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Recovery of rhenium from a molybdenite roaster fume as high …

Rhenium (Re) was recovered as high purity ammonium perrhenate (APR) from a scrub liquor produced by a pilot plant treating 2000 m 3 /h of a fume discharged from a molybdenite roaster. The hydrometallurgical process adopted incorporates first a neutralisation stage using lime to remove most of Mo, all Cu, As and other minor …

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Recovery of molybdenum and rhenium in scrub liquors of fumes …

The present work addresses the recovery of rhenium from scrub liquor of molybdenite concentrate roasting fume and dust by solvent extraction method. According to the results, recovery of rhenium from the scrub liquor is not practical unless molybdenum is removed in advance. The extraction of molybdenum was carried out using a D2EHPA …

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Selective recovery of rhenium from molybdenite flue-dust leach liquor

The selective extraction of rhenium from the leach liquor of molybdenite roasting flue-dust and its subsequent stripping were investigated using the solvent extraction technique. In this study, tri-butyl phosphate (TBP) as organic extractant in kerosene and metals bearing solution (in mg/L: 6042 Mo, 208 Re, 534 Cu, 1982 Fe, 32 Mg, and 19 Pb) …

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Recovery of rhenium from a molybdenite roaster fume as high …

The present work addresses the recovery of rhenium from scrub liquor of molybdenite concentrate roasting fume and dust by solvent extraction method. According to the results, recovery of rhenium ...

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Recovery of rhenium from tungsten‑rhenium wire by alkali fusion …

The present work addresses the recovery of rhenium from scrub liquor of molybdenite concentrate roasting fume and dust by solvent extraction method. According to the results, recovery of rhenium ...

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Selective recovery of Rhenium from industrial leach solutions by

Selective recovery of Rhenium from industrial leach solutions by synergistic solvent extraction. Author links open overlay panel Tao Hong a b, Manbo Liu a, Jin Ma b, ... and lead in the ammonia perrhenate formed from the evaporation and crystallization process using the stripping liquor is less than 0.5 mg/kg and 1.0 mg/kg, …

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How to Recover Rhenium from Uranium Leach Liquor

The discovery of rhenium on the ion exchange resin used at the uranium in-situ leach operations at Palangana (Texas) led to a laboratory study on the possible methods of recovery. Rhenium, present in small amounts in the ammonium carbonate leach liquors as the perrhenate anion, ReO4-, concentrated on the anion exchange resin, …

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Recovery of rhenium and molybdenum from a roaster …

In our previous study, using activated carbon to recover Re (155-240 mg/L) and Mo (38.3-74.9 mg/L) from liquors produced from lime precipitation similar to those …

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Recovery of rhenium from tungsten‑rhenium wire by alkali fusion …

Semantic Scholar extracted view of "Recovery of rhenium from tungsten‑rhenium wire by alkali fusion in KOH-K2CO3 binary molten salt" by Long-gang Ye et al. ... Selective recovery of rhenium from molybdenite flue-dust leach liquor using solvent extraction with TBP. Humma Akram Cheema, S. Ilyas, S. Masud, Muhammad …

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Recovery of rhenium and molybdenum from a roaster fume scrubbing liquor

A liquor (400 L) was ... Activated carbon is a suitable sorbent for rhenium recovery because unlike ion-exchange resins, it has high chemical resistance and osmotic-shock resistance. The results show that the sorption mechanism is complex. Two follow-up processes occurred—physical adsorption and the reduction of Re(VII) to Re(VI).

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Selective recovery of Rhenium from industrial leach solutions by

The concentration of Re in the stripping liquor rapidly increases due to the high concentration of free ammonium in liquor for the first and second strip stage. After the stripping process, the percentage of rhenium recovery is 98.78%, and the concentration of Re in stripping liquor is 31.41 g/L.

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US4584185A

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 1.25 normal, and containing the major …

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Dissolution of molybdenite roasting flue dust in sulfuric acid

The present study dealt with the hydrometallurgical dissolution of molybdenum (Mo) and rhenium (Re) along with co-existing metal impurities from the molybdenite roasting flue dust using sulfuric acid as the lixiviant medium. The parametric influence of agitation speed, acid concentration, temperature, time, and pulp density in …

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Recovery of rhenium from a molybdenite roaster fume as …

Rhenium was selectively recovered from a fume produced by a Mo sulphide roaster. • Scrubbing produced a strip liquor containing 260–280 mg/L Re and 80–90 …

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How to Separate & Recover Molybdenum & Rhenium

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Separation of Re and Mo from roasting-dust leach-liquor using …

The aim of this work is separation and purification of Re over Mo from molybdenum oxide leaching liquor by using TBP as the extractant. Flowchart of the separation and purification process was devised based on the theoretical and experimental analysis of the system. ... to identify suitable processes to recover the rhenium with a …

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Investigation on the recovery of rhenium in the high arsenite …

The copper/arsenic in the real acid washing in the copper smelting process existed in low-valent states, i.e., Cu + /HAsO 2 ion.. 84.44 wt% rhenium existed in forms of ReO 2 and rhenate ions in the acidic wash solution which is used as the main stream for rhenium recovery.. The particle flocculation favors the precipitation rate of metal sulfide …

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Hydrometallurgical Extraction of Rhenium from Mo …

First Online: 02 February 2022 Part of the The Minerals, Metals & Materials Series book series (MMMS) Abstract In the present study, the hydrometallurgical …

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Recovery of molybdenum and rhenium in scrub liquors of …

The present work addresses the recovery of rhenium from scrub liquor of molybdenite concentrate roasting fume and dust by solvent extraction method. According …

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CN103436721A

Waste and old superalloy contains the valuable metals such as nickel, cobalt, tungsten, molybdenum, rhenium, although in recent years high-temperature alloy waste material is reclaimed more and more and payes attention to, but because rhenium content in alloy is generally relatively less, thereby recovery process technical sophistication, facility …

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Novel Aqueous Processing of the Reverted Turbine-Blade …

A preliminary study on the hydrometallurgical recovery of rhenium from an engine-reverted superalloy, CMSX-4, was performed. The novelty of this work dealt with (i) the applicability of electro-generated Cl2 in rhenium leaching and (ii) the maneuvering of the organic extractants based on the metal speciation in leach liquor. In a two-step HCl …

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A Novel Aqueous Processing of the Reverted Turbine-Blade

The first use of phosphinic acid in molybdenum separation from rhenium in the leach liquor yielded a high separation value (βMo/Re = 839) using 0.067 mol L−1 extractant; whereas the mixed ...

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Coated impregnated resin containing Alamine 336 for the …

To demonstrate the possibility for industrial applications, the recovery of rhenium by 336-CSIRs from industrial waste water was carried out for 12 h at 298 K. As reported in Table 3, it was found that 99.92% of rhenium was adsorbed, with the adsorption of only 0.52% arsenic, 0.35% copper, 0.89% bismuth, 0.24% cadmium, 0.12% zinc and …

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US3862292A

Rhenium is recovered from solution by adsorption on activated carbon, followed by elution with a water-soluble alcohol or an alcohol-water mixture. US3862292A - Recovery of rhenium - Google Patents Recovery of rhenium Download PDF Info Publication number US3862292A. US3862292A US386792A ...

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Investigation on the recovery of rhenium in the high

The recovery of rhenium from acidic wash solution originating from a copper smelting process using sodium thiosulfate were investigated. Effects of reaction time, reaction temperature, flocculant ...

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Recover Rhenium by Solvent Extraction

Recovery of rhenium by solvent extraction can be considered to be a two step process involving concentration of a low grade highly contaminated dilute feed to a …

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Review of rhenium extraction and recycling technologies from …

In order to increase rhenium recovery in this process, ... Isodecanol and 80% Anysol-150 to extract rhenium from a liquor containing 260–280 mg/L Re and 80–90 mg/L Mo. Srivastava et al. (2015) addressed the extraction of rhenium(VII) from a HCl solution using Cyanex 923 diluted in kerosene.

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Hydrometallurgical Extraction of Rhenium from Mo-Bearing Leach Liquor

The first use of phosphinic acid in molybdenum separation from rhenium in the leach liquor yielded a high separation value (βMo/Re = 839) using 0.067 mol L−1 extractant; whereas the mixed ...

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US3739549A

The recovery of rhenium from roaster gases is improved in extraction efficiency in that, following the removal of solids from the gas, the dust-cleaned gaseous effluent remaining which contains particles of rhenium oxide ranging down to submicron size is then subjected to wet-filtering, whereby to effect a substantial improvement in the recovery of rhenium …

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Selective recovery of Rhenium from industrial leach solutions by

Rhenium recovery is predicted to be a process with a great potential because over 80% of rhenium can be recovered (Shen et al., 2021). ... a process has been developed to recover rhenium from ...

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