Global demand and consumption of rare earth elements and compounds have led to increasing research to further our understanding of their beneficiation and recovery. Monazite is the second-most important rare earth-bearing mineral that can be exploited. In this study, the surface chemistry of monazite in terms of zeta potential, …
Bastnäsite is an important mineral resource in the production of rare earth materials and is usually beneficiated by flotation. The flotation of bastnäsite is problematic due to the competitive ...
Monazite is the second-most important rare earth-bearing mineral that can be exploited. In this study, the surface chemistry of monazite in terms of zeta potential, …
The flotation of rare earth (RE) minerals (i.e. xenotime, monazite-(Nd), RE carbonate mineral) from an ore consisting mainly of silicate minerals (i.e. primary silicate minerals and nontronite ...
The special electron structure of rare earth elements (REEs) leads to their unique fluorescent, magnetic and chemical properties; therefore, REEs play an irreplaceable role in many fields such as metallurgy, petrochemical industry, fine ceramics, luminescent materials and medical industry [].With technological development, REEs are …
The flotation behavior of bastnaesite, a major mineral source of rare earth elements, is strongly affected by the dissolved species of gangue minerals that change the solution chemistry and ...
The present study examined the impact of specific anions such as Cl −, SO 42−, and HCO 3− on the flotation performance of rare earth (RE) ore. This study …
The flotation of rare earth (RE) minerals (i.e. xenotime, monazite-(Nd), RE carbonate mineral) from an ore consisting mainly of silicate minerals (i.e. primary silicate minerals and nontronite clay) and hematite was investigated using tall oil fatty acids (Aero 704, Sylfat FA2) as collector.
The flotation process is considered one of the most important techniques to separate rare earth minerals from associate minerals and is commonly applied to the beneficiation of rare earth ores.
Bastnaesite, [RE-CO 3 -OH/F] (RE = rare earth) is one of the major sources of rare earth elements found in commercial deposits at Mountain Pass, California, Bayan Obo, China, and elsewhere. Synthetic forms of bastnaesite have been explored for applications including optical devices and phosphors. Determination of thermodynamic …
2. **Flotation Reagents**: Various reagents are used in flotation to control the surface properties of minerals. These include collectors, frothers, and modifiers. Collectors are chemicals that selectively bind to target minerals, making them hydrophobic. Frothers create stable bubbles, while modifiers can control pH and other factors.
The flotation of rare earth minerals, which is of current interest in the mineral processing field, is challenging owing to the dissolution of gangue minerals. In this study, dissolved fluorite and barite species were found to significantly affect the flotation behavior of bastnaesite.
Previous work focused on studying the surface chemistry of rare earth minerals in connection with the flotation process using ζ-potential measurements and analysis of reagents' adsorption on surfaces. 31−33 As concluded from the previous examples, there is a lack of reliable assessment of the surface energy of minerals, …
Literature on the flotation of rare earth oxide minerals is a relatively limited. This is especially true with regard to fundamental flotation research, although, as the demand for rare earths continues to grow, the ... on the separation of these minerals based on differences in their surface properties. Unfortunately, this is where the ...
Froth flotation relies on the differences in the surface properties of the primary and gangue minerals. While the valuable minerals are usually oxides or salt type minerals, the gangue minerals ...
Bastnaesite, a rare-earth fluocarbonate, was separated from associated calcite and barite gangue minerals in the Mountain Pass, CA rare-earth ore beneficiation plant by froth flotation using fatty acids (tall oil) collector, lignin sulfonate depressant and soda ash modifier after high-temperature (steam) conditioning with reagents. Starting …
Various REMs were examined and include the rare earth oxides (REOs), carbonates (RECs), and phosphates (REPs) of a suite of Rare Earth Elements (REEs). …
The flotation behavior of bastnaesite, a major mineral source of rare earth elements, is strongly affected by the dissolved species of gangue minerals that change the solution chemistry and ...
REE mineral in pilot plant is currently under way. Key words: Rare earth minerals, Flotation, Surface chemistry, TOF-SIMS, SEM-EDX INTRODUCTION Starting in 1976, the Thor Lake Property (TLP) has been explored by a number of companies for Rare Earth Elements (REEs), Niobium and Tantalum. In the TLP deposit heavy rare earth …
Request PDF | On Mar 1, 2019, Ilgin Kursun and others published Determination of surface chemistry and flotation properties of rare earth mineral allanite | Find, read and cite all the research ...
The United States contains a variety of domestic rare earth element mineral sources containing bastnasite, monazite, and xenotime. This research was performed to investigate
Bastnaesite, a rare earth fluorocarbonate, is one of the most abundant minerals that contain rare earth elements comprised of cerium, lanthanum, praseodymium, and other light rare earth elements. The focus of this research was to find a novel collector that increases desired concentrate grade and recovery while rejecting gangue minerals …
First, the surface chemistry features of alkaline earth semisoluble salt minerals are reviewed, and then the surface chemistry features of rare-earth …
Determination of surface chemistry and flotation properties of rare earth mineral allanite
Apatite subspecies depend on their halogen and hydroxyl content; chlorapatite, hydroxylapatite and fluorapatite, with additional substitution of other elements within the lattice such as rare earth elements (REE), sodium, strontium and manganese also possible. Rare earth elements are vital to green …
Rare-earth mineral (REM) flotation is reviewed. ... Carbonate ions will affect both the solution pH and the surface properties of bastnӓsite and gangue minerals such as calcite and barite (carbonate anions are potential-determining ions for these minerals) [122]. Pradip and Fuerstenau [122] suggested that through the addition of sodium ...
Research has been performed to investigate the fundamental surface chemistry involved in the froth flotation of these …
Research has been performed to investigate the fundamental surface chemistry involved in the froth flotation of these minerals, and apply the knowledge gained to substantiate …
The flotation process of native rare earth minerals such as bastnasite, monazite, mixed minerals of bastnasite and monazite, using the new effective collector Dh was studied, respectively, and the ...
The flotation of rare earth minerals is broadly classified into two categories, such as carbonate mineral (bastnaesite) flotation and phosphate mineral (monazite and xenotime) flotation. The majority of monazite and xenotime minerals are found in placer deposits, and around 60% of them are liberated at finer than 10 μm …