium slag can be altered suitably for application in high temperature refractory ceramic application The use of ferrochromium slag in building and road making material will relieve some of the burden from natural resources KEYWORDS Crystal phase concrete environment Ferrochromium slag refractory Acknowledgment
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It is also used to add chromium to carbon steel FeCr from South Africa known as charge chrome and produced from a Cr containing ore with a low carbon content is most commonly used in stainless steel production
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Out of the different waste materials being generated the use of byproduct ferrochrome slag is significant in the production of monolithic refractories Ferrochrome slag is a waste material obtained from the manufacturing of high carbon ferrochromium alloy which is usually dumped
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Because of its constituents the FeCr slag has value and can be used for beneficial purposes however if not managed correctly it may have adverse impacts on health and the environment The South African National Waste Management Strategy advocates that waste is preferably re used recycled and recovered and disposed to land as a last resort
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Ferrochrome FeCr is an alloy of chrome and iron used in the production of stainless steel special steel and castings It is produced in an energy intensive process in electric furnaces from chrome ore iron ore and coal The largest producing countries of ferrochrome are South Africa Kazakhstan India and China
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Ferrochrome slag FS is another residue that is obtained as a solid waste by the smelting process during the production of stainless steel in Ferroalloy industries FS possesses the required engineering properties of coarse aggregates The possibility of using FA with lime for partial replacement of ordinary Portland cement OPC and FS for
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Smelting J5L steel grade measuring the slag raking temperature to be 1471 ℃ when the slag fluidity is not considered the actual slag raking slag fluidity is no conglomeration substance is generated taking a steel melting sample analyzing the carbon content to be % and the chromium content to be % supplementing high carbon ferrochrome when the chromium content of the
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What is ferrochrome slag Ferrochrome slag is a waste material obtained from the manufacturing of high carbon ferrochromium alloy This slag is formed as a liquid at 1700 °C and its main components are SiO 2 Al 2 O 3 and MgO Additionally it consists of chrome ferrous/ferric oxides and CaO
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High carbon ferrochrome is primarily used in the production of stainless steel More than 90% of high carbon ferrochrome is used in the production of stainless steel International Chromium Development Association [ICDA] 2024 The majority of the balance is used in the manufacturing of special steels including high chromium steels
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The corrosion protection ability of waste ferrochrome slag FeCr slag material was investigated FeCr slag has been milled for 4 hours in order to obtain nanostructured material As a nanomaterial this compound was used as prepared as well as a nanocomposite with polyaniline The nanocomposites were prepared by in situ polymerization technique
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On the one hand copper slag is nowadays a waste in copper pyrometallurgy despite the significant quantities of iron >40 wt % and copper 1 to 2 wt % On the other hand solar energy when properly concentrated offers great potential in high temperature processes Therefore concentrated solar power CSP could be used in the treatment of copper slag to transform fayalite into magnetite
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Ferrous slag is currently underutilized Although the construction industry does use some slag as an aggregate most is simply discarded However slag could be used to treat acid soils or acid mine drainage Doing so would both offset the cost of restoring abandoned mine areas as well as decrease steel manufacturers current waste footprint
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ferrochrome：n ； increase recovery of high carbon ferrochrome the effecting factors of chrome contents in slags were analysed and the preliminary test of adding waste magnesia brick and magnesite were 。
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The use of the waste delisting process a case study the management of ferrochrome slag as a construction product in South Africa
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IRJET International Research Journal of Engineering and Technology
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4 days agoThis study investigates the effects of different fiber additives on improving the design performance of PAMs where ferrochrome slag was used as aggregate Within the scope of the study Turkish Highways Technical Specification THTS principles were taken into account in designing the mixtures This study uses a uniform polymer added bitumen
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Findings Ferrochrome slag aggregates have excellent physical mechanical characteristics that conform to international specifications for use in road base construction The slag can be classified as non hazardous solid waste However in acidic environments some toxic elements may leach from the slag and pollute the environment
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Sep 23 2022Ferrochrome slag generated as the steel industry s by product has been broadly used in road sections with high traffic volumes in the Oulu region to replace natural aggregates The timing belt gears of a car in the Oulu region shows iron oxide dust and clear traces of abrasive wear Photo Mika Räisänen Geological Survey of Finland
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