Method and apparatus for analysis of chemical constituents...

Details Method and apparatus for analysis of chemical constituents... Method and apparatus for analysis of chemical constituents...

C - Chemistry, Metallurgy

25

C

C25C 3/06 (2006.01) G01N 21/65 (2006.01)

Patent

CA 2340441

The present invention relates to a method and an apparatus for the analysis of chemical constituents in an electrolysis cell for production of metal. In particular, the invention relates to continuous analysis of the alumina (oxide) concentration and the cryolite ratio in aluminium producing cells working in accordance with the Hall-Héroult process. The invention involves the use of light spectroscopy such as Raman spectroscopy for the analyses of light emitted from the cell and the light is represented as a spectrum. The analysis is performed directly in the cell while the cell is in its production mode.

Cette invention se rapporte à un procédé et à un appareil d'analyse des constituants chimiques dans une cellule d'électrolyse servant à la production de métal. Cette invention se rapporte en particulier à l'analyse en continu de la concentration d'alumine? ¿(oxyde) et du taux de cryolite dans des cellules de production d'aluminium fonctionnant selon la technique de Hall-Héroult. Cette invention consiste à utiliser une spectroscopie lumineuse, telle que la spectroscopie de Raman, pour l'analyse de l'énergie lumineuse émise par la cellule, cette énergie lumineuse étant représentée sous la forme d'un spectre. Cette analyse est réalisé directement dans la cellule, pendant que celle-ci se trouve en mode de production.

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