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Title: Scale-up of Lithium Aluminate Pellet Manufacturing with a Flowable Powder

Thin-walled, high-density lithium aluminate pellets are challenging to manufacture for nuclear reactor applications. The key to scale-up of production was the development of flowable, high density, lithium aluminate powder that permitted (1) automated isostatic pressing, (2) low compaction during pressing, (3) low shrinkage during firing, (4) elimination of chlorine-containing fumed alumina and (5) near-net shape forming. A triple spray drying process was developed that included: (I) a unique-feedstock blend cycle, (II) a post-calcination grinding cycle, and (III) a high-pH final cycle with high solids loading slurry that was spray dried into flowable high-density spheres with large, uniform diameters. Today, pellet manufacturing at a rate of more than 400,000 per year is possible.
Authors:
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Publication Date:
OSTI Identifier:
15009477
Report Number(s):
PNWD-SA-6301
TRN: US0404431
DOE Contract Number:
AC06-76RL01830
Resource Type:
Conference
Resource Relation:
Conference: Conference title not supplied, Conference location not supplied, Conference dates not supplied; Other Information: PBD: 1 Jan 2004
Research Org:
Pacific Northwest National Lab., Richland, WA (US)
Sponsoring Org:
US Department of Energy (US)
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; ALUMINATES; GRINDING; LITHIUM COMPOUNDS; MANUFACTURING; PELLETS; PRESSING; REACTORS; SHRINKAGE; SPRAY DRYING; POWDER METALLURGY