Technology Innovations in the Smelting of Chromite Ore
The traditional chromite smelting technology involves charging the chromite ore into a submerged AC Electric Arc Furnace (Figure 1) and reductants (coke, coal and quartzite) added to reduce …
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One-step natural pyrite-assisted mechanochemical detoxification …
1220· Traditional wet and dry Chromite Ore Processing Residue (COPR) detoxification methods consume acid for pH adjustment and produce greenhouse gasses (CO …
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A cleaner method for preparation of chromium oxide from chromite …
21· To establish a cleaner production technology of chromium salt, the pressurized leaching process of chromite ore in 60 wt% NaOH solution, subsequent separation of a …
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Chromite ore beneficiation: prospects and challenges
11· Considering the tailing disposal problems of chromite gravity concentration plants, the research works of Amer and lbrahim (1996) on hydrometallurgical processing of low-grade …
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Chromite Sand Plant in China | Stone Crusher
AFS40-45 Chromite Sand from South Africa Material Chromite sand ,it’s main chemical composition is Cr2O3(chromic oxide), This kind of sand heating volume is stable , High …
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Chrome ore beneficiation challenges & …
201141· During the processing of chromium ores, chromite concentrate is obtained for the production of ferrochrome, and waste is also collected - tailings beneficiation. Fragment and sludge tailings
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Vedanta FACOR Achieves Sustainable Chromite Ore …
FACOR Aims to Improve Chromite Ore Processing. Traditional beneficiation methods, while improving the final product, came at a hefty price: low yield and high processing costs. FACOR needed a solution that could unlock the …
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Cr (VI) recovery from chromite ore processing residual using an
1115· An electrokinetic (EK) system improved by a bipolar membrane (BPM) (BPM-EK) was used to recycle hexavalent chromium (Cr(VI)) from the chromite ore processing …
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Pyrolysis Treatment of Chromite Ore Processing Residue by …
2016210· The pyrolysis treatment with biomass is a promising technology for the remediation of chromite-ore-processing residue (COPR). However, the mechanism of this …
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A cleaner method for preparation of chromium oxide from chromite …
21· To establish a cleaner production technology of chromium salt, the pressurized leaching process of chromite ore in 60 wt% NaOH solution, subsequent separation of a …
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Remediation of chromite ore processing residue by pyrolysis process
200961· Chromite ore processing residue (COPR) is a byproduct of the chromite ore high-temperature lime-based roasting process used to isolate and extract Cr(VI). Commercial …
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Cr (VI) recovery from chromite ore processing residual using an
1115· An electrokinetic (EK) system improved by a bipolar membrane (BPM) (BPM-EK) was used to recycle hexavalent chromium (Cr(VI)) from the chromite ore processing …
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Pyrolysis Treatment of Chromite Ore Processing Residue by …
2016210· The pyrolysis treatment with biomass is a promising technology for the remediation of chromite-ore-processing residue (COPR). However, the mechanism of this …
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Chromite processing technology
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Chromite
201611· Chromite (Cr) occurs exclusively in mafic and ultramafic igneous rocks (Papp and Lipin, 2006).Although some Cr-based minerals such as crocoite (PbCrO 4), vauquelinite (Pb 2 …
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Sulfite-Induced Release and Oxidation of Cr(III) in Reduced Chromite …
2025313· Reduced chromite ore processing residue (rCOPR) is vulnerable to the surrounding conditions in environments, which can induce the release and oxidation of Cr(III). …
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Characterization of chromite ore processing residue
This paper summarizes the characteristics of chromite ore processing residue (COPR) in terms of their chemical compositions, phases, and recycling potential of iron and chromium through …
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Chromium Processing | Stone Crusher
2019823· Chromium processing description from its geology mineral property to how to extract mineral from rock and placer deposit, related processing plant flow chart and layout design. Because chromite is weakly …
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Chromium Remediation or Release? Effect of Iron (II) Sulfate …
Chromite ore processing residue (COPR), derived from the so-called high lime processing of chromite ore, contains high levels of Cr(III) and Cr(VI) and has a pH between 11 and 12. …
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Recovery of chromium by calcium-roasting, sodium-roasting, …
20201020· In the KOH–KNO 3 –H 2 O system, the decomposition process of chromite ore was a typical solid–liquid reaction process. The reaction surface area and thicken of the …
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Extraction of Cr (VI) from chromite ore processing residue
202071· The effective extracting Cr(VI) from chromite ore processing residue (COPR) is the key to achieve COPR detoxification and recovery. We developed an effective method to …
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Sulfite-Induced Release and Oxidation of Cr(III) in Reduced Chromite …
2025313· Reduced chromite ore processing residue (rCOPR) is vulnerable to the surrounding conditions in environments, which can induce the release and oxidation of Cr(III). …
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Design and optimization of a spiral separator for enhanced chromite …
202521· Despite the advancements in spiral separator technology and the extensive research conducted to optimize their performance (Bulayani et al., 2024), prior studies have …
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Chromite | Stone Crusher
chromite, relatively hard, metallic, black oxide mineral of chromium and iron (FeCr 2 O 4) that is the chief commercial source of chromium.It is the principal member of the spinel series of …
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Carbothermic reduction roasting for processing of ferruginous chromite …
71· The chromite ore occurs as a spinel containing oxides of chromium, iron, magnesium and aluminium. Commercial chromite deposits are generally found in the …
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Long-term treatment issues with chromite ore processing residue …
A pugmill treatability study was conducted to remediate chromite ore processing residue (COPR) using ferrous sulfate heptahydrate (FeSO 4 ·7H 2 O) as a reductant. Two different types of …
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Long-term treatment issues with chromite ore processing residue …
A pugmill treatability study was conducted to remediate chromite ore processing residue (COPR) using ferrous sulfate heptahydrate (FeSO 4 ·7H 2 O) as a reductant. Two different types of …
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Optimizing Technological Parameters for Chromium Extraction …
2025522· DMPP’s processing technology involves conventional gravity separation operations: crushing, heavy media separation, jigging, and spiral separation. While these …
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A cleaner method for preparation of chromium oxide from chromite …
21· To establish a cleaner production technology of chromium salt, the pressurized leaching process of chromite ore in 60 wt% NaOH solution, subsequent separation of a …
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A clean and efficient leaching process for chromite ore
201461· In order to improve the chromate salts cleaner production technology, a pressure leaching process for chromite ore in 50 wt% KOH solution was studied for the first time and …
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