In this project, chromite tailings from Western Limb of the South African Bushveld Igneous Complex (BIC) was characterised with the objective of recovering fine and ultrafine …
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— 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 Cu[CrO 4][PO 4]), uvarovite (Ca 3 Cr 2 [SiO 4] 3), and merumite (4(Cr,Al) 2 O 3 ·3H 2 O) are well known, chromite (FeCr 2 O 4) is the only one that is a …
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— Chromate ore process residues (COPR) were generated by the process of roasting chromite ore at approximately 1200°C to oxidize the trivalent Cr in the chromite ore to the hexavalent state with ...
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Semantic Scholar extracted view of "Studies on flocculation characteristics of chromite's ore process tailing: Effect of flocculants ionicity and molecular mass" by R. K. Dwari et al. Skip to search form Skip to main content Skip to account menu. Semantic Scholar's Logo. Search 217,369,726 papers from all fields of science ...
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CHROME ORE, CHROMITE ORE, IRON CHROMITE; CHROME SAND CHROMOX; ChromeCAST; 04/2014 Section II: Composition Chemical Name: CAS # Percent Chrome Ore (Cr2FeO4) or Cr2O3 100 Section III: Health Hazard Data ... slurry) N/A Boiling Point: N/A Vapor Pressure:
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Batch tests were conducted to assess the potential use of ferrous sulfate and calcium polysulfide for the remediation of chromite ore processing residue (COPR). The …
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— 1. Introduction. Chromate production from chromite ore is an important metallurgical process but is also a source of major pollution. In the traditional chromate production process, chromite ore is calcined with sodium carbonate at 1200 °C in a rotary kiln with the addition of limestone and dolomite.Due to the poor mass transfer efficiency …
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The value of the chromite ore is indeed dictated in the market by its iron, as well as its chromium content. ... Fe and enrichment ratios are observed for the higher slurry flow rate of 2.3 m 3 /h ...
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The chrome-bearing ore is hauled to the plant, scrubbed and screened before feeding the minus 1 mm fraction into spirals. The plus 1 mm size fraction is then discarded even though it contains liberated and recoverable Cr 2 O 3. The MG (Middle Group) and LG (Lower Group) chromite seams in South Africa are generally
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— The chromium-containing slurry tailings were heat-treated at 1100 °C, sintered with ammonium sulfate, water and sulfuric acid in a defined ratio at 300 °C, and then the resulting sinter was ...
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— The reactor was loaded with 75 g chromite ore, 353 g analytical grade KOH (mass ratio of alkali-to-ore is 4:1), and an amount of ultra-pure water. Subsequently, the autoclave was sealed and stirred to keep the slurry suspended during the experiment.
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— Consequently, a complete cleaner and shorter preparation route from chromite ore to Cr 2 O 3 was achieved by integrating three processes: the pressure oxidative leaching of chromite ore, the hydrothermal reduction of the Na 2 CrO 4 aqueous solution, and the thermal decomposition of CrOOH. The new method achieves the high …
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— The raw chrome ore is the tailings after floating separation of platinum and palladium, and the grade of Cr2O3 is relatively high. 【X-ray diffraction analysis】 The main mineral ores in the chrome sample are chromite, enstatite, anorthite, hopfnerite, diopside, albite, biotite, etc.. 【Physical analysis】 The metallic minerals in the chrome samples …
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The value of the chromite ore is indeed dictated in the market by its iron, as well as its chromium content. In the present study, a chromite concentrate was reprocessed by gravity (spiral concentrator) and magnetic separation to enhance the chromium‐to‐iron ratio. ... We also attempted to beneficiate the ultrafine chromite using wet ...
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A process mineralogical study based on three texturally and mineralogically different chromite-bearing ore types at the Nkomati nickel mine was undertaken, with focus on chromite. Chromite is a by-product of the Ni-Cu-Co-PGE ore at Nkomati Nickel ... A slurry was made up to 35% solids by adding a further 1.36 L of water. The flotation reagents ...
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— How to determine the chrome ore concentrating method and select the right chrome mining equipment is closely related to the physical and chemical properties of chromium ore. Because chromite is weakly magnetic, the technology of purifying chromium ore with high-intensity magnetic separation has been very mature with the development …
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The exploration results of manmade residues retreatment – slurry tailings of chromite ore enrichment of Donskoi Ore Mining and Processing Plant of the Republic of Kazakhstan are performed in the ...
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— feed slurry tank (100-litres cap acity) was attached with a stirrer to keep the solids in uniform . suspension throughout the test pr ogramme. ... Chromite ore processing tailing, a solid waste ...
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Star Trace Pvt Ltd.'s Agitation tank is the necessary equipment that regularly mixes the drugs and slurry, increases pharmaceutical drug reactions. Toggle navigation Star Trace Pvt Ltd Home
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— The spiral chute is a highly efficient gravity separation equipment that uses the inertial centrifugal force generated by the slurry in the spiral rotation motion to separate the light and heavy minerals. It is widely used in iron ore, ilmenite, chromite, tantalum and niobium ore beneficiation plants. It is made of special materials and is durable.
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— 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 the results were presented in this manuscript.It was found out that the chromium extraction rate increased significantly with the increase of temperature and oxygen …
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The exploration results of manmade residues retreatment – slurry tailings of chromite ore enrichment of Donskoi Ore Mining and Processing Plant of the Republic of Kazakhstan are performed in the ...
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— The present investigation aimed to understand dewatering amenability of the tailing slurry generated during the beneficiation of chromite ore. The tailing includes mainly ultrafine particles with a …
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— This ore began to show chromite liberation around 20 mesh and was nearly liberated at 65 mesh. ... The results showed that as the slurry flowed down the assembly, the chromite was collected in the concentrate in each successive stage; however, only low recoveries and concentrate grades were achieved. The minus 28-mesh test did produce …
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— The chromite ore beneficiation plants are present in this region. The beneficiation plants majorly consist of comminution to physically liberate the minerals …
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— Sub-grade chromite ore with Cr 2 O 3 of about 38.5% of Sukinda region of India, can be upgraded to a marketable chrome concentrate of 53–54% Cr 2 O 3 with a recovery of about 58–60% and tailing loss of around 14–16.39% of Cr 2 O 3, by using …
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— Naturally, affect the slurry interfacial chemistry and the chromite stability behaviour [32]. ... High resolution SEM images of chromite ore process tailings (a) tailing particulates, poorly crystallised with individual crystallite, nanoislands, nano islands crystallite on the extensive basal surface (b) multiple steps in the edge, broken edges ...
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The value of the chromite ore is indeed dictated in the market by its iron, as well as its chromium … Expand. 7 [PDF] 1 Excerpt; Save. ... ABSTRACT The present investigation aimed to understand dewatering amenability of the tailing slurry generated during the beneficiation of chromite ore.
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— Experimental and modeling studies were conducted to delineate the reaction progress of chromite ore processing residue (COPR) upon hydration and the roles of brownmillerite and calcium aluminum chromium oxide hydrates (CAC) in the scavenging of hexavalent chromium. A kinetic study was conducted by preparing slurry samples with …
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Keywords: chrome production slurry, environmental impact, chrome slurry beneficiation, concentration table, rich chrome concentrate. Cite this article as: Bondarenko I.V.; …
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