US6677262B2 - Rare earth oxide, basic rare earth carbonate ...

A rare earth oxide in the form of substantially spherical particles having a Fisher diameter Df of 0.5 μm

A study of rare earth ion-adsorption clays: The speciation ...

Synthesized rare earth ion-adsorption clays (La, Ce, Nd, Dy and Y, ~ 400 ppm each) were prepared from kaolinite at various basic pH in open-air conditions. X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and inductively coupled plasma mass spectrometry (ICP-MS) were used to characterize the effect of pH on the adsorption mechanism of rare earth elements (REEs) on kaolinite.

Rare Earth abundances in some basic rocks - Frey - 1968 ...

Rare-earth (RE) abundances are reported for several basalts, diabases, and gabbros. Compared with the RE distribution in chondritic meteorites, continental basic rocks are characterized by an enrichment of the light lanthanides. Intrusive basic rocks have lower RE contents and less fractionated RE distributions than continental basalts.

Rare Earth Metal Pricing Skyrockets, May Result in Higher ...

Nikkei reports that we are at an inflection point for the semiconductor industry - mostly due to its most basic prime matter, rare earth metals (such as copper, lithium, or …

Rare Earth Elements (REE): Why are they strategically ...

Rare Earth Elements (REE) are metals having many similar properties. The global demand for rare earth elements has increased significantly in line with their expansion into high-end technology, environment, and economic areas. In this post, we see the importance of Rare Earth Elements and their strategic significance.

Rare Earth Extraction - an overview | ScienceDirect Topics

The rare earth so loaded in the resin is separated using a complexing agent which has different affinities for the various rare earth elements. The process is very slow and expensive, but it can produce highly pure rare earth elements in small quantities. Few heavy rare …

Magnet Basics - Strong Neodymium Magnets, Rare Earth Magnets

Magnet Basics. Magnets can either attract or repel each other. A permanent magnet is an object that produces a magnetic field around itself. It is this field that enables them to stick to each other and to some types of metal. Specifically, they stick to ferromagnetic materials like …

Basic of rare earth magnet as well as its use in day-to ...

The rare earth magnets are made from the alloys of rare earth elements. These rare earth elements are ferromagnetic in nature, which implies that they might take to the magnetic properties. The rare earth magnets are discovered mostly in two kinds: Samarium-cobalt and also Neodymium.

Fun Facts About Rare Earth Elements

Rare earth elements (REEs) are natural elements with an atomic number from 57 to 71. Today, many hybrid cars on the road carry with them about 10 pounds of lanthanum. Nickel-lanthanum hydride batteries are about twice as efficient as the standard lead-acid car battery. Bastnasite (crystal)

Chemical Elements.com - Actinium (Ac)

Basic Information Name: Actinium Symbol: Ac Atomic Number: 89 Atomic Mass: (227.0) amu Melting Point: 1050.0 °C (1323.15 K, 1922.0 °F) Boiling Point: 3200.0 °C (3473.15 K, 5792.0 °F) Number of Protons/Electrons: 89 Number of Neutrons: 138 Classification: Rare Earth Crystal Structure: Cubic Density @ 293 K: 10.07 g/cm 3 Color: Silvery Atomic ...

Rare Earth Recycling | Department of Energy

January 1, 2017. Basic Energy Sciences. Rare Earth Recycling. Images courtesy of J.A. Bogart, et al ., Angew. Chem. Int. Ed. 54, 8222-8225 (2015) A cost-effective method for separating rare earth elements, such as the neodymium and dysprosium commonly found in permanent magnets, could lead to increased recycling of end-of-life consumer products.

Rare Earth/Strategic Metals ETF List - ETFdb.com

Rare Earth/Strategic Metals and all other industries are ranked based on their aggregate 3-month fund flows for all U.S.-listed ETFs that are classified by ETF Database as being mostly exposed to those respective industries. 3-month fund flows is a metric that can be used to gauge the perceived popularity amongst investors of Rare Earth ...

Rare earth element mineral deposits in the United States

Because of their unique special chemical properties, many of the metals in the group of rare earth elements (REEs) have essential applications in 21st century technologies. Examples of products that use REEs are cell phones, computers, fluorescent and light-emitting-diode lights, flat-screen television and computer monitors, and in high-strength magnets used by clean energy technologies …

Extracting the truth about rare earths | INTHEBLACK

Actually, rare earths are not particularly rare. According to mining.com, the least abundant rare earth elements – thulium and lutetium – are still almost 200 times more common than gold. Plus, they are often required only in small amounts, leading to them being referred to by some as the vitamins of the minerals industry.

Rare Earth Elements—Critical Resources for High Technology ...

Rare Earth Element Abundances "Rare" earth elements is a historical misnomer; persistence of the term reflects unfamiliarity rather than true rarity. The more abundant REE are each similar in crustal concentration to commonplace industrial metals such as chromium, nickel, copper, zinc, molybdenum, tin, tungsten, or lead (fig. 4).

REMX - VanEck Rare Earth/Strategic Metals ETF | Overview ...

Fund Description. VanEck Rare Earth/Strategic Metals ETF (REMX ®) seeks to replicate as closely as possible, before fees and expenses, the price and yield performance of the MVIS ® Global Rare Earth/Strategic Metals Index (MVREMXTR), which is intended to track the overall performance of companies involved in producing, refining, and recycling of rare earth and strategic metals and minerals.

Basic properties of rare earth oxides - ResearchGate

Rare earth (lanthanide) metal oxides are known for their strong basic properties and reducible characteristics [17, 18]. Among them, CeO 2 is a reducible oxide widely used in numerous catalytic ...

Does China pose a threat to global rare earth supply chains?

The National Medium- and Long-Term Program for Science and Technology Development (2006-2020) lists rare earths among key materials that are needed to support basic industries. Deep Reliance on China China has demonstrated a willingness to leverage its influence in the global rare earth industry in pursuit of its political objectives.

rare-earth element | Uses, Properties, & Facts | Britannica

rare-earth element, any member of the group of chemical elements consisting of three elements in Group 3 (scandium [Sc], yttrium [Y], and lanthanum [La]) and the first extended row of elements below the main body of the periodic table (cerium [Ce] through lutetium [Lu]). The elements cerium through lutetium are called the lanthanides, but many scientists also, though incorrectly, call those ...

An overview of rare-earth recovery by ion-exchange ...

Continuous development of advanced technologies has created increasing demand for rare-earth elements (REE), with global emphasis on identifying new alternate sources to ensure adequate supply.Ore deposits containing physically adsorbed lanthanides are substantially lower grade than other REE deposit types; however, the low mining and processing costs make them …

Rare Earths Statistics and Information

The principal economic sources of rare earths are the minerals bastnasite, monazite, and loparite and the lateritic ion-adsorption clays. The rare earths are a relatively abundant group of 17 elements composed of scandium, yttrium, and the lanthanides. The elements range in crustal abundance from cerium, the 25th most abundant element of the 78 common elements in the Earth's

The structures of some rare earth basic nitrates [Ln6(μ6-O ...

The structures of some rare earth basic nitrates [Ln6(μ6-O)(μ3-OH)8(H2O)12(NO3)6](NO3)2. xH2O, Ln = Y, Gd, Yb, x(Y, Yb) = 4; x(Gd) = 5. A novel rare earth …

The Principal Rare Earth Elements Deposits of the United ...

The rare earth elements (REE) are fifteen elements with atomic numbers 57 through 71, from lanthanum to lutetium ("lanthanides"), plus yttrium (39), which is chemically similar to the lanthanide elements and thus typically included with the rare earth elements.

Basic properties of rare earth oxides - ScienceDirect

Basic properties of rare earth oxides (REOs) calcined at different temperatures were investigated. During the calcination process, the crystal structures of Lu, Yb, Tm, Er, Y, Ho, and Dy oxides transformed from monoclinic to cubic with increasing calcination temperature, while those of Sc, Ce, La, Pr, Nd, Sm, Eu, Gd, and Tb oxides showed no change at temperatures below 1100 °C.

What are rare earth elements, and why are they important ...

The Principal Rare Earth Elements Deposits of the United States—A Summary of Domestic Deposits and a Global Perspective (Report), U.S. Geological Survey Non-technical report providing an overview of the basic geology of rare earth elements including U.S. deposits, current sources and domestic reserves, and principal rare earth deposits of the ...

Production of rare earth oxides - SlideShare

Production of rare earth oxides 1. Production of rare earth oxidesAssessment of the environmental impacts in two Chinese minesDissertation for the Master of Science inEnvironmental Systems EngineeringAländji BOUORAKIMASupervisor: Julia STEGEMANNUniversity College LondonDepartment of Civil, Environmental & Geomatic EngineeringLondon, United Kingdom, …

Periodic Table Quiz Questions And Answers: Chemistry

C. Alkaline earths, alkali metals, rare earths, basic metals, transition elements. Click to see the correct answer. Answer: C. Alkaline earths, alkali metals, rare earths, basic metals, transition elements. 27. Where can we find the chemical element with the smallest atom in the periodic table? A. On the right and bottom area

China Is Dominating Rare Earth Metals. So Is the REMX ETF

Right now, China is the dominant player in rare earth metals. ETF investors can play this strength with the VanEck Vectors Rare Earth/Strategic Metals ETF …

Lanthanide - Wikipedia

[citation needed] The "earth" in the name "rare earths" arises from the minerals from which they were isolated, which were uncommon oxide-type minerals. However, these elements are neither rare in abundance nor "earths" (an obsolete term for water-insoluble strongly basic oxides of electropositive metals incapable of being smelted into metal ...