Novel Extraction Process Of Rare Earth Elements From NdFeB Powders Via Alkaline Treatment

On the Extraction of Rare Earth Elements from Geothermal Brines

The availability of rare earth elements from primary resources has come into question in the last two decades. This has sparked various government and industry initiatives to examine potential rare earth element resources apart from virgin ore bodies. Geothermal fluids are potentially significant sources of valuable minerals and metals, while co-recovery with geothermal energy production would ...

Rare Earth Elements Profile

Definitions and characteristics The rare earth elements (REE) (sometimes referred to as the rare earth metals) are a group of 17 chemically similar metallic elements, including the 15 lanthanides, scandium and yttrium. The lanthanides are elements spanning atomic numbers 57 (lanthanum, La) to 71 (lutetium, Lu) (Table 1). The lanthanides all occur in nature, although promethium, the rarest, only...

Effects of Rare Earth Elements on Properties of Ni-Base Superalloy Powders and Coatings

NiCrMoY alloy powders were prepared using inert gas atomization by incorporation of rare earth elements, such as Mo, Nb, and Y into Ni60A powders, the coatings were sprayed by oxy-acetylene flame spray and then remelted with high-frequency induction. The morphologies, hollow particle ratio, particle-size distribution, apparent density, flowability, and the oxygen content of the NiCrMoY alloy po...

Loss of Alkaline Earth Elements by Runoff from Agricultural Watersheds

A novel hybrid neural network for modeling rare-earth extraction process

Although neural networks are universal approximators, they are black-box models and it is difficult to obtain a suitable neural structure for a special unknown nonlinear system. Since many physical systems can be modeled by mechanistic models, we use these information to modify the normal neural identifiers and propose a novel neural modeling approach in this paper. This model includes a linear...