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US 4,834,914 AGranted
Radioactive waste disposal system and method
OwnerO. L. Jacksoninventor
Life of this patent
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OwnerO. L. Jacksoninventor
Estimating the term…
Dry, compactable radioactive waste material having a low specific activity and comprised approximately of eighty-five percent plastic material and fifteen percent non-plastic material is shredded and granulated. The granulated material is supplied under heat and pressure to an extruder which will extrude the waste material in plasticized form into a drum for disposal. Radioactive ion exchange resin beads may also be dewatered and mixed in predetermined amounts with the dry granulated material for encapsulation within the plasticized waste for disposal. The plasticized waste material, with or without the resin, is horizontally extruded into a horizontally disposed drum between a compacting disk secured to the extruder barrel and the bottom of the drum. Controlled pressure is applied against the bottom of the drum whereby the plasticized material will completely fill the space between the disk and the bottom of the drum and gradually push the drum bottom away from the sik as the drum is filled.
A radioactive waste disposal system comprising grinding means for granulating dry compactable plastic and non-plastic LSA material to provide a mixture of granulated material according to a predetermined ratio of plastic to non-plastic material and heated extrusion means operatively connected to said grinder means for plasticizing the granulated material and extruding the plasticized material into a container for subsequent solidification and disposal, combination dryer and mixing means disposed intermediate said grind means and said extrusion means, first feed means for supplying a measured amount of said dry granulated LSA material from said grinder means to said dryer and mixing means, second feed means supplying a measured amount of wet, radioactive resin to said dryer and mixing means and conveyor means for conveying a dried mixture of resin and granulate from said dryer and mixing means to said extrusion means.
A radioactive waste disposal system
A process for disposing of radioactive waste comprising granulating dry compactable plastic and non-plastic radioactive LSA material to provide granulated LSA material having a predetermined ratio of plastic to non-plastic material, supplying the granulated LSA material under heat and pressure to a heated extruder, extruding the LSA material in plasticized form into a drum form for solidification and disposal, dewatering radioactive resin material having a higher level of radioactive activity than the LSA material, supplying the dewatered resin material and the granulated LSA material in a predetermined ratio to a combination dryer and mixer and supplying the dried mixture of resin and granulated LSA material to the extruder means.
Dependencies are inferred from the claim text.