Feed-to-glass conversion during low activity waste vitrification

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985891%3A_____%2F20%3A00533117" target="_blank" >RIV/67985891:_____/20:00533117 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22310/20:43921260

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0272884219337587?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0272884219337587?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ceramint.2019.12.256" target="_blank" >10.1016/j.ceramint.2019.12.256</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Feed-to-glass conversion during low activity waste vitrification

Popis výsledku v původním jazyce

The thermal history of the nuclear waste feed during melting has a strong effect on the rate of melting, thus strongly affecting the efficiency of the nuclear waste cleanup. Based on our previous work that addressed the high-level waste (HLW) cold-cap formation and structure, we studied the feed-to-glass conversion of low-activity waste (LAW) slurry, which has significantly different chemical composition and resultant physicochemical properties. To simulate the conditions during feed-to-glass conversion, samples were prepared by rapid water evaporation from the LAW slurry. The resulting cold-cap was more porous than a typical HLW cold-cap, and its heat conductivity was shown to be significantly lower. In addition, the presence of salts in the LAW, such as borax decahydrate, distinctly affected the slurry properties during boiling, possibly helping the LAW slurry spread across the melter and preventing build-ups of cold-cap leading to feeding interruptions.

Název v anglickém jazyce

Feed-to-glass conversion during low activity waste vitrification

Popis výsledku anglicky

The thermal history of the nuclear waste feed during melting has a strong effect on the rate of melting, thus strongly affecting the efficiency of the nuclear waste cleanup. Based on our previous work that addressed the high-level waste (HLW) cold-cap formation and structure, we studied the feed-to-glass conversion of low-activity waste (LAW) slurry, which has significantly different chemical composition and resultant physicochemical properties. To simulate the conditions during feed-to-glass conversion, samples were prepared by rapid water evaporation from the LAW slurry. The resulting cold-cap was more porous than a typical HLW cold-cap, and its heat conductivity was shown to be significantly lower. In addition, the presence of salts in the LAW, such as borax decahydrate, distinctly affected the slurry properties during boiling, possibly helping the LAW slurry spread across the melter and preventing build-ups of cold-cap leading to feeding interruptions.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20504 - Ceramics

Projekt

<a href="/cs/project/LTAUSA18075" target="_blank" >LTAUSA18075: Analýza pěnění – kritického procesu při přeměně kmene na sklo</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Ceramics International

ISSN

0272-8842

e-ISSN

—

Svazek periodika

46

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

9826-9833

Kód UT WoS článku

000528340500159

EID výsledku v databázi Scopus

2-s2.0-85077338961