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US 4,364,859 AGranted
Method for producing oxide powder
AssigneeDoryokuro Kakunenryo Kaihatsu Jigyodan
InventorsKatsuyuki Ohtsuka, Jin Ohuchi, Yoshiharu Takahashi
Life of this patent
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Abstract
A method for the heat treatment of a radioactive substance by microwave power comprising preparing a nitrate solution of uranium, thorium, plutonium or a mixture thereof, and applying to the nitrate solution microwave energy sufficient to directly convert the nitrate solution into an oxide powder of uranium, thorium, plutonium or a mixture thereof, respectively. Such oxide powder is suitable for the manufacture of nuclear fuel pellets.
Claims9
A method for producing oxide powder suitable for the manufacture of nuclear fuel pellets, said method comprising:
- preparing a nitrate solution of uranium, thorium, plutonium or a mixture thereof;
- and
- applying to a substance consisting essentially of said nitrate solution microwave energy sufficient to directly convert said nitrate solution into a product consisting essentially of oxide powder of uranium, thorium, plutonium or a mixture thereof, respectively, suitable for the manufacture of nuclear fuel pellets.
Dependencies are inferred from the claim text.