Recovery Of Tungsten And Rhenium

  • Recovery of rhenium from aqueous mixed metal solutions by

    Recovery of rhenium from aqueous mixed metal solutions by

    When the pH of the rhenium–molybdenum solution (initial concentration 104 mM for each metal) was 63–125 and the irradiation time was 6 h, the rhenium was efficiently recovered in the precipitates (92–99%), and the selectivity for rhenium was high (the rhenium recovery ratios in the precipitates were 92–21 times those of molybdenum) High selectivity for rhenium was also observed at different …

  • Recovery and refining of rhenium, tungsten and molybdenum

    Recovery and refining of rhenium, tungsten and molybdenum

    The extensive use of rhenium in fabricating high temperature alloys, its use as a catalyst in a variety of applications, its high cost and its rarity are important incentives for developing techniques for its recovery

  • US4599222A - Recovery of tungsten and rhenium - Google Patents

    US4599222A - Recovery of tungsten and rhenium - Google Patents

    A process is disclosed for recovering tungsten and rhenium from a relatively impure tungsten and rhenium solution The process involves adjusting the pH of the solution to from about 90 to about 100 to precipitate impurities, and removing the impurities The purified solution is adjusted to a pH of from about 05 to about 70 with a mineral acid

  • US4584185A - Recovery of tungsten and rhenium - Google Patents

    US4584185A - Recovery of tungsten and rhenium - Google Patents

    A process is disclosed for recovering tungsten and rhenium from a tungsten and rhenium bearing solution The process involves adding sufficient hydrochloric acid to the solution to form a first precipitate containing essentially all of the tungsten and a first mother liquor having an acid concentration of at least about 125 normal, and

  • US Patent for Recovery of tungsten and rhenium Patent

    US Patent for Recovery of tungsten and rhenium Patent

    A process is disclosed for recovering tungsten and rhenium from a tungsten and rhenium source The process involves firing the source in an oxidizing atmosphere at a sufficient temperature for a sufficient time to convert the tungsten and rhenium to their respective oxides, to remove a portion of the rhenium as volatilized oxide, and to form a

  • Recovery of tungsten and rhenium - GTE Products Corporation

    Recovery of tungsten and rhenium - GTE Products Corporation

    08/07/1986 · A process is disclosed for recovering tungsten and rhenium from a relatively impure tungsten and rhenium solution The process involves adjusting the pH of the solution to from about 90 to about 100 to precipitate impurities, and removing the impurities

  • tungsten rhenium recovering - lab3dnl

    tungsten rhenium recovering - lab3dnl

    State of the art on the recovery of refractory metals from primary resources The mining and mines of refractory metals, tungsten, tantalum, molybdenum, niobium and rhenium in Europe and the world are described and the existing technologies of mining, mineral processing and extractive metallurgy (hydrometallurgy and pyrometallurgy) are …

  • US Patent for Recovery of tungsten and rhenium Patent

    US Patent for Recovery of tungsten and rhenium Patent

    A process is disclosed for recovering tungsten and rhenium from a tungsten and rhenium source The process involves firing the source in an oxidizing atmosphere at a sufficient temperature for a sufficient time to convert the tungsten and rhenium to their respective oxides, to remove a portion of the rhenium as volatilized oxide, and to form a

  • US Patent for Recovery of tungsten and rhenium Patent

    US Patent for Recovery of tungsten and rhenium Patent

    A process is disclosed for recovering tungsten and rhenium from a relatively impure tungsten and rhenium solution The process involves adjusting the pH of the solution to from about 90 to about 100 to precipitate impurities, and removing the impurities The purified solution is adjusted to a pH of from about 05 to about 70 with a mineral acid

  • Recovery of tungsten and rhenium - GTE Products Corporation

    Recovery of tungsten and rhenium - GTE Products Corporation

    08/07/1986 · More, particularly, it relates to a process for recovery of tungsten and rhenium from an impure solution by removing the tungsten from the solution as a solid with hexamine In a process for recovering the metal values from tungsten-rhenium alloy scrap, an alkaline solution containing sodium tungstate and sodium perrhenate is generally formed

  • Recovery of tungsten and rhenium - GTE Products Corporation

    Recovery of tungsten and rhenium - GTE Products Corporation

    22/04/1986 · A process is disclosed for recovering tungsten and rhenium from a tungsten and rhenium bearing solution The process involves adding sufficient hydrochloric acid to the solution to form a first precipitate containing essentially all of the tungsten and a first mother liquor having an acid concentration of at least about 125 normal

  • RECOVERY OF RHENIUM FROM TUNGSTEN-RHENIUM ALLOYS …

    RECOVERY OF RHENIUM FROM TUNGSTEN-RHENIUM ALLOYS …

    The US Department of Energy's Office of Scientific and Technical Information

  • The improvement of rhenium recovery technology from W-Re

    The improvement of rhenium recovery technology from W-Re

    It is considered, that the fundamentals of an improved technology of rhenium recovery in the form of perrhenic acid from binary W-Re alloys It is shown the desirability of avoiding the precipitation of metal in the form of potassium perrhenate A basic technological scheme of the Re recovery process is proposed It includes anodic dissolution of W-Re alloys, precipitation of calcium tungstate from the electrolyte …

  • Electrochemical recovery of rhenium from W–Re alloys in

    Electrochemical recovery of rhenium from W–Re alloys in

    A technological scheme is proposed for the recovery of rhenium from the wastes of a W–Re alloy in the form of perrhenic acid Keywords rhenium tungsten W–Re alloy wastes potassium perrhenate perrhenic acid anodic dissolution electrodialysis

  • State of the art on the recovery of refractory metals from

    State of the art on the recovery of refractory metals from

    refractory metals from primary resources Based on metal type the document is assigned into five chapters : Chapter 1 Based on metal type the document is assigned into five chapters : Chapter 1 Tungsten, Chapter 2 Tantalum, Chapter 3 Molybdenum, Chapter 4 Niobium and Chapter 5 Rhenium

  • Recovery of Molybdenum and Rhenium Using Selective

    Recovery of Molybdenum and Rhenium Using Selective

    Recovery of Molybdenum and Rhenium Using Selective Precipitation Method from Molybdenite Roasting Dust in Alkali Leaching Solution Sung-Ho Joo1,2, Young-Uk Kim1, Jin …

  • tungsten rhenium recovering - lab3dnl

    tungsten rhenium recovering - lab3dnl

    State of the art on the recovery of refractory metals from primary resources The mining and mines of refractory metals, tungsten, tantalum, molybdenum, niobium and rhenium in Europe and the world are described and the existing technologies of mining, mineral processing and extractive metallurgy (hydrometallurgy and pyrometallurgy) are …

  • Tungsten Rhenium Recovering - salvinoseu

    Tungsten Rhenium Recovering - salvinoseu

    molybdenum gold recovery poland silver,tin,tungsten,and zinc,and the production of bismuthChimkent plant incadmium,copper,gold,indium,molybdenum,rhenium,appear

  • Recovery of rhenium from tungsten-rhenium alloy (Book

    Recovery of rhenium from tungsten-rhenium alloy (Book

    Note: Citations are based on reference standards However, formatting rules can vary widely between applications and fields of interest or study

  • INTERNATIONAL SYMPOSIUM ON RHENIUM AND RHENIUM …

    INTERNATIONAL SYMPOSIUM ON RHENIUM AND RHENIUM …

    A process for selectively recovering rhenium from exhausted Pt-Re catalysts includes next steps: roasting, acid- or alkali-assisted leaching, ion-exchange recovery or rhenium from the solution and preparing high-purity ammonium perrhenate (9999%) Results of developing commercially applicable methods are useful for rhenium recovery from scrap of rhenium-containing alloys

  • State of the art on the recovery of refractory metals from

    State of the art on the recovery of refractory metals from

    refractory metals from primary resources Based on metal type the document is assigned into five chapters : Chapter 1 Based on metal type the document is assigned into five chapters : Chapter 1 Tungsten, Chapter 2 Tantalum, Chapter 3 Molybdenum, Chapter 4 Niobium and Chapter 5 Rhenium

  • (PDF) The improvement of rhenium recovery technology from

    (PDF) The improvement of rhenium recovery technology from

    The lack of rhenium raw materials sources on the territory of Russia leads to the necessity of this valuable metal recovery from wastes and secondary raw materials, in particular, from tungsten

  • recovery rhenium liquor - royalcrescentgroup

    recovery rhenium liquor - royalcrescentgroup

    Separation of rhenium and molybdenum from … EBSCOhost serves thousands of libraries with premium essays, articles and other content including Separation of rhenium and molybdenum from molybdenite leach liquor by the solvent extraction method

  • Recovery of rhenium from a molybdenite roaster fume

    Recovery of rhenium from a molybdenite roaster fume

    Selective Rhenium Recovery from Spent Reforming Catalysts Apr 3, 1999 - After deactivation the catalysts are treated for the recovery of Pt and Re The aim of this and cheap reagent, such as NaHCO3) leaching process may dissolve namic data from HRC16 at 298 K and O2 pressure, 1 atm):

  • rhenium recovery di - tambinhnl

    rhenium recovery di - tambinhnl

    centrifugal gravity recovery of gold from sulfide ores plant design recovery 3 mes vibrating screen production sizes recovery shaking table of gold recovery pdf rhenium recovery di rhenium mining crusher washing plant for recovery gold icon gold recovery gravity concentrators igr 3000 rhenium track crusher small scale antimony recovery rhenium

  • Rhenium | stone element | Britannica

    Rhenium | stone element | Britannica

    The recovery of rhenium is aided by the concentration of its volatile heptoxide (Re 2 O 7) in the flue dust and gases given off during the smelting of molybdenite ore or from its concentration with the platinum metals in the anode sludge during electrolytic copper refining

  • tungsten rhenium convert - peopleperformancebe

    tungsten rhenium convert - peopleperformancebe

    Rhenium is element number 75 but tungsten and molybdenum metallurgically Rhenium is obtained as a byproduct of molybdenum conversion to from Rhenium is obtained as a byproduct of molybdenum conversion to from

  • Tungsten Rhenium Convert - australiandenboschnl

    Tungsten Rhenium Convert - australiandenboschnl

    Tungsten,Rhenium and Osmium, "Tough Guys" in Rare Metals China is a major producer of tungsten, with a reserve of 52 million tons of tungsten resources, which accounts for 65% of the world's total reserves Its output and exports rank first in the world In the big family of rare metals, the second toughest guy is the metal rhenium

  • Recovery of rhenium from tungsten-rhenium alloy (Book

    Recovery of rhenium from tungsten-rhenium alloy (Book

    Note: Citations are based on reference standards However, formatting rules can vary widely between applications and fields of interest or study

  • Tungsten Extraction Process - Mineral Processing & Metallurgy

    Tungsten Extraction Process - Mineral Processing & Metallurgy

    Tungsten Extraction Process Summarized The ability to recover a high-grade concentrate from an initial coarse unclassified feed, with a minimum amount of slimes, is …

  • Fine Purification of Rhenium to Remove Polyanions during

    Fine Purification of Rhenium to Remove Polyanions during

    Abstract We studied the conditions for separating rhenium and polyanions (molybdenum and tungsten) by selective extraction of rhenium from the phase of saturated gel-type strongly basic anion exchanger by tertiary amine solution

  • Recovery of rhenium from a molybdenite roaster fume

    Recovery of rhenium from a molybdenite roaster fume

    Selective Rhenium Recovery from Spent Reforming Catalysts Apr 3, 1999 - After deactivation the catalysts are treated for the recovery of Pt and Re The aim of this and cheap reagent, such as NaHCO3) leaching process may dissolve namic data from HRC16 at 298 K and O2 pressure, 1 atm):

  • Rhenium | Re - PubChem

    Rhenium | Re - PubChem

    Rhenium-molybdenum alloys are superconductive at 10 K; tungsten-rhenium alloys are also superconductive around 4-8 K, depending on the alloy Rhenium metal superconducts at 2 4 K Methylrhenium trioxide ("MTO"), CH3ReO3 is a volatile, colourless solid has been used as a catalyst in some laboratory experiments

  • Method for the recovery of rhenium and molybdenum liquid

    Method for the recovery of rhenium and molybdenum liquid

    The invention relates to the field of hydrometallurgy of non-ferrous metals, in particular to the extraction recovery of rhenium from complex solutions, and can be used in the processing of zinc sulphate-chloride solutions obtained in the processing of industrial products lead-zinc production

  • MSP-REFRAM Final Conference Rhenium production

    MSP-REFRAM Final Conference Rhenium production

    The biggest rhenium recovery plants from molybdenite concentrates In addition to installation in Chile Molymet owns: -Roasting plant Molymex in Mexico (based on concentrates from La Caridad mine managed by Grupo Mexico), -Roasting plants and ferromolybdenum smelters in Belgium (Sadaci) and -Metallurgical plants Chemiemetall in Germany and -Luoyang High-tech Molybdenum & Tungsten …

  • Umicore - Rhenium

    Umicore - Rhenium

    They detected rhenium spectroscopically in platinum ores and in the minerals columbite, gadolinite and molybdenite In 1928, Noddack and Berg were able to extract 1 gram of rhenium from 660 kilograms of molybdenite Today, rhenium is obtained as a by-product of refining molybdenum and copper

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