rare earth metal recovery patent

Review on hydrometallurgical recovery of rare earth metals ...

Review on hydrometallurgical recovery of rare earth metals from various resources • Various leachants used to recover rare earths from primary and secondary resources • Solvent extraction studies using ionic, anionic, chelating, etc. extractants • Separation of rare earth metals from chloride, nitrate, phosphate, etc. solutions

Rare Earth Element Recovery Using Monoethanolamine

Current methods of rare earth element (REE) recovery from industrial solutions are environmentally untenable and have significant waste management challenges. Increasing global REE consumption necessitates the development of new, sustainable means of production. Herein, we report a means of recovering aqueous REEs using monoethanolamine and carbon dioxide as predicted using the Mixed …

Rare opportunity to recycle rare earths - Recycling Today

Rare opportunity to recycle rare earths Features ... used in other appli ions through resizing or reshaping or processed back to rare-earth metal. This recovery method also can be adapted to target other consumer goods containing rare-earth magnets, ... CMI created a table of more than 460 U.S. patents…

Recycling of rare earth metals from rare earth-transition ...

-8- 995� 83; Method of treating rare earth metal-bearing scrap, waste or other material (e.g. Nd--Fe--B or Dy--Tb--Fe scrap) to recover the rare earth metal comprising melting the rare earth metal-bearing material, melting a Group IIA metal extractant, such as Mg, Ca, or Ba, in which the rare earth is soluble in the molten state, and contacting the melted material and melted extractant at a temperature and ...

Membrane assisted solvent extraction for rare earth ...

Method of treating rare earth metal-bearing scrap, waste or other material (e.g. Nd--Fe--B or Dy--Tb--Fe scrap) to recover the rare earth metal comprising melting the rare earth metal-bearing material, melting a Group IIA metal extractant, such as Mg, Ca, or Ba, in which the rare earth is soluble in the molten state, and contacting the melted material and melted extractant at a temperature and ...

Rare-Earth Metal Recovery for Green Technologies: …

Because of their rarity, utility, and importance, the recovery, utilization and recycling of rare earth metals is of utmost importance. This book presents both current methods of processing rare earths from primary and secondary sources and new, green routes for their isolation and purifi ion.

Rare opportunity to recycle rare earths - Recycling Today

Rare opportunity to recycle rare earths. ... used in other appli ions through resizing or reshaping or processed back to rare-earth metal. This recovery method also can be adapted to target other consumer goods containing rare-earth magnets, ... CMI created a table of more than 460 U.S. patents, ...

recovery scandium plant - pestenopbasisscholen.nl

Sumitomo Metal building rare earth recovery plant in … Ucore Separates Scandium at 99 Recovery via SuperLig -One Pilot Plant May 24 20 6 HALIFAX NOVA SCOTIA Ucore Rare Metals Inc TSXV UCU OTCQX UURAF Ucore or the Company is pleased to update on the continuing performance of the SuperLig -One rare earth element REE separation pilot plant the Plant or SuperLig -One

Rare earth-transition metal scrap treatment …

Method of treating rare earth metal-bearing scrap, waste or other material (e.g. Nd--Fe--B or Dy--Tb--Fe scrap) to recover the rare earth metal comprising melting the rare earth metal-bearing material, melting a Group IIA metal extractant, such as Mg, Ca, or Ba, in which the rare earth is soluble in the molten state, and contacting the melted material and melted extractant at a temperature and ...

US Patent Appli ion for RARE EARTH PERMANENT …

A sintered magnet body (RaT bMcBd) coated with a powder mixture of an intermetallic compound (R iM j, R xT2yM z, R iM jHk), alloy (M dM2e) or metal (M ) powder and a rare earth (R

New Purdue technologies to extract, purify critical rare ...

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.

Rare earth-transition metal scrap treatment method …

Method of treating rare earth metal-bearing scrap, waste or other material (e.g. Nd--Fe--B or Dy--Tb--Fe scrap) to recover the rare earth metal comprising melting the rare earth metal-bearing material, melting a Group IIA metal extractant, such as Mg, Ca, or Ba, in which the rare earth is soluble in the molten state, and contacting the melted material and melted extractant at a temperature and ...

New Purdue technologies to extract, purify critical rare ...

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.

Recovery of rare earth metals through biosorption: An ...

JOURNAL OF RARE EARTHS, Vol. 3 , No. 0, Oct. 20 3, P. 933 * Corresponding author: Nilanjana Das (E-mail: [email protected]; Tel.: +9 -4 6-2202478) DOI: 0. 0 6/S 002-072 ( 2)60382-2 Recovery of rare earth metals through biosorption: An overview Nilanjana Das * , Devlina Das (Bioremediation Laboratory, Environmental Biotechnology Division, School of Biosciences and Technology, VIT …

Review on hydrometallurgical recovery of rare earth …

Review on hydrometallurgical recovery of rare earth metals from various resources • Various leachants used to recover rare earths from primary and secondary resources • Solvent extraction studies using ionic, anionic, chelating, etc. extractants • Separation of rare earth metals from chloride, nitrate, phosphate, etc. solutions

Researchers advance recovery of rare earths ... - E-Scrap …

Using the technology, researchers extracted rare earths from shredded hard drives without pre-sorting or concentrating the magnet content. The process did not produce fumes. “Available rare earth elements recovery methods are rarely profitable,” stated Denis Prodius, postdoctoral researcher.

Recovery of rare-earth alloy ... - Free Patents Online

4- 0- 975� 83; What is claimed is . A process for recovering rare earth alloy particles having useful magnetic properties from a material comprised of calcium hyroxide, calcium oxide and rare earth alloy particles, said calcium hydroxide and calcium oxide being present in an amount ranging from about 0% to 30% by weight of said rare earth alloy particles, said rare earth alloy particles having an average ...

Rare Earth Metal Recovery Systems & Technologies | …

SAMCO has plenty of expertise in applying membranes and various types of resins and chemical processes to separate out rare earth metals, such as cadmium, indium, and rhenium. Contact us to set up an immediate call with one of our engineers and see if our rare earth metals recovery innovations can help meet your needs.

UK Researchers First to Produce High Grade Rare Earths ...

LEXINGTON, Ky. (Nov. 20, 20 7) — University of Kentucky researchers have produced nearly pure rare earth concentrates from Kentucky coal using an environmentally-conscious and cost-effective process, a groundbreaking accomplishment in the energy industry. "As far as I know, our team is the first in the world to have provided a 98 percent pure rare earth concentrate from a coal source," said ...