processing chromite ore flux material

Fusion of Chromite Ore Using Sodium Phosphate Salt

2021-4-5  In hydrometallurgy, fusion techniques are considered key in the processing of chromite ore. Salts containing easily ionized elements are often used as flux, which results in solutions with complicated matrices. A matrix correction approach was developed to remove sodium and phosphate ions from a solution obtained from the fusion of chromite using sodium phosphate salt as flux. The

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Fluxing of South African chromite ore with colemanite

2018-12-18  chromite smelting, while the UG2 seam is mined as a source of platinum group metals (PGMs). The ‘discard’ streams from UG2 ore processing have become a valuable raw material for ferrochromium producers, as predicted some 14 years ago (Cramer, Basson, Nelson, 2004).

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Processing of Low-Grade Chromite Ore for Ferroalloy ...

The low-grade siliceous chromite ore from Ghutrigaon, Odisha, India, containing ~ 16% Cr2O3, with Cr/Fe ratio of 1.97 and ~ 55% of SiO2, does not find any use in metallurgical industry and hence considered as waste. Mineralogical investigation indicates the presence of chromite and quartz as major minerals with minor fuchsite and kaolinite.

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v118n6a15 Fluxing of South African chromite ore with ...

2019-5-9  Chromite ores in South Africa originate mainly from the Bushveld Complex. Broadly, the MG1, MG2, and LG6 seams in the Complex are mined to produce feed for chromite smelting, while the UG2 Reef is mined as a source of platinum group metals (PGMs). The ‘discard’ streams from UG2 ore processing have become a valuable raw material for ferrochrome

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An Improved DC-Arc Process for Chromite Smelting

2012-2-7  Material Chromite ore 1 Chromite ore 2 Chromite ore 3 Anthracite Coal 1 Coal 2 Lime stone ... Five flowsheets processing 250kt chromite per annum were evaluated against a baseline of cold feed as follows: Option 1: Gas preheating of chromite and flux tranferred at

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Solidification/stabilization of chromite ore processing ...

2017-2-1  In the process of chromium salt production, large amount of chromite ore processing residues (COPR) are generated (Zhang et al., 2009, Brose and James, 2013, Kameswari et al., 2015). COPR comprises of water and acid soluble hexavalent chromium ions, which is highly mobile and its toxicity is far greater than relative stability of Cr 3+ ions.

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Chromite - ScienceDirect

2016-1-1  Therefore, the use of chromite ore-processing residue (COPR) as a fill material has been banned owing to its classification as a hazardous waste (Freese et al., 2014). Nevertheless, the old fill sites still pose a serious environmental and health concern because Cr continuously leaches from COPR over long periods of time (Freese et al., 2014).

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Chromium processing Britannica

2021-6-18  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,

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another method of extracting chromium from it ore

processing chromite ore flux material. Extraction of Chromium from Chromite Ore that mainly utilize coarse chromite, flux, and carbonaceous reductant feed materials. This process requires the lowest capital input, since minimal pre-processing of the feed materials is necessary.

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v118n6a15 Fluxing of South African chromite ore with ...

2019-5-9  Chromite ores in South Africa originate mainly from the Bushveld Complex. Broadly, the MG1, MG2, and LG6 seams in the Complex are mined to produce feed for chromite smelting, while the UG2 Reef is mined as a source of platinum group metals (PGMs). The ‘discard’ streams from UG2 ore processing have become a valuable raw material for ferrochrome

More

Fluxing of South African chromite ore with colemanite

2018-12-18  chromite smelting, while the UG2 seam is mined as a source of platinum group metals (PGMs). The ‘discard’ streams from UG2 ore processing have become a valuable raw material for ferrochromium producers, as predicted some 14 years ago (Cramer, Basson, Nelson, 2004).

More

Chromite Silica Carbon Flux - arbeitsvertrag-stuttgart.de

Processing Chromite Ore Flux Material. processing chromite ore flux material - addoor.bi. a typical flow sheet of a iron processing plant. flow sheet of processing chromite . process material input air emissions process wastes other wastes lead sintering lead ore iron silica limestone flux coke. Read More

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The disposition of chromite ore processing residue

2015-5-15  Chromite ore processing residue (COPR) produced during the manufacture of chromates and dichromates consists of high temperature oxides, brownmillerite (Ca 2 FeAlO 5) and periclase (MgO), possibly excess hydrated lime, and various impurities such as hydrogarnet, brucite and so on, including chromium in both its trivalent and hexavalent form ...

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An Improved DC-Arc Process for Chromite Smelting

2012-2-7  Material Chromite ore 1 Chromite ore 2 Chromite ore 3 Anthracite Coal 1 Coal 2 Lime stone Quartzite Moisture % 0.20 0.19 0.21 5.77 0.71 1.21 0.2 0.23 Volitiles % 11.4 25.7 26.4 43.4 Ash % 14.2 18.7 15 Chemical analysis % by mass MgO 7.0 6.4 7.1 0.11 0.09 0.24 0.66 0.025

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Chromium processing Britannica

2021-6-18  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

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Identification and Description of Mineral Processing ...

2016-3-27  Chromite ore is prepared for processing using several methods, depending on the ore source and the end use requirements. Course clean ore is hand sorted, while fine clean ore is gravity separated. Lumpy ore mixed with host rock may require heavy-media separation. If the chromite mineral occurs in fine grains intermixed with host rock, crushing,

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PRESMELTING OPERATIONS AGGLOMERATION OF

2015-2-27  chromite ore fines, which amount is 50% or more of the ore mined. However, questions of chromite ore fines agglomeration Donskoy Mining processing combine (MPC) to date remains current. Complexity Kazakhstan ore sintering kilns methods due to their high melting point {1500°C and above) caused a refractory ore phase (chrome spinel) and the host ...

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11.5 Refractory Manufacturing

2015-9-10  from the ore crushing, grinding, material drying and storage, and brick firing and finishing processes used in producing these types of refractories. Tables 11.5-4 and 11.5-5 present emission factors for emissions of filterable PM, filterable PM-10, hexavalent chromium, and total chromium from the drying and firing of chromite-magnesite ore.

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another method of extracting chromium from it ore

processing chromite ore flux material. Extraction of Chromium from Chromite Ore that mainly utilize coarse chromite, flux, and carbonaceous reductant feed materials. This process requires the lowest capital input, since minimal pre-processing of the feed materials is necessary.

More

v118n6a15 Fluxing of South African chromite ore with ...

2019-5-9  Chromite ores in South Africa originate mainly from the Bushveld Complex. Broadly, the MG1, MG2, and LG6 seams in the Complex are mined to produce feed for chromite smelting, while the UG2 Reef is mined as a source of platinum group metals (PGMs). The ‘discard’ streams from UG2 ore processing have become a valuable raw material for ferrochrome

More

Fluxing of South African chromite ore with colemanite

2018-12-18  chromite smelting, while the UG2 seam is mined as a source of platinum group metals (PGMs). The ‘discard’ streams from UG2 ore processing have become a valuable raw material for ferrochromium producers, as predicted some 14 years ago (Cramer, Basson, Nelson, 2004).

More

Chromite Silica Carbon Flux - arbeitsvertrag-stuttgart.de

Processing Chromite Ore Flux Material. processing chromite ore flux material - addoor.bi. a typical flow sheet of a iron processing plant. flow sheet of processing chromite . process material input air emissions process wastes other wastes lead sintering lead ore iron silica limestone flux coke. Read More

More

An Improved DC-Arc Process for Chromite Smelting

2012-2-7  Material Chromite ore 1 Chromite ore 2 Chromite ore 3 Anthracite Coal 1 Coal 2 Lime stone Quartzite Moisture % 0.20 0.19 0.21 5.77 0.71 1.21 0.2 0.23 Volitiles % 11.4 25.7 26.4 43.4 Ash % 14.2 18.7 15 Chemical analysis % by mass MgO 7.0 6.4 7.1 0.11 0.09 0.24 0.66 0.025

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beneficiation of iron ore production of ferrous sulphate

2017-10-31  processing chromite ore flux material. of chrome ore that is produced in South Africa is exported for smelting into ferrochrome which is then processed into stainless steel8 Zimbabwe Zimbabwe is historically the second largest location for chromite reserves, accounting for approximately 12 percent of the global chromite reserv Zimbabwe chrome ...

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Smelting characteristics of fluxed chromite sinter and

2016-3-18  In the present study, the direct sintering of chromite ore fines in the presence of coke breeze has been carried out, which does neither require further grinding of ore fines ( − 10 mm) nor binder. It uses suitable fluxes and coke breeze as heat source to raise temperature up to 1600°C and produces a semifused mass (20% molten phases) with ...

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Characterization of chromium-containing wastes and

2013-5-9  Chromite ore processing residue is always designated as highly alkaline material (Hausmann 1990; Geelhoed et al. 2002, 2003; Deakin et al. 2001; Whittleston et al. 2011). Hausmann analyzed 103 worldwide COPR samples, finding an average pH value of 12.0 with a standard deviation of 0.8 pH units. The minimum pH value was 8.1, and the maximum was ...

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Chromium Mining and Extraction Chromium Mining

2021-3-24  CHROMIUM : Chromium is the brittle, lustrous and hard chemical element that belongs to the group of spinel. Chromite grains are commonly found in large mafic intrusions and are also found in metamorphic rocks on the earth’s crust. Chromite, which is an iron chromium oxide (FeCr2O4) is the only ore present to produce the element chromium.

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CHAPTER-8 BENEFICIATION OF IRON ORES

2012-8-16  Therefore flux density can be expressed as B =1.togH The unit of flux density is gauss which is 1 gauss = 10-4 Vs/r2 One gauss of flux density is belongs to one oersted of filed intensity. When a paramagnetic material is placed in a magnetic field, the body temporarily turned

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Chromium Mining and Extraction Chromium Mining

2021-3-24  CHROMIUM : Chromium is the brittle, lustrous and hard chemical element that belongs to the group of spinel. Chromite grains are commonly found in large mafic intrusions and are also found in metamorphic rocks on the earth’s crust. Chromite, which is an iron chromium oxide (FeCr2O4) is the only ore present to produce the element chromium.

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Development of Chromite Sinter from Ultra-Fine

Based on the above calculation, the sintering of chromite ore fines with flux composition of 10.6% lime, 5.7% sand and 1.5% bentonite was conducted at 13% coke breeze with respect to chromite ore fines. It was also carried out in varying coke rate from 10–15% to identify the actual requirement of coke breeze.

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Method for direct use of chromite ore in the

A three-stage process for obtaining metallic Cr units insitu during the production of stainless steel. Raw chromite ore or a concentrate produced from chromite ore is mixed with a carbonaceous reductant and slagging agents are added to an iron bath (24) for smelting and refining in a refining reactor (10).

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END USE PLAN: CHROMITE ORE PYROXENITE

2015-11-12  Sukinda valley in Jajpur district, Odisha is well known for chromite ore deposits. About 97% of Chromite ore reserves of our country occur in the Sukinda valley, covering an area of approximately 200 Sq. km in the Jajpur district. Chromite is the only source of chromium which is widely used in metallurgical, refractory and in chemical industry.

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A Predictive Model for a high intensity (WHIMS) using ...

2020-2-28  Chromite ore in South Africa is mainly mined in the Bushveld complex situated in the central western region of the Highveld. Magnetic separation is the physical separation of discrete particles. Wet high-intensity magnetic separation (WHIMS) is commonly used in the gold, uranium, iron and chromite recovery industries. The WHIMS

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CHAPTER-8 BENEFICIATION OF IRON ORES

2012-8-16  Therefore flux density can be expressed as B =1.togH The unit of flux density is gauss which is 1 gauss = 10-4 Vs/r2 One gauss of flux density is belongs to one oersted of filed intensity. When a paramagnetic material is placed in a magnetic field, the body temporarily turned

More

Dielectric Properties of Silicothermic Reduction

2020-6-9  The microwave absorption properties of chromite and the feasibility of microwave reduction chromite have been discussed. The results show that as the density increases, the dielectric properties of materials increase. The dielectric properties are the best (the value around 4.2) when the silica ratio is 0.5. Microwave penetration depth shows that chromite and the mixture have good wave ...

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Processing Copper Ore Disadvantages - Soby

Processing Iron Ore Disadvantages. Processing Copper Ore DisadvantagesPlastic Recycling The Process of mining copper, How does copper ore mining affect the environment iron ore disadvantages HWM Stone Crusher is a summary from publication Mining and the environment while those of black coal, gold, iron ore, where developments may affect the.

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Extraction of Platinum Group Metals IntechOpen

2018-2-21  About 80% of the worlds’ reserves for platinum group metals (PGMs) are in South Africa’s Bushveld Igneous Complex. Processing of PGM involves comminution, flotation, smelting, converting, base metals refinery and precious metals refinery. Due to increasing chrome content in the feed and the challenges associated with operating high chrome feed, alternative routes to smelting of PGM are ...

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US20090071291A1 - Fire Assay Flux Composition for

This invention relates to a novel fire assay flux composition including, inter alia, a dispersant in the form of a source of phosphate; a primary reductant in the form of iron powder comprising particles having a particle size of 60 mesh and finer, at least one basic flux and at least one acidic flux. The fire assay flux composition is useful for the fire assay analysis of Platinum Group ...

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