Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Radioactive metal
Patent
1991-06-28
1992-10-13
Hunt, Brooks H.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Radioactive metal
252626, 423251, 20415743, B01F 100
Patent
active
051548992
ABSTRACT:
A method for recovering plutonium and other metals from materials by leaching comprising the steps of incinerating the materials to form a porous matrix as the residue of incineration, immersing the matrix into acid in a microwave-transparent pressure vessel, sealing the pressure vessel, and applying microwaves so that the temperature and the pressure in the pressure vessel increase. The acid for recovering plutonium can be a mixture of HBF.sub.4 and HNO.sub.3 and preferably the pressure is increased to at least 100 PSI and the temperature to at least 200.degree. C. The porous material can be pulverized before immersion to further increase the leach rate.
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Constant Richard E.
Dixon Harold M.
Hunt Brooks H.
Mai Ngoclan T.
Moser William R.
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