Published January 1981 | Version v1
Journal article Metadata-only

Application of neutron activation analysis to the determination of alumina grades in bulk bauxite samples

Creators

  • 1. Commonwealth Scientific and Industrial Research Organization, Port Melbourne (Australia). Div. of Mineral Physics

Description

A thermal neutron activation method has been developed to determine alumina grades in both dried and undried bulk bauxite samples (approximately 16kg). The particle sizes of the dried samples (0.2-50% free moisture) varied from powder to natural pisolites (<28 cm diameter). For the undried samples (10-14% free moisture), the particles were in pisolitic form only. The accuracy for bauxite containing 48-62% alumina was 0.45% Al2O3(1 SD) for both categories of samples. Data analysis showed that the essential parameters for accurate alumina determinations were the count rates of both the 1.78 MeV 28Al γ-rays and the thermal neutrons. (author)

Additional details

Publishing Information

Journal Title
Int. J. Appl. Radiat. Isot.
Journal Volume
32
Journal Issue
1
Series
Int. J. Appl. Radiat. Isot.
Journal Page Range
43-46
ISSN
0020-708X

INIS

Country of Publication
United Kingdom
Country of Input or Organization
United Kingdom
INIS RN
12594666
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
ACCURACY; ALUMINIUM OXIDES; ALUMINIUM 28; BAUXITE; COUNTING RATES; GAMMA RADIATION; HUMIDITY; NEUTRON ACTIVATION ANALYSIS; PARTICLE SIZE; SAMPLING; THERMAL NEUTRONS; VOLUME
Descriptors DEC
ACTIVATION ANALYSIS; ALUMINIUM COMPOUNDS; ALUMINIUM ISOTOPES; ALUMINIUM ORES; BARYONS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CHALCOGENIDES; CHEMICAL ANALYSIS; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; FERMIONS; HADRONS; IONIZING RADIATIONS; ISOTOPES; LIGHT NUCLEI; MINUTES LIVING RADIOISOTOPES; NEUTRONS; NUCLEI; NUCLEONS; ODD-ODD NUCLEI; ORES; OXIDES; OXYGEN COMPOUNDS; RADIATIONS; RADIOISOTOPES; SIZE