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  • What is Slag? (with pictures) - wiseGEEK

    09/11/2020· Firstly, slag represents undesired impurities in the metals, which float to the top during the smelting process. Secondly, metals start to oxidize as they are smelted, and slag forms a protective crust of oxides on the top of the metal being smelted, protecting the liquid metal underneath.

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  • smelting | Definition & Facts | Britannica

    Other impurities, collectively called gangue, are removed by adding a flux with which they combine to form a slag. In modern copper smelting, a reverberatory furnace is used. Concentrated ore and a flux, commonly limestone, are charged into the top, and molten matte—a compound of copper, iron, and sulfur—and slag

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  • PRODUCTION, CHARACTERISTICS AND USE OF

    The temperature of the slag in tapping is 1700 °C and that of the ferrochrome 1600 °C. The smelting point of the slag has to be higher than the metal smelting point, because metal is heated up by using slag liquid phase. The optimum smelting point has been practically noted between 1680-1720 °C.

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  • (PDF) Recovery of chromium from ferrochrome slag

    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

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  • Smelting chrome ore - ScienceDirect

    01/06/1975· SMELTING REACTIONS In the smelting process the electric furnace is charged with the chrome ore, a carbon reducing agent, and a flux, usually quartz. Reaction of these materials produces slag and liquid ferrochrome, which are withdrawn from the hearth, and carbon monoxide, which rises through the descending charge.

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  • ferro chrome slag stockpiles in south africa

    EXISTENCE FORMS OF CHROME IN HIGH CARBON FERROCHROME SLAG high carbon ferrochrome slagchromeformThrough studying the existence forms of chrome in high carbon ferrochrome slags,we find out that four forms of chrome. Ferrochrome Smelting Council - Secretary, Parkrun South Africa. .slag to our stockpiles, which is eating up the.s ferrochrome smelting subsidiary in Sohar Port, . __360 3-· [Chrome

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  • CHARACTERIZATION OF FERROCHROME SMELTER SLAG AND ITS

    smelting process are also discussed inthis thesis. Slag samples from a ferrochrome smelter were analyzed using an XRF powder pellet analytical technique in contrast to thereptechnique used at the plant laboratory, to determine

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  • chrome smelting furnace, chrome smelting furnace Suppliers

    914 chrome smelting furnace products are offered for sale by suppliers on Alibaba, of which refractory accounts for 10%, industrial furnace accounts for 1%, and other non-metallic minerals & products accounts for 1%. A wide variety of chrome smelting furnace options are available to you, There are 115 suppliers who sells chrome smelting furnace on Alibaba, mainly located in Asia. The

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  • Effect of lime additions and bulk chromium content on

    When smelting chrome-bearing ore, the chrome can go to any of three phases: matte phase, spinel phase or glass phase. If it reports to the furnace matte phase it can lead to problems in the down stream processing. When chrome forms part of the spinel phase it forms a solid, refractory-like material which, to an extent, is an unwanted material inside the furnace. Lastly the chrome can report to

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  • ferro chrome slag stockpiles in south africa

    EXISTENCE FORMS OF CHROME IN HIGH CARBON FERROCHROME SLAG high carbon ferrochrome slagchromeformThrough studying the existence forms of chrome in high carbon ferrochrome slags,we find out that four forms of chrome. Ferrochrome Smelting Council - Secretary, Parkrun South Africa. .slag to our stockpiles, which is eating up the.s ferrochrome smelting subsidiary in Sohar Port, . __360 3-· [Chrome

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  • Ferrochrome Smelting In Zimbabwe - SAIMM

    The current installed chrome smelting arc furnaces in Zimbabwe are high-energy consumers (averaging 3.8 to 4.0MW/MT FeCr). The trend elsewhere has been to build increasingly larger, more efficient units with higher power density per unit of hearth area (kW/m 2) to optimize the considerable capital investment required and the huge running costs associated with ferrochrome production. These

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  • Smelting chrome ore - ScienceDirect

    01/06/1975· SMELTING REACTIONS In the smelting process the electric furnace is charged with the chrome ore, a carbon reducing agent, and a flux, usually quartz. Reaction of these materials produces slag and liquid ferrochrome, which are withdrawn from the hearth, and carbon monoxide, which rises through the descending charge. Recent review articles describe the process in greater detail

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  • EXPERIMENTAL INVESTIGATION AND MODELLING OF THE

    Effective extraction of copper from sulphide ores requires careful operation of a copper smelter, which in turn depends very much on the chemistry of the feed and the resulting slag and matte.

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  • Chromium processing | Britannica

    During the smelting of high-carbon or charge ferrochromium, slag and metal are tapped from the furnace into a ladle and separated by decanting or skimming.

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  • Magnesia Chrome Bricks for Copper Smelting Converter - RS

    The content of chromium oxide (Cr2O3) in the magnesia chrome bricks increases, which improves the anti-scouring performance of the magnesia chrome brick, and slows down the washing speed of the Magnesia Chrome Bricks for Copper Smelting Converter during use. At the same time, the porosity of DMGe-26 magnesia-chromium brick is significantly reduced, shortening the depth of slag erosion and

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  • Samancor Chrome Mines - Mining Technology | Mining News

    30/11/2020· Samancor currently operates three flexible smelting systems with capacity in excess of 1Mt/y of ferrochrome at three sites. The mines also feature six Submerged Arc Furnaces (SAF), a metal recovery plant, and a Pellet and Sintering Plant (PSP). Production. In 2000, Samancor Chrome produced 3.7Mt of chromite and 1.06Mt of ferrochrome. Output

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  • WO2011045755A1 - Ferrochrome alloy production - Google Patents

    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. In the process, slag is mixed with a molten ferrochrome

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  • Optimization of Process Parameter for Smelting and

    smelting and extent of the chromium in the Ferro-chrome. Slag sample were taken out from the furnace after cooling the furnace and sent for the chemical analysis to analyse the oxides present in the slag. The alloy and slag sample collected after smelting is shown in figure 3.3. From the chemical analysis of the Ferro-chrome sample it is observed that up to 60 % chromium have been recovered in

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  • Production of Ferro-Chrome – IspatGuru

    10/07/2018· Production of Ferro-Chrome. Ferro-chrome (Fe-Cr) is an alloy comprised of iron (Fe) and chromium (Cr) used primarily in the production of stainless steel. The ratio in which the two metals (Fe and Cr) are combined can vary, with the proportion of Cr ranging between 50 % and 70 %. Fe-Cr is frequently classified by the ratio of Cr to carbon (C) it contains. The vast majority of Fe-Cr produced is

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  • Chrome Ores on Ferrochrome Smelting

    of more ores and less quartzite, the smelting process produces more slag and requires more electric energy to heat and melt the slag. Keywords—ferrochrome production, ferroalloy process optimization, chrome ore I. INTRODUCTION igh carbon ferrochrome (HCFeCr) is produced by carbothermic reduction of chrome ore. Electric power is generally used to supply the energy required to carry out the

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slag in chrome smelting

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