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The fate of chromium impurities during acid sulphate digestion of ...
The fate of chromium impurities during acid sulphate digestion of ilmenite concentrates. International Journal of Mineral Processing, 2014. Mark Pownceby. Download Download PDF. Full PDF Package Download Full PDF Package. This Paper. A short summary of this paper. 37 Full PDFs related to this paper.
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Process for purifying a titanium-bearing material and upgrading ...
A process for removing impurities from an oxide of titanium-bearing material such as a titania slag by treating the material with SO 3 gas and subsequently leaching with a liquid. In particular a process for upgrading an ilmenite ore by preparing a titania slag therefrom and purifying the slag such that it may be used as a synthetic rutile suitable for use in a fluidized-bed chlorination ...
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Ore Based Metallics - International Iron Metallics Association
Ore Based Metallics (OBMs) are produced mainly by reduction of iron ore in blast furnaces (various forms of pig iron) and direct reduction plants (direct reduced iron and hot briquetted iron).Pig iron is also a by- or co-product from smelting of the titanium-bearing mineral ilmenite, the primary product being titanium dioxide slag (a feedstock material for titanium dioxide pigment manufacture).
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Ilmenite for pigment and metal production - OAText
Chlorination method. DuPont in USA [4] produces the pigment since 1950 by direct chlorination of ilmenite ore, separation of products by fractional distillation, then oxidation of TiCl4 (Figure 10): Figure 10: Simplified Du Pont process for pigment production from ilmenite. 2FeTiO3 + 7Cl2 + 3C → 2TiCl4 + 2FeCl3 + 3CO2.
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ilmenite | mineral | Britannica
ilmenite, iron-black, heavy, metallic oxide mineral, composed of iron and titanium oxide (FeTiO3), that is used as the major source of titanium. It forms solid-solution series with geikielite and pyrophanite in which magnesium and manganese, respectively, replace iron in the crystal structure. These three minerals are found disseminated or in veins in gabbro, diorite, or anorthosite, as in ...
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IRRRB, University to fund study of ilmenite mining potential
Feb 22, 2016 DULUTH, Minn. -- It's long been known that ilmenite - a high value iron-titanium oxide ore - is one of many valuable mineral deposits in northeastern Minnesota. The problem has been in developing a process that would remove impurities so it can be refined for the highest value applications.
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ilmenite magnetic separation - Nieuw Velserduin
Abstract purification of ilmenite from chromite impurities by a two step magnetic separation wherein magnetically susceptible chromite is magnetically removed followed by an oxidizing roasting of the ilmenite and a subsequent magnetic separation of ilmenite from the remaining chromite impurities to obtain an ilmenite with 1 or less chromite.
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Behavior of Impurities in Chlorination of Reduced Murray Basin Ilmenite
at much lower temperatures (200 - 350°C) [1]. In the low temperature chlorination, impurities either do not chlorinate or chlorinate very slowly [2]. Conversion of titania in synthetic rutile or ilmenite ores into titanium oxycarbide requires 1200 - 1400 °C [3] while synthesis of titanium oxycarbonitride can be implemented at 1150 - 1300 °C [4].
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Sulfation Leaching Treatment ilmenite Concentrate Titanium Slags
The sulfation-leaching technique involves selective conversion of the MgO, CaO, and MnO impurities in titanium slag to water-soluble forms by reaction with SO2-O2 mixtures in the presence of a sulfation promoter. After cooling, the sulfated slag is ground, and the ground material is leached in either water or dilute HCl solution to remove the ...
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SYNTHETIC RUTILE FROM ILMENITE - entrepreneurindia
Synthetic rutile (TiO2) is manufactured through the upgrading of ilmenite ore to remove impurities (mostly iron) and yield a feedstock for production of titanium tetrachloride through the chloride process. The chemical composition of synthetic rutile is similar to that of natural rutile, but differs in physical form.
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Ilmenite/Rutile - Alpha Thermal Process
Ilmenite is often beneficiated to produce synthetic rutile or titaniferous slag [Boateng, 2016]. Although numerous technologies are used to produce synthetic rutile, nearly all are based on either selective leaching or thermal reduction of iron and other impurities in ilmenite.
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Ilmenite - Cargo Handbook - the world's largest cargo transport ...
Ilmenite by itself is not a profitable iron ore as the titanium inhibits the smelting process. Ilmenite, hematite and corundum all have similar structures and belong to a more or less informal group called the Hematite Group with a general formula of A 2 O 3. The structure is composed of alternating layers of cations and oxygens.
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ELECTRO SMELTING OF ILMENITE FOR PRODUCTION OF TiO - POTENTIAL OF INDIA ...
TiO2 feedstocks with minimum impurities at competitive prices also necessitates ilmenite upgradation. As such, for Indian ilmenites with less than 55% TiO2 (barring Chavra and Ratnagiri deposits), the value addition by ilmenite upgradation to either synthetic rutile or TiO2 slag is the right approach for gainful utili-
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Selective separation of rare earths and impurities from ilmenite ore by ...
Selective separation of rare earths and impurities from ilmenite ore by addition of K+ and Al3+ ions Authors: Abhishek Lahiri Brunel University London Animesh Jha Abstract and Figures A new...
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Development of Extraction Method and Characterization of TiO2 Mineral ...
Titanium compound is generally in combination with iron as ilmenite (FeTiO 3), which so-called iron-titanium sand3,4. Ilmenite contains nearly 53% of TiO 2 (rutile) and is an essential mineral for the processing of titanium with silica impurities of about 10%, iron oxide, vanadium, niobium, tantalum, tin, chromium, and molybdenum compounds.
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A comparative study on the chloride effectiveness of synthetic rutile ...
Ilmenite(FeTiO 3) ore is a raw material for producing TiCl 4 through the chlorination method and the sulfuric acid reaction method. TiCl 4 is used as a raw material for producing metallic titanium ...
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Selective separation of rare earths and impurities from ilmenite ore by ...
The yttrium-- rare earth concentrates were obtained from fergusonite ore, gadolinite ore, and a by-product from an ion-exchange resin separation process. In each case the mixture in terms of oxide was composed of from 50 to 60% yttrium and 5 to 15% heavy rare earths with the light rare earth fraction constituting the remaining material.
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IRJET-Leaching and kinetics studies on processing of Abu-Ghalaga ...
Ilmenite ore is another type of naturally which utilises rutile (TiO2) as a raw material presently occurring titanium ore. It is an attractive alternative to enjoys more favourable economics and generates less waste naturally occurring rutile titanium ores because it is both cheaper to mine and more common [3]. Titanium minerals materials [11].
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[PDF] Ilmenite smelting: The basics | Semantic Scholar
Ilmenite has a nominal composition of FeO.TiO2. South African ilmenite is close to this nominal composition, with the main impurities being MnO, MgO, SiO2 and Al2O3 which contribute to about 3% of. 1 PDF View 1 excerpt, cites background Effects of mineralogical and textural characteristics of ilmenite concentrate on synthetic rutile production
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Selective separation of rare earths and impurities from ilmenite ore by ...
Ilmenite by virtue of being rich in iron often has small concentrations of Mn3O4as spinel. The presence of iron often leads to the incorporation of impurities such as Cr2O3, MgO, Al2O3and small amounts of CaO (Sibum, 1997). The presence of impurities is evident from the chemical analysis of both the fractions in Table 1.
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Ilmenite: An ore of titanium | Uses and Properties - Geology
Ilmenite is a black iron-titanium oxide with a chemical composition of FeTiO 3. Ilmenite is the primary ore of titanium, a metal needed to make a variety of high-performance alloys. Most of the ilmenite mined worldwide is used to manufacture titanium dioxide, TiO 2, an important pigment, whiting, and polishing abrasive. ADVERTISEMENT
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Chloride process - Wikipedia
Process chemistry. In this process, the feedstock is treated at 1000 °C with carbon and chlorine gas, giving titanium tetrachloride.Typical is the conversion starting from the ore ilmenite:. 2 FeTiO 3 + 7 Cl 2 + 6 C → 2 TiCl 4 + 2 FeCl 3 + 6 CO. The process is a variant of a carbothermic reaction, which exploits the reducing power of carbon.. Other impurities are converted to the respective ...
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Metals | Free Full-Text | The Manufacture of Synthetic Rutile by ... - MDPI
The rutile contains the highest concentration of Ti among the ores of Ti; however, the reserved area is limited. On the other hand, ilmenite is reserved at 94% all over the world. Therefore, ilmenite is more often used as a source for industrial Ti than rutile because of the ready availability of the mineral [1,2,3,4,5].
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Mineralogical Characterizations of Langkawi Ilmenite Ore for ...
in the ilmenite ore are formed due to geological weathering and leaching of ilmenite. Ilmenite ore also contains oxides of Si, Al, Ca, Mg, Mn, Cr, and other possible impurities. Oxides concentration of ilmenite depends on the minerals forming conditions. Normally rutile is used directly for titanium production[6]. However, ilmenite ores must be ...
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Wei Li Carbothermic Reduction Kinetics of Ilmenite Concentrates ...
tigated the reduction kinetics of natural ilmenite ore with carbon monoxide and found the reduction rate . W. Li et al.: CARBOTHERMIC REDUCTION KINETICS OF ILMENITE. CI&CEQ 19 (3) 423 −433 (2013) ... presence of impurities. The ilmenite deposit in Panzhihua region, Sichuan, China accounts for 35% of the titanium resource in the world, and ...
WhatsApp:+8617329420102Temas Successfully Produces High Purity Titanium Dioxide From Pilot ...
The overall impurities present in the final product ranged between 0.08% and 0.26%. ... The two-phase test program processed ~830 kg of ilmenite ore with ~6815 litres of PLS produced for the ...
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What is the main difference between ilmenite and ilmenite concentrate ...
Ilmenite generally refers to raw ore (that is, ore that has not been ore-dressed after mining and contains more impurities), namely crude titanium ore, and more professionally refers to titanium metatitanate (FeTiO3). Ilmenite is an oxide mineral of iron and titanium, and is the main ore for refining titanium.
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The physical properties of bitumen modified with ilmenite and bentonite ...
impurities. The Abu Ghalaga black ilmenite ore sample used in this work has chemical composition similar to that is published by Shahien et al. [18] and given in Table 2, because this sample represents a split from the sample analyzed by [18]. Similarly, the chemical composition of the used bentonite ore sample is
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Iron Removing From Titanium Slag for Synthetic Rutile Production
encouraged ilmenite upgrading by removing iron oxide and other impurities from the grain lattice, thus converting ilmenite into synthetic rutile for the chlorination process (El-Hazek et al., 2007; Mahmoud et al. 2004; Lasheen, 2009). There are several processes for the production of synthetic rutile from ilmenite and some of them were
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Pilot-Scale Demonstration of Ilmenite Processing Technology
impurities, such as magnesium oxide, in the crude ore and concentrate products. Previous research found that a large portion of the magnesium is associated with the chemical composition of the ilmenite and cannot be removed using conventional processing techniques. The purpose
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Hematite (The Bloodstone Ore) - Mineral Properties and Occurence
Hematite forms a solid solution series with ilmenite (known as titanohematite, hematite-ilmenite or HISS) at high temperatures. Associated Minerals, A discussion of hematite would not be complete without mentioning its frequent companions, limonite (rock composed of various iron oxides and hydro-oxides) and goethite (α-FeOOH).
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Titanium Oxide or Titania Pigment by Ilmenite
Titanium dioxide or titania pigment is prepared commercially from ilmenite, an iron-titanium oxide mineral, by the sulfate process. Ilmenite is digested with H2SO4 to yield a titanium sulfate solution. Subsequently, the solution is hydrolyzed to yield a hydrous titania precipitate that is calcined to produce pigment.
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A Review on the Recovery of Titanium Dioxide from Ilmenite Ores by ...
Temperature, time and acid concentration significantly affect the dissolution of titanium and impurities in ilmenite. The addition of either iron powder or chloride/sulfate salts affects significantly the leaching rate of ilmenite. Either HCl leaching followed by solvent extraction or alkaline leaching followed by hydrolysis-calcination is ...
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Production of titanium from ilmenite: a review (Technical Report ...
@article{osti_5267009, title = {Production of titanium from ilmenite: a review}, author = {Kohli, R.}, abstractNote = {The general principles for beneficiation of titanium ores are reviewed and the specific processes used in individual units in various countries are discussed. This is followed by a critical evaluation of various current and potential reduction methods for the production of ...
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NIOSHTIC-2 Publications Search - 10012045 - Process for Purifying a ...
In particular a process for upgrading an ilmenite ore by preparing a titania slag therefrom and purifying the slag such that it may be used as a synthetic rutile suitable for use in a fluidized-bed chlorination reactor to produce titanium tetrachloride that can be reoxidized to tio2.
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Ilmenite Mineral Data
General Ilmenite Information : Chemical Formula: Fe++TiO3 : Composition: Molecular Weight = 151.73 gm Titanium 31.56 % Ti 52.65 % TiO 2 Iron 36.81 % Fe 47.35 % FeO Oxygen 31.63 ... Picroilmenite - Mg-rich ilmenite : Titanic Iron Ore : Titanoferrite : Ilmenite Image: Images:
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PROCESSING ILMENITE ORE TO TiO2 PIGMENT - Google
- Google Patents, A hydrometallurgical process is provided for producing pigment-grade TiO2 from an ilmenite ore concentrate containing by weight a relatively high magnesium content ranging up to...
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Altair Nanotechnologies Provides Hydrochloride Titanium
Chromophore impurities are problematic in most of the world's known ilmenite ore reserves. It is costly and difficult to remove these impurities using the existing chloride or sulfate process.
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Purification of A Norwegian Ilmenite Ore to Produce Synthetic Rutile
The ilmenite is broken down to an iron-doped rutile with a hematite layer on top with most of the Fe migrating to the surface of the particles and in the cleavages as per equation 1 below. 2𝐹𝑒2+𝑇𝑖𝑂, 3(𝑠)+, 1 2, 𝑂2(𝑔)→ 𝐹𝑒2 3+𝑂, 3(𝑠)+2𝑇𝑖𝑂2(𝑠) (1),
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Investigation on Ilmenite Placer Ore as a Precursor for Synthetic ...
A number of processes exist to obtain synthetic rutile from ilmenite ores. These are sulphate, alkaline and chloride based. However, the HCl treatment route was chosen for this study. This process exhibits fast kinetics, excellent impurities removal and the potential to regenerate the acid makes it sustainable and environmentally friendly.
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