Rastvaranje elemenata retkih zemalja sumpornom kiselinom iz ruda koje sadrže fluorokarbonatni mineral

  • Srećko R. Stopić RWTH Aachen University, IME Process Metallurgy and Metal Recycling, Aachen
  • Bernd G. Friedrich RWTH Aachen University, IME Process Metallurgy and Metal Recycling, Aachen
Ključne reči: rare earth elements||, ||elementi retkih zemalja, hydrometallurgy||, ||hidrometalurgija, bastnasite||, ||fluorokarbonatni mineral, sulfuric acid||, ||sumporna kiselina,

Sažetak


Ispitivano je rastvaranje elemenata retkih zemalja iz ruda koje sadrže fluorokarbonatni mineral pomoću sumporne kiseline pri atmosferskom pritisku. Rezultati rastvaranja u jednom koraku pomoću sumporne kiseline pokazuju da ne dolazi do problema prilikom filtriranja pri izboru raznih parametara. Najbolje su se pokazale kombinacije parametara s niskim temperaturama i malim koncentracijama kiseline. Direktno rastvaranje je jednostavan proces u kojem se koristi najjeftinija kiselina na tržištu. Posebnu pažnju treba obratiti na formiranje gela, naročito tokom procesa s većim zapreminama rastvora, kao i na naknadno  uklanjanje  kalcijuma iz rastvora.

Biografija autora

Srećko R. Stopić, RWTH Aachen University, IME Process Metallurgy and Metal Recycling, Aachen

Dr.-Ing. tehnickih nauka

Metalurgija, naucni saradnik

Reference

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Objavljeno
2018/09/03
Rubrika
Originalni naučni radovi