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US 4,906,409 AGranted
Method for the treatment and conveyance of feed sludge
AssigneeDeutsche Gesellschaft fur Wiederaufarbeitung von Kernbrennstoffen GmbH
InventorPeter Leister
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Abstract
Apparatus and method for treating and conveying feed sludge to a vitrification device in which sludge in suspension is dried in a fluid bed of preheated glass frit suspended in nitrogen gas. The mixture of dried glass frit and sludge is conveyed pneumatically in a stream of nitrogen gas to the vitrification device. The dried mixture flows through conduits without causing blockage which characterized the prior art.
Claims4
A method for the treatment and delivery of a nuclear feed sludge suspension to be vitrified comprising
- admixing a predetermined quantity of preheated glass frit with said feed sludge suspension in a bed fluidized above flowing streams of inert drying gas, the quantity of glass frit being sufficient, with heat from said drying gas, to dry and subsequently vitrify said sludge,
- - withdrawing said dried mixture from said fluidized bed,
- - entraining said dried mixture in a flowing inert gas stream,
- - conveying said dried mixture in said gas stream to a remote point,
- - separating the gas from said dried mixture, and
- - vitrifying said dried sludge.
3 more elements
Dependencies are inferred from the claim text.