Beneficiation Of Ilmenite By Selective Leaching

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 ilmenite was enhanced, while the …

The traditional methods for producing synthetic rutile from ilmenite consist of the smelting, Becher and acid leaching processes. In the smelting process [5], the iron in ilmenite is reduced into metallic iron and melted at over 1600 °C for separation from the titanium-containing phases (the so-called titania slag).In the Becher process [6], [7], the iron in ilmenite is first …

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 ilmenite was enhanced, while the …

The reactivity of ilmenite ore during leaching with hydrochloric acid can be greatly enhanced by reduction in solution using metallic iron. Addition of a particular amount of iron powder after a certain time of reaction will reduce all the dissolved Fe 3+ to Fe 2+ and reduce a portion of the dissolved Ti 4+ to Ti 3+.As the leaching continues, any further dissolved Fe 3+ …

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. 1,258. PDF. 2 ...

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)

This review aims to deepen the understanding of ilmenite beneficiation and concentrate enrichment technology, and further promote the technological innovation of ilmenite resource efficient utilization. ... Similar increases in ilmenite flotability and selective separation have also been confirmed by subsequent studies (Parapari et al., 2016 ...

The salient findings on mining and physical beneficiation of different beach sand deposits containing monazite are reviewed. Monazite concentrate obtained are processed under different condition of time, temperature and concentration using acidic or alkaline solution. ... The higher iron content of ilmenite gives it a higher magnetic ...

This review aims to deepen the understanding of ilmenite beneficiation and concentrate enrichment technology, and further promote the technological innovation of …

The exploration and utilization of lunar resources have become the major objectives of future lunar exploration missions. The classified collection and processing of lunar minerals is the basic prerequisite for the in-situ exploration and utilization of lunar resources. In this study, we propose a scheme for in-situ separation of magnetic minerals from lunar soils …

Rutile (TiO2) is heavily used in pigments and colorants, and the most abundant source of rutile is ilmenite. Upon oxidation of ilmenite, rutile can be formed with modest energy consumption; furthermore, after leaching, only a few byproducts are formed. Unfortunately, one drawback is the necessarily long oxidative process of typically used methods. In this study, we …

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 …

In this work, a complete beneficiation technical route combining physical and chemical methods, namely a roasting-flotation-leaching scheme, is proposed to produce a qualified grade Ti-concentrate from altered Vanadium titanomagnetite (VTM) ore. Based on the character of the ore sample, it is recommended to recover the Ti-bearing minerals, ilmenite …

The present study focuses on the processing of a poly-mineralized concentrate attained from a physical beneficiation of process applied to high grade pegmatitic rock sample of Gabal El- Aurf area. The concentrate contains significant amounts of niobium (Nb), tantalum (Ta), titanium (Ti) and rare earth elements (REE) plus yttrium (Y) assaying 19.5, 2.5, 14.2 and …

The influence of acid surface dissolution as a pretreatment method on the improvement of ilmenite selective flotation from olivine-pyroxene was studied by carrying out the flotation experiments in micro and laboratory (flotation cell) scales. The microflotation experiments show that after surface dissolution, the flotation recovery of ilmenite improves from 73.5% to …

This paper describes a novel process for preparation of synthetic rutile using an intermediate, sulfated ilmenite from the sulfate TiO 2 process as the feedstock.The synthetic rutile can be obtained by selective thermal decomposition of the sulfated ilmenite, followed by targeted leaching for removal of various impurities.The results of the decomposition unit showed that …

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 ...

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 + 2FeC13 ...

Several methods have been investigated in the literature to upgrade ilmenite into synthetic rutile such as smelting (Murty et al. 2007), acid leaching (Mahmoud et al. 2004), ion-exchange ...

Chloridization Beneficiation of Ilmenite K. SWAMINATHAN and CH. SRIDHAR RAO ... pressure leaching with hydrochloric acid, 2 (2)oxidation/ reduction roasting followed by acid leaching, 3 (3) oxida- tion/reduction roasting followed by rusting and desliming, 4 ... ficiation of bauxite and for selective separation of desired

used [14-16]. Results of acid leaching of ilmenite have re-vealed variations inthe parameters of leaching [17-20].There-fore, itis usually necessary to work out the parameters best for leaching aparticular ilmenite ore. Only exploratory studies [6] have been conducted on the Nigerian ilmenite ore, there isstill no report on its composition ...

An ilmenite ore may be beneficiated by oxidation to yield a pseudobrookite-containing material, reduction of the oxidation product to give a material having at least 4% of its iron content in the ferric state, and leaching of the reduced material. Leaching is facilitated by the previous two steps. The beneficiate is suitable for chlorination under fluidised-bed reaction conditions to yield ...

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 ...

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 ...

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

The beneficiation methods of ilmenite ore mainly include gravity separation, magnetic separation, flotation, combined beneficiation, and so on. 1. Ilmenite gravity separation method.

The second-generation leaching process involves the coexistence of pool and heap leaching using 1 %–4% (NH 4) 2 SO 4 as the leaching agent. Heap leaching involves directly piling up mined ore and injecting the solution for leaching. Reagent consumption is reduced and soil environmental pollution is avoided owing to the low leachant concentration.

Transformation of ilmenite to different titanium based materials by strong and weak acid, and base digestion, is discussed. Effects of temperature, concentration of acid/base, …

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 …

The selective adsorption behavior of sodium oleate during the surface magnetization of ilmenite and titanaugite was investigated using magnetic separation test, …