molybdenum flotation purifying

molybdenum flotation purifying

  • US4083921A - Purifying molybdenum flotation concentrates ...

    Copper, iron, and lead impurities are removed from molybdenum flotation concentrates by mixing the feed concentrates with a nonvolatile chloride salt, heating the mixture to a temperature of from about 200° to 350° C for a time sufficient to activate the lead impurities in the concentrates so that they can be leached therefrom during the subsequent leach step, and leaching copper, iron, and ...

  • Cited by: 17
  • Molybdenum processing Britannica

    Molybdenum and copper-molybdenum porphyries are mined by open-pit or by underground methods. Once the ore has been crushed and ground, the metallic minerals are then separated from gangue minerals (or the molybdenum and copper from each other) by flotation

  • US3694147A - Process for the purification of molybdenum ...

    US3694147A US3694147DA US3694147A US 3694147 A US3694147 A US 3694147A US 3694147D A US3694147D A US 3694147DA US 3694147 A US3694147 A US 3694147A Authority US United States Prior art keywords leaching molybdenum concentrate solution molybdenum oxide Prior art date 1971-11-18 Legal status (The legal status is an assumption and is not a legal conclusion.

  • Cited by: 14
  • Purifying molybdenum flotation concentrates - Kennecott ...

    Apr 11, 1978  Purifying molybdenum flotation concentrates . United States Patent 4083921 . Abstract: Copper, iron, and lead impurities are removed from molybdenum flotation concentrates by mixing the feed concentrates with a nonvolatile chloride salt, heating the mixture to a temperature of from about 200° to 350° C for a time sufficient to activate the ...

  • Molybdenum Flotation - Mineral Processing Metallurgy

    A Molybdenum Flotation case study with about 6% of the molybdenum contained in the feed is present as an oxide form and about 90% of this is not recovered to the flotation concentrate. Recovery of molybdenum into the rougher concentrate varied between 90 to 95% at a concentrate grade of 2.5 to 3.7% molybdenum. The rougher concentrate can be upgraded to a marketable grade molybdenum

  • Molybdenum Ore Processing by Flotation

    This molybdenum flotation circuit, based on 250-500 tons per 24 hours is designed for low-grade molybdenum ore having high-grade streaks and with pyrite-quartz gangue.It is also basically sound for many other friable sulphide ores, such as antimony, silver and even some lead ores. The basic ideas stressed in this moly flotation flowsheet are the importance of simplicity and the quick removal ...

  • Purifying molybdenum flotation concentrates - Kennecott ...

    Apr 11, 1978  Purifying molybdenum flotation concentrates . United States Patent 4083921 . Abstract: Copper, iron, and lead impurities are removed from molybdenum flotation concentrates by mixing the feed concentrates with a nonvolatile chloride salt, heating the mixture to a temperature of from about 200° to 350° C for a time sufficient to activate the ...

  • Authors: Rolf Jurgen WeselyAffiliation: Kennecott Utah Copper
  • Molybdenum Solvay

    Solvay provides collectors and extractants that improve floatability and selectivity for molybdenum. Flotation. Molybdenite is the most common molybdenum mineral. Solvay's AERO® brand collectors/promoters enhance and improve the natural floatability of molybdenite.

  • Polymeric Depressants in Purification by Flotation of ...

    Polymeric Depressants in Purification by Flotation of Molybdenite P.F.A. BRAGAa, b, A.P. CHAVESb, A.B. LUZa, and S.C.A FRANÇAa a bCoordination of Mineral Processes, CETEM – Centre for Mineral Technology, Brazil. b Department of Mining Engineering, Polytechnic School of the University of São Paulo, Brazil. ABSTRACT In Brazil, there are no official reserves of molybdenum, and the

  • (PDF) The Effect of Water Quality on Molybdenum Flotation

    PDF The effect of water quality on the grade and recovery of molybdenum flotation concentration from a molybdenite (MoS2) bearing ore containing approximately 0.2 percent by weight molybdenum ...

  • Froth flotation - Wikipedia

    Froth flotation is a process for selectively separating hydrophobic materials from hydrophilic. This is used in mineral processing, paper recycling and waste-water treatment industries. Historically this was first used in the mining industry, where it was one of the great enabling technologies of the 20th century.

  • Molybdenum - Wikipedia

    Molybdenum-98 is the most abundant isotope, comprising 24.14% of all molybdenum. Molybdenum-100 has a half-life of about 10 19 y and undergoes double beta decay into ruthenium-100. Molybdenum isotopes with mass numbers from 111 to 117 all have half-lives of approximately 150 ns.

  • Polymeric depressants in purification by flotation of ...

    However, complete separation of molybdenum by flotation is very difficult, thus, molybdenum concentrates produced by this route requires a further step of chemical purification in order to reduce ...

  • Molybdenum Processing - imoafo

    The milled ore/gangue powder is mixed with a liquid and aerated in the flotation step. The less dense ore rises in the froth to be collected, while the gangue sinks to be discarded. Flotation separates the metallic minerals from the gangue this way and – in the case of copper/ molybdenum ores – separates molybdenite from copper sulphide.

  • remove molybdenum by flotation - LIMING Mining

    Patent US4083921 – Purifying molybdenum flotation concentrates . Copper, iron, and lead impurities are removed from molybdenum flotation concentrates by mixing the feed concentrates with a nonvolatile chloride salt, heating »More detailed

  • MOLYBDENUM, FERROMOLYBDENUM, AND AMMONIUM

    Molybdenum and molybdenum products, including ammonium molybdate, are made by roasting concentrated ore, followed by purification and/or reduction. Ferromolybdenum is typically produced by reaction of technical grade molybdic oxide and iron oxide with a conventional metallothermic process using silicon and/or aluminum as the reductant.

  • Polymeric depressants in purification by flotation of ...

    However, complete separation of molybdenum by flotation is very difficult, thus, molybdenum concentrates produced by this route requires a further step of chemical purification in order to reduce ...

  • remove molybdenum by flotation - LIMING Mining

    Patent US4083921 – Purifying molybdenum flotation concentrates . Copper, iron, and lead impurities are removed from molybdenum flotation concentrates by mixing the feed concentrates with a nonvolatile chloride salt, heating »More detailed

  • Extractive Metallurgy of Non-Ferrous Metals: Part Two ...

    Extractive metallurgy is the practice of extracting metal from ore, purifying it, and recycling it. Most metals found in the Earth's crust exist as oxide and sulfide minerals. ... This paper discusses the various steps in the extractive metallurgy of molybdenum, from flotation of sulfide concentrate to reduction of pure oxide to molybdenum metal.

  • Flotation - Outotec

    Harness the power of our experience with Outotec flotation plants. With expertise based on over 100 years in flotation technology, and over 10,000 flotation cells installed around the world, Outotec has the experience you need to maximize your operations’ productivity and efficiency.

  • Materials Witness: Butte, America (part 2 - Montana Resources)

    Aug 07, 2014  We didn't get to tour the post-flotation purification plant where the molybdenum-rich ore from the copper-rich ore. Here the molydenum-rich ore floats in the flotation tanks, and the copper-rich sinks. The copper leaves here and is dried to about 25% pure before being shipped off by railcar for smelting in (mostly) China.

  • Evaluation of the replacement of NaCN with depressant ...

    Therefore, the bulk concentrates processes characteristics of a higher grade of molybdenum but a lower grade of copper. The bulk concentrate, which was obtained from the China Molybdenum Co., Ltd, with 0.95% Cu and 7.23% Mo collected from a day shift, was used for the flotation separation of copper-molybdenum sulphides in all of the flotation ...

  • 1 Froth Flotation – Fundamental Principles

    1 1 Froth Flotation – Fundamental Principles Froth flotation is a highly versatile method for physically separating particles based on differences in the ability of air bubbles to selectively adhere to specific mineral surfaces in a

  • Copper Removal from Molybdenite by Sulfidation-Leaching ...

    Abstract. Molybdenite (MoS 2) concentrates are produced by differential flotation from bulk copper-molybdenum concentrates.However, complete separation of molybdenum by flotation is very difficult, thus, molybdenum concentrates produced by this route requires a further step of chemical purification in order to reduce the copper content to a suitable level for marketing.

  • MOLYBDENUM, FERROMOLYBDENUM, AND AMMONIUM

    Molybdenum and molybdenum products, including ammonium molybdate, are made by roasting concentrated ore, followed by purification and/or reduction. Ferromolybdenum is typically produced by reaction of technical grade molybdic oxide and iron oxide with a conventional metallothermic process using silicon and/or aluminum as the reductant.

  • Copper-Molybdenum ores - Danafloat

    Recovery of copper is by standard flotation reagents identified in the copper ore flotation description. Molybdenum will float naturally with the copper but can be crowded in the froth by the copper mineralization and use of a moly collector (such as diesel oil, kerosene, refined oils, pine oil or xanthate ester) enhances its floatability.

  • Mineral Processing Solutions - WesTech Engineering, Inc.

    Mineral Processing. ... Copper and Molybdenum Flotation Circuit Copper / Molybdenum Flotation Circuit . Molybdenum (moly) is often produced as a byproduct of copper mining. Copper is used for electronics, construction, and metal alloys. ... After neutralization, clear zinc sulfate solution flows from thickeners to the zinc dust purification ...

  • Selective depression effect in flotation separation of ...

    2,3-disulfanylbutanedioic acid (DMSA) was found to be a selective depressant in the flotation separation of copper– molybdenum sulfides. The flotation results suggest that a low dosage of DMSA has a strong depression effect on chalcopyrite in the pH range between 4 and 12.

  • Estimation of Copper and Molybdenum Grades and

    grades and their recoveries of flotation concentrate based on operational parameters of the industrial flotation process. In this work, operational parameters were pH, collector, frother and F-Oil concentration, size percentage of feed passing 75 microns, moisture content in the feed, solid percentage, and grade of copper, molybdenum and

  • Molybdenum compounds in catalysts

    Molybdenum-based catalysts have a number of important applications in the petroleum and plastics industries. A major use is in the hydrodesulfurisation (HDS) of petroleum, petrochemicals and coal-derived liquids. The catalyst comprises MoS 2 supported on alumina and promoted by cobalt or nickel and is prepared by sulfiding cobalt and molybdenum oxides on alumina.

  • Evaluation of the replacement of NaCN with depressant ...

    Therefore, the bulk concentrates processes characteristics of a higher grade of molybdenum but a lower grade of copper. The bulk concentrate, which was obtained from the China Molybdenum Co., Ltd, with 0.95% Cu and 7.23% Mo collected from a day shift, was used for the flotation separation of copper-molybdenum sulphides in all of the flotation ...

  • 1 Froth Flotation – Fundamental Principles

    1 1 Froth Flotation – Fundamental Principles Froth flotation is a highly versatile method for physically separating particles based on differences in the ability of air bubbles to selectively adhere to specific mineral surfaces in a

  • Copper Removal from Molybdenite by Sulfidation-Leaching ...

    Abstract. Molybdenite (MoS 2) concentrates are produced by differential flotation from bulk copper-molybdenum concentrates.However, complete separation of molybdenum by flotation is very difficult, thus, molybdenum concentrates produced by this route requires a further step of chemical purification in order to reduce the copper content to a suitable level for marketing.

  • Mineral Processing Solutions - WesTech Engineering, Inc.

    Mineral Processing. ... Copper and Molybdenum Flotation Circuit Copper / Molybdenum Flotation Circuit . Molybdenum (moly) is often produced as a byproduct of copper mining. Copper is used for electronics, construction, and metal alloys. ... After neutralization, clear zinc sulfate solution flows from thickeners to the zinc dust purification ...

  • Selective depression effect in flotation separation of ...

    2,3-disulfanylbutanedioic acid (DMSA) was found to be a selective depressant in the flotation separation of copper– molybdenum sulfides. The flotation results suggest that a low dosage of DMSA has a strong depression effect on chalcopyrite in the pH range between 4 and 12.

  • Estimation of Copper and Molybdenum Grades and

    grades and their recoveries of flotation concentrate based on operational parameters of the industrial flotation process. In this work, operational parameters were pH, collector, frother and F-Oil concentration, size percentage of feed passing 75 microns, moisture content in the feed, solid percentage, and grade of copper, molybdenum and

  • The use of dextrin in purification by flotation ... - DeepDyve

    Mar 10, 2014  Read "The use of dextrin in purification by flotation of molybdenite concentrates, International Journal of Mineral Processing" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

  • Published in: International Journal of Mineral Processing 2014Authors: Paulo Fernando Almeida Braga Arthur Pinto Chaves Adao Benvindo Da Luz SilviAffiliation: University of Sao PauloAbout: Dextrin Talc
  • Copper-Molybdenum ores - Danafloat

    Recovery of copper is by standard flotation reagents identified in the copper ore flotation description. Molybdenum will float naturally with the copper but can be crowded in the froth by the copper mineralization and use of a moly collector (such as diesel oil, kerosene, refined oils, pine oil or xanthate ester) enhances its floatability.

  • Molybdenum compounds in catalysts

    Molybdenum-based catalysts have a number of important applications in the petroleum and plastics industries. A major use is in the hydrodesulfurisation (HDS) of petroleum, petrochemicals and coal-derived liquids. The catalyst comprises MoS 2 supported on alumina and promoted by cobalt or nickel and is prepared by sulfiding cobalt and molybdenum oxides on alumina.

  • Modification of Molybdenum Autoclave Process (MAP) Plant ...

    Modification of Molybdenum Autoclave Process (MAP) Plant: Kennecott Utah Copper LLC. The MAP facility is currently under construction, and commissioning is expected to start in 2013. Public comment is being sought through March 11, 2013 on Kennecott’s request to modify the design of the MAP plant.

  • Froth Flotation Principles

    The Froth Flotation Machine and its operating principles are universally used for all types of flotation problems.This machine finds a wide acceptance due to its flexibility in construction, which allows the machine to be adjusted to handle pulps with divergent physical characteristics, as well as the common and intricate metallurgical problems which confront the present day operator.

  • OPTIMIZATION OF FLOTATION PARAMETERS FOR

    determined as 5.5–6.5 in molybdenum flotation, while molybdenite might be depressed at high pH due to calcium ions. Besides, the ferrous and ferric species at higher pH values caused depression of molybdenite too (Castro and Bobadilla, 1995). In this study, the determination of the flotation behavior of a molybdenum ore was

  • Copper–Molybdenum Sulphide Ore by Flotation

    Copper–Molybdenum Sulphide Ore by Flotation Zhixiang Chen 1, Guohua Gu 1,*, Shuangke Li 1,*, ... without further purification. Hydrochloric acid (HCl) and sodium hydroxide (NaOH) were used to regulate the pulp pH. All of the reagents used in the tests were of analytical grade. Deionized water

  • Molybdenum Beneficiation Equipment Prices - Xinhai

    Molybdenum ore is an essential strategic resource. Molybdenum ore beneficiation equipment includes crusher, screening, grinder, classifier, flotation, thickener, filter and other equipment.