METHOD FOR HARDENING LIQUID HIGHLY ACTIVE WASTES Russian patent published in 2014 - IPC G21F9/04 

Abstract RU 2522274 C1

FIELD: chemistry.

SUBSTANCE: method involves converting wastes to a gel-like state and is characterised by that solutions of highly active wastes are mixed with zirconium and iron salts and glycerine to concentration of said salts of not less than 0.12, 0.6 and 0.25 M/l respectively, holding the obtained mixture for not less than 2.5 hours, followed by adding to the mixture a solution of mono-substituted potassium phosphate in phosphoric acid to molar ratio of components Zr:Fe:K:PO4=1:3:2:5-8, drying, calcining the obtained polymer gel of zirconyl phosphate at 70-90°C and 300-400°C, respectively, and melting the obtained granules at 980-1000°C.

EFFECT: converting wastes into compact material which is suitable for long-term and safe storage.

3 cl, 2 tbl, 1 ex

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RU 2 522 274 C1

Authors

Travnikov Sergej Sergeevich

Trofimov Trofim Ivanovich

Vinokurov Sergej Evgen'Evich

Samsonov Maksim Dmitrievich

Mjasoedov Aleksandr Borisovich

Kuljako Jurij Mikhajlovich

Perevalov Sergej Anatol'Evich

Malikov Dmitrij Andreevich

Savel'Ev Boris Vital'Evich

Dates

2014-07-10Published

2013-02-26Filed