Could coal ash be a viable source of rare-earth metals?
Friday, September 14, 2018 - 10:00
in Physics & Chemistry
Rare-earth elements, including neodymium and yttrium, are not actually rare – more common, in fact, in the Earth's crust than copper and tin. But, because they are scattered widely, and hard to separate from their surrounding ores, mining and refining them is difficult.