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recovery flotation process bayan obo

The influence of temperature on rare earth flotation with

Jan 01, 2018 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 investigated. Industrial test data shows that the grade and recovery of RE increase with the temperature.

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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 rare-earth-rich slag.

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Mechanism of phthalic acid collector in flotation

Nov 07, 2020 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 (one roughing and seven cleaning) superconductive magnetic separation”. 3,4 However, these technologies have disadvantages known as long process route, poor reagent selectivity and low processing capacity of

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Investigations on mineralogical characteristics of rare

Mar 01, 2017 Comprehensive recovery of iron and rare earths from Bayan Obo oxidized iron ore by the industrial process of low-intensity magnetic separation, high-intensity magnetic separation and flotation Metal Mine (in Chin.),10 ( 1988 ),p.

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Recovery of Rare Earths, Niobium, and Thorium from the

Carbochlorination is a promising method for the recovery of rare earths, thorium and niobium from the tailings of Bayan Obo ore (Yu et al., 2012). The powdered tailings are mixed and heated in a...

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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 hydrometallurgy process was...

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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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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.

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Study on recycling and leaching valuable elements from

A novel process for recovering iron, niobium and scandium from Bayan Obo tailings has been developed. In this paper, the treatment of Bayan Obo tailings by Ca(OH)2-coal roasting and sulfuric acid

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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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A Novel Harmless Utilization of Bayan Obo Tailings

A Novel Harmless Utilization of Bayan Obo Tailings: Separation and Recovery of Iron and Rare Earth which can be used as a raw material for the flotation of fluorite. A homogenization heat

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A novel approach for recovery of rare earths and niobium

A novel hydrometallurgy process was employed for separating and recovering REE from Bayan Obo tailings (Zhang et al., 2014). Based on technological advances in recovery techniques, mine waste are

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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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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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Study on recycling and leaching valuable elements from

A novel process for recovering iron, niobium and scandium from Bayan Obo tailings has been developed. In this paper, the treatment of Bayan Obo tailings by Ca(OH)2-coal roasting and sulfuric acid

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Novel Harmless Utilization of Bayan Obo Tailings

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 tailings. The effects of temperature, addition of calcium oxide, and reaction time on the metallization rate of iron during roasting were investigated. The results showed that the metallization rate of iron reached 99.67% and the loss rate

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The Production of Critical Materials as By Products

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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Study on Leaching Valuable Elements from Bayan Obo

After extracting rare earths minerals, iron minerals and fluorite from Bayan Obo ore, niobium and scandium which are riched in the mineral processing tailings coexist with the remaining rare earth. In order to recovery these valuable elements, the tailings was disposed with the method of activating roasting-acid leaching.

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The Production of Critical Materials as By Products

After selective flotation, the flotation concentrate is upgraded using gravity separation with shaking Tables, spiral concentrators, and conical separators [11,12]. Figure 5 shows the process flow sheet for the Bayan Obo mine. Figure 5:Process flow sheet for the Bayan Obo Iron mine in China [12].

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Boom in Mining Rare Earths Poses Mounting Toxic Risks

Jan 28, 2013 Bayan-Obo, China’s largest rare earths project, has been operating for more than four decades. According to the Germany-based Institute for Applied Ecology,the site now has an 11-square-kilometer waste pond — about three times the size of

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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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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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Formation of the world's largest REE deposit through

May 07, 2013 Bayan Obo, located at the northern margin of the North China Craton (), is the largest light rare earth element (LREE) deposit in the world (Supplementary Figure S1 and Table S1), the largest

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Bastnäsite Wikipedia

Bayan Obo is currently (2008) providing the majority of the world's lanthanides. Bayan Obo bastnäsite occurs in association with monazite (plus enough magnetite to sustain one of the largest steel mills in China), and unlike carbonatite bastnäsites, is relatively closer to monazite lanthanide compositions, with the exception of its generous 0

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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

More

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

More

Study on Leaching Valuable Elements from Bayan Obo

After extracting rare earths minerals, iron minerals and fluorite from Bayan Obo ore, niobium and scandium which are riched in the mineral processing tailings coexist with the remaining rare earth. In order to recovery these valuable elements, the tailings was disposed with the method of activating roasting-acid leaching.

More

The Production of Critical Materials as By Products

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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Minerals Free Full-Text Effect of Depressants and

The recovery is greater for bastnaesite than for monazite, a behaviour observed for all experiments. The faster flotation rate of bastnaesite over monazite was also observed for the Bayan Obo ore,and this behaviour was attributed to the better adsorption of the collector onto the bastnaesite surface than onto the monazite. In the present case

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Extraction and Recovery of Cerium from Rare Earth Ore by

Mar 10, 2018 Our group proposed a process for Bayan Obo mixed RE ore by utilizing the property of valence change of cerium. The diagram of this process is shown in Figure 1 . When Ce(III) was oxidized to Ce(IV), F(I) and P can be easily recovered from leaching liquor by solvent extraction in virtue of the complex properties of Ce(IV) with F(I) and P [ 18 ].

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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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Minerals Free Full-Text Thermodynamic Constraints on

The Bayan Obo REE-Nb-Fe deposit is a typical carbonatite-related deposit, which indicates the rare earth element (REE) resources originated from local carbonatite magma [1,2].However, there is still controversy about whether the abnormal REE enrichment was initiated during the intrusion of dolomitic carbonatite melt, or during hydrothermal metasomatism which overlapped a sedimentary carbonate

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Formation of the world's largest REE deposit through

May 07, 2013 Bayan Obo, located at the northern margin of the North China Craton (), is the largest light rare earth element (LREE) deposit in the world (Supplementary Figure S1 and Table S1), the largest

More

PowerPoint Presentation

In addition to REE from Bayan Obo's ore, magnetite, fluorite, hematite and niobium minerals are gained.75μ boyutu altına öğütülmektedir. The pH is adjusted with Na2CO3. For the suppression of other impurities Na2SiO3 and Na2SiF6. Hydroxamic acid is used as the collector. Calcite, fluorite and barite are depressed between pH 5-6.

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Extraction of Rare-Earth Elements from Iron-Rich Rare

Bayan Obo is the largest exploited iron-rich rare-earth deposit. beneficiated into a 65% REO concentrate with an overall rare-earth recovery of about 61% via a (HIMS) which produce a mixed concentrate of about 9.78–12% REO. The latter is upgraded by flotation using appropriate reagents. Reverse flotation of iron minerals, an important

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CHINA’S RARE EARTH ORE DEPOSITS AND BENEFICIATION

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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Rare-earth mining AccessScience from McGraw-Hill Education

The Bayan Obo deposit in China, the nature and origin of which is still debated, appears to be an overprinting of carbonatite-REE mineralization on parts of an iron deposit. Research is underway to improve the flotation process, perhaps with better reagents, to allow the economic treatment of lower-grade REE ores. Many of the REEs

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OECD-Intro-Thorium-Nuclear-Fuel-Cycle-2015

Then, gravitational, flotation, electromagne often, a combination of these techniques, than 90%. The exact sequence depends on horium recovery process 2. Digestion and Valuable Element ciation Extraction ation 2015 113 . At Bayan Obo, the presence of highly magn

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