Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
A process for converting impure plutonium dioxide (approx. 96% pure) to high-purity plutonium metal (>99.9%) was developed. The process consists of reducing the oxide to an impure plutonium metal intermediate with calcium metal in molten calcium chloride. The impure intermediate metal is cast into an anode and electrorefined to produce high-purity plutonium metal. The oxide reduction step is being done now on a 0.6-kg scale with the resulting yield being>99.5%. The electrorefining is being done on a 4.0-kg scale with the resulting yield being 80 to 85%. The purity of the product, which averages 99.98%, is essentially insensitive to the purity of the feed metal. The yield, however, is directly dependent on the chemical composition of the feed. To date, approximately 250 kg of impure oxide has been converted to pure metal by this processing sequence. The availability of impure plutonium dioxide, together with the need for pure plutonium metal, makes this sequence a valuable plutonium processing tool.
Fused Salt Processing of Impure Plutonium Dioxide to High-purity Plutonium Metal
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
A process for converting impure plutonium dioxide (approx. 96% pure) to high-purity plutonium metal (>99.9%) was developed. The process consists of reducing the oxide to an impure plutonium metal intermediate with calcium metal in molten calcium chloride. The impure intermediate metal is cast into an anode and electrorefined to produce high-purity plutonium metal. The oxide reduction step is being done now on a 0.6-kg scale with the resulting yield being>99.5%. The electrorefining is being done on a 4.0-kg scale with the resulting yield being 80 to 85%. The purity of the product, which averages 99.98%, is essentially insensitive to the purity of the feed metal. The yield, however, is directly dependent on the chemical composition of the feed. To date, approximately 250 kg of impure oxide has been converted to pure metal by this processing sequence. The availability of impure plutonium dioxide, together with the need for pure plutonium metal, makes this sequence a valuable plutonium processing tool.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
A process for converting impure plutonium dioxide (approx. 96% pure) to high-purity plutonium metal (>99.9%) was developed. The process consists of reducing the oxide to an impure plutonium metal intermediate with calcium metal in molten calcium chloride. The impure intermediate metal is cast into an anode and electrorefined to produce high-purity plutonium metal. The oxide reduction step is being done now on a 0.6-kg scale with the resulting yield being>99.5%. The electrorefining is being done on a 4.0-kg scale with the resulting yield being 80 to 85%. The purity of the product, which averages 99.98%, is essentially insensitive to the purity of the feed metal. The yield, however, is directly dependent on the chemical composition of the feed. To date, approximately 250 kg of impure oxide has been converted to pure metal by this processing sequence. The availability of impure plutonium dioxide, together with the need for pure plutonium metal, makes this sequence a valuable plutonium processing tool.
Plutonium Processing in the Nuclear Weapons Complex
Author:
Publisher: DIANE Publishing
ISBN: 9781568065687
Category :
Languages : en
Pages : 40
Book Description
Describes the methods and facilities for DOE's processing of plutonium for use in nuclear weapons. DOE no longer produces plutonium but processes and recycles the plutonium from retired nuclear weapons and the plutonium that remains as scrap or residue from plutonium processing. It has used two basic processes: aqueous and pyrochemical, at four processing sites, although only one site is currently operating. Photos, drawings and charts.
Publisher: DIANE Publishing
ISBN: 9781568065687
Category :
Languages : en
Pages : 40
Book Description
Describes the methods and facilities for DOE's processing of plutonium for use in nuclear weapons. DOE no longer produces plutonium but processes and recycles the plutonium from retired nuclear weapons and the plutonium that remains as scrap or residue from plutonium processing. It has used two basic processes: aqueous and pyrochemical, at four processing sites, although only one site is currently operating. Photos, drawings and charts.
Large Scale Preparation of High Purity Plutonium Metal by Electrorefining (preliminary Report)
Author: Lorin John Mullins
Publisher:
ISBN:
Category : Plutonium
Languages : en
Pages : 38
Book Description
Publisher:
ISBN:
Category : Plutonium
Languages : en
Pages : 38
Book Description
The Preparation of High-purity Plutonium Dioxide and Plutonium (III) Chloride Solution
Author: James E. Rein
Publisher:
ISBN:
Category : Plutonium
Languages : en
Pages : 32
Book Description
Publisher:
ISBN:
Category : Plutonium
Languages : en
Pages : 32
Book Description
Fused Salt Electrorefining of Molten Plutonium and Its Alloys
Author: Lorin John Mullins
Publisher:
ISBN:
Category : Fused salts
Languages : en
Pages : 38
Book Description
Publisher:
ISBN:
Category : Fused salts
Languages : en
Pages : 38
Book Description
Pyrochemical Processing of Plutonium. Technology Review Report
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Non-aqueous processes are now in routine use for direct conversion of plutonium oxide to metal, molten salt extraction of americium, and purification of impure metals by electrorefining. These processes are carried out at elevated temperatures in either refractory metal crucibles or magnesium-oxide ceramics in batch-mode operation. Direct oxide reduction is performed in units up to 700 gram PuO2 batch size with molten calcium metal as the reductant and calcium chloride as the reaction flux. Americium metal is removed from plutonium metal by salt extraction with molten magnesium chloride. Electrorefining is used to isolate impurities from molten plutonium by molten salt ion transport in a controlled potential oxidation-reduction cell. Such cells can purify five or more kilograms of impure metal per 5-day electrorefining cycle. The product metal obtained is typically> 99.9% pure, starting from impure feeds. Metal scrap and crucible skulls are recovered by hydriding of the metallic residues and recovered either as impure metal or oxide feeds.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Non-aqueous processes are now in routine use for direct conversion of plutonium oxide to metal, molten salt extraction of americium, and purification of impure metals by electrorefining. These processes are carried out at elevated temperatures in either refractory metal crucibles or magnesium-oxide ceramics in batch-mode operation. Direct oxide reduction is performed in units up to 700 gram PuO2 batch size with molten calcium metal as the reductant and calcium chloride as the reaction flux. Americium metal is removed from plutonium metal by salt extraction with molten magnesium chloride. Electrorefining is used to isolate impurities from molten plutonium by molten salt ion transport in a controlled potential oxidation-reduction cell. Such cells can purify five or more kilograms of impure metal per 5-day electrorefining cycle. The product metal obtained is typically> 99.9% pure, starting from impure feeds. Metal scrap and crucible skulls are recovered by hydriding of the metallic residues and recovered either as impure metal or oxide feeds.
Reactor Fuel Processing
A Pyrochemical Process for the Reduction of Plutonium Dioxide to Metal
Author: Rowland E. Felt
Publisher:
ISBN:
Category : Plutonium
Languages : en
Pages : 28
Book Description
Publisher:
ISBN:
Category : Plutonium
Languages : en
Pages : 28
Book Description