WHY RARE EARTH OXIDES?
Rare Earth Elements usually occur in nature as Oxides of the metal in question. To understand Rare Earths as a commodity we need to know that resources and reserves are typically quantified as Rare Earths Oxides (REO), the targeted final product from many mining operations. The grades of rare earth oxides are often expressed in parts per million (ppm) or percent (%) of TREO, where......
TREO
TREO represents the total of the oxides of both heavy rare earth elements (HREO) and light rare earth elements (LREO)LREO
LREO is the total of the oxides of light rare earth elements.HREO
HREO is the sum of the oxides of the heavy rare earths elements: They are less common than LREO and generally of higher value.
CREO
CREO comprises oxides identified by the US Department of Energy in December 2011 as critical due to their significance to clean energy requirements and their supply risk. These include the oxides of Nd, Dy, Eu, Y, and Tb.
MAGREO
MagREO refers to rare earth oxides commonly utilized in creating high operating temperature Neodymium-Iron-Boron (NdFeB) permanent magnets, known for their durability and strength. These oxides include those of Nd, Pr, Dy, and Tb.