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

US3957946A Molybdenum oxide purification process

A process for purifying concentrates of molybdenum oxide containing a variety of naturally-occurring contaminating metals, such as potassium, copper, calcium, magnesium, iron, aluminum, lead, zinc, bismuth, and the like, as well as compounds thereof, by roasting the impure concentrate at an elevated temperature in an oxygen atmosphere to convert sub-oxides of molybdenum to molybdenum

US4046852A Purification process for technical grade

A process for purifying an impure molybdenum oxide concentrate feed material to remove therefrom the predominant portion of contaminating metals present by autoclaving at an elevated temperature under an oxygen partial pressure of at least about 100 psi, a slurry of the particulated feed material in an aqueous acid solution containing a mineral acid for a period of time sufficient to convert

US4612172A Purification of molybdenum Google Patents

A process is disclosed for removing potassium from a relatively impure molybdenum trioxide and forming a molybdenum compound of high purity. The process involves first contacting the impure molybdenum trioxide with an acid leach which consists essentially of a mineral acid and the ammonium salt of the mineral acid in a weight ratio of above about 3 to 1 of acid leach to molybdenum trioxide at

Molybdenum oxide purification process Amax Inc.

A process for purifying concentrates of molybdenum oxide containing a variety of naturally-occurring contaminating metals, such as potassium, copper, calcium, magnesium, iron, aluminum, lead, zinc, bismuth, and the like, as well as compounds thereof, by roasting the impure concentrate at an elevated temperature in an oxygen atmosphere to convert sub-oxides of molybdenum to molybdenum

A novel technology for molybdenum extraction from

Oct 01, 2009 The commercial route for the extraction of molybdenum from its sulphide mineral molybdenite involves roasting of the concentrate, purification of the resultant calcine, either by distillation of MoO 3, or by a hydrometallurgical route, and,

Preparation of ammonium molybdate by oxidation roasting of

To a certain extent, it will increase the generation of cracks, so as to promote the reaction and improve the activity of the reaction; Microwave roasting of molybdenum concentrate can effectively reduce the sulfur content in molybdenum trioxide produced by oxidation roasting of molybdenum concentrate, which makes the subsequent purification of

MBR Metals

Roasted Molybdenum concentrate The resulting roasted Mo concentrate typically contains minimum ab. 57% molybdenum, and less than 0.1% S. Between 30-40% of Global Technical Mo Oxide production is processed into Ferromolybdenum and ab. 25-30% into different chemical products (Chemically pure Molybdic Oxides and Molybdates).

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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.

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

US3957946A Molybdenum oxide purification process

A process for purifying concentrates of molybdenum oxide containing a variety of naturally-occurring contaminating metals, such as potassium, copper, calcium, magnesium, iron, aluminum, lead, zinc, bismuth, and the like, as well as compounds thereof, by roasting the impure concentrate at an elevated temperature in an oxygen atmosphere to convert sub-oxides of molybdenum to molybdenum

US4046852A Purification process for technical grade

A process for purifying an impure molybdenum oxide concentrate feed material to remove therefrom the predominant portion of contaminating metals present by autoclaving at an elevated temperature under an oxygen partial pressure of at least about 100 psi, a slurry of the particulated feed material in an aqueous acid solution containing a mineral acid for a period of time sufficient to convert

US4612172A Purification of molybdenum Google Patents

A process is disclosed for removing potassium from a relatively impure molybdenum trioxide and forming a molybdenum compound of high purity. The process involves first contacting the impure molybdenum trioxide with an acid leach which consists essentially of a mineral acid and the ammonium salt of the mineral acid in a weight ratio of above about 3 to 1 of acid leach to molybdenum trioxide at

Molybdenum oxide purification process Amax Inc.

A process for purifying concentrates of molybdenum oxide containing a variety of naturally-occurring contaminating metals, such as potassium, copper, calcium, magnesium, iron, aluminum, lead, zinc, bismuth, and the like, as well as compounds thereof, by roasting the impure concentrate at an elevated temperature in an oxygen atmosphere to convert sub-oxides of molybdenum to molybdenum

A novel technology for molybdenum extraction from

Oct 01, 2009 The commercial route for the extraction of molybdenum from its sulphide mineral molybdenite involves roasting of the concentrate, purification of the resultant calcine, either by distillation of MoO 3, or by a hydrometallurgical route, and,

Preparation of ammonium molybdate by oxidation roasting of

To a certain extent, it will increase the generation of cracks, so as to promote the reaction and improve the activity of the reaction; Microwave roasting of molybdenum concentrate can effectively reduce the sulfur content in molybdenum trioxide produced by oxidation roasting of molybdenum concentrate, which makes the subsequent purification of

MBR Metals

Roasted Molybdenum concentrate The resulting roasted Mo concentrate typically contains minimum ab. 57% molybdenum, and less than 0.1% S. Between 30-40% of Global Technical Mo Oxide production is processed into Ferromolybdenum and ab. 25-30% into different chemical products (Chemically pure Molybdic Oxides and Molybdates).

[randpic] US3694147A Process for the purification of molybdenum US3694147A US3694147DA US3694147A US 3694147 A US3694147 A US 3694147A US 3694147D

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Henan TON Heavy Industry Science & Technology Co., Ltd China Manufacturer with main products:CRUSHER ,STONE CRUSHER ,PORTABLE/MOBILE CRUSHER ,SCREEN ,GRINDING MILL ,CRUSHING SCREENING PLANT ,CONE/JAW/IMPACT CRUSHER ,mining machine used in Construction aggregate,materials including sand,gravel,crushed stone,slag,or recycled crushed

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The cone crusher has standard type and short head type, the standard type is suitable to medium size and the short head type for medium and fine crushing. HP Series Multi-cylinder Hydraulic Cone Crusher is one of advanced cone crushers in China, which is developed and manufactured by our company.

[randpic] China Stone Impact Crusher, Stone Impact Crusher Aug 20, 2021 China Stone Impact Crusher manufacturers Select 2021 high quality Ston

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