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Investigation of silver behavior in the glass melt and its effect on the IMCC conditions in an industrial-scale furnace during vitrification of HLLW simulants

Published online by Cambridge University Press:  02 March 2020

A. Yu. Abashkin ,
I. N. Skrigan ,
E. Yu. Ivanov ,
A. O. Pleshakov ,
D.B. Lopukh ,
A.V. Vavilov  and
A. P. Martynov
A. Yu. Abashkin
Affiliation:
Khlopin Radium Institute, 2-i Murinskii av. 28, St. Petersburg, 194021 Russia
I. N. Skrigan*
Affiliation:
Khlopin Radium Institute, 2-i Murinskii av. 28, St. Petersburg, 194021 Russia Saint Petersburg Electrotechnical University «LETI», Prof. Popova st. 5, St. Petersburg, 197376 Russian
E. Yu. Ivanov
Affiliation:
Khlopin Radium Institute, 2-i Murinskii av. 28, St. Petersburg, 194021 Russia
A. O. Pleshakov
Affiliation:
Khlopin Radium Institute, 2-i Murinskii av. 28, St. Petersburg, 194021 Russia
D.B. Lopukh
Affiliation:
Saint Petersburg Electrotechnical University «LETI», Prof. Popova st. 5, St. Petersburg, 197376 Russian
A.V. Vavilov
Affiliation:
Saint Petersburg Electrotechnical University «LETI», Prof. Popova st. 5, St. Petersburg, 197376 Russian
A. P. Martynov
Affiliation:
Saint Petersburg Electrotechnical University «LETI», Prof. Popova st. 5, St. Petersburg, 197376 Russian
*
*(Email: ilya.skrigan@yandex.ru)
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Abstract

The large-scale cold crucible induction melter (CCIM) with productivity of 12 kg/h was created for melting borosilicate glass containing 20 mass. % of high-level liquid wastes (HLLW) simulators. Tests were carried out to study the effect on the CCIM operating parameters during sedimentation of metallic silver, at the content of 3.8 mass. % Ag2O in glass. Post-test analyses of the glass shows the sedimentation of silver in the bottom layers of the molten pool. Experiments have confirmed that the presence of noble metals in the form of undissolved sediments in the bottom layers of furnace leads to a changes in the properties of the melt, the aggravation of its drain conditions, an increase in the thermal conductivity of the skull and heat losses during melting.

Type
Articles
Information
MRS Advances , Volume 5 , Issue 1-2: Scientific Basis for Nuclear Waste Management XLIII , 2020 , pp. 83 - 92
Copyright
Copyright © Materials Research Society 2020

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References

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