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leaching molybdenum oxidative :

Oxidative leaching kinetics of molybdenum-uranium ore

of low grade molybdenum ores including oxidative roasting followed by acidic leaching [1–3], pressure oxidative leaching [4–6], nitric acid decomposition [7– 9], sodium hypochlorite [5,10,11] and electro-oxidation [12–15]. Sulfuric acid has been investigated by Landa [16] for leaching molybdenum and arsenic from uranium ore and mill ...

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Kinetics of pressure oxidative leaching of molybdenite ...

2012-1-1  The molybdenum leaching efficiency was calculated as following: (5) Leaching efficiency = m + m ′ m 0 × 100 where m was the weight of molybdenum in liquor, m′ was the weight of molybdenum in precipitated molybdic oxide and m 0 was the weight of molybdenum in molybdenite concentrate.

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Kinetics of pressure oxidative leaching of molybdenite ...

Molybdenum and rhenium can be simultaneously leached by pressure oxidation leaching (POX), which is divided into two types: acid pressure leaching [9] [10] [11] and alkaline pressure leaching ...

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Kinetics of pressure oxidative leaching of molybdenite ...

2019-8-8  sity, acid concentration and temperature on the leaching rate of the molybdenum were studied. It was found that about 85% of molybdenite was oxidized to molybdic oxide precipitate with remaining molybdenum dis-solved in the leaching liquor. Analysis of experimental data showed that the reaction is chemically controlled

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Oxidative leaching kinetics of molybdenum-uranium ore in H

2019-4-23  Oxidative leaching kinetics of molybdenum-uranium ore in H 展示更多 10.1007/s11705-013-1317-6 引用这篇文章 摘要 The processing of molybdenum-uranium ore in a sulfuric acid ...

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Oxidative leaching kinetics of molybdenum-uranium

Naguman et al. (2009) reported a process for leaching oxidizing molybdenum products; the results showed that by using molybdenum product roasted at 550 C, with linear velocity of the air blown ...

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(PDF) Kinetics of pressure oxidative leaching of ...

Kinetics of pressure oxidative leaching of molybdenite concentrate by nitric acid. Hydrometallurgy, 2012. Mahdi Mozammel

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[PDF] KINETICS OF PRESSURE OXIDATIVE LEACHING

The current study was carried out to investigate the kinetics of reactions for the pressure oxidative leaching of a molybdenite concentrate in less than one hour. The effects of oxygen pressure, stirring speed, pulp density, acid concentration and temperature on the leaching rate of the molybdenum were studied. It was found that about 85% of molybdenite was oxidized to molybdic oxide ...

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Leaching molybdenum from a low-grade roasted

2019-3-7  The leaching molybdenum from low-grade molybdenite concentrate has been widely investigated, mainly in relation to acidic oxidative leaching for the direct extraction of molybdenum [

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Hydrometallurgical Treatment for Valuable Metals

2021-3-12  Oxidative Leaching of an Unroasted Catalyst Using H2O2 Industrial Engineering Chemistry Research This study deals with the feasibility of the oxidative leaching of molybdenum and cobalt sulphides contained in a spent hydrodesulphurisation catalyst using H2O2 in acidic medium.

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Oxidative leaching behavior of metalliferous black shale ...

2016-1-29  The leaching kinetics of molybdenum, nickel and iron from metalliferous black shale shows that the leaching rate is controlled by a chemical reaction through a layer on the unreacted shrinking core. The leaching process follows the kinetics model 1−(1−a)1/3=kt with apparent activation energies of 34.50,

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Oxidative leaching kinetics of molybdenum-uranium

Abstract. The processing of molybdenum-uranium ore in a sulfuric acid solution using hydrogen peroxide as an oxidant has been investigated. The leaching temperature, hydrogen peroxide concentration, sulfuric acid concentration, leaching time, particle size, liquid-to-solid ratio and agitation speed all have significant effects on the process.

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Oxidative leaching kinetics of molybdenum-uranium ore in H

2019-4-23  Oxidative leaching kinetics of molybdenum-uranium ore in H 展示更多 10.1007/s11705-013-1317-6 引用这篇文章 摘要 The processing of molybdenum-uranium ore in a sulfuric acid ...

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[PDF] KINETICS OF PRESSURE OXIDATIVE LEACHING

The current study was carried out to investigate the kinetics of reactions for the pressure oxidative leaching of a molybdenite concentrate in less than one hour. The effects of oxygen pressure, stirring speed, pulp density, acid concentration and temperature on the leaching rate of the molybdenum were studied. It was found that about 85% of molybdenite was oxidized to molybdic oxide ...

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Oxidative leaching kinetics of molybdenum-uranium

Oxidative leaching kinetics of molybdenum-uranium ore in H Show More 10.1007/s11705-013-1317-6. Cite this article Abstract The processing of molybdenum-uranium ore in a sulfuric acid solution using hydrogen peroxide as an oxidant has been investigated. ...

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Oxidative leaching behavior of metalliferous black shale in ...

The leaching kinetics of molybdenum, nickel and iron from metalliferous black shale shows that the leaching rate is controlled by a chemical reaction through a layer on the unreacted shrinking core. The leaching process follows the kinetics model 1-(1-a) 1/3 =kt with apparent activation energies of 34.50, 43.14 and 71.79 kJ/mol for Mo, Ni and Fe, respectively.

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(PDF) METALS RECOVERY FROM MOLYBDENITE

2020-5-28  PDF Mineral resources today are increasingly determined by the concept of "persistent". The reason for their difficult opening is in the composition... Find, read and cite all the research you ...

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Method for leaching nickel and molybdenum from

The invention belongs to the field of metallurgical chemical industry, and particularly relates to a method for leaching nickel and molybdenum from an amorphous nickel-molybdenum sulfide mineral by oxidative conversion. According to the technical scheme, the method comprises the following steps: mixing the amorphous nickel-molybdenum sulfide mineral which is finely ground with water to prepare ...

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Hydrometallurgical Treatment for Valuable Metals

2021-3-12  The oxidative leaching of the unroasted CoMo/Al2O3 spent catalyst was performed without previous grinding. In a single-step, at pH = 1.3 with a stoichiometric factor equal to 2.4, an L/S ratio equal to 7.5, and an H2O2 concentration of 3.75 molL−1, it was possible to recover molybdenum and cobalt simultaneously with leaching yields of 90% ...

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Oxidative leaching in French - English-French Dictionary

Example sentences with "oxidative leaching", translation memory. add example. en Method of oxidative leaching of molybdenum - rhenium sulfide ores and/or concentrates. patents-wipo. fr Procédé de lixiviation par oxydation de minerais et/ou concentrés de sulfure de molybdène-rhénium.

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Kinetics of pressure oxidative leaching of molybdenite ...

2019-8-8  Pressure leaching Nitric acid Kinetics The current study was carried out to investigate the kinetics of reactions for the pressure oxidative leaching of a molybdenite concentrate in less than one hour. The effects of oxygen pressure, stirring speed, pulp den-sity, acid concentration and temperature on the leaching rate of the molybdenum were ...

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Oxidative leaching kinetics of molybdenum-uranium ore in H

2019-4-23  Oxidative leaching kinetics of molybdenum-uranium ore in H 展示更多 10.1007/s11705-013-1317-6 引用这篇文章 摘要 The processing of molybdenum-uranium ore in a sulfuric acid ...

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Oxidative leaching behavior of metalliferous black shale ...

2016-1-29  The leaching kinetics of molybdenum, nickel and iron from metalliferous black shale shows that the leaching rate is controlled by a chemical reaction through a layer on the unreacted shrinking core. The leaching process follows the kinetics model 1−(1−a)1/3=kt with apparent activation energies of 34.50,

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US Patent for Method of oxidative leaching of

A method for leaching molybdenum and/or rhenium from a sulfide ore and/or concentrate containing such, the method comprising the steps of: Exposing the ore and/or concentrate to an aqueous solution of chlorine-based oxidizing species in which the sum of the concentrations of hypochlorite and hypochlorous acid is at least 10 mol % of the chlorine-based oxidizing species; Allowing and/or ...

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Oxidative leaching kinetics of molybdenum-uranium

Oxidative leaching kinetics of molybdenum-uranium ore in H Show More 10.1007/s11705-013-1317-6. Cite this article Abstract The processing of molybdenum-uranium ore in a sulfuric acid solution using hydrogen peroxide as an oxidant has been investigated. ...

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KR20150051691A - Leaching method of molybdenum

The present invention relates to a leaching method of molybdenum from sulfide mineral which contains molybdenum and copper using electrolytic oxidation and, more specifically, relates to the a leaching method of molybdenum from sulfide mineral which contains molybdenum and copper using electrolytic oxidation which immerses the sulfide mineral which contains the molybdenum and the copper to a ...

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Reaction Rate Study: Oxidative Pressure Leaching

In a typical oxidative pressure leaching process, the mass transfer that is required to sustain a heterogeneous reaction takes place at the boundary between two phases, which is called the reaction interface. ... Turel and Patil (1996) [112] have established a rapid and selective method for the extraction of molybdenum with malachite green into ...

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Review Molybdenum Recovery from Mineral Raw

2015-12-27  2.2.2. Autoclave-oxidative leaching of MoS2 concentrates with pyrolusite product According to Kholmogorov et al. (1985, 1994), this kind of leaching can be described by the following reaction: MoS2(s) + 9MnO2(s) + 8H2S4(l) MoO2SO4(s) + 9MnSO4(l) + 8H2O t 150 oC (4) Then manganese and molybdenum are separated:

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Co-volatilizing-water leaching process for efficient utilization ...

2020-1-23  Rhenium-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 experimental and thermodynamic

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Oxidative Leaching Kinetics of Vanadium from the

2020-4-7  Oxidative-alkaline leaching of vanadium from vanadium-chromium-reducing residues with K2Cr2O7 was investigated in this paper. The effects of processing parameters including dosage of NaOH, dosage of K2Cr2O7, reaction time, and reaction temperature on the leaching efficiency of vanadium were studied. The results simulated by response surface methodology indicated that vanadium leaching

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