Published January 1991 | Version v1
Journal article Metadata-only

Thermodynamic modelling and experimental study of the decomposition process of rare earth phosphates by sintering with soda in the presence of quartz, hematite and fluorite

Creators

  • 1. AN SSSR, Moscow (USSR). Inst. Obshchej i Neorganicheskoj Khimii
  • 2. Moskovskij Inst. Tonkoj Khimicheskoj Tekhnologii, Moscow (USSR)

Description

High-temperature processes occuring in YPO4-LaPO4-Fe2O3-SiO2-CaF2-Na2CO3 mixture under variable ratios between the components are studied using thermodynamic modelling and a complex of chemical, x ray spectral and x ray phase analyses. Thermochemical characteristics of 16 yttrium and lanthanum compounds formed in Y-La-Si-O-Ca-F-Na system, necessary for calculations, are evaluated using semiempirical methods. Agreement of results of theoretic modelling with experimental data is shown

Additional details

Additional titles

Original title (Russian)
Термодинамическое моделирование и экспериментальное изучение процесса разложения фосфатов RZEh спеканием с содой в присуцтвии кварца, гематита и флюорита

Publishing Information

Journal Title
Zhurnal Neorganicheskoj Khimii
Journal Volume
36
Journal Issue
1
Series
Zh. Neorg. Khim.
Journal Page Range
49-55
ISSN
0044-457X
CODEN
ZNOKA

INIS

Country of Publication
Russian Federation
Country of Input or Organization
USSR
INIS RN
22083347
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
COMPARATIVE EVALUATIONS; COMPUTERIZED SIMULATION; DECOMPOSITION; EVALUATED DATA; EXPERIMENTAL DATA; FLUORITE; HEMATITE; HIGH TEMPERATURE; LANTHANUM PHOSPHATES; PHASE STUDIES; QUANTITY RATIO; QUARTZ; SODIUM CARBONATES; THERMODYNAMIC PROPERTIES; VERY HIGH TEMPERATURE; YTTRIUM PHOSPHATES
Descriptors DEC
ALKALI METAL COMPOUNDS; CARBON COMPOUNDS; CARBONATES; CHEMICAL REACTIONS; DATA; EVALUATION; HALIDE MINERALS; INFORMATION; IRON ORES; LANTHANUM COMPOUNDS; MINERALS; NUMERICAL DATA; ORES; OXIDE MINERALS; OXYGEN COMPOUNDS; PHOSPHATES; PHOSPHORUS COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; SIMULATION; SODIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS