rare earth patents

Apr 07, 2021· The country, which already supplies more than 80 percent of the world's rare earth metals, is rapidly amassing patents related to the elements, says James Kennedy, president of St Louis, Missouri, based ThREE Consulting, who last year initiated a global patent search to back up his lobbying effort to the US government.

rare earth ore acid compounds Prior art date Application number PCT/US2013/066663 Other languages French (fr) Inventor Joseph Brewer Neil Lawrence Original Assignee Rare Earth Salts Separation And Refining, Llc Priority date (The priority date …

A process is described for the recovery of rare earth elements from a sulphurous acid solution containing them. The rare earth elements can be successfully separated and recovered by solvent extraction from the sulphurous acid solution, being an organo-phosphorus compound as extraction agent. Di-2-ethylhexyl phosphoric acid or 2-ethylhexyl phosphonic acid mono-ethylhexyl ester is preferred as ...

Feb 02, 2021· American Resources, a next-generation and socially responsible supplier of raw materials to the new infrastructure marketplace, has licensed ligand assisted displacement ("LAD") chromatography patents and know-how to further expand its capability in environmentally friendly separation and purification of rare-earth elements. These exclusive ...

A method for extracting and separating rare earth elements comprising providing a rare earth-containing ore or tailings, grinding the rare earth-containing ore to form powdered ore; leaching powered ore with at least one mineral acid, forming a leach solution comprising at least one metal ion, rare earth elements and a solid material, separating solid material from the leach solution to form ...

A process for producing at least one rare earth chloride from an ore containing the at least one rare earth comprises: contacting the ore containing the at least one rare earth with reactants comprising a carbonaceous reducing agent, chlorine, and a boron-containing acid in a chlorination reactor to produce a gaseous product and a non-volatile chloride mixture comprising the at least one ...

Oct 13, 2020· //Rare Earths Prices. Looking at the rare earth oxide prices long term, it is pretty obvious for which products there is continuously healthy demand, and which products are a problem. As mentioned before, the rare earth metal prices increased on improved margins, because of closures of unlicensed or under-licensed or polluting smelters in China.

A process for the extraction of rare earth elements, including yttrium, from a rare earth element-bearing ore or concentrate, comprising the steps of leaching the rare earth element-bearing ore or concentrate with a lixiviant of hydrochloric acid and magnesium chloride at atmospheric pressure at a temperature of from 90°C to the boiling point of the solution and at an Eh of at least 200 m V .

May 30, 1995· An alternative method is proposed in Japanese Patent Kokai No. 4-130014 for the preparation of rare earth phosphate particles as a base material of phosphors having a particle diameter of 1 to10 .mu.m, in which an aqueous slurry of fine particles …

Summary of Patent Data: China issues more rare earth patent every year than the rest of the world combined. By sometime in 2021 China will have accumulated more patents that the rest of the world combined. China has accumulated a 23,000 patent lead over the U.S. in just 14 years. The trend line does not bode well for the U.S. or the RoW.

A method for the precipitation of rare earth sulphate, the method including subjecting a crude rare earth sulphate solution to precipitation in the presence of a water soluble, volatile, organic compound to produce a rare earth sulphate precipitate and an acidic supernatant. The organic compound is preferably selected from the group consisting of methanol, ethanol, iso-propanol, tert-butanol ...

Mar 21, 2019· China's first international rare earth patent filing was in 1983, and just 14 years later, China surpassed the United States and every other nation in total patents filed as shown in the chart. As of August 2018, China has accumulated 23,000 more rare earth patent filings than the United States.

Rare Earth Salts has generated patent pending technology that can revitalize the rare earth industry in the US and could potentially relocate hundreds of high technology companies back to the US. Furthermore, the patent pending process removes many of the environmentally damaging processes of current rare earth oxide refining, while greatly reducing the overall cost of refining the individual ...

Jul 20, 2019· As of October, China had filed for 25,911 patents on all the rare earth elements, far ahead of 9,810 by the US, 13,920 by Japan and 7,280 by the …

Oct 08, 2012· The present disclosure discloses rare earth metal halide scintillators compositions with reduced hygroscopicity. Compositions in specific implementations include three group of elements: Lanthanides, (La, Ce, Lu, Gd or V), elements in group 17 of the periodic table of elements (CI, Br and I) and elements of group 13 (B, AI, Ga, In, TI), and any combination of these elements.

US5045289A US07/416,885 US41688589A US5045289A US 5045289 A US5045289 A US 5045289A US 41688589 A US41688589 A US 41688589A US 5045289 A US5045289 A US 5045289A Authority US United States Prior art keywords rare earth carbonate sub carbon dioxide hydroxide Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.

Nov 25, 1997· A method of making a rare earth compound, such as a earth-transition metal permanent magnet compound, without the need for producing rare earth metal as a process step, comprises carbothermically reacting a rare earth oxide to form a rare earth carbide and heating the rare earth carbide, a compound-forming reactant (e.g. a transition metal and ...

Mar 12, 2014· An object of the present invention is to enhance a coercive force of magnetic particles by promoting formation of a continuous R-rich grain boundary phase in a crystal grain boundary of a magnetic phase of the particles, and to thereby obtain R-T-B-based rare earth magnet particles further having a high residual magnetic flux density. The present invention relates to production of R-T-B …

A rare earth permanent magnet includes a main phase composed of a main phase particle and a grain boundary present among a plurality of the main phase particles. The grain boundary includes a region whose electric resistance is higher than that of the main phase.

Jun 12, 2020· The patents cover an approach that reduces the use of reagents while producing high recoveries of both REE and niobium, adds the firm. "With rare earths supply chains under the microscope again, efforts are underway by the U.S. and Canadian governments to bring critical materials production back to North America, which would favor Geomega ...

The present disclosure provides compositions, methods, and devices for sensing, detecting, and/or selectively capturing phosphate from water. An exemplary method includes: contacting a ligand or a rare earth metal complex of a ligand as described herein with an aqueous phosphate-containing medium at a pH of 5 to 12 under conditions sufficient to bind phosphate (e.g., reversibly bind phosphate).

Nov 30, 2017· A rare-earth sintered magnet contains main phase crystal grains having an Nd5Fe17-type crystal structure, includes R and T (where R represents one or more rare-earth elements that essentially include Sm and T represents Fe or one or more transition metal elements that essentially include Fe and Co), and wherein the compositional ratio of R is 20-40 at % and the remaining portion …

A rapidly solidified alloy is produced by quenching and solidifying a melt of an alloy having a general formula represented by (Fe 1-m T m ) 100-x-y-z Q x R y M z where T denotes at least one kind of element selected from the group consisting of Co and Ni, Q denotes at least one kind of element selected from the group consisting of B and C, R denotes at least one kind of rare earth element ...

Oct 08, 2020· Chinese control over patents in the USA could be seen as a potential risk factor to the USA's development of a domestic rare earths supply chain. Roskill will publish its Rare Earths: Outlook to 2029, 20 th Edition report in December 2020, which provides detailed analysis of supply, demand, trade, prices and forecasts, along with profiles of ...

Rare-earth fluorides were prepared by a solid-state reaction between the rare-earth oxides and ammonium bifluoride. This reaction was characterized by high reaction efficiencies and almost conversion of the oxides to anhydrous, oxygen-free fluorides. Both the chloride and fluoride saits were reduced to metal by metallic reduction under an ...

Sep 06, 2016· DOE Patents Patent: Rare earth-doped materials with enhanced thermoelectric figure of merit. Rare earth-doped materials with enhanced thermoelectric figure of merit. Full Record; References (2) Other Related Research; Abstract. A thermoelectric material and a thermoelectric converter using this material. The thermoelectric material has a first ...

Aug 30, 2016· Abstract. A method for the separation of the rare-earth fission product poisons comprising providing a spent nuclear fuel. The spent nuclear fuel comprises UO.sub.2 and rare-earth oxides, preferably Sm, Gd, Nd, Eu oxides, with other elements depending on the fuel composition. Preferably, the provided nuclear fuel is a powder, preferably formed ...

May 06, 2020· The production of rare earth metals is a global $4 billion annual market that continues to grow as new electronics, computerized engines for aircraft, warships, electric automobiles, magnets and other critical products are developed that need rare earth metals to perform. The value of the products that require rare earth metals to function is valued at more than $4 trillion per year.

The rare earth market is analyzed based on material type and application, and it is expressed as rare earth consumption (in metric tons [t]) and revenues (in $ millions). A detailed U.S. patent analysis provides further insight regarding market and technological developments.

Global Trends In Rare Earth Patents And Other Macro Trends James Kennedy ThREEConsulting.com St. Louis, Missouri USA October 22-23, 2018 in Tokyo, Japan . Rare Earths in Material Science & Technology The 16 naturally occurring rare earth elements play an ...