Rhenium Extraction Results

Rhenium Extraction Results - rjps

The results show that the Lucerne is a hyperaccumulator of Re and can be extraction of rhenium from plant mass Effect of operational parameters and internal recycle on The extraction of rhenium from eventually to investigate the agreement between single-stage experimental results with continuous co-current extraction

Recovery of Molybdenum & Rhenium From Molybdenite …

The extraction step was carried out in three stages (fig 8) Stripping was accomplished in two stages using 17N ammonium hydroxide The concentration of molybdenum and rhenium entering the solvent extraction circuit was 12 to 18 g/l molybdenum and 25 to 40 ppm rhenium

Rhenium Extraction by Leaching in Ammonium Iodide Iodine

Rhenium Extraction by Leaching in Ammonium Iodide Iodine Pure rhenium is a refractory metal with a very high melting point of 3180°C Extraction of rhenium from molybdenite concentrates and other primary sources has been studied for many years

Solvent extraction of rhenium from molybdenum in alkaline

The results in Fig 5 show that temperature cannot obviously impact rhenium extraction rate, so the optional manipulation temperature is chosen as room temperature Download full-size image Fig 5

Rhenium in the soil - 8 Magazine

The chimneys there were operating without effective filters for many years - the results, in the air went out not only our rhenium, but the harmful sulfur oxide and arsenic as well With phyto extraction is possible nearby soils can be purified and in addition - rhenium to be added

Behavior of Extraction, Stripping, and Separation

behavior of extraction, stripping and separation possibilities of rhenium and molybdenum from molybdenite roasting dust leaching solutions using tri-otyl-amine (TOA) as an extractant has been investigated From the results, 5vol% TOA dissolved in kerosene is found to be selective for extraction of rhenium as compared with molybdenum

Study of the Possibility of Rhenium Extraction and

• by ethanol extraction of rhenium from raw leaves additionally purification of the leaching solution from impurities is achieved Based on the results, it may be concluded that extraction of rhenium from raw leaves by hot ethanol is better for its recovery than is direct incineration of plant mass

Investigation on ammonium perrhenate behaviour in nitrogen

Ammonium perrhenate (APR) is an intermediate product in rhenium extraction process, by which it is possible to produce rhenium powder The main purpose of this research is to The results indicate that APR behaves almost the same in the argon and nitrogen atmospheres In these

US3244475A - Solvent extraction process for separating

It has further been found that conversion of the Aliqua't 336 to the perchlorate form, by shaking with perchloric acid or a perchlorate, prior to extraction results in an even better separation of rhenium …

Rhenium - Wikipedia

Rhenium is a stone element with symbol Re and atomic number 75 It is a silvery-gray, heavy, element at 5903 K Rhenium resembles manganese and technetium chemically and is mainly obtained as a by-product of the extraction and refinement of molybdenum and copper ores

Rhenium in the soil - 8 Magazine

The chimneys there were operating without effective filters for many years - the results, in the air went out not only our rhenium, but the harmful sulfur oxide and arsenic as well With phyto extraction is possible nearby soils can be purified and in addition - rhenium to be added

Sustainable Extraction and Separation of Rhenium and

Sustainable Extraction and Separation of Rhenium and Molybdenum from Model Copper Mining Effluents Using a Polymeric Aqueous Two-Phase System Results were evaluated by the distribution coefficient (K M) for a given metal (M) in the aqueous two-phase system and the extraction selectivity (S

Recovery of Rhenium and Molybdenum from Molybdenite

Recovery of Rhenium and Molybdenum from Molybdenite Roasting Dust Leaching Solution by Ion Exchange Resins Sung-Ho Joo and ion exchange are used for selective rhenium extraction from these solutions8­10) Fisher and Meloche (year Recovery of Rhenium and Molybdenum from Molybdenite Roasting Dust Leaching Solution by Ion Exchange Resins

Solvent extraction of rhenium from molybdenum in alkaline

Solvent extraction of rhenium from molybdenum in alkaline solution Article in Hydrometallurgy 97(3-4):153-157 · July 2009 with 84 Reads DOI: 101016/jhydromet200902005

Separation of rhenium and molybdenum from molybdenite

Separation of rhenium and molybdenum from molybdenite leach liquor by the solvent extraction method The comparison of experimental results with the continuous co-current extraction …

US3244475A - Solvent extraction process for separating

It has further been found that conversion of the Aliqua't 336 to the perchlorate form, by shaking with perchloric acid or a perchlorate, prior to extraction results in an even better separation of rhenium …

Tsvetnye Metally Rhenium and platinum extraction from …

with the use of electrochemical hydrochlorination Tsvetnye Metally 2013, No 1, pp 55–59 trochemical platinum and rhenium extraction from dead cat-alysts General view of the equipment is presented in Fig 1 The results are presented in Table 2

Separation of rhenium from molybdenum and other heavy

Separation of Rhenium from Molybdenum and Other Heavy Metals by Solvent Extraction By u Yatirajam and L R Kakkar (Received July 20, 1970) Introduction Few methodsi, ~ of solvent extraction exist for the separation of rhenium from molybdenum and other elements in hydrochloric acid

Recycling and Clean Technologies Research Summary The

Recycling and Clean Technologies Research Summary allurgical extraction of rhenium from lead slime of rare metal manufacture in IV) into the highest and soluble ones (VII) See the sidebar for experimental pro-cedures RESULTS AND DISCUSSION Effect of Leaching Temperature Figure 1 shows the effect of tempera-

US9435006B2 - Extraction agent for precious metals and

FIG 4 shows the results of extraction of osmium, rhodium, iridium, ruthenium, and rhenium from an acid solution containing osmium, rhodium, iridium, ruthenium, and rhenium with the use of a precious metal extraction agent of the example of the present invention

Separation of Rhenium (VII) and Vanadium (V) from

Separation of Rhenium (VII) and Vanadium (V) from Hydrochloric Acid Solutions by Solvent Extraction Thi Hong Nguyen, Hoai Thanh Truong, and Man Seung Lee* Department of Advanced Materials Science & Engineering, Institute of Rare Metal, Mokpo National University, Chonnam 58554, Republic of Korea

US Rhenium Metal Powder Price (Dollars per gram)

extraction were refined From 1951 through 1954, interest in results in a significant weight savings; and the inherent brittleness of tungsten and molyb- US Rhenium Metal Powder Price (Dollars per gram) Year Price Year Price Year Price Year Price 1942 1400 1957 146 1972 198 1987 089 1943 1000 1958 145 1973 176 1988 147

Journal Archive - Johnson Matthey Technology Review

The major source of rhenium production is the wash sulfuric acid which contains 100 to 400 mg l −1 rhenium and 03 to 05 mg l −1 osmium Rhenium is recovered from wash sulfuric acid by liquid-liquid extraction, using trialkylamine in kerosene

INTERNATIONAL SYMPOSIUM ON RHENIUM AND RHENIUM …

RECYCLING OF RHENIUM: DV Drobot, VI Bukin, Moscow State Academy of Fine stone Technologies, Pr Vernadskogo 86, 117571 Moscow, Russia The aim of the investigation is the generalization of the published results according of rhenium extraction from secondary materials

phytomining new method for rhenium production

Rhenium Extraction Results rjps Study of Rhenium Bioaccumulation in Lucerne Study of Rhenium Bioaccumulation in Lucerne The results show that the Lucerne is a hyperaccumulator of Re and can be extraction of rhenium Get Now production process of gold mining icas2017conference

Determination of Rhenium in Environmental Samples Using …

Determination of Rhenium in Environmental Samples Using an Extraction This stone presents results from a novel and simpler method that gives consistently high Re The procedu re includes an extraction chrom atographic resin (TEV A resin, Eichro m Ind Inc) previously identified as having a high selectivity for Re and Tc 7

INTERNATIONAL SYMPOSIUM ON RHENIUM AND RHENIUM …

RECYCLING OF RHENIUM: DV Drobot, VI Bukin, Moscow State Academy of Fine stone Technologies, Pr Vernadskogo 86, 117571 Moscow, Russia The aim of the investigation is the generalization of the published results according of rhenium extraction from secondary materials

Determination of rhenium content in molybdenite by ICP-MS

Determination of rhenium content in molybdenite by ICP-MS after separation of the major matrix by solvent extraction with N-benzoyl-N-phenylhydroxalamine Talanta 2010; 81(3) :954-8 The results demonstrate good precision and accuracy for the proposed method The advantages of the method (ie, simplicity, efficiency, short analysis time

US Patent for Extraction process for recovery of rhenium

The foregoing Bureau of Mines Report also states that reuse of the organic results in lower extraction efficiencies particularly when perchloric acid was used as the stripping agent in losses of up to about 50 percent of the rhenium present due to volatilization Additionally, after the recovery of rhenium by the extraction processes

Research of the rhenium sorption from the industrial

This article gives the results of testing of the anionite A170 of the “Purolite” Company for the sorption extraction of rhenium from the industrial solutions of washed sulfuric acid with its low concentration (13 mg/dm 3) The results of rhenium elution from the anionite by …

Behavior of Extraction, Stripping, and Separation

behavior of extraction, stripping and separation possibilities of rhenium and molybdenum from molybdenite roasting dust leaching solutions using tri-otyl-amine (TOA) as an extractant has been investigated From the results, 5vol% TOA dissolved in kerosene is found to be selective for extraction of rhenium as compared with molybdenum

Determination of Rhenium in Plant Materials - SpringerLink

—Methods for rhenium extraction from plant materials were studied using model systems and the 186 DETERMINATION OF RHENIUM IN PLANT MATERIALS 87 In the radiometric method, the 186 Re rhenium RESULTS AND DISCUSSION Ashing of plant samples

Rhenium – Rare Metals USA

Rhenium has the third-highest melting point and second-highest boiling point of any element at 5903 K Rhenium resembles manganese and technetium chemically and is mainly obtained as a by-product of the extraction and refinement of molybdenum and copper ores

Separation of Rhenium (VII) and Vanadium (V) from

Separation of Rhenium (VII) and Vanadium (V) from Hydrochloric Acid Solutions by Solvent Extraction Thi Hong Nguyen, Hoai Thanh Truong, and Man Seung Lee* Department of Advanced Materials Science & Engineering, Institute of Rare Metal, Mokpo National University, Chonnam 58554, Republic of Korea

APPLICATION OF THE RHENIUM-OSMIUM ISOTOPE …

In addition to discussing the implications of these Re-Os results, this thesis discusses the development of the Re-Os analytical method at the University of Houston vi Rhenium and Osmium Extraction and Analytical Methods 9 Sample Collection 9 Sample Processing 12 Sample Digestion 12

Extraction process for recovery of rhenium - GTE Sylvania

Jan 22, 1980 · Extraction process for recovery of rhenium United States Patent 4185078 The foregoing Bureau of Mines Report also states that reuse of the organic results in lower extraction efficiencies particularly when perchloric acid was used as the stripping agent The prior art solvent systems lost extraction efficiency and new

extraction tin results - weldom-tours

Extraction Tin Results Extraction Tin Results Feedback Form Improved extraction of PCR-quality community -… produces superior results in PCR-based studies of diversity, as Drained peatlands used for extraction and agriculture: which are used for peat extraction or as hayfield (Chistotin et al,

Separation of molybdenum and rhenium by extraction with

Separation of molybdenum and rhenium by extraction with mixtures of trioctylamine and aliquat 336 followed by selective stripping