roasting rhenium flotation

Roasting oxidation behaviors of ReS2 and MoS2 in

2019-4-1  Trans. Nonferrous Met. Soc. China 29(2019) 840−848 Roasting oxidation behaviors of ReS2 and MoS2 in powdery rhenium-bearing, low-grade molybdenum concentrate Xiao-hui FAN, Qiong DENG, Min GAN, Xu-ling CHEN School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China Received 21 June 2018; accepted 24 December 2018 Abstract: The

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Application of thermal analysis to the rhenium recovery ...

2018-3-3  Rhenium production from copper and molybdenum sulphides involves the use of a pyrometallurgical process. In traditional pyrometallurgy processes, gases emissions produce unacceptable air pollution and damage the extractive metallurgy equipment, leading to high production cost. Due to the environmental disadvantages presented by the oxidizing roasting, in this paper the

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RECOVERY OF RHENIUM AND MOLYBDENUM VALUES

An improvement in the recovery of molybdenum and rhenium values by roasting molybdenite which comprises preheating finely divided molybdenite concentrate and passing it downwardly through a vertically oriented reaction zone countercurrent to an upwardly traveling stream of high temperature oxygen, oxygen enriched air or oxygen-sulfur dioxide mixture heated by its passage through a roasting ...

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Freeport-McMoRan Sierrita Inc. - legacy.azdeq.gov

2016-4-15  crushing and flotation followed by differential flotation, leaching and roasting of molybdenum disulfide, rhenium recovery, molybdenum disulfide production and packaging, molybdenum trioxide production and packaging, leach stockpiles, and solution extraction/electrowinning facilities.

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Metals Free Full-Text Separation of Rhenium from Lead ...

Lead-rich molybdenite is a typical rhenium-bearing molybdenum resource in China, which has not been efficiently utilized due to its high contents of lead and gangue minerals. In this study, hydrochloric acid was used for preliminarily removing lead and calcite from a lead-rich molybdenite concentrate. Oxidative roasting-ammonia leaching was then carried out for separation of rhenium and ...

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ELECTRO-OXIDATIVE METHOD FOR THE RECOVERY OF

More particularly, it relates to the dissolution of molybdenum and rhenium values in sulfide and associated source materials by an electro-oxidation process. The major sources of molybdenum and rhenium are sulfide-type ores and the like. The classical recovery method is the use of multi-stage flotation techniques and roasting.

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Aquifer Protection Permit Place ID 1567, LTF 62622 ...

2017-5-17  crushing and flotation followed by differential flotation, leaching and roasting of molybdenum disulfide, rhenium recovery, molybdenum disulfide production and packaging, molybdenum trioxide production and packaging, leach stockpiles, and solution extraction/electrowinning facilities. Sierrita produces copper concentrate, cathode copper and ...

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Recent advances of rhenium separation and enrichment in ...

2018-3-22  Recent advances of rhenium separation and enrichment in China: Industrial processes and laboratory trials[J]. Chinese Chemical Letters , 2018, 29(3): 345-352. doi: 10.1016/j.cclet.2018.01.001

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(PDF) Pressure Oxidation of Molybdenum Concentrates

2013-4-23  During POX, the oxidation of molybdenum (Mo) is above 98%. More than 95% of the rhenium (Re) and 15% to 20% of the Mo are leached into solution. The sulfur in the concentrate is converted to H2SO4 ...

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Dave Wernke - South Dakota School of Mines and

Managed a staff of 125 maintenance and operations employees in a diverse plant that included by-product molybdenum flotation, molybdenum leaching and roasting,

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DRAFT PERMIT azdeq

2016-4-15  flotation, and pure copper is produced through solution extraction and electrowinning. Copper sulfate is produced through solution extraction and crystallization. Molybdenum trioxide is produced through roasting. Rhenium is also recovered in the molybdenum roasting operations.

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US4523948A - Roasting of molybdenite concentrates ...

A method is provided for treating molybdenum concentrates in a roasting furnace having a first roasting zone and at least a second roasting zone, the concentrate containing residual flotation oil in an amount over 2% by weight which during roasting inhibits the roasting capacity of the furnace. The improvement resides in deoiling the molybdenite concentrate, feeding the deoiled concentrate to ...

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Rhenium in the Aitik Cu-Au-Ag-(Mo) deposit

2016-10-4  Rhenium, which is a unique element discovered back in 1925, ... concentrate after the copper flotation process (Fatai 2008). 2 Figure 1 Location map of Aitik, Liikavaara and Salmijärvi deposits. ... from the roasting of the molybdenite in porphry copper deposits (USGS 2008). Therefore, the

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RECOVERY OF RHENIUM AND MOLYBDENUM VALUES

An improvement in the recovery of molybdenum and rhenium values by roasting molybdenite which comprises preheating finely divided molybdenite concentrate and passing it downwardly through a vertically oriented reaction zone countercurrent to an upwardly traveling stream of high temperature oxygen, oxygen enriched air or oxygen-sulfur dioxide mixture heated by its passage through a roasting ...

More

Roasting oxidation behaviors of ReS2 and MoS2 in

2019-4-1  Trans. Nonferrous Met. Soc. China 29(2019) 840−848 Roasting oxidation behaviors of ReS2 and MoS2 in powdery rhenium-bearing, low-grade molybdenum concentrate Xiao-hui FAN, Qiong DENG, Min GAN, Xu-ling CHEN School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China Received 21 June 2018; accepted 24 December 2018 Abstract: The

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Metals Free Full-Text Separation of Rhenium from Lead ...

Lead-rich molybdenite is a typical rhenium-bearing molybdenum resource in China, which has not been efficiently utilized due to its high contents of lead and gangue minerals. In this study, hydrochloric acid was used for preliminarily removing lead and calcite from a lead-rich molybdenite concentrate. Oxidative roasting-ammonia leaching was then carried out for separation of rhenium and ...

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TECHNICAL REVIEW AND EVALUATION - Pima County

2016-2-9  Rhenium oxide is recovered from the off gas of the molybdenum roasting process described above. Rhenium is condensed, collected, concentrated, and pumped to an ion exchange process for refining and shipment. D. Natural Gas Heaters and Boilers FMSI operates numerous process boilers and heaters that range from 1.2 to 25 million British thermal

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AIR QUALITY PERMIT - Pima County

2021-4-5  mineral values by bulk flotation followed by differential flotation, leaching and roasting of molybdenum disulfide, rhenium recovery, molybdenum disulfide and molybdenum trioxide packaging, and leaching of oxide ore with solution extraction/electrowinning processes. FMSI also operates a magnetic steel recovery plant, a decant solids

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Acidic Leaching with Chlorate as Oxidising Agent to ...

In the roasting process, over 91.3% of molybdenum and 90.1% of vanadium could be extracted when a charge containing a sodium carbonate to spent catalyst ratio of 0.15 was roasted at 750 °C for 45 ...

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(PDF) Pressure Oxidation of Molybdenum Concentrates

2013-4-23  During POX, the oxidation of molybdenum (Mo) is above 98%. More than 95% of the rhenium (Re) and 15% to 20% of the Mo are leached into solution. The sulfur in the concentrate is converted to H2SO4 ...

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Mineral Processing Engineering — Page 27 of 250

2021-10-19  Flotation Testing; Hydrometallurgy Tests ... technology is based principally on pyrometallurgical processing of sulfide concentrates in which high-temperature air-roasting and air-smelting generates large quantities of sulfur dioxide. ... Adsorption

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Dave Wernke - South Dakota School of Mines and

Managed a staff of 125 maintenance and operations employees in a diverse plant that included by-product molybdenum flotation, molybdenum leaching and roasting,

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MOLYBDENUM, FERROMOLYBDENUM, AND

2016-3-27  Molybdenum metal and ammonium molybdate are made by roasting concentrated molybdenite ore, as shown in Exhibit 2. The concentration operations, which are not shown, include crushing, grinding, and flotation of either primary or copper ores. Molybdenite is recovered from either primary molybdenite or copper sulfide ore by

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Metallurgist Mineral Processing Engineer

2021-11-15  Metallurgists Mineral Processing Engineers. For its extensive practical experience, 911 Metallurgist has a clear understanding of what successful mineral processing engineering is and how to go about achieving it. Your goal is the

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Rhenium in the Aitik Cu-Au-Ag-(Mo) deposit

2016-10-4  Rhenium, which is a unique element discovered back in 1925, ... concentrate after the copper flotation process (Fatai 2008). 2 Figure 1 Location map of Aitik, Liikavaara and Salmijärvi deposits. ... from the roasting of the molybdenite in porphry copper deposits (USGS 2008). Therefore, the

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Rhenium: Properties, Production, and Applications -

Rhenium recovery from flue gases in molybdenite roasting From porphyry copper ores, 0.3 – 1.6% copper and 0.01 – 0.05% molybdenum are ground and concentrated by flotation. Molybdenite is then roasted at 500 – 700°C to produce technical-grade molybdenum trioxide, MoO 3 .

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Metals Free Full-Text Separation of Rhenium from Lead ...

Lead-rich molybdenite is a typical rhenium-bearing molybdenum resource in China, which has not been efficiently utilized due to its high contents of lead and gangue minerals. In this study, hydrochloric acid was used for preliminarily removing lead and calcite from a lead-rich molybdenite concentrate. Oxidative roasting-ammonia leaching was then carried out for separation of rhenium and ...

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MOLYBDENUM, FERROMOLYBDENUM, AND

2016-3-27  Molybdenum metal and ammonium molybdate are made by roasting concentrated molybdenite ore, as shown in Exhibit 2. The concentration operations, which are not shown, include crushing, grinding, and flotation of either primary or copper ores. Molybdenite is recovered from either primary molybdenite or copper sulfide ore by

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LEADING THE WORLD IN MOLY - Climax Molybdenum

2019-1-28  roasting stowmarket, united kingdom ferromolybdenum sales office henderson, colorado primary mine ... mined ore crushing grinding flotation molybdenite concentrate mos 2 molybdenum disulfide mos 2 technical grade oxide moo 3 ... rhenium pellets information and customer service products loca tio ns and contacts.

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TECHNICAL REVIEW AND EVALUATION - Pima County

2016-2-9  Rhenium oxide is recovered from the off gas of the molybdenum roasting process described above. Rhenium is condensed, collected, concentrated, and pumped to an ion exchange process for refining and shipment. D. Natural Gas Heaters and Boilers FMSI operates numerous process boilers and heaters that range from 1.2 to 25 million British thermal

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The Kinetics of Oxidation of Molybdenite Concentrate by ...

2007-7-10  M olybdenite (MoS 2) is the major mineral for molybdenum.In the conventional pyrometallurgical process, oxidation roasting is applied to produce MoO 3, one of the commercial products containing Mo.However, there are several serious problems in processing molybdenite by this method: Valuable elements in the concentrate such as rhenium and selenium cannot be recovered

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AIR QUALITY PERMIT - Pima County

2021-4-5  mineral values by bulk flotation followed by differential flotation, leaching and roasting of molybdenum disulfide, rhenium recovery, molybdenum disulfide and molybdenum trioxide packaging, and leaching of oxide ore with solution extraction/electrowinning processes. FMSI also operates a magnetic steel recovery plant, a decant solids

More

Mineral Processing Engineering — Page 27 of 250

2021-10-19  Flotation Testing; Hydrometallurgy Tests ... technology is based principally on pyrometallurgical processing of sulfide concentrates in which high-temperature air-roasting and air-smelting generates large quantities of sulfur dioxide. ... Adsorption

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中国有色金属学报(英文版)2019年第29卷第4期-《中国有 ...

2019-4-4  Roasting oxidation behaviors of ReS 2 and MoS 2 in powdery rhenium-bearing, low-grade molybdenum concentrate Xiao-hui FAN, Qiong DENG, Min GAN, Xu-ling CHEN 840 Improving vanadium extraction from stone coal via combination of blank roasting and 849

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Distribution of the complex sulfide raw stuff components ...

The roasting thermodynamics of sulfides of molybdenum, rhenium and other components of complex concentrates in the presence of sodium carbonate and oxygen is calculated. In the presence of sodium carbonate, sulfides and oxides of these metals can form sodium molybdate, sodium perrhenate, sodium arsenate and sodium antimoniate. Aqueous solubility of sodium molybdate and sodium perrhenate ...

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The method of roasting of molybdenum concentrate and

Known roasting molybdenum concentrates in the multiple-hearth furnace, which achieved a high degree of burnout sulfur [1]. The disadvantage of this method is the partial sublimation of organic matter from the upper hearth, and also the low degree of sublimation of rhenium in the gas phase.

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