Preparation of rare earth metals
The production of rare earth metals is also called the production of rare earth pyrometallurgy. Rare earth metals are generally divided into mixed rare earth metals and single rare earth metals. The composition of mixed rare earth metals is similar to that of the original rare earth elements in ores. Using rare earth oxides (except oxides of samarium, europium, ytterbium and thulium) as raw materials, it is difficult to reduce to a single metal by general metallurgical methods because [...]