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Title: Thorium metal production by a chlorination process

Abstract

The production of thorium metal from thorium oxide via a chloride route is described. The route is based on the formation in situ of anhydrous thorium chioride in an alkali chloride melt, the melt being maintained molten throughout the process. It consists of two stages: chlorination of a thoria-carbon mixture suspended in a fused alkali chloride bath to yield a melt of thorium chloride dissolved in alkali chiorides; and the electrolysis of this melt to produce thorium metal at the cathode. The chlorination stage of the process is more difficult technologically than the electrolysis stage. Basically, it comprises the reaction ThO/sub 2/ + 2C + 2Cl/sub 2/ yields ThCl/sub 4/ + 2CO. The variables affecting this reaction have been extensively studied, and from this study three different ways of carrying out this reaction have been developed. These are: chlorination of thoria suspended in a fused chloride melt by cylinder chlorine, using the carbon in the form of a shaped block, and iron chloride as a catalyst; chlorination of an intimate mixture of thoria and carbon suspended in a melt by cylinder chlorine, without a catalyst; and chlorination of thoria suspended in a melt by nascent chlorine liberated at a carbonmore » anode surface, the anode itself serving as reducing agent. The relative advantages of these routes are discussed. (auth)« less

Authors:
; ; ;
Publication Date:
Research Org.:
Atomic Energy Research Establishment, Harwell (United Kingdom)
OSTI Identifier:
4264790
Report Number(s):
A/CONF.15/P/1468
NSA Number:
NSA-13-006374
Resource Type:
Technical Report
Resource Relation:
Conference: 2. United Nations International Conference on the Peaceful Uses of Atomic Energy, Geneva (Switzerland), Jun 1958
Country of Publication:
United Kingdom
Language:
English
Subject:
CHEMISTRY; ALKALI METALS; ANODES; CARBON; CARBON MONOXIDE; CATALYSIS; CATHODES; CHEMICAL REACTIONS; CHLORIDES; CHLORINATION; CHLORINE; CONFIGURATION; ELECTROCHEMISTRY; ELECTRODEPOSITION; ELECTROLYSIS; FABRICATION; FUSED SALTS; GASES; GRAIN SIZE; IMPURITIES; IRON CHLORIDES; LABORATORY EQUIPMENT; METALS; MIXING; OPERATION; PERFORMANCE; PREPARATION; PRODUCTION; QUANTITY RATIO; REACTION KINETICS; REDUCTION; SOLIDS; SOLUTIONS; SUSPENSIONS; THORIUM; THORIUM CHLORIDES; THORIUM OXIDES; WATER

Citation Formats

Gibson, A. R., Buddery, J. H., Chalkley, J. R., and Marshall, R. P. Thorium metal production by a chlorination process. United Kingdom: N. p., 1958. Web.
Gibson, A. R., Buddery, J. H., Chalkley, J. R., & Marshall, R. P. Thorium metal production by a chlorination process. United Kingdom.
Gibson, A. R., Buddery, J. H., Chalkley, J. R., and Marshall, R. P. Tue . "Thorium metal production by a chlorination process". United Kingdom. https://www.osti.gov/servlets/purl/4264790.
@article{osti_4264790,
title = {Thorium metal production by a chlorination process},
author = {Gibson, A. R. and Buddery, J. H. and Chalkley, J. R. and Marshall, R. P.},
abstractNote = {The production of thorium metal from thorium oxide via a chloride route is described. The route is based on the formation in situ of anhydrous thorium chioride in an alkali chloride melt, the melt being maintained molten throughout the process. It consists of two stages: chlorination of a thoria-carbon mixture suspended in a fused alkali chloride bath to yield a melt of thorium chloride dissolved in alkali chiorides; and the electrolysis of this melt to produce thorium metal at the cathode. The chlorination stage of the process is more difficult technologically than the electrolysis stage. Basically, it comprises the reaction ThO/sub 2/ + 2C + 2Cl/sub 2/ yields ThCl/sub 4/ + 2CO. The variables affecting this reaction have been extensively studied, and from this study three different ways of carrying out this reaction have been developed. These are: chlorination of thoria suspended in a fused chloride melt by cylinder chlorine, using the carbon in the form of a shaped block, and iron chloride as a catalyst; chlorination of an intimate mixture of thoria and carbon suspended in a melt by cylinder chlorine, without a catalyst; and chlorination of thoria suspended in a melt by nascent chlorine liberated at a carbon anode surface, the anode itself serving as reducing agent. The relative advantages of these routes are discussed. (auth)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United Kingdom},
year = {1958},
month = {6}
}

Technical Report:

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