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ilimenite alkali roasting furnace

2020-02-28T06:02:58+00:00
  • Comparative study of alkali roasting and leaching of ...

    2016-10-01  Summary of roasting experiments of ilmenite and chromite ores using MOH = NaOH/KOH as alkali. A first set of alkali roasting experiments was carried out using NaOH and KOH, in which the roasting temperatures 400 °C, 700 °C and 1000 °C were investigated.

  • Cited by: 27
  • Alkaline roasting of ilmenite - ScienceDirect

    1970-04-01  Roasting ilmenite concentrates with alkali metal carbonates and nitrates at 860°C produced a series of MFeTi oxide phases (M = Na or K) which were readily interconvertible on adding alkali or ilmenite, as appropriate, and reroasting at 860°C.

  • Cited by: 6
  • (PDF) Alkali Reductive Roasting of Ilmenite Ore

    Alkali roasting of the ilmenite process, which is a pre-treatment of the hydrometallurgical process for obtaining high titanium yields, has been studied by several groups [22] [23][24][25 ...

  • Understanding the Interaction of Potassium Salts with an ...

    Ilmenite is a bench-mark oxygen carrier for chemical-looping combustion, a technique that can separate CO 2 from flue gases with minimal energy penalty. Different potassium salts were mixed with ilmenite to a concentration of 4 wt % potassium. The salts used were K 2 CO 3, K 2 SO 4, KCl, and KH 2 PO 4.

  • Reclamation of reactive metal oxides from complex minerals ...

    The effect of roasting with a mixture of different alkali salts was also studied by mixing carbonates, hydroxides and bicarbonates in variable proportions. In all the experiments, 10 g of the mixture was placed in an alumina crucible and roasted at 1000 °C for 2 hours in air inside a MoSi 2 resistance furnace.

  • Investigation of Molten Salt Phase Formation during Alkali ...

    The benefit of alkali roasting over existing processes is that it minimises waste and energy consumption compared with the current methods for the beneficiation of titaniferous minerals. Previous studies on the liquid phase formation during alkali roasting of titaniferous minerals were based on the use of Na2CO3, whereas this study focuses on the oxidative roasting of ilmenite with either NaOH ...

  • Alkali roasting of bomar ilmenite: rare earths recovery ...

    The oxidative alkali roasting transforms ilmenite mineral into water-insoluble alkali titanate and water-soluble ferrite. Ater roasting the insoluble alkali titanate is separated from rare- earth oxide mixture in colloidal form and water-soluble ferrite.

  • The effect of molten sodium titanate and carbonate salt ...

    The slagging, which involves smelting of ilmenite to produce a high-titania slag and iron byroduct, is the main process for beneficiation of ilmenite ores. The roasting of ilmenite via Becher process or roasting and acid leaching of ilmenite by Benelite process are also used for the production of synthetic rutile2.

  • Kinetics of Reaction of Roasting of Soda Ash and Ilmenite ...

    Keywords: Soda ash roasting, Ilmenite, Sodium titanate, Kinetic reaction. 1. Introduction Sodium titanates and peroxotitanates are inorganic ion exchangers that exhibit strong affinities towards a wide range of metals [1]. Elvington et al. [2] indicated that both sodium titanates and peroxotitanates have shown to be effective for the removal of a wide range of metal ions from neutral and ...

  • Sodium Titanates Formation by Roasting of Pellets or ...

    Alkaline metals and hydrogen titanates are of great interest for possible applications. The quali- ties of soda ash and Rosetta ilmenite ore concentrate pellets were investigated. The kinetic forma- tion of sodium titanate via roasting of soda ash and ilmenite pellets and powder was studied in the temperature range of 800˚Cto 900˚C.

  • Kinetics of Reaction of Roasting of Soda Ash and Ilmenite ...

    Keywords: Soda ash roasting, Ilmenite, Sodium titanate, Kinetic reaction. 1. Introduction Sodium titanates and peroxotitanates are inorganic ion exchangers that exhibit strong affinities towards a wide range of metals [1]. Elvington et al. [2] indicated that both sodium titanates and peroxotitanates have shown to be effective for the removal of a wide range of metal ions from neutral and ...

  • Alkali Reductive Roasting of Ilmenite Ore: Canadian ...

    AbstractReductive roasting of ilmenite ore by carbon in the presence of sodium carbonate was carried out at 1000–1200°C for periods of up to 180 min. Additions of sodium carbonate of up to 30 wt% of the ore enhanced the reduction efficiency. The maximum metallization obtained at 1200°C was about 85%, and the rest of the iron exists in the form of sodium-iron-titanates.

  • Alkali roasting of bomar ilmenite: rare earths recovery ...

    The oxidative alkali roasting transforms ilmenite mineral into water-insoluble alkali titanate and water-soluble ferrite. After roasting the insoluble alkali titanate is separated from rare-earth oxide mixture in colloidal form and water-soluble ferrite. Further leaching of alkali titanate is carried out with oxalic (0.3M) and ascorbic (0.01M) acid solution which removes the remaining Fe2 ...

  • Investigation of Molten Salt Phase Formation during Alkali ...

    The benefit of alkali roasting over existing processes is that it minimises waste and energy consumption compared with the current methods for the beneficiation of titaniferous minerals. Previous studies on the liquid phase formation during alkali roasting of titaniferous minerals were based on the use of Na2CO3, whereas this study focuses on the oxidative roasting of ilmenite with either NaOH ...

  • Alkali roasting of bomar ilmenite: rare earths recovery ...

    AbstractIn this work, the alkali roasting of ilmenite (FeTiO3) is presented as a process route for integrated beneficiation of the mineral for rutile-rich phase and rare earth oxides; the latter is released as a consequence of physical changes in the ilmenite matrix, during the water leaching after roasting. The oxidative alkali roasting transforms ilmenite mineral into water-insoluble alkali ...

  • Alkali roasting of bomar ilmenite: rare earths recovery ...

    2014-11-01  The oxidative alkali roasting transforms ilmenite mineral into water-insoluble alkali titanate and water-soluble ferrite. After roasting the insoluble alkali titanate is separated from rare-earth oxide mixture in colloidal form and water-soluble ferrite. Further leaching of alkali titanate is carried out with oxalic (0.3M) and ascorbic (0.01M) acid solution which removes the remaining Fe 2 ...

  • Preliminary investigations on alkali leaching kinetics of ...

    Preliminary investigations on alkali leaching kinetics of red sediment ilmenite slag. The present paper deals with soda ash roasting of red sediment ilmenite (47.03% TiO2) and leaching of obtained titanium rich slag with hydrochloric acid for preparation of synthetic rutile. The experimental conditions used for roasting are Na2CO3 to ilmenite ratio of 1: 1 at 1,223 K for 4 h. This soda ash ...

  • A Study on the Recovery of Titanium Dioxide from Blast ...

    Some researchers used the roasting method in order to produce titanium dioxide pigment. They purified ilmenite, titanium slag, and low-grade waste products from various processes -such as Bayer's process- utilizing sodium and potassium roasting, particularly NaOH and Na 2 CO 3 [10, 21, 23-25]. By roasting the slag, Na TiO 3 and Na 2

  • Sodium Titanates Formation by Roasting of Pellets or ...

    Lasheen [24] studied the process of soda ash roasting of titana slag product from Rosetta ilmenite, and reported that the optimum conditions used a Na 2 CO 3 /slag ratio of 0.55:1 and roasting temperature 850˚C for 0.5 hour duration period. In the present investigation, the kinetic reaction roasting of soda ash and ilmenite ore concentrate was evaluated.

  • processing of ilmenite - dekindervriend.nl

    Comparative study of alkali roasting and leaching of , Comparison of alkali roasting and leaching of chromite ores and titaniferous minerals was , In the Becher process, ilmenite is pre-oxidised in air to form .... More information; NASA Technical Reports Server (NTRS) - Space Plasma , Jan 01, 2007 We report here the first ion radiation processing study of ilmenite performed by in-situ means ...

  • The Alkali Roasting and Leaching of Ilmenite Minerals for ...

    The Alkali Roasting and Leaching of Ilmenite Minerals for the Extraction of High Purity Synthetic Rutile and Rare‐Earth Oxides. Animesh Jha. E-mail address: [email protected] Search for more papers by this author. Graham Cooke. Search for more papers by this author. Abhishek Lahiri ...

  • Alkali roasting of bomar ilmenite: rare earths recovery ...

    The oxidative alkali roasting transforms ilmenite mineral into water-insoluble alkali titanate and water-soluble ferrite. After roasting the insoluble alkali titanate is separated from rare-earth oxide mixture in colloidal form and water-soluble ferrite. Further leaching of alkali titanate is carried out with oxalic (0.3M) and ascorbic (0.01M) acid solution which removes the remaining Fe2 ...

  • Alkali roasting of bomar ilmenite: rare earths recovery ...

    Alkali roasting of bomar ilmenite: rare earths recovery and physico-chemical changes . By Sergio Sanchez-Segado, Abhishek Lahiri and Animesh Jha. Cite . BibTex; Full citation; Publisher: Walter de Gruyter GmbH. Year: 2014. DOI identifier: 10.1515/chem-2015-0033. OAI identifier: Provided by:

  • Preliminary investigations on alkali leaching kinetics of ...

    Preliminary investigations on alkali leaching kinetics of red sediment ilmenite slag. The present paper deals with soda ash roasting of red sediment ilmenite (47.03% TiO2) and leaching of obtained titanium rich slag with hydrochloric acid for preparation of synthetic rutile. The experimental conditions used for roasting are Na2CO3 to ilmenite ratio of 1: 1 at 1,223 K for 4 h. This soda ash ...

  • Influence of Ascorbate and Oxalic Acid for the Removal of ...

    Comparative study of alkali roasting and leaching of chromite ores and titaniferous minerals. Hydrometallurgy 2016, 165, 213-226. DOI: 10.1016/j.hydromet.2015.08.002. Tumula Laxmi, Rajalaxmi Mohapatra, Raghupatruni Bhima Rao. Preliminary investigations on alkali leaching kinetics of red sediment ilmenite slag.

  • Evaluation of Titania-Rich Slag Produced from Titaniferous ...

    Fluxless smelting of ilmenite to produce furnace slag as feedstock for the pigment industry is a well-established industrial practice with extensive installed smelting capacity globally.1,2,3,4Commercial ilmenite smelters produce two products, namely titania-rich slag and a pig iron by-product.

  • WO2002087770A1 - Upgrading ilmenite for titania production ...

    ilmenite roasting rutile magnetic roast Prior art date 2001-05-01 Application number PCT/AU2002/000538 Other languages French (fr) Other versions WO2002087770A8 (en Inventor Ian Edward Grey Original Assignee Commonwealth Scientific And Industrial Research Organisation Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a

  • Reclamation of reactive metal oxides from complex minerals ...

    alkali-based oxidative roasting and aqueous leaching for the extraction of mineral oxides is explained in the context of the original work of Le Chatelier in 1850, which was unsuccessful in the industrialization of bauxite processing for alumina extraction. However, much later in the 19th century the alkali-based oxi-

  • Solid state and smelting reduction of Panzhihua ilmenite ...

    Solid state and smelting reduction of ilmenite is an important process of upgrading ilmenite to high titania feedstock. In this study, an ilmenite concentrate supplied by Panzhihua Iron and Steel (Group) Co. was first reduced at solid state in an electric resistance furnace, followed by smelting reduction in an induction furnace. The effects of reducing agent (carbon) amount on the chemical ...

  • DC Smelting Plant - Outotec

    The flexibility of the Outotec DC furnace opens up opportunities for exploiting reserves that would have been considered economically unattractive using conventional smelting technology. Typical applications include fine chromites, ilmenite, low-grade laterites, and dust generated during steel production, especially stainless steel.

  • Hatch Developments in Furnace Design in Conjunction with ...

    The pyrometallurgical processing of ilmenite concentrate involved roasting in innovative three-stage fluid-bed calciners, followed by cooling in indirect fluidized coolers, and further upgrading via magnetic separators, and, finally, selective carbothermic reduction and smelting in two high-powered six- in-line, rectangular furnaces (Table I).

  • Influence of Ascorbate and Oxalic Acid for the Removal of ...

    Comparative study of alkali roasting and leaching of chromite ores and titaniferous minerals. Hydrometallurgy 2016, 165, 213-226. DOI: 10.1016/j.hydromet.2015.08.002. Tumula Laxmi, Rajalaxmi Mohapatra, Raghupatruni Bhima Rao. Preliminary investigations on alkali leaching kinetics of red sediment ilmenite slag.

  • [PDF] Ilmenite smelting: The basics Semantic Scholar

    Ilmenite smelting thus yields two products: a titania-rich slag, and molten iron. This is in contrast with the Becher process, where the iron is removed as a waste product. Ilmenite smelting as practised in South Africa (at Richards Bay Minerals, Namakwa Sands, and Exxaro KZN Sands) uses an electric furnace (AC or DC) to provide the required energy input. The two basic reactions in ilmenite ...

  • (PDF) Alkali Reductive Roasting of Ilmenite Ore Adel ...

    Academia.edu is a platform for academics to share research papers.

  • Reclamation of reactive metal oxides from complex minerals ...

    alkali-based oxidative roasting and aqueous leaching for the extraction of mineral oxides is explained in the context of the original work of Le Chatelier in 1850, which was unsuccessful in the industrialization of bauxite processing for alumina extraction. However, much later in the 19th century the alkali-based oxi-

  • kolkata ilmenite processing by slag procedure

    Aug 01, 2008 Soda ash roasting of titania slag product from Rosetta ilmenite Soda ash roasting of titania slag product from Rosetta ilmenite Lasheen, T.A. 2008-08-01 00:00:00 A soda ash roasting process for upgrading titania slag product of Rosetta ilmenite to a high grade titanium dioxide (TiO 2 ) is presented. The roasting process was carried out at moderate to high temperatures to yield a ...

  • DC Smelting Plant - Outotec

    The flexibility of the Outotec DC furnace opens up opportunities for exploiting reserves that would have been considered economically unattractive using conventional smelting technology. Typical applications include fine chromites, ilmenite, low-grade laterites, and dust generated during steel production, especially stainless steel.

  • WO2002087770A1 - Upgrading ilmenite for titania production ...

    ilmenite roasting rutile magnetic roast Prior art date 2001-05-01 Application number PCT/AU2002/000538 Other languages French (fr) Other versions WO2002087770A8 (en Inventor Ian Edward Grey Original Assignee Commonwealth Scientific And Industrial Research Organisation Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a

  • Beneficiation of an ilmenite waste stream containing ...

    Kumba RD included the fluidised bed roaster (that could roast ilmenite samples of 40g or less); the Linn-type furnace that could roast larger samples; the Frantz barrier magnetic separator; a Readings laboratory scale magnetic separator and a Carpco laboratory scale magnetic separator. To familiarise myself with the operation of the fluidised bed reactor and the Frantz separator I conducted ...

  • Mineralogical characterization and leaching behavior of ...

    leaching behavior of Nigerian ilmenite ore A. A. BABA 1,2, S ... The characterization and H2SO4 leaching behavior of a Nigerian ilmenite ore following mechanical activation and alkali roasting were investigated. The effects of NaOH/ore ratio, H 2SO4 concentration, leaching and roasting temperature on the Ti recovery from the milled ore were examined. The results show that mechanical activation ...

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