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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 …
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 …
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 …
In this work, a complete beneficiation technical route combining physical and chemical methods, namely a roasting-flotation-leaching scheme, is proposed to …
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
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 ...
This paper examines the effectiveness of the method for producing synthetic rutile from ilmenite through pre-oxidation and reductive leaching of pre-oxidized ilmenite in hydrochloric acid. Thermodynamic simulation of the pre-oxidation of ilmenite concentrate was performed to evaluate the phases formed during the process as a function of …
Naturally available ilmenite mineral is being used as a starting material to produce titanium based products that have wide applications. Transformation of …
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.
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, …
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 …
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. …
DOI: 10.1016/J.HYDROMET.2003.08.001 Corpus ID: 95574087; Reductive leaching of ilmenite ore in hydrochloric acid for preparation of synthetic rutile @article{Mahmoud2004ReductiveLO, title={Reductive leaching of ilmenite ore in hydrochloric acid for preparation of synthetic rutile}, author={Mohamed H. H. Mahmoud …
The pilot scale aeration leaching experiments reveals that the reduced ilmenite can be upgraded to ∼86% of TiO 2 by adding 0.2% AQ-2, 6 to 1.5% NH 4 Cl …
(2008). Beneficiation of titaniferous ores by selective separation of iron oxide, impurities and rare earth oxides for the production of high grade synthetic rutile. Mineral Processing and Extractive Metallurgy: Vol. 117, No. 3, pp. 157-165.
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.
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 + …
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 …
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 ...
The utilization of laterite sulfuric acid leach residue has always been a challenge in the metallurgical industry. The current treatment involves deep-sea landfills, which leads to considerable environmental pollution and …
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.
Organic acid leaching has been used for tailings processing. Hernández et al. used 0.15 mol/L tartaric acid and 0.05 mol/L oxalic acid to extract nickel, cobalt and iron from Cuban nickel tailings. After 5 days of leaching at ambient temperature and pressure, approximately 70% of Ni, 80% of Co, and 30% of Fe were recovered.
Semantic Scholar extracted view of "Hydrometallurgical beneficiation of ilmenite" by Amanda Qinisile Vilakazi. ... (Fe) to corrosion. Direct leaching … Expand. 3 [PDF] Save. Titanium: An Overview of Resources and Production Methods. Mohammed El Khalloufi O. Drevelle G. Soucy. Materials Science, Engineering.
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 …
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 ...
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 …
Leaching of titanium and iron from ilmenite with hydrochloric acid – – Hydrochloric acid: 60–80 °C: 49 (for Ti) 54 (for Fe) (Tsuchida et al., 1982) Leaching of ilmenite in H 2 SO 4 system – S/L ratio of 1/100: titanium(III) ions, sulfur dioxide and 450–600 g/L H 2 SO 4: 85–100 °C: 75 and 90 (Zhang and Nicol, 2010)