Complex processing of titanium-rare metal raw material

The paper is devoted to investigation of the complex processing of titanium-rare metal raw materials with ammonium hydrodifluoride. It is stated that fluorination of the main components of the mineral raw materials with ammonium hydrodifluoride proceeds with formation of complex ammonium fluorometal...

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Bibliographic Details
Published in:E3S web of conferences 2018-01, Vol.56, p.3019
Main Authors: Medkov, Mikhail, Krysenko, Galina, Epov, Dantiy, Sitnik, Pavel, Avramenko, Valentin
Format: Article
Language:English
Subjects:
Ammonium
Coordination compounds
Fluorides
Fluorination
Iron
Leaching
Metals
Niobium
Rare earth elements
Raw materials
Salts
Tantalum
Titanium
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Summary:The paper is devoted to investigation of the complex processing of titanium-rare metal raw materials with ammonium hydrodifluoride. It is stated that fluorination of the main components of the mineral raw materials with ammonium hydrodifluoride proceeds with formation of complex ammonium fluorometallates and simple fluorides. It is showed that in the process of aqueous leaching of the fluorinated mineral raw material niobium and tantalum completely pass into solution together with titanium, iron, and silicon fluoroammonium salts while all the rare-earth elements stay in the insoluble residue as complex fluorosodium salts together with CaF 2 . The method of separation of the fluoroammonium salts with obtaining marketable products and isolation of the rare-earth elements from the insoluble residue is offered.
ISSN:2267-1242
2555-0403
2267-1242
DOI:10.1051/e3sconf/20185603019