Published February 2008 | Version v1
Journal article Metadata-only

Fluorination of beryllium concentrates with ammonium fluorides

Creators

  • 1. Tomskij Politekhnicheskij Univ., Tomsk (Russian Federation)

Description

New method for processing of beryllium ores to beryllium oxide was suggested and studied. The method is based on decomposition of bertrandite or phenacite with ammonium fluoride, with the subsequent leaching of ammonium tetrafluoroberyllate and precipitation of beryllium hydroxide from the solution. The thermodynamic characteristics were calculated and thermogravimetric studies of the process were conducted. The kinetics of beryllium oxide fluorination with ammonium fluoride was experimentally studied. A closed-cycle flowsheet is suggested for processing of beryllium-containing raw materials with ammonium fluoride

Abstract (Russian)

Предложен и исследован новый метод переработки бериллиевого рудного сырья до оксида бериллия. Метод основан на разложении бертрандита или фенакита фторидами аммония с последующим выщелачиванием тетрафторобериллата аммония и осаждением из раствора гидроксида бериллия. Рассчитаны термодинамические характеристики и проведены термогравиметрические исследования процесса. Экспериментально исследована кинетика фторирования оксида бериллия фторидом аммония. Предложена технологическая схема замкнутого цикла переработки бериллийсодержащего сырья с помощью фторида аммония

Additional details

Additional titles

Original title (Russian)
Фторирование бериллиевых концентратов фторидами аммония

Publishing Information

Journal Title
Zhurnal Prikladnoj Khimii
Journal Volume
81
Journal Issue
2
Journal Page Range
p. 190-194
ISSN
0044-4618
CODEN
ZPKHAB

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
39117599
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
AMMONIUM FLUORIDES; BERYLLIUM OXIDES; BERYLLIUM SILICATES; CHEMICAL REACTION KINETICS; FLOWSHEETS; FLUORINATION; FREE ENTHALPY; LEACHING; ORE CONCENTRATES; ORE PROCESSING; PRECIPITATION; REACTION HEAT; TEMPERATURE RANGE 0400-1000 K
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; AMMONIUM COMPOUNDS; AMMONIUM HALIDES; BERYLLIUM COMPOUNDS; CHALCOGENIDES; CHEMICAL REACTIONS; DIAGRAMS; DISSOLUTION; ENERGY; ENTHALPY; FLUORIDES; FLUORINE COMPOUNDS; HALIDES; HALOGEN COMPOUNDS; HALOGENATION; INFORMATION; KINETICS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; PROCESSING; REACTION KINETICS; SEPARATION PROCESSES; SILICATES; SILICON COMPOUNDS; TEMPERATURE RANGE; THERMODYNAMIC PROPERTIES

Optional Information

Notes
13 refs., 2 figs., 1 tab.