canada identifies top rare earth projects mineral processing
Apr 13 2020 · As the West looks to establish a non Chinese source of supply of critical rare earth elements one Canadian company has been successfully expanding its rare earths project as well as discovering some additional valuable metals like zirconium Zr and hafnium Hf Zirconium dioxide ZrO 2 is used in laboratory crucibles metallurgical furnaces as a refractory material .
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