Non-thermal process for extracting rare earths from bastnaesite by means of mechanochemical treatment

摘要: A novel process for extracting rare earths such as Ce, La contained in bastnaesite mineral (ReCO33F, Re = earths) has been developed this work. This is composed of three steps. The first step milling the mixture and NaOH powders, forming mechanochemically Re(OH)3 Na compounds. second washing ground with water, removing soluble third leaching washed powder HCl or H2SO4 solutions at room temperature, earths. extractive yield improved an increase time. Furthermore, solution superior to a medium. In present work, more than 90% sample was extracted by dilute from milled 120 min.