Cinder aggregate from purex waste
CA 1196180 A · Owner: Westinghouse Electric Corporation · Inventors: Harrison, Don E.; Lahoda, Edward J.; Pope, James M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a process for making a cinder aggregate from neutralized PUREX waste. The PUREX waste is concentrated to about 30 to about 40 percent solids and a colloid of such de-alcoholated alkoxides of silicon boron, and aluminum are added to the PUREX waste as are necessary to produce a mixture containing about 0.001 to about 1 percent aluminum hydroxide, about 5 to about 15 percent silica, and about 1 to about 3 percent boric oxide. The resulting mixture is heated to about 400 to about 700°C which produces a cinder. The cinder will be transported to a vitrification center where it can be disintegrated in ammonium hydroxide and the nuclear waste can be permanently encapsulated in glass.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted November 5, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 5, 2002.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.