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2 106 704

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C1

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IPC

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Application

96111878/25, 1996-06-13

(22)

Actual filing date

1996-06-13

(45)

Published

1998-03-10

(72)

Inventor

Eperin A.P.Beljanin L.A.Gribanenkov S.V.Shvedov A.A.Tishkov V.M.Zemskov A.A.

(73)

Holder

Leningradskaja Atomnaja Ehlektrostantsija Im.V.I.Lenina

RADIOACTIVE SLUDGE SOLIDIFICATION PROCESS Russian patent published in 1998 - IPC

Abstract RU 2106704 C1

FIELD: recovery of nuclear power plant radioactive wastes deposited, for example, in cooling ponds. SUBSTANCE: process includes mixing of suspended radioactive solids and powdered granular metallurgical slag in proportion of 3.2-4.5 mass parts of slag per 1 mass part of suspended solid phase. Mixture is allowed to settle down, clay powder in the amount of 0.8-1.5 mass parts per 1 mass part of suspended solid phase and sodium alkali in the amount of 0.032-0.045 mass parts per 1 mass part of suspended solid phase are added to sediment. Mixture obtained is stirred and solidified for 28 days. EFFECT: improved strength of solid block, reduced leaching of radionuclides out of solid block, reduced slag consumption for producing solid product, and four-five times reduced volume of solid product to be disposed. 1 tbl

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RU 2 106 704 C1

Authors

Eperin A.P.

Beljanin L.A.

Gribanenkov S.V.

Shvedov A.A.

Tishkov V.M.

Zemskov A.A.

Dates

1998-03-10—Published

1996-06-13—Filed

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