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calcining furnace [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2012-10-04

English

Subject field(s)
  • Furnaces and Ovens (Metallurgy)
  • Processing of Mineral Products
  • Mineral Processing (Metallurgy)
DEF

A furnace in which ores or metallurgical products are calcined.

OBS

calcination: The operation of heating an ore or a refractory material to a high temperature but without fusing in order to effect useful physical and chemical changes.

OBS

[calcination] differs from roasting because air is not supplied to the charge during heating. The essential difference between calcining and roasting is that roasting involves a chemical reaction between the gas and the solids, but in calcination the surrounding hot gas serves merely to provide the necessary heat.

Key term(s)
  • calcining kiln
  • calcination furnace
  • calcination kiln

French

Domaine(s)
  • Fours (Métallurgie)
  • Préparation des produits miniers
  • Minéralurgie (Métallurgie)

Spanish

Save record 1

Record 2 1996-03-18

English

Subject field(s)
  • Waste Management
  • Nuclear Waste Materials
  • Furnaces and Ovens (Metallurgy)
CONT

Large-scale vitrification plants. ... The continuous/two stage process is represented by AVM, Atelier de vitrification de Marcoule. ... The liquid radioactive waste in nitric acid is fed continuously into a rotary calciner. The solution is dried and the nitrates decomposed at temperatures between 600 and 900°C. The calcine leaving the rotary furnace is mixed with premelted glass frit and introduced into a melting pot.

CONT

The plant at Marcoule consists of a rotary calciner coupled to a melting furnace.

French

Domaine(s)
  • Gestion des déchets
  • Déchets nucléaires
  • Fours (Métallurgie)
CONT

[Procédé AVM]. Le calcinateur est constitué d'un tube de 272 mm de diamètre extérieur, 12 mm d'épaisseur et 3,25 m de long chauffé sur 2,50 m par un four électrique, et de deux embouts d'extrémité porteurs du dispositif d'étanchéité. Ce dispositif est réalisé par des bagues en graphite maintenues appuyées sur des portées stellitées par un ensemble de ressorts et de soufflets.

Spanish

Campo(s) temático(s)
  • Gestión de los desechos
  • Desechos nucleares
  • Hornos (Metalurgia)
Save record 2

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