EXTRACTION OF LANTHANUM AND CERIUM FROM A BASTNASITE ORE BY DIRECT ACIDIC LEACHING


Kursunoglu S., Top S., Hussaini S., Gökçen H. S. , Altıner M. , Özsaraç S., ...Daha Fazla

Bilimsel Madencilik Dergisi, cilt.59, ss.85-92, 2020 (Diğer Kurumların Hakemli Dergileri)

  • Cilt numarası: 59 Konu: 2
  • Basım Tarihi: 2020
  • Dergi Adı: Bilimsel Madencilik Dergisi
  • Sayfa Sayıları: ss.85-92

Özet

The extraction of lanthanum (La) and cerium (Ce) from a bastnasite ore by direct acidic leaching

was investigated. The effects of acid concentration and leaching temperature on the extraction of

La and Ce from the ore were tested. Using nitric (NHO3), more than 85% of the La and Ce were

simultaneously extracted into leach solution whereas the La and Ce dissolutions were determined

as less than 85% by using sulfuric acid (H2SO4). The La dissolution exceeded 90% by using

hydrochloric acid (HCl); however, the Ce dissolution remained below 85% under the following

conditions: solid-to-liquid ratio of 20% (w/v), the acid concentration of 20%, leaching temperature

of 25 °C and leaching time of 1 h. The result revealed that HNO3 could be used as a solvent for

the maximum simultaneous extraction of the La and Ce from the bastnasite ore. The leaching

temperature had no crucial effect on the dissolution of La and Ce when HNO3 or HCl solutions

were preferred as a solvating agent. However, the leaching temperature had a slight positive effect

on the dissolutions of La and Ce when H2SO4 was used as a solvent.