Patent ID: 11957996
Assignee: SICHUAN NORMAL UNIVERSITY
Field: Chemical engineering (Chemistry)
Classification: CPC B  C  Y | IPC B  C

Claim 6:
7. The microwave chemical method for totally extracting fluorine and rare earth from bastnaesite concentrate according to claim 5, wherein the ICP-OES method comprises the specific operating steps: fixing the volume of the rare earth leaching solution after the microwave leaching into a 50 mL polyethylene bottle, transferring 1 mL of fixed-volume solution into a 100 mL volumetric flask, determining the rare earth content in the leaching solution by operating a computer, and calculating a leaching rate of the rare earth according to formula (2)

η2=(C2V2/w2m)×100%  (2)

wherein η2 is the leaching rate of rare earth in %; C2 is the concentration of rare earth elements in mol/L; V2 is the volume of the leaching solution in L; m is the mass of bastnaesite concentrate in g; and w2 is the mass percentage of the rare earth elements in the bastnaesite concentrate in %.