The mechanism for production of beryllium fluoride from the product of ammonium fluoride processing of beryllium- containing raw material

8th International Scientific Conference "Issues of Physics and Technology in Science, Industry and Medicine"

物理学;工业技术;医药卫生

Kraydenko, R.I.^1 ; Dyachenko, A.N.^1 ; Malyutin, L.N.^1 ; Petlin, I.V.^1

National Research Tomsk Polytechnic University, Institute of Physics and Technology, Department of Rare, Scattered and Radioactive Element Technology, 30 Lenin avenue., Tomsk

634050, Russia^1

关键词: Ammonium bifluoride;    Ammonium fluoride;    Ammonium tetrafluoroberyllate;    Beryllium fluoride;    Hydroscopic;    Low temperatures;    Temperature modes;    Thermal dissociation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/135/1/012021/pdf
DOI  :  10.1088/1757-899X/135/1/012021

来源: IOP

【 摘 要 】

The technique of fluorite-phenacite-bertrandite ores from Russian Ermakovskoe deposit processing by ammonium bifluoride is described. To determine the temperature mode and the thermal dissociation mechanism of ammonium tetrafluoroberyllate (the product of ammonium-fluoride leaching of the ore) the TG/DTA have been carried out. By IR spectroscopy and XRD the semi-products of ammonium tetrafluoroberyllate thermal dissociation have been identified. The hygroscopic low-temperature beryllium fluoride forms higher than 380°C. The less hydroscopic form of BeF2have been produced at 600°C.