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Feed material was prepared from massive Allard Lake Ilmenite ore; and the effects of feed size, temperature, hydrochloric acid solids on the leaching rate were studied.
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For selective chlorination of FeO in ilmenite ore, it was found that the purity and yield of the synthetic rutile were determined by the input amounts of coke and chlorine.
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ABSTRACT Pretreatment of ilmenite are required to enhance leaching efficiency of ilmenite. Strong acid leaching is promising in terms of the purity of the produced TiO2, low energy consumption and waste management. The effect of several factors on the acid leaching kinetics in reported processes was reviewed. Temperature, time and acid …
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The leaching process of reduced ilmenite in the traditional vertical tank reactor (VR) is extremely inefficient. This study reports a new horizontal frame paddle reactor (HR) to enhance the oxidative leaching process. The oxidative leaching experiments and the hydraulic model experiments were carried out and compared in the …
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The acid leaching processes [8] consist of HCl and H 2 SO 4 leaching of ilmenite. Because the direct leaching of ilmenite is slow, various enhancement …
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From the foregoing it shows clearly that selective chlorination is capable of upgrading ilmenite to an acceptable further use in converting TiO2 into TIC14. 299 A recent Dupont patent (Cairns, 1969) deals with the preparation of titanium tetrachloride from ilmenite by the total chlorination at 850--1,050: 2FeO.TiO2 + 6C + 7C12 ~ 2TIC14 + …
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In this study, the production of synthetic rutile from ilmenite as a by-product from tin ore beneficiation through pre-oxidation and reductive leaching of the pre-oxidized ilmenite in hydrochloric ...
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sodium. The efficiency of selective separation is reported based on chemicals analysis of the materials derived after leaching. Keywords: Ilmenite, Soda ash roasting, Aeration leaching, Selective separation, Particle size Introduction Titanium and its alloys are an important family of light weight, high strength and high temperature alloys, which
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The beneficiation of titania (TiO 2) by sulfuric acid (H 2 SO 4) pressure leaching of Panzhihua ilmenite was investigated. The reaction temperature, H 2 SO 4 concentration, and concentration of ferrous ions (Fe 2 +) had significant effects on the enrichment of TiO 2.With increasing reaction temperatures, the dissolution of iron from …
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Selective separation of rare earths and impurities from ilmenite ore by addition of K+ and Al3+ ions ... The rate of leaching of iron from ilmenite (FeTiO3) in hydrochloric acid (HCl) solutions is greatly enhanced by the presence of ultraviolet (UV) light. ... This includes mineral beneficiation, leaching methods, … Expand. 1,255. PDF. …
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In this work, a complete beneficiation technical route combining physical and chemical methods, namely a roasting-flotation-leaching scheme, is proposed to …
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Moreover, effects of HF/ore ratio and leaching temperature on selective leaching behavior of Li, Al and Si were discussed. 90% of fluorine mainly existed as HF/F− in leaching solution, which can ...
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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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Ilmenite (TiO 2 > 52%) can be upgraded to synthetic rutile (TiO 2 > 88%) using a reduction and leaching process. Australian ilmenites (FeTiO 3) contain variable …
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Innovative methodology for separating copper and iron from Fe-Cu alloy residues by selective oxidation smelting ... This research was conducted to determine the content of TiO2 from ilmenite Lampung by the leaching method. ... In a paper presented at the Heavy Minerals Conference 2001 a laboratory scale investigation on the …
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leaching process is limited because HCl corrodes the production equip-ment, despite the advantages of the process including high efficiency, easy regeneration, and recyclability of HCl. The H 2SO 4 leaching process is less efficient in removing impurities from ilmenite than the HCl leaching process. However, the H 2SO 4 waste discharged from ...
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Pretreatment of ilmenite are required to enhance leaching efficiency of ilmenite. Strong acid leaching is promising in terms of the purity of the produced TiO2, low energy consumption and waste management. The effect of several factors on the acid leaching kinetics in reported processes was reviewed. Temperature, time and acid …
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Reference: A New Route of Roasting-Flotation-Leaching for the Beneficiation of Ti-Bearing Minerals from Altered Vanadium Titanomagnetite Selective flotation separation of ilmenite from titanaugite ...
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Table 1 presents basic information about ilmenite properties (rutile properties are also provided for a comparison), and Fig. 2 shows the crystal structure of ilmenite. The theoretical TiO 2 content in ilmenite is 52.7% and the specific gravity of ilmenite is high (ilmenite is considered to be a heavy mineral with the specific gravity of about 5). Fig. 2 …
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Flotation behaviors of ilmenite, titanaugite, and forsterite using sodium oleate as the collector ... 2015: Leaching kinetics of nickel extraction from hazardous waste by sulphuric acid and optimization dissolution conditions. M Gharabaghi, M Irannajad, AR Azadmehr. ... Selective leaching kinetics of low-grade calcareous phosphate ore in acetic ...
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In the beneficiation process of beach sand, ilmenite is removed by LIMS separation, and monazite is upgraded by HIMS separation. ... (20)), and then RECl 3 mixtures are obtained by water washing, double salt precipitation, transformation with alkali, and selective hydrochloric acid leaching (Fig. 13). 108 This technique has been …
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titanium. Leaching for the small pilot-scale testing was shown to be less efficient at 81% and 79% for iron and titanium, respectively. Estimated leaching and oxidation time was four hours and 50 hours, respectively. From the leach solution the counter-current solvent extraction of iron and titanium was completed.
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A kinetic study of the leaching of powdered ilmenite ore by hydrochloric acid has been investigated. The effects of (a) stirring speed ranging from 100 to 500 min −1, (b) particle size ranging from 20 to 74 μm, (c) acid concentration ranging from 7.2 to 9.6 M and (d) temperature ranging from 70 to 90°C on titanium and iron dissolution are reported.
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The rate of leaching of iron from ilmenite (FeTiO 3) in hydrochloric acid (HCl) solutions is greatly enhanced by the presence of ultraviolet (UV) light.The magnitude of the air purged UV light illuminated leaching rate is approximately twofold higher than the N 2 purged leaching rate under dark conditions. The enhanced rate is attributed to the …
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Pretreatment of ilmenite are required to enhance leaching efficiency of ilmenite. Strong acid leaching is promising in terms of the purity of the produced TiO2, …
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BENEFICIATION OF ILMENITE by Amanda Qinisile Vilakazi A dissertation submitted to meet the requirements for the degree of Master of Science In the faculty of Natural and Agricultural Sciences ... 6.3.1.1.1 Selective precipitation of …
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Rare-earth elements (REEs) are required for use in modern high-tech applications and demand has increased significantly over the last decade. 1 However, processing of REE ores poses potential hazards to human health and the environment due to challenges in the management of thorium (Th) and uranium (U) in waste products. 2 If …
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The acid leaching processes [8] consist of HCl and H 2 SO 4 leaching of ilmenite. Because the direct leaching of ilmenite is slow, various enhancement measures are employed; these include ...
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The results shown in Fig. 3 indicate that most of the iron fraction amenable to leaching from the ilmenite mineral grains is solubilized within 8 h. Thereafter, iron …
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centration, temperature, pulp density, leaching duration and size fraction of pre-oxidised ilmenite, on the iron and titanium dissolutions were also systematically studied. e experimental matrix ...
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