PREPARATION OF HIGH-DENSITY THORIUM OXIDE SPHERES
Abstract
A method of preparing high-density thorium oxide spheres for use in pellet beds in nuclear reactors is presented. Sinterable thorium oxide is first converted to free-flowing granules by means such as compression into a compact and comminution of the compact. The granules are then compressed into cubes having a density of 5.0 to 5.3 grams per cubic centimeter. The cubes are tumbled to form spheres by attrition, and the spheres are then fired at 1250 to 1350 deg C. The fired spheres are then polished and fired at a temperature above 1650 deg C to obtain high density. Spherical pellets produced by this method are highly resistant to mechanical attrition hy water. (AEC)
- Inventors:
- Issue Date:
- Research Org.:
- Originating Research Org. not identified
- OSTI Identifier:
- 4126877
- Patent Number(s):
- 3116106
- Assignee:
- U.S. Atomic Energy Commission
- Patent Classifications (CPCs):
-
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01F - COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
G - PHYSICS G21 - NUCLEAR PHYSICS G21C - NUCLEAR REACTORS
- NSA Number:
- NSA-18-004235
- Resource Type:
- Patent
- Resource Relation:
- Other Information: Orig. Receipt Date: 31-DEC-64
- Country of Publication:
- United States
- Language:
- English
- Subject:
- METALS, CERAMICS, AND OTHER MATERIALS; CLEANING; COMPACTING; CORROSION; DENSITY; EROSION; HEATING; PARTICLES; PELLETS; PREPARATION; SPHERES; THORIUM OXIDES; WATER
Citation Formats
McNees, Jr, R A, and Taylor, A J. PREPARATION OF HIGH-DENSITY THORIUM OXIDE SPHERES. United States: N. p., 1963.
Web.
McNees, Jr, R A, & Taylor, A J. PREPARATION OF HIGH-DENSITY THORIUM OXIDE SPHERES. United States.
McNees, Jr, R A, and Taylor, A J. Tue .
"PREPARATION OF HIGH-DENSITY THORIUM OXIDE SPHERES". United States.
@article{osti_4126877,
title = {PREPARATION OF HIGH-DENSITY THORIUM OXIDE SPHERES},
author = {McNees, Jr, R A and Taylor, A J},
abstractNote = {A method of preparing high-density thorium oxide spheres for use in pellet beds in nuclear reactors is presented. Sinterable thorium oxide is first converted to free-flowing granules by means such as compression into a compact and comminution of the compact. The granules are then compressed into cubes having a density of 5.0 to 5.3 grams per cubic centimeter. The cubes are tumbled to form spheres by attrition, and the spheres are then fired at 1250 to 1350 deg C. The fired spheres are then polished and fired at a temperature above 1650 deg C to obtain high density. Spherical pellets produced by this method are highly resistant to mechanical attrition hy water. (AEC)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 31 00:00:00 EST 1963},
month = {Tue Dec 31 00:00:00 EST 1963}
}
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