reduced ilmenite leaching

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  • SEPARATION OF TiOz FROM REDUCED ILMENITE BY …

    figure that in order to leach over 95% of the iron originally present in the reduced ilmenite, it will be necessary·to maintain a total residence time of 10 hours. However very little advantage is expected in going beyond 10 hours. On the same figure, results obtained earlier using batch leaching were plotted

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  • TiO2 nanoparticles prepared by hydrochloric acid leaching ...

    Trans. Nonferrous Met. Soc. China 22(2012) 1232 1238 TiO 2 nanoparticles prepared by hydrochloric acid leaching of mechanically activated and carbothermic reduced ilmenite TAO Tao 1 , CHEN Qiyuan 1 , HU Huiping 1 , YIN Zhoulan 1 , CHEN Ying 2 1.

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  • Becher process Wikipedia

    The Becher Process is an industrial process used to upgrade ilmenite to synthetic rutile.. The mineral, ilmenite, contains 5565% titanium as TiO 2, the rest being iron Becher process removes the iron oxide, leaving a residue of synthetic rutile, which is more than 90% TiO 2.

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  • Ilmenite Chlorination

    The ilmenite conversion process has been broken down into three general unit operations¬reduction, smelting, and leaching—as shown in figures 8, 9, and 10. To see what actual flowrates and energy requirements may be expected in a production plant, material and energy balance data from the to /h pilot plant were scaled to a basis ...

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  • A. K. M. B. Rashid's research works | Bangladesh ...

    Ilmenite separated from beach sands of Bangladesh was oxidized for 1 h at 950 °C and then reduced in charcoal for 4 h at 1050 °C. This was followed by leaching in 5% to 15% hydrochloric acid ...

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  • Leaching and kinetics studies on processing of AbuGhalaga ...

    (1) Smelting processes, where the iron part of the ilmenite is reduced and melted to separate the iron from titanium [13]. (2) Reduction of ilmenite to convert ferric iron partially to the ferrous form or completely to the metallic iron from followed by acid leaching [14].

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  • Microwaveassisted reduction and leaching process of ilmenite

    The applications of microwave heating for carbothermic reduction and acid leaching of ilmenite were presented. The experiment results show that the time needed for ilmenite concentrate reduction ...

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  • Direct Carbothermic Reduction of Weathered Ilmenite for ...

    Mar 15, 2019· The TG/DTA results indicated improved performance of sodium carbonate over lime within a temperature range of 1173 K to 1373 K. Under different reduction conditions in raising hearth furnace experiments, the leaching of reduced ilmenite in diluted hydrochloric acid ( pct concentration) produced different grades of synthetic rutile.

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  • Recovery TiO2 by leaching process of carbothermic reduced ...

    Abstract Ilmenite naturally occurred in iron titanate (FeTiO 3) separation of natural ilmenite into TiO 2 and Fe 2 O 3 need to be explored to gain the high purity separation product. A new combination method named of carbothermic reduction, acidicleaching and complexation by EDTA were proposed for separation TiO 2 from Ilmenite. Roasting of ilmenite was carried out at 950 °C for ...

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  • US3825419A Beneficiation of titaniferous ores Google ...

    during the beneficiation of titaniferous iron ores by leaching thereof in a vessel with about 20% liquid hydrochloric acid, the required heat is supplied by introducing about 20% hydrochloric acid vapor into the vessel as the sole heat exchange medium.

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  • Kinetics of leaching of oxidized and reduced ilmenite in ...

    Sep 01, 2006· Read "Kinetics of leaching of oxidized and reduced ilmenite in dilute hydrochloric acid solutions, International Journal of Mineral Processing" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

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  • Chlorination of reduced ilmenite concentrates and ...

    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 ...

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  • (PDF) Leaching and kinetics studies on processing of Abu ...

    The estimations of the reserves of ilmenite ore in Abu Acid leaching of ilmenite ore was carried out using 1000 cm3 Ghalaga area variable, ranging from 3 million tons three necked glass reactor provided with a reflux condenser (Holman,1956), Through 10 million ton (Moharram,1959), and a mechanical agitator with Tefloncoated stirring rod.

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  • (PDF) Hydrochloric acid leaching of a prereduced ...

    In the same way, sodium chloride assisted the leaching of a prereduced ilmenite and allowed Ramakrishna et al. w29x to obtain their synthetic rutile. These results make clear that prereduction is a key variable in the production of synthetic rutile from ilmenite, improving notably the leaching kinetics.

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  • TiO2 nanoparticles prepared by hydrochloric acid leaching ...

    TiO2 nanoparticles prepared by hydrochloric acid leaching of mechanically activated and carbothermic reduced ilmenite Article in Transactions of Nonferrous Metals Society of …

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  • Hydrochloric acid leaching of a prereduced Brazilian ...

    In the same way, sodium chloride assisted the leaching of a prereduced ilmenite and allowed Ramakrishna et al. to obtain their synthetic rutile. These results make clear that prereduction is a key variable in the production of synthetic rutile from ilmenite, improving notably the leaching kinetics.

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  • Production of titanium carbide from ilmenite

    stage after the leaching process, and the size of this agglomerate was µm with a crystallite size of nm.. Keywords: titanium carbide, ilmenite, carbothermal reduction synthesis, leaching, Gibbs ener gy Songklanakarin J. Sci. Technol. 30 (2), 239242, Mar. Apr. 2008 1. Introduction Ilmenite, with the chemical formula FeT iO 3, is an

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  • Effect of Sulphate Ions on Leaching of Ilmenite with ...

    the reduced ilmenite. The iron present in the ilmenite was analyzed by using AAS techniques. The leaching efficiency is calculated as: Leaching efficiency (%) = (Amount of FeO removed X 100)/ (Amount of FeO present in reduced ilmenite). Results and discussion Figure 1 shows the leaching efficiency of ilmenite in

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  • Sulfation Leaching Treatment ilmenite Concentrate Titanium ...

    The sources of the S in the iron product were the ilmenite, which contained wt pct S, and the carbon hearth lining, which contained wt pct S. Oxidation of the ilmenite before smelting could help decrease the S level in the iron to an acceptable level. Sulfation Leaching of Titanium Slag Background

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  • Kinetics of leaching of oxidized and reduced ilmenite in ...

    Ilmenite separated from beach sands of Bangladesh was oxidized for 1 h at 950 °C and then reduced in charcoal for 4 h at 1050 °C. This was followed by leaching in 5% to 15% hydrochloric acid ...

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  • Microwave Acid Leaching of Beneficiated Ilmenite for the ...

    Microwave Acid Leaching of Beneficiated Ilmenite for the Production of Syntehtic Rutile heating were controlled and monitored by a sensor provided in the digester. Rotating magnets driven by motors generated a rotating magnetic field below the microwave cavity. Stirring effect within the vessel was achieved by placing a magnetic spin bar.

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  • Upgrading ilmenite by an oxidationmagnetic separation ...

    mechanism of ilmenite by hydrochloric acid leaching. In this work, a oxidationmagnetic separationpressure leaching process was investigated to produce synthetic rutile from Yunnan ilmenite with high Mg content. The experimental parameters affecting the grade or …

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  • Chlorination of reduced ilmenite concentrates and ...

    Sep 14, 2011· Highlights Ilmenite concentrates were reduced to titanium oxycarbide or oxycarbonitride and metallic iron. Titanium oxycarbide and oxycarbonitride in reduced ilmenites were chlorinated at 235 °C. Iron was chlorinated at low temperature chlorination conditions. Iron was removed by leaching reduced ilmenites by aeration with NH 4 Cl catalyst. After iron removal, chlorination of titanium ...

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  • beneficiation of ilmenite by selective leaching

    Coal mining processing plant in Nigeria. This coal mining project is an open pit mine located in Nigeria, announced by mining company Western Goldfields that it has discovered 62,400,000 tonnes of proven reserves of coal deposits worth US billion which could be used for the generation of electric power...

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  • Leaching of ilmenite and preoxidized ilmenite to obtain ...

    (a) Iron removal (%) from leaching of standard and 700°C preoxidized ilmenite. (b) Titanium removal (%) from leaching of standard and 700°C preoxidized ilmenite. Leaching conditions are: 6 hours, 20wt% HCl, 105ºC with grams of iron particles. It is clear the improvement of iron removal when the mineral is oxidized, which reach

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  • US4097574A Process for producing a synthetic rutile from ...

    US4097574A US05/696,596 US69659676A US4097574A US 4097574 A US4097574 A US 4097574A US 69659676 A US69659676 A US 69659676A US 4097574 A US4097574 A US 4097574A Authority US United States Prior art keywords ilmenite iron method percent reduced Prior art date 19760616 Legal status (The legal status is an assumption and is not a legal conclusion.

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  • Aeration Leaching of Iron from Nitrided Malaysian Ilmenite ...

    PDF | In this study, aeration leaching process of iron (Fe) from titanium oxycarbonitride (TiOxCyNz) produced by carbothermal reduction and nitridation of Malaysian ilmenite, in ammonium chloride ...

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  • Kinetics of leaching of oxidized and reduced ilmenite in ...

    The leaching of reduced nonoxidized ilmenite progressed at a slower pace than the oxidized and reduced ilmenite, and the core of particles also reduced slowly than the surface as the leaching continued. Identification of the reaction mechanism. To identify the reaction mechanism of leaching, the socalled reduced time plots were used.

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  • Pressure leaching of reduced ilmenite: electrochemical ...

    Read "Pressure leaching of reduced ilmenite: electrochemical aspects, Hydrometallurgy" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

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  • Optimization H2so4 Concentration on the Leaching Process ...

    Ilmenite is reduced through aeration process with oxygen for 6 hours to enable the rust which is signed brownish colour, it is formed Fe 2 O 3. The leaching residue was using H 2 SO 4 solution with concentration variation of 6M, 8M, 10M, and 12M. Titanium bonded SO 4which is formed TiSO 4. Result powder of leaching was calcined by using arc

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  • US5885324A Method for the production of synthetic rutile ...

    A typical initiation of Stage 1 (10) of any leach run occurs as follows: any particular empty column is filled or partially filled to its overflow level with liquor from completion of a previous Stage 2 (11) leach, the reduced ilmenite is then introduced by adding the prescribed amount to the column with any overflow from the column ...

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  • US3967954A Preleaching or reduction treatment in the ...

    The purity of titanium dioxide obtained by the acid leaching of a titaniferous iron ore, such as ilmenite, is improved by heating the ore prior to acid leaching with a reducing agent mixture of (a) a carbonaceous reducing agent and/or hydrogen and (b) sulfur to convert and lower the ferric oxide contaminant content of the ore to acidsoluble ferrous oxide and ferrous sulfide.

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