High and New Industrial Zone, Kexue Revenue

Contact Us

MESSAGE

HOME  /  Bauxite Residue Leaching

Bauxite Residue Leaching


Bauxite residue (BR) is a hazardous industrial waste and also becomes an important reserve of rare earth elements (REE). An elegant process for achieving separation of REEs against silica from an iron-removed BR was established in this paper through selective leaching

Company Scale

scaleBg
  • Selectively Leaching The Ironremoved Bauxite Residues

    Selectively Leaching The Ironremoved Bauxite Residues

    Bauxite residue (BR) is a hazardous industrial waste and also becomes an important reserve of rare earth elements (REE). An elegant process for achieving separation of REEs against silica from an iron-removed BR was established in this paper through selective leaching

    Get Details
  • Leaching Of Rare Earths From Bauxite Residue Red Mud

    Leaching Of Rare Earths From Bauxite Residue Red Mud

    May 15, 2015 · Leaching experiments on Greek bauxite residue were performed with different acids at different concentrations, liquid-to-solid ratios, leaching times and temperatures. Extraction of the REEs was high for leaching in HCl solutions compared to other acids, but

    Get Details
  • PDF Leaching Optimization And Dissolution Behavior Of

    PDF Leaching Optimization And Dissolution Behavior Of

    Bauxite residue, a highly alkaline waste, contains largely soluble alkaline anions that results in serious environmental concerns. This paper focused on the leaching optimization, dissolution

    Get Details
  • Bauxite Residue Sinter Leach Process Phases Formation

    Bauxite Residue Sinter Leach Process Phases Formation

    The bauxite residue sinter leach process (BRSLP) is a potential method of recovering sodium hydroxide and alumina from bauxite residue. In this research, bauxite residue lime sinters were

    Get Details
  • Mining And Refining Bauxite Residue Management

    Mining And Refining Bauxite Residue Management

    Bauxite residue is a by-product of the Bayer Process. leaching of salts resulting from pH reduction must occur and drainage and disposal of saline leachate is essential. Supplementation of natural rainfall with irrigation may be needed to accelerate the process along with tillage and other physical treatments to improve structure and

    Get Details
  • Synthesis Of Scandium Phosphate After Peroxide Assisted

    Synthesis Of Scandium Phosphate After Peroxide Assisted

    Aug 14, 2019 · Synthesis of Scandium Phosphate after Peroxide Assisted Leaching of Iron Depleted Bauxite Residue (Red Mud) Slags Skip to main content Thank you for visiting nature.com.

    Get Details
  • Leaching Of Rare Earths From Bauxite Residue Red Mud

    Leaching Of Rare Earths From Bauxite Residue Red Mud

    Bauxite residue Lanthanides Leaching Rare earths Red mud Waste processing abstract Bauxite residue (or red mud) is a waste generated during the Bayer process of alumina production. Its storage is a spatial and environmental concern. Currently, there are no bulk applications of bauxite res-idue except for minor use in cements and ceramics.

    Get Details
  • Extraction Of Rare Earths From Bauxite Residue European

    Extraction Of Rare Earths From Bauxite Residue European

    Extraction of rare earths from bauxite residue Bauxite residue is a solid waste formed during the production of alumina in the Bayer process. Due to the big amount produced every year and to the large amount already stockpiled, the production of this residue

    Get Details
  • Technospheric Mining Of Rare Earth Elements From Bauxite

    Technospheric Mining Of Rare Earth Elements From Bauxite

    Nov 10, 2017 · Acid selection for REEs leaching from bauxite residue. To choose the best leaching agent and optimum operating conditions, a systematic investigation was performed using HNO 3, HCl, and H

    Get Details
  • Selective REE Recovery From Bauxite Residue Slags Near

    Selective REE Recovery From Bauxite Residue Slags Near

    Jan 28, 2019 · However, bauxite residue also contains valuable metals such as rare-earth elements (REEs), in minor but non-negligible concentration. In the recovery of these valuable metals from bauxite residue, direct acid leaching is a common applied method.

    Get Details
  • Leaching Of Rare Earths From Bauxite Residue Red Mud

    Leaching Of Rare Earths From Bauxite Residue Red Mud

    Bauxite residue except for minor use in cements and ceramics. Nonetheless, some types of bauxite residues are rich in rare-earth elements (REEs), and the scandium content in particular is of special interest. Leaching experiments on Greek bauxite residue were performed with different

    Get Details
  • Novel Approach For Enhanced Scandium And Titanium Leaching

    Novel Approach For Enhanced Scandium And Titanium Leaching

    Due to drawbacks of the direct leaching route from bauxite residue, such as silica gel formation and low selectivity towards these valuable metals, a novel leaching process based on oxidative

    Get Details
  • Occurrence Of Rare Earths In Postprocessed Bauxite Residue

    Occurrence Of Rare Earths In Postprocessed Bauxite Residue

    Mar 25, 2019 · Effect of Bauxite Residue’s Alkalinity on REEs Recovery by Acid Leaching. The alkalinity of bauxite residue represents an important factor for metal recovery by acid leaching as it may lead to a large acid consumption and makes the recovery of metals economically impractical.

    Get Details
  • Recovery Of Rare Earths And Other Valuable Metals From

    Recovery Of Rare Earths And Other Valuable Metals From

    Aug 11, 2016 · REEs can be recovered from bauxite residue by direct leaching or by smelting followed by leaching. The main disadvantages of direct acid leaching are the consumption of large amounts of acid for neutralization, the handling of large volumes of effluents, and the difficulty in using the bauxite residue after leaching.

    Get Details
  • LEACHING ASSESSMENT METHODOLOGIES FOR DISPOSAL

    LEACHING ASSESSMENT METHODOLOGIES FOR DISPOSAL

    Alumina Technology Roadmap - Bauxite Residue Research Project 4.3: Evaluation of a risk-based by-product assessment methodology Carried out under contract with the International Aluminium Institute LEACHING ASSESSMENT METHODOLOGIES FOR DISPOSAL AND USE OF BAUXITE RESIDUES

    Get Details
  • Selective Recovery Of Rare Earths From Bauxite Residue By

    Selective Recovery Of Rare Earths From Bauxite Residue By

    Selective recovery of rare earths from bauxite residue by combination of sulfation, roasting and leaching Chenna Rao Borraa, Jasper Mermansa, Bart Blanpainb, Yiannis Pontikesb, Koen Binnemansc, Tom Van Gervena,⇑ a Department of Chemical Engineering, KU Leuven, 3001 Leuven, Belgium bDepartment of Materials Engineering, KU Leuven, 3001 Leuven, Belgium cDepartment of Chemistry, KU Leuven, 3001

    Get Details
  • ARTICLE Addressing The Challenge Of Bauxite Residue

    ARTICLE Addressing The Challenge Of Bauxite Residue

    Mar 11, 2019 · Harato, T., P, Smith, and E. Oraby, “Recovery of Soda from Bauxite Residue by Acid Leaching and Electrochemical Processing,” Proceedings of the 9th International Alumina Quality Workshop, Perth, WA, 2012, 193-201.

    Get Details
  • A Mineralogical Assessment On Residues After Acidic

    A Mineralogical Assessment On Residues After Acidic

    A Mineralogical Assessment on Residues after Acidic Leaching of Bauxite Residue (Red Mud) for Titanium Recovery Gözde Alkan 1,*, Claudia Schier 1, Lars Gronen 2, Srecko Stopic 1 and Bernd Friedrich 1 1 IME-Process Metallurgy and Metal Recycling, RWTH Aachen University, Intzestraße 3,

    Get Details
  • Extraction Process Of Aluminium From Bauxite Ore

    Extraction Process Of Aluminium From Bauxite Ore

    The separation of the alumina from the impurities in the bauxite ore is usually accomplished by the Bayer Process. In this process the ground bauxite is leached with caustic soda (NaOH) to produce soluble sodium aluminate (NaAlO2), leaving the impurities in the insoluble residue.

    Get Details
  • Methods For Alkaline Recovery Of Aluminum From Bauxite

    Methods For Alkaline Recovery Of Aluminum From Bauxite

    Leaching of aluminum-bearing ores (mostly bauxite) with sodium hydroxide solution. At this high pH value and elevated temperature and pressure, aluminum hydroxides from bauxite dissolve selectively as following Eq. 1 (in this case gibbsite), while most of the other compounds remain insoluble in the leaching or bauxite residue, the so-called

    Get Details
  • Selective REE Recovery From Bauxite Residue Slags

    Selective REE Recovery From Bauxite Residue Slags

    However, bauxite residue also contains valuable metals such as rare-earth elements (REEs), in minor but non-negligible concentration. In the recovery of these valuable metals from bauxite residue, direct acid leaching is a common applied method.

    Get Details
  • PilotPlant Investigation Of The Leaching Process For The

    PilotPlant Investigation Of The Leaching Process For The

    A pilot-plant process has been developed based on an innovative laboratory-scale method for the recovery of scandium that exists in economically interesting concentrations in red mud, the main byproduct of alumina production. This method includes acid leaching of the red mud pulp, ion-exchange separation of scandium and lanthanides from the co-leached main elements such as iron, and

    Get Details
  • A Study Of The Occurrence Of Selected RareEarth Elements

    A Study Of The Occurrence Of Selected RareEarth Elements

    Jan 22, 2019 · The treatment of bauxite residue considers our previous published process which involved the neutralization with CO 2, followed by leaching with H 2 SO 4. Neutralized bauxite residue resulted with larger aggregates than the untreated bauxite residue after making contact with CO 2 as the consequence of additional CaCO 3 formation.

    Get Details
  • Effect Of Temperature On Iron Leaching From Bauxite

    Effect Of Temperature On Iron Leaching From Bauxite

    Bauxite residue, as solid waste from alumina production, contains mainly hematite [Fe2O3]. Kinetic study of iron leaching of bauxite residue by diluted sulfuric acid at atmospheric pressure has been investigated. The results have been obtained as following: (i) Temperature play an important role in iron leaching from bauxite residue.

    Get Details
  • Ionometallurgical Leaching Process Of Bauxite Residue A

    Ionometallurgical Leaching Process Of Bauxite Residue A

    Ionometallurgical Leaching Process of Bauxite Residue: a Comparison between Hydrophilic and Hydrophobic Ionic Liquids. Chiara Bonomi 1, Panagiotis Davris 2, Efthymios Balomenos 3, Ioanna Giannopoulou4 and Dimitrios Panias 5. 1.

    Get Details
  • Selective REE Recovery From Bauxite Residue Slags

    Selective REE Recovery From Bauxite Residue Slags

    However, bauxite residue also contains valuable metals such as rare-earth elements (REEs), in minor but non-negligible concentration. In the recovery of these valuable metals from bauxite residue, direct acid leaching is a common applied method.

    Get Details
  • Behaviour Of Silica During Metal Recovery From Bauxite

    Behaviour Of Silica During Metal Recovery From Bauxite

    Bauxite residue (BR, also called red mud) represents an interesting source for major elements such as aluminium, iron and titanium, but also for rare-earth elements (REEs) [1]. Several methods based on direct leaching by acids have been reported for recovering valuable metals from bauxite residue [2–5].

    Get Details
  • In Situ Remediation Of Bauxite Residue By Sulfuric Acid

    In Situ Remediation Of Bauxite Residue By Sulfuric Acid

    In situ remediation of a bauxite residue by integrating a storage area with CSIROs soda recovery process was evaluated. The process consisted of the following steps: bauxite residue is neutralized with sulfuric acid; the slurry is separated into a neutralized residue and a leachate.

    Get Details
  • Synthesis Of Scandium Phosphate After Peroxide Assisted

    Synthesis Of Scandium Phosphate After Peroxide Assisted

    Bauxite residue was treated in an electric arc furnace (EAF) for Fe removal as well as slag conditioning with varying flux additions and various cooling conditions. 95% of iron recovery to the metal was achieved. Resulting slags were subjected to identical HO supported HSO leaching conditions at 75 °C.

    Get Details
  • Process Design Aspects For ScandiumSelective Leaching Of

    Process Design Aspects For ScandiumSelective Leaching Of

    Abstract: Aiming at the industrial scale development of a Scandium (Sc)-selective leaching process of Bauxite Residue (BR), a set of process design aspects has been investigated. The interpretation of experimental data for Sc leaching yield, with sulfuric acid as the leaching solvent, has shown

    Get Details
  • Methods For Alkaline Recovery Of Aluminum From Bauxite

    Methods For Alkaline Recovery Of Aluminum From Bauxite

    Leaching of aluminum-bearing ores (mostly bauxite) with sodium hydroxide solution. At this high pH value and elevated temperature and pressure, aluminum hydroxides from bauxite dissolve selectively as following Eq. 1 (in this case gibbsite), while most of the other compounds remain insoluble in the leaching or bauxite residue, the so-called

    Get Details
  • PilotPlant Investigation Of The Leaching Process For The

    PilotPlant Investigation Of The Leaching Process For The

    A pilot-plant process has been developed based on an innovative laboratory-scale method for the recovery of scandium that exists in economically interesting concentrations in red mud, the main byproduct of alumina production. This method includes acid leaching of the red mud pulp, ion-exchange separation of scandium and lanthanides from the co-leached main elements such as iron, and

    Get Details
  • Leaching Of Copper And Nickel In Soilwater Systems

    Leaching Of Copper And Nickel In Soilwater Systems

    Mar 12, 2015 · Leaching of copper and nickel in soil-water systems contaminated by bauxite residue (red mud) from Ajka, Hungary: the importance of soil organic matter Cindy L. Lockwood , Douglas I. Stewart , Robert J. G. Mortimer , William M. Mayes , Adam P. Jarvis , Katalin Gruiz , and Ian T. Burke

    Get Details
  • Process Design Aspects For ScandiumSelective Leaching Of

    Process Design Aspects For ScandiumSelective Leaching Of

    Aiming at the industrial scale development of a Scandium (Sc)-selective leaching process of Bauxite Residue (BR), a set of process design aspects has been investigated. The interpretation of experimental data for Sc leaching yield, with sulfuric acid as the leaching solvent, has shown significant impact from acid feed concentration, mixing time, liquid to solids ratio (L/S), and number of

    Get Details
  • Carbothermic Reduction Of Bauxite Residue For Iron

    Carbothermic Reduction Of Bauxite Residue For Iron

    Leaching of untreated bauxite residue at 270C (7 g material/30 ml), and then increasing -280 ° solid-to-liquid ratio (140g material/850 mL) to either 170, 200 or 250 C for 120 min. ° Aluminium was recovered up to 72% with addition of calcium under Ca/Si ratio of 2.5, 120

    Get Details
  • Effects Of Leaching On The Chemical And Physical

    Effects Of Leaching On The Chemical And Physical

    Following leaching, a tension of 17 kPa was applied to each column for 10 minutes to remove excess water. This process . Effects of Leaching on the Chemical and Physical Properties of Bauxite Residue Mud and Sand . International Journal of Environmental Science and Development, Vol. 9, No. 12, December 2018 doi: 10.18178/ijesd.2018.9.12.1132 375

    Get Details
  • PDF In Situ Remediation Of Bauxite Residue By Sulfuric

    PDF In Situ Remediation Of Bauxite Residue By Sulfuric

    In situ remediation of a bauxite residue by integrating a storage area with CSIROs soda recovery process was evaluated. The process consisted of the following steps: bauxite residue is neutralized with sulfuric acid; the slurry is separated into

    Get Details

Related Post