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Title: Calcination process for radioactive wastes

Abstract

The present invention provides a method for minimizing the volatilization of chlorides during solidification in a fluidized-bed calciner of liquids containing sodium, nitrate and chloride ions. Zirconium and fluoride are introduced into the liquid, and one-half mole of calcium nitrate is added per mole of fluoride present in the liquid mixture. The mixture is calcined in the fluidized-bed calciner at about 500.degree.C., producing a high bulk density calcine product containing the chloride, thus tying up the chloride in the solid product and minimizing chloride volatilization.

Inventors:
 [1]
  1. Kennewick, WA
Issue Date:
OSTI Identifier:
862520
Patent Number(s):
3954661
Application Number:
05/504,789
Assignee:
United States of America as represented by United States Energy (Washington, DC)
Patent Classifications (CPCs):
G - PHYSICS G21 - NUCLEAR PHYSICS G21F - PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
calcination; process; radioactive; wastes; provides; method; minimizing; volatilization; chlorides; solidification; fluidized-bed; calciner; liquids; containing; sodium; nitrate; chloride; zirconium; fluoride; introduced; liquid; one-half; mole; calcium; added; mixture; calcined; 500; degree; producing; bulk; density; calcine; product; tying; solid; liquid mixture; liquids containing; bulk density; radioactive waste; radioactive wastes; solid product; product containing; containing sodium; fluidized-bed calciner; calcium nitrate; duct containing; /588/976/

Citation Formats

Kilian, Douglas C. Calcination process for radioactive wastes. United States: N. p., 1976. Web.
Kilian, Douglas C. Calcination process for radioactive wastes. United States.
Kilian, Douglas C. Tue . "Calcination process for radioactive wastes". United States. https://www.osti.gov/servlets/purl/862520.
@article{osti_862520,
title = {Calcination process for radioactive wastes},
author = {Kilian, Douglas C},
abstractNote = {The present invention provides a method for minimizing the volatilization of chlorides during solidification in a fluidized-bed calciner of liquids containing sodium, nitrate and chloride ions. Zirconium and fluoride are introduced into the liquid, and one-half mole of calcium nitrate is added per mole of fluoride present in the liquid mixture. The mixture is calcined in the fluidized-bed calciner at about 500.degree.C., producing a high bulk density calcine product containing the chloride, thus tying up the chloride in the solid product and minimizing chloride volatilization.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1976},
month = {5}
}

Patent:

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