Granulation of fine powder
Abstract
A mixture of fine powder including thorium oxide was converted to granulated powder by forming a first-green-body and heat treating the first-green-body at a high temperature to strengthen the first-green-body followed by granulation by crushing or milling the heat-treated first-green-body. The granulated powder was achieved by screening through a combination of sieves to achieve the desired granule size distribution. The granulated powder relies on the thermal bonding to maintain its shape and structure. The granulated powder contains no organic binder and can be stored in a radioactive or other extreme environment. The granulated powder was pressed and sintered to form a dense compact with a higher density and more uniform pore size distribution.
- Inventors:
- Issue Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1289917
- Patent Number(s):
- 9409825
- Application Number:
- 13/971,157
- Assignee:
- Los Alamos National Security, LLC (Los Alamos, NM)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01F - COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- DOE Contract Number:
- AC52-06NA25396
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2013 Aug 20
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Chen, Ching-Fong. Granulation of fine powder. United States: N. p., 2016.
Web.
Chen, Ching-Fong. Granulation of fine powder. United States.
Chen, Ching-Fong. Tue .
"Granulation of fine powder". United States. https://www.osti.gov/servlets/purl/1289917.
@article{osti_1289917,
title = {Granulation of fine powder},
author = {Chen, Ching-Fong},
abstractNote = {A mixture of fine powder including thorium oxide was converted to granulated powder by forming a first-green-body and heat treating the first-green-body at a high temperature to strengthen the first-green-body followed by granulation by crushing or milling the heat-treated first-green-body. The granulated powder was achieved by screening through a combination of sieves to achieve the desired granule size distribution. The granulated powder relies on the thermal bonding to maintain its shape and structure. The granulated powder contains no organic binder and can be stored in a radioactive or other extreme environment. The granulated powder was pressed and sintered to form a dense compact with a higher density and more uniform pore size distribution.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2016},
month = {8}
}
Works referenced in this record:
Granulating fine powders into millimetric spheres with a multiscale porosity: The case of titania
journal, April 2011
- Pringuet, Antoine; Pagnoux, Cécile; Videcoq, Arnaud
- Microporous and Mesoporous Materials, Vol. 140, Issue 1-3, p. 17-24
Critical parameters and limiting conditions in binder granulation of fine powders
journal, December 1997
- Tardos, Gabriel I.; Khan, M. Irfan; Mort, Paul R.
- Powder Technology, Vol. 94, Issue 3, p. 245-258
Microgranulation of fine powders by a novel rotating fluidized bed granulator
journal, April 2003
- Watano, Satoru; Imada, Yasushi; Hamada, Kenji
- Powder Technology, Vol. 131, Issue 2-3, p. 250-255