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2 214 012

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Application

2002118425/06, 2002-07-08

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Start date

2002-07-08

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Actual filing date

2002-07-08

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Published

2003-10-10

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Inventor

Chernikov O.G.Shmakov L.V.Cheremiskin V.I.Tishkov V.M.Chernikin A.V.Korchagin Ju.P.

(73)

Holder

Gosudarstvennoe Predprijatie Leningradskaja Atomnaja Ehlektrostantsija Im. V.I. Lenina

COAL SORBENT RECOVERY METHOD Russian patent published in 2003 - IPC

Abstract RU 2214012 C1

FIELD: recovering solid radioactive wastes including spent coal sorbents. SUBSTANCE: proposed method includes sorbent pre-pulverizing, mixing up with inorganic binder, water, and additives reducing radionuclide leachability. Radioactive coal sorbents are pre-pulverized in cone mill provided with delivery screw and bin with feed screw tilted through certain angle to longitudinal axis of delivery screw. Added to wastes being recovered is aqueous solution of surface-active substances in following coal sorbent to solution mass proportion: 1 : 1 to 1 : 0.01. Concentration of surface-active substances in solution is chosen between 0.01 and 50 mass percent. Proposed method provides for increasing admission of radioactive wastes in compound and reduced binder consumption. EFFECT: enhanced strength of solidified product, improved spreadability of cement compound. 4 cl, 1 dwg, 2 tbl, 6 ex

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RU 2 214 012 C1

Authors

Chernikov O.G.

Shmakov L.V.

Cheremiskin V.I.

Tishkov V.M.

Chernikin A.V.

Korchagin Ju.P.

Dates

2003-10-10—Published

2002-07-08—Filed

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