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Vojnotehnički glasnik
2018, vol. 66, br. 4, str. 757-770
jezik rada: engleski
vrsta rada: originalan članak
doi:10.5937/vojtehg66-17177

Creative Commons License 4.0
Rastvaranje elemenata retkih zemalja sumpornom kiselinom iz ruda koje sadrže fluorokarbonatni mineral
RWTH Aachen University, IME Process Metallurgy and Metal Recycling, Aachen, Federal Republic of Germany

e-adresa: sstopic@ime-aachen.de, bfriedrich@ime-aachen.de

Projekat

The research leading to these results has received funding from the European Communitys Seventh Framework Programme (Call identifier FP7-NMP-2012-LARGE-6) under grant agreement n°309373

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.

Ključne reči

Reference

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