The influence of temperature on rare earth flotation with ...

2018-1-1  The influence of temperature on the complex process of Bayan Obo rare earth (RE) ore flotation with a collector of naphthyl hydroxamic acid (LF8#) was

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Mechanism of phthalic acid collector in flotation ...

2020-11-7  Baoshan Mining is able to acquire fluorite concentrate at a grade of 86.02% through the process of “preferential RE flotation - mixed foam flotation of fluorine

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Extraction of Niobium from the Bayan Obo Tailings by ...

In this paper, the method of “floatation—microwave magnetic roasting—low intensity magnetic separation” which aims to utilize the iron and Nb mineral in the Bayan

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The Bayan Obo (China) giant REE accumulation

The Bayan Obo deposit is the largest rare earth element (REE) accumulation in the world, and also an important iron and niobium resource in China (Xie et al.

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Recovery Behavior of Rare Earth from Bayan Obo Complex ...

2012-11-8  The technological sheet of rare-earth separation and recovery from Bayan Obo complex iron ore is shown in Figure 1. The isothermal reduction experiments were carried

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Recovery Behavior of Rare Earth from Bayan Obo Complex ...

A novel process is presented for recovering rare earth from Bayan Obo complex iron ore. The iron ore was reduced and melting separated to produce iron nugget and

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Pilot Beneficiation about Deoxidized Samples of Bayan

The composition of Deoxidized Samples of Bayan Obo Oxidized Iron Ore is complex with high content of residual reducing C, Fe phase in the RDP is ferrous metal what

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A novel approach for recovery of rare earths and niobium ...

It is difficult to economically recover rare earths (RE) and niobium (Nb) from Bayan Obo tailings by the existing metallurgical processes. In this study, a novel

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FLOWSHEET DEVELOPMENT FOR THE EXTRACTION OF

2017-9-7  The Bayan Obo ore is milled to 90–95% passing 74 m, and then processed through low- and high-intensity magnetic separation, and flotation of iron minerals, leaving

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Novel Harmless Utilization of Bayan Obo Tailings ...

2020-7-8  In this work, the carbothermal reduction and hydrochloric acid leaching were utilized for separation and recovery of iron and rare earth from the Bayan Obo

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Extraction of Niobium from the Bayan Obo Tailings by ...

In this paper, the method of “floatation—microwave magnetic roasting—low intensity magnetic separation” which aims to utilize the iron and Nb mineral in the Bayan Obo tailings was investigated. The results show that the method of “floatation—microwave magnetic roasting—magnetic separation” is effective and simple, and the recovery of iron and Nb in the whole process is up to 80 ...

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Mechanism of recovery processes for rare earth and iron ...

2020-9-21  Mechanism of recovery processes for rare earth and iron from Bayan Obo International Journal of Chemical Reactor Engineering ( IF 1.510) Pub Date : 2020-09-21, DOI: 10.1515/ijcre-2020-0077 Wenliang Guo, Daqiang Cang, Lingling Zhang, Junxiang Guo

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Pilot Beneficiation about Deoxidized Samples of Bayan

The composition of Deoxidized Samples of Bayan Obo Oxidized Iron Ore is complex with high content of residual reducing C, Fe phase in the RDP is ferrous metal what is hard and malleable resulting in pessimistic grindability. Gravity-magnetic separation process flow is adopted with C pre-rejecting, stage grinding (-0.074mm -57.18%, -0.074mm -85.66%) and coarse-fine fraction separate treatment ...

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FLOWSHEET DEVELOPMENT FOR THE EXTRACTION OF

2017-9-7  The Bayan Obo ore is milled to 90–95% passing 74 m, and then processed through low- and high-intensity magnetic separation, and flotation of iron minerals, leaving cleaner tailings concentrating REE minerals. However, the REE are concentrated using flotation of milled ores for the Mount Weld process (Li Yang, 2014).

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PART I. THE BAYAN OBO ORE DEPOSIT - USGS

GEOLOGIC AND TECTONIC SETTING. Bayan Obo is a stratabound ore deposit hosted by Proterozoic marble of the Bayan Obo Group. The regional distributions of the Proterozoic Bayan Obo Group, the Archean metamorphic rocks of the Wutai Group, which unconformably underlies the Bayan Obo Group, and granitic rocks of Archean, Caledonian (early to late Paleozoic), and Hercynian (Permian) ages in

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Recovery of Rare Earths, Niobium, and Thorium from the ...

The recovery of rare earths, niobium, and thorium from Bayan Obo's tailings has been investigated because the Bayan Obo ore is rich in rare earths and rich in niobium and thorium, but it is mined mainly as an iron ore and will be used up soon. By carbochlorination between 823 K (550 °C) and 873 K (600 °C) for 2 hours, 76 to 93 pct of rare earths were recovered from the tailings, which were ...

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Bayan Obo Rare Earth Mine, Inner Mongolia, China

The Bayan Obo mine located in the Inner Mongolia region of China is the world’s biggest rare earth element (REE) mine both by recoverable reserves and production. It accounts for more than 40% of the total known REE reserves in the world and nearly half of the global rare earth production. Owned and operated by Chinese state-owned Baogang ...

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Frontiers Life-Cycle Assessment of the Production of ...

The Bayan Obo mine contains bastnasite and monazite with approximately 4.1% REOs (Peiró and Méndez, 2013; Yang et al., 2013). In the Bayan Obo route, the REEs are by-products of iron ore extraction, and per 350 kg of iron mined 60 kg of REOs and

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Overview-SMSE, USST

2021-8-15   A method of flotation rare earth from the tailings of Bayan Obo mine, China Patent, ZL201110224271.1. A method for sorting scandium enrichment from Bayan Obo tailings, China Patent, ZL201210399795.9. A method to extract niobium from Bayan Obo tailings, China Patent, ZL201310300545.X.

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郑强-化学工程学院

2021-7-5  [3] Investigations on mineralogical characteristics of rare earth minerals in Bayan Obo tailings during roasting process[J]. Journal of Rare Earths, 2017, 35(3): 300-308. [4] Iron recovery and rare earths enrichment from Bayan Obo tailings using Coal-Ca(OH)2-NaOH roasting followed by

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CHINA’S RARE EARTH ORE DEPOSITS AND BENEFICIATION

2014-9-29  and the activator sodium fluoride in the flotation process was not needed. After the 1990s, a hydroxamic acid with dual activating group, the No.8 flotation oil, improved from H205, has been used in the Bayan Obo rare earth plant as a collector.

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The Production of Critical Materials as By Products

2019-8-24  The primary product of Bayan Obo is iron ore, but Bayan Obo also produces much of the world’s REEs as a by product. In 2009, Bayan Obo produced 55,000 metric tons of rare earth oxides (REO) [11]. Bayan Obo produced more REEs than any other mine in the world. The primary processing of the REEs at Bayan Obo is by flotation and gravity separation.

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PART I. THE BAYAN OBO ORE DEPOSIT - USGS

GEOLOGIC AND TECTONIC SETTING. Bayan Obo is a stratabound ore deposit hosted by Proterozoic marble of the Bayan Obo Group. The regional distributions of the Proterozoic Bayan Obo Group, the Archean metamorphic rocks of the Wutai Group, which unconformably underlies the Bayan Obo Group, and granitic rocks of Archean, Caledonian (early to late Paleozoic), and Hercynian (Permian) ages in

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Rare Earth Flotation Fundamentals: A Review

2017-12-14  Bastnasite Flotation As the primary rare earth mineral at two of the world’s largest rare earth mines (Mountain Pass, CA and Bayan Obo, China) bastnasite has been the main focus of rare earth flotation research for some time.

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ProduProduction Process and ction Process and ction ...

2018-4-17  process. Principally, flotation reagents can be classified into: collectors, frothers, regulators, and depressants. The most important reagent is collector. Two collectors, fatty acids and hydroxamates, are most widely applied in the rare earth flotation process. The largest deposit is the Bayan Obo iron-niobium-REEs deposit.

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Overview-SMSE, USST

2021-8-15   A method of flotation rare earth from the tailings of Bayan Obo mine, China Patent, ZL201110224271.1. A method for sorting scandium enrichment from Bayan Obo tailings, China Patent, ZL201210399795.9. A method to extract niobium from Bayan Obo tailings, China Patent, ZL201310300545.X.

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郑强-化学工程学院

2021-7-5  [3] Investigations on mineralogical characteristics of rare earth minerals in Bayan Obo tailings during roasting process[J]. Journal of Rare Earths, 2017, 35(3): 300-308. [4] Iron recovery and rare earths enrichment from Bayan Obo tailings using Coal-Ca(OH)2-NaOH roasting followed by

Get Price

Pilot Beneficiation about Deoxidized Samples of Bayan

The composition of Deoxidized Samples of Bayan Obo Oxidized Iron Ore is complex with high content of residual reducing C, Fe phase in the RDP is ferrous metal what is hard and malleable resulting in pessimistic grindability. Gravity-magnetic separation process flow is adopted with C pre-rejecting, stage grinding (-0.074mm -57.18%, -0.074mm -85.66%) and coarse-fine fraction separate treatment ...

Get Price

Recovery Behavior of Rare Earth from Bayan Obo Complex ...

A novel process is presented for recovering rare earth from Bayan Obo complex iron ore. The iron ore was reduced and melting separated to produce iron nugget and rare-earth-rich slag. In order to investigate the influence of cooling rate on mineral components, especially the enrichment behavior of RE-containing mineral, the slag was remelted at 1673 K (1400 °C) and the liquid slags were ...

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Recovery of Rare Earths, Niobium, and Thorium from the ...

The recovery of rare earths, niobium, and thorium from Bayan Obo's tailings has been investigated because the Bayan Obo ore is rich in rare earths and rich in niobium and thorium, but it is mined mainly as an iron ore and will be used up soon. By carbochlorination between 823 K (550 °C) and 873 K (600 °C) for 2 hours, 76 to 93 pct of rare earths were recovered from the tailings, which were ...

Get Price