آخرین محصولات

Molybdenite Concentrates

Developed and published by the International Molybdenum Association (IMOA), this good practice Guideline for Assaying Molybdenite Concentrates is one of a six-part series on weighing, …

Leaching of impurities for the up-gradation of molybdenum …

The required composition of molybdenum oxide (80% Mo and copper less than 0.50%) was obtained by the leaching of impurities from the roasted molybdenite concentrate (molybdenum oxide) with 1.5% H 2 SO 4 maintaining the S/L ratio 1 at 22 °C. The leach liquor was separated by filtration and hold up to 30 min for the precipitation of partially ...

Release mechanism of impurity potassium in molybdenum concentrate

Download Citation | On Mar 1, 2023, Qi-hang LIU and others published Release mechanism of impurity potassium in molybdenum concentrate treatment process | Find, read and cite all the research you ...

Elimination of iron in molybdenum concentrate via vacuum …

Controllable chlorination of iron in molybdenum concentrate was achieved by a solid chlorination agent directly based on the order of reactions. Vacuum chlorination roasting …

METHOD AND ARRANGEMENT FOR REDUCING IMPURITIES …

The invention provides a method for reducing impurities from roasted molybdenum concentrate (RMC), comprising: performing a first treatment in a first reactor, on a portion of the RMC forming a first treated suspension, the first treatment comprises adding the portion of the RMC to a water-solution, wherein the first treated suspension has a temperature from 10° C. …

Volatilization behavior of impurities in molybdenum …

The research results indicated that, Fe and Cu in Tb metal are medium-volatile impurities, the mass-transfer control steps of Fe and Cu impurities are the hybrid mass …

Preparation of sodium molybdate from molybdenum concentrate …

Thermodynamic analysis indicated the feasibility of oxidation roasting of molybdenum concentrate. The effects of roasting temperature, holding time, and power-to-mass ratio on the oxidation product and leaching product sodium molybdate (Na2MoO4·2H2O) were investigated. ... Iron and aluminum impurities can be effectively separated by adjusting ...

US20200131047A1

Disclosed is a process for the selective removal of copper compounds, and other impurities with respect to molybdenum and rhenium, from concentrates of molybdenite (MoS2) with a copper content that is higher than 0.5% in dry weight. ... concentrate molybdenum leaching stage Prior art date Legal status (The legal status is an ...

Molybdenum processing

Flotation separates the metallic minerals from the gangue this way and - in the case of copper/ molybdenum ores - separates molybdenite from copper sulfide. The resulting MoS 2 concentrate contains between 85 and 92% MoS 2. …

Investigation of Leaching Kinetics of Molybdenum from …

Specific pyrometallurgical and/or hydrometallurgical techniques minimize the impurity concentration of molybdenum compounds. The primary method of processing …

Process for purifying molybdenite concentrates

We claim: 1. A process for purifying molybdenite concentrate for the removal of impurities therefrom, which comprises: providing a reactor with heating and agitator means, which reactor is made of a material that can withstand leaching with the use of ferric chloride containing brine at elevated temperatures and pressures; introducing into said reactor ferrous chloride liquor and …

Process for purifying molybdenum xide

An aqueous solution of nitric acid, ammonium sulfate, and ammonium nitrate is contacted with impure molybdenum concentrate to solubilize a major portion of the impurities. The resulting molybdenum concentrate is digested in ammonium hydroxide under conditions that maximize iron precipitation and removal. The resulting ammonium molybdate ...

Process for purifying molybdenum xide

Processes are described for preparing pure ammonium molybdate from impure roasted molybdenum concentrates. An aqueous solution of nitric acid and ammonium nitrate is contacted with impure molybdenum concentrate to solubilize a major portion of the impurities. The resulting molybdenum concentrate is digested in ammonium hydroxide under conditions that …

Molybdates Formation Pathways and Their Roles on Thermal …

The mainstream oxidative roasting method is facing challenges in processing low-grade molybdenite (MoS2) concentrates, calling for deep understandings toward the behaviors of impurities. This study took pure minerals and reagents as the objects and conducted elaborate experiments and theoretical calculations into the formations of molybdates and their influences …

Method for purifying molybdenum disulfide by leaching molybdenum …

The invention relates to a method for purifying molybdenum disulfide by leaching molybdenum concentrate with chlorate, belonging to the field of wet-process metallurgy. The method comprises the steps of: removing metal sulfide impurities in the molybdenum concentrate used as raw material by heating a leaching solution, wherein the leaching solution is a mixed …

Recovery of molybdenum from spent hydro-refining …

3 produced after roasting contains plenty of impurities (Wilkomirshy, 1979). The impurities ... (1973) have carried out the soda ash roasting of the molybdenum concentrate along with Fe 2O 3. Iron oxide in the presence of soda ash oxidize the concentrate to form a multi-variant compound i.e. Na 2MoO 4 as above. In this study, they converted ...

Experimental Investigation of Molybdenum Disulfide Purification …

Based on previous research work, the impurities in the molybdenum concentrate raw material probably include sulfides and oxides [20, 21]. In this work, by calculating and analyzing the relation between the saturated vapor pressure and temperature of these substances, a vacuum distillation method was proposed to achieve the purification of …

Volatilization behavior of impurities in molybdenum …

Vacuum distillation is an eco-friendly and one-step approach to separate the impurities from molybdenum concentrate. The purification of molybdenum concentrate is …

XEDX9000B …

, in the production process of molybdenum concentrate, the detection of impurity content is very important. XEDX9000B, molybdenum concentrate has a variety of uses in modern life, and plays an important role in the production of high-quality metallurgical ...

Process for purifying molybdenite concentrates

Process for the treatment of molybdenum concentrate also containing copper WO2003048400A2 (en) * : : Cominco Engineering Services Ltd. Process for the treatment of molybdenum concentrate also containing copper KR100849579B1 (en) * : : 코민코 엔지니어링 서비시즈 리미티드

Molybdenum Concentrate Research Articles

Molybdenum Concentrate research articles on R Discovery.Get access to all Molybdenum Concentrate research papers, and take the search out of research.Read all the top research articles on Molybdenum Concentrate, get personalised research discovery with precise and fast paper suggestions.Join us and download our app today!

Opportunities for recovery augmentation process as applied …

Byproduct Molybdenum Concentrate Quality. Before molybdenum can be used for either chemicals or steels, the molybdenite must be oxidized in a roaster to form molybdic oxide. Roasters generally charge toll fees of anywhere between $0.20 and $0.40 per lb for toll roasting, $0.10 to $0.20 for FeCl3 leaching, and $0.05 to $0.10 for packaging ...

IMPROVEMENT OF MOLYBDENITE CONCENTRATE …

In order to investigate the oxidation roasting of molybdenite concentrate in pure oxygen atmosphere, experiments at 673, 723, 773, 873 and 973 K were carried out.

Unroasted Molybdenum Concentrates

Unroasted Molybdenum Concentrates 1. Introduction Molecular Formula: MoS2 Molecular weight: 160.07 Appearance: black, lead-silvery gray 2. Specification We could provide the products with Mo 40% min and other impurities content as per customer's requirements. 3. Packaging 1000kg big bags or 250kg steel drums on pallets. In big bags In steel ...

How Is Molybdenum Mined and Processed?

The large rotary rake arm constantly turns the sparry molybdenum concentrate to promote the chemical reaction, ... Molybdenum calcined sand is dissolved in an alkaline medium (ammonium hydroxide or sodium hydroxide) and impurities are removed by precipitation and filtration and/or solvent extraction. The obtained ammonium molybdate solution is ...

CN114845956A

The invention provides a method for reducing impurities in Roasted Molybdenum Concentrate (RMC), which comprises the following steps: subjecting a portion of the RMC to a first treatment in a first reactor to form a first treated suspension, the first treatment comprising adding a portion of the RMC to an aqueous solution, wherein the first treated suspension has a temperature of 10 …

Molybdenum Ore Beneficiation Process Technology

The beneficiation process of molybdenum ore is mainly performed by flotation separation methods, and the recovered molybdenum mineral is molybdenite(MoS2).Sometimes in order to improve the quality of molybdenum concentrate and remove impurities, the concentrated molybdenite would be subjected to a further step of beneficiation processing.

Release mechanism of impurity potassium in …

Release mechanism of impurity potassium in . molybdenum concentrate treatment process . Qi-hang LIU1,2, Qu HU1, Di WANG 1, Shuang-ping YANG 1, Kai HE2. 1. School of Metallurgical Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; 2. Technical Centre, Jinduicheng Molybdenum Co., Ltd., Xi'an 710077, China

Volatilization behavior of impurities in molybdenum …

Recent progress on research of molybdenite flotation: A review. To purify crude ZnCl2, which can be recovered by selective chlorination of electric arc furnace dust, vacuum …

Removal Mechanism of Mineral Impurities in Molybdenum …

The removal of impurities in molybdenum concentrate has become a new challenge for enterprises due to the cancellation of pickling. Whether impurity minerals can be converted into soluble ions during roasting is important for the impurity removal by current …

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