موقعك الحالي:صفحة رئيسية>المنتجات
2003-4-10 Molybdenum liquid–liquid extraction and equilibrium measurements were carried out by contacting in separator funnels equal volumes (20 ml) of the Mo solution and the organic solvent during 24 h enough to allow equilibrium to be reached.
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The method of extraction of molybdenum from molybdenum cinder, including leaching with translation of molybdenum in solution by treatment with a solution containing a carbonate of an alkali metal, characterized in that as a carbonate of an alkali metal use potassium carbonate and carry out leaching solution, optionally containing potassium nitrate, when the ratio (by weight) 2 CO 3:Mo about in the
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Made available by U.S. Department of Energy Office of Scientific and Technical Information ...
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Extraction method of molybdenum from diluted acid solutions containing companion elements of molybdenum involves molybdenum deposition in the form of its salt. Besides, deposition with molybdenum purification is performed in the form of its cesium salt of 12-molybdophosphoric acid containing the following: Cs 3-x H x PMo 12 O 40 nH 2 O (x=0-1, n=9-12). Deposition is performed at
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2014-3-12 This is a report on the extraction of molybdenum(VI) ions using a supported liquid membrane, prepared bydissolving in kerosene, the extractant Alamine 336 (a long-chain tertiary amine) employed as mobile carrier. A flathydrophobic microporous membrane was utilised as solid support. Appropriate conditions for Mo(VI) extractionthrough the liquid membrane were obtained from the results of liquid/liquid extraction and stripping partitionexperiments. The influence of feed solution acidity, the carrier extractant concentration in the organic liquid film andthe content of strip agent on the metal flux through membrane were investigated. It was established that maximalextraction of metal is achieved at a pH 2.0 if sulphuric acid is used in the feed solution and at a pHvalue over 11.0 ifNa2CO3is used as strip agent. Moreover, the molybdenum extraction
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The closest in technical essence and the achieved result of the claimed invention is a method of extraction of molybdenum trioxide from Ogarkov, including sublimation and condensation of the resulting vapors, and use stubs, obtained by oxidative roasting granular quartz sand molybdenum concentrate, and the sublimation is carried out at a ...
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2005-5-15 In strongly acidic solutions, molybdenyl cations (MoO 22+) occur. Extraction of the ABO–molybdenyl complex, (C 14 H 12 O 2 N 2) 2 MoO 2, from the acid medium is a selective method for the separation of molybdenum [1], [18], [19]. Thus, we examined ABO for the homogeneous liquid–liquid extraction of molybdenum.
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“Method of Extraction of Molybdenum Products Catalytic Epoxidation of Olefins with Organic Hydroperoxides,” Patent No. 2367609, 2009. has been cited by the following article: TITLE: Waste Management in Propylene Epoxidation Process with the Use of Supercritical Fluid Media
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2021-3-11 A new method for extraction of iron-molybdenum cofactor (FeMoco) from nitrogenase adsorbed to DEAE-cellulose. 1. Effects of anions, cations, and preextraction treatments. Paul A. McLean, David A. Wink, Stephen K. Chapman, Alison B. Hickman, Debbie M. McKillop, and ;
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Metallic molybdenum is produced by hydrogen reduction of pure molybdenum trioxide (MoO3) or ammonium dimolybdate (ADM). The production is carried out in electrically heated tubes or muffle furnaces, into which hydrogen gas is introduced as a countercurrent against the feed.
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mining extraction method of molybdenum. How Is Molybdenum Mined and Processed? Refractory Metals Sep 05, 20190183;32;Molybdenum is a silverwhite metal with an atomic number of 42, a density of 10.2 g / cm179;, a melting point of 2610 176; C, and a boiling point of 5560 176; C. Molybdenum mining and processing technology have been improving since 1916, when Climax molybdenum Molybdenum
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The method of extraction of molybdenum (VI) from aqueous solution relates to the field of extraction of substances with the use of sorbents and/or flocculants and can be used in ferrous and nonferrous metallurgy, as well as for the treatment of industrial and domestic wastewater. The known method of ion exchange wastewater treatment [A. A. Ashirov.
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Molybdenum Extraction Methods from Nickel molybdenum . Extracted from the nickel molybdenum mixture in molybdenum extraction technology is more mature, so the corresponding extract molybdenum patented technology is greater. China has rich resources of molybdenum, is the . get price
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Extraction of Molybdenum VI and Vanadium V from Nitrate . In this study, solvent extraction method has been utilized for separation of molybdenum and vanadium from nitrate solution by utilizing coupling of acid and . Get Price
Read More“Method of Extraction of Molybdenum Products Catalytic Epoxidation of Olefins with Organic Hydroperoxides,” Patent No. 2367609, 2009. has been cited by the following article: TITLE: Waste Management in Propylene Epoxidation Process with the Use of Supercritical Fluid Media
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“Method of Extraction of Molybdenum Products Catalytic Epoxidation of Olefins with Organic Hydroperoxides,” Patent No. 2367609, 2009.
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2003-10-4 It was established that maximal extraction of metal is achieved at a pH 2.0 if sulphuric acid is used in the feed solution and at a pH value over 11.0 if Na2CO3 is used as strip agent. Moreover, the molybdenum extraction through membrane is enhanced when a 0.02 mol 1-1 content of the amine carrier in the organic phase is used.
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2015-4-9 Extraction of molybdenum and vanadium from the spent diesel exhaust catalyst by ammonia leaching method. Zhao Z(1), Guo M(2), Zhang M(1). Author information: (1)Beijing key Laboratory of Green Recycling and Extraction of metals, School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, PR ...
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of the molybdenum in the intact cofactor [S, 10, 12- 141. In this report a new procedure is described for extraction of molybdenum cofactor from xanthine oxidase without the need of a heat treatment or the presence of detergents, and not resulting in a strongly diluted sample as a consequence of acidification and neutralization.
Read More2012-8-28 Extraction in toluene was found to be quantitative (100%) with satisfactory sensitivity and stability of the colour for 8 hours. The raffinate was found devoid of molybdenum after single extraction. The absence of molybdenum in the raffinate was confirmed by more sensitive pyrogallol-thiocyanate method . Hence, toluene was selected as the ...
Read Moremining extraction method of molybdenum. How Is Molybdenum Mined and Processed? Refractory Metals Sep 05, 20190183;32;Molybdenum is a silverwhite metal with an atomic number of 42, a density of 10.2 g / cm179;, a melting point of 2610 176; C, and a boiling point of 5560 176; C. Molybdenum mining and processing technology have been improving since 1916, when Climax molybdenum Molybdenum
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Extracted molybdenum from tungsten molybdenum ore is research focus of molybdenum extraction, the following will simple introduce some methods of tungsten and molybdenum separation and molybdenumextraction. 1. Recovering tungsten and molybdenum from phosphorus ore: the phosphorus ore was decomposed by 2~5mol/L acid, after that, to process ...
Read More2014-3-12 Extraction of molybdenum by a supported liquid membrane method Carlos Basualtoa,*, Jose´ Marcheseb, Fernando Valenzuelaa, Adolfo Acostab a Lab. Operaciones Unitarias, Fac. Ciencias Quı´micas y Farmace´uticas, Universidad de Chile, CC 233, Santiago, Chile b Laboratorio de Ciencias de Superficie y Medios Porosos, Dpto de Quı´mica, UNSL-FONCYT, C.C.256-5700, San Luis, Argentina
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Solvent Extraction of Molybdenum VI from Hydrochloric . The separation factor of molybdenum and impurities was in the range of 10 4.31 10 5.89.The extracted molybdenum VI species of Mo 2 O 5 A 2 2HA in the loaded organic solutionwas identified by the combination of the slope and saturation methods and further proved. Extraction Method Of ...
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FIELD: chemical industry; methods of extraction of molybdenum from the acid solutions.SUBSTANCE: the invention is pertaining to the extraction of molybdenum from the acid solutions. The method provides for the mixing of the solution with the reactant, the mixture neutralization by then alkaline reactant, aging of the fine pulp at stirring action, the sedimentation and removal of the liquid phase.
Read More2003-10-4 It was established that maximal extraction of metal is achieved at a pH 2.0 if sulphuric acid is used in the feed solution and at a pH value over 11.0 if Na2CO3 is used as strip agent. Moreover, the molybdenum extraction through membrane is enhanced when a 0.02 mol 1-1 content of the amine carrier in the organic phase is used.
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2019-5-25 A new method for extraction of iron-molybdenum cofactor (FeMoco) from nitrogenase adsorbed to DEAE-cellulose. 2. Solubilization of FeMoco in a wide range of organic solvents. David A. Wink, Paul A. McLean, Alison B. Hickman, and ; William H. Orme-Johnson
Read Moreof the molybdenum in the intact cofactor [S, 10, 12- 141. In this report a new procedure is described for extraction of molybdenum cofactor from xanthine oxidase without the need of a heat treatment or the presence of detergents, and not resulting in a strongly diluted sample as a consequence of acidification and neutralization.
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used for the extraction, separation, and purification of various metals. Lee et al.10 studied the extraction and separation of hexavalent molybdenum from acidic sulfate solutions using Alamine 336 as an extractant and reported that the percentage extraction of molybdenum with Alamine 336 decreased with increasing acid concentration.
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The molybdenum is precipitated as a sulfide and the precipitate is dissolved in aqua regia and counted on a Ge(Li)-detector. The radiochemical yield is obtained by irradiation of the solution. The method avoids production of sup(99)Mo from induced fission of sup(235)U by performing the metal-silicate separation before irradiation.
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الصين -تشنغ تشو -المنطقة الوطنية للتنمية الصناعية للتكنولوجيا المتطورة، جادة العلوم رقم 169.
الاتصال: 0371-86549132.