Process Recovery Rhenium
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- Process Recovery Rhenium
We claim: 1. A process for the recovery of a metal selected from the group consisting of molybdenum and rhenium from their sulfide ores which comprises subjecting the ores to microwave energy in the presence of oxygen or chlorine to selectively heat the sulfides to convert the sulfides to oxides or chlorides, respectively, and recovering the metals from the formed …
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The estimated average content of rhenium is just about 1 ppb in the Earth's crust. Rhenium is always associated with porphyry copper. In the pyrometallurgical process of copper concentrate, rhenium in perrhenate (ReO 4 −) form enters copper smelting acidic wastewater, generated from wet scrubbing of the flue gases [1]. Some methods have ...
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Anion exchange recovery of rhenium from industrial liquors followed by direct synthesis of a rhenium halide salt. Author links open overlay panel Evgeny Kirillov, Zhanna Bochkareva, ... A completely new process for the preconcentration of rhenium as a halide compound, which will contribute to the low-cost production of metallic rhenium, can be ...
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Molybdenum and Rhenium Recovery. Figure 8 details the process sequence employed for recovering molybdenum and rhenium from the electrooxidation reaction pulp. Liquid-solids separation was accomplished in two 3-foot rake thickeners in series with a 1- by 3-foot washing rotary drum filter. The pregnant solution was clarified in a 1- by 1-foot ...
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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 contaminants to produce a …
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In addition to rhenium, these materials also contained substantial amounts of nickel (43–53%), cobalt (7–22%), chromium (4–10%), aluminum (13–15%), and iron (up to 1.3%). This leaching process yielded a solution containing 1.5 g/dm 3 of rhenium but also nickel, as well as cobalt, iron, chromium, and aluminum. This solution was directed ...
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After elution, the rhenium-rich stream is sent for rhenium recovery to produce a pure rhenium product, and a rhenium lean eluate solution for optional reuse in the circuit ( Waterman et al., 2009).
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In addition, focus on the recovery of rhenium from secondary sources, such as alloy scraps and catalysts, is continually growing. This paper presents a review of both primary and …
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Process for the recovery of rhenium and molybdenum values from molybdenite concentrate Download PDF Info Publication number US3739057A. US3739057A US00161111A US3739057DA US3739057A US 3739057 A US3739057 A US 3739057A US 00161111 A US00161111 A US 00161111A US 3739057D A US3739057D A US 3739057DA US 3739057 …
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Rhenium production from copper and molybdenum sulphides involves the use of a pyrometallurgical process. In traditional pyrometallurgy processes, gases emissions produce …
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The Re 2 O 7 is then recovered from the gas phase by a wet scrubbing process whereby the rhenium is eventually precipitated as ammonium perrhenate. The recovery of rhenium from the Mo and Cu ores has been estimated at 40–60% and significant opportunity exists to improve the efficiency of the process [13].
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The recovery of rhenium from them can be carried out by various pyro-and hydrometallurgical methods [5]. At the same time, electrochemical methods are the most promising way for fast and effective ...
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Recovery Rhenium refers to the process of reclaiming rhenium, a rare and valuable metal primarily used in aerospace and high-temperature applications. This process has gained significance in the ...
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An alternative process for recovery of the rhenium from the water solution which has been found to be very effective is described and claimed in applicants copending application Serial No. 234,567, filed of even date herewith. This process utilizes solvent extraction with a solution of a quaternary ammonium salt in an organic solvent.
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Here we present a review of methods of rhenium recovery from spent platinum-rhenium catalysts and various alloy wastes and some of the experimental data obtained by the …
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The Process Recovery Center is located in Nashua, New Hampshire and serves clients from the New Hampshire, Massachusetts and Vermont areas. We accept most major insurance providers and also offer an affordable cash pay rate with payment plan options. If you have any questions about our treatment programs or pricing, give us a call or submit the ...
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Recycling rhenium from spent alloys and catalysts is a multi-step process combining pyrometallurgical and hydrometallurgical techniques, where its separation and the subsequent steps are...
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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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In the adsorption process, the recovery rate of rhenium reached 97.13% after approximately 960 BVs of leach solution flow. The loaded resins were eluated using 2.5% concentration of aqueous ammonia, producing a rhenium-rich solution containing 1995 mg/L rhenium, in which the rhenium concentration enriched 309 times compared to the original ...
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Kasikov and Petrova (2008) reviewed the processing methods for spent platinum–rhenium catalysts. Abisheva et al. (2011) summarized the recovery technologies of rhenium from mineral raw materials in Kazakhstan, focusing on the recovery of rhenium as by-products of copper, lead and uranium production.
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A detailed thermodynamic study of the reaction conditions used in LSO process indicates that rhenium recovery is possible at higher rates than currently realized in the industry. Conditions at ...
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A variety of processing technologies exist for recovery from both primary and secondary sources of rhenium. Currently, there are no known primary rhenium deposits; thus, the method in which primary rhenium is produced is dependent on the commodity of which it is a byproduct, e.g., copper, molybdenum, uranium, etc.
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The new RIP rhenium recovery process obtained is of the advantages of higher selectivity, short process, less costs and environmental compact, which is beneficial to the molybdenum and rhenium ...
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In the adsorption process, the recovery rate of rhenium reached 97.13% after approximately 960 BVs of leach solution flow. The loaded resins were eluated using 2.5% concentration of aqueous ...
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DOI: 10.1134/S0036029517010074 Corpus ID: 99044267; Electrochemical recovery of rhenium from W–Re alloys in the form of perrhenic acid: I. Fundamentals of the process @article{Levin2017ElectrochemicalRO, title={Electrochemical recovery of rhenium from W–Re alloys in the form of perrhenic acid: I. Fundamentals of the process}, author={A. M. Levin and …
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The original Kennecott Process for the recovery of rhenium involves the previously mentioned scrubbing process, in which the exhaust gases of the molybdenum roasting circuit are washed with water to produce perrhenic acid. …
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Rhenium is utilized as an additive to improve the high-temperature strength and stability of materials, such as nickel-based superalloys, which are employed in jet engine turbine blades, alloys for ultrahigh-temperature thermocouples, and platinum catalysts, which are used in oil refining. Currently, around 80% of rhenium demand is for superalloy production, and this …
WhatsApp: +86 18221755073Rhenium-bearing molybdenite concentrate is a typical mineral resource to recover molybdenum and rhenium, but has long been poorly utilized via oxidative roasting-leaching route. In this work, a novel flowsheet consisting of chloride leaching, co-volatilization, selective condensation, and water leaching has been proposed and verified on the basis of both …
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In addition, focus on the recovery of rhenium from secondary sources, such as alloy scraps and catalysts, is continually growing. This paper presents a review of both primary and secondary...
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An alternative, integrated method for processing sulfide molybdenum concentrate to recover molybdenum and associated rhenium is proposed. The method involves oxidizing roasting without the release of sulfur dioxide, dust entrainment, and loss of valuable metals and two-stage leaching with selective dissolution of rhenium and, then, molybdenum. Molybdenum …
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Means, in which up to 97 and 87% of rhenium is extracted from the crushed and non-crushed catalyst, respectively, proposed by T. N. Angelidis to simplify the conventional process of Re recovery shown in Fig. 5, involves using a dilute NaHCO 3 solution for the preliminary dissolution of rhenium from the catalyst, followed by leaching the ...
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In 2009, their daughter company Ecoren, treating captured flue dusts from a pyrometallurgical process for its recovery, became the third-largest rhenium producer in the world. ...
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The CH 3 COOK activated hierarchical biochar has the high potency for highly efficient and selective recovery of perrhenate from the acidic solution generated by the copper …
WhatsApp: +86 18221755073The main challenges in rhenium extraction and recycling are the enrichment of rhenium in the production and the collection and classification of spent rhenium scrap, to …
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Recovery of rhenium from molybdenum and copper concentrates during the looping sulfide oxidation process. Int J Refract Met Hard Mater 2014; 44: 1–6. Crossref
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Molybdenum and rhenium can be extracted and separated from an electrooxidation pregnant solution by a combined process utilizing solvent extraction, carbon adsorption, and …
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