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2 116 685

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Application

97103760/25, 1997-03-11

(22)

Actual filing date

1997-03-11

(45)

Published

1998-07-27

(72)

Inventor

Kurnosov V.A.Shmakov L.V.Tishkov V.M.Gribanenkov S.V.Pankratov V.N.Olejnik M.S.Shvedov A.A.

(73)

Holder

Leningradskaja Atomnaja Ehlektrostantsija Im.V.I.Lenina

METHOD FOR PROCESSING RADIOACTIVE ION-EXCHANGE RESINS Russian patent published in 1998 - IPC

Abstract RU 2116685 C1

FIELD: treatment of radioactive ion-exchange resins by curing. SUBSTANCE: method includes mixing of dehydrated ion-exchange resins with ground radioactive PVC materials. Mixture is heated up to 140-150 C, placed in PVC bags and pressed to form fused monolith. After heating, gradual cooling is effected. Ion-exchange resins are mixed with PVC wastes, preferably, in weight ratio (60-70):(40-30). Pressing is carried out at pressure of 3-4 MPa for 15-25 min. Cooling is carried out at the same pressure for 3.0-3.5 h down to temperature of 20-30 C. EFFECT: increased degree of filling of cured products with ion-exchange resin and decreased degree of radionuclide leaching from them. 5 cl, 1 tbl

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RU 2 116 685 C1

Authors

Kurnosov V.A.

Shmakov L.V.

Tishkov V.M.

Gribanenkov S.V.

Pankratov V.N.

Olejnik M.S.

Shvedov A.A.

Dates

1998-07-27—Published

1997-03-11—Filed

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