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- Deville_process abstract "The Deville process was the first industrial process used to produce alumina from bauxite.The Frenchman Henri Sainte-Claire Deville invented the process in 1859. It is sometimes called the Deville-Pechiney process.It is based on the extraction of alumina with sodium carbonate.The first stage is the calcination of the bauxite at 1200°C with sodium carbonate and coke. The alumina is converted in sodium aluminate. Iron oxide remains unchanged and silica forms a polysilicate. In the second stage sodium hydroxide solution is added, which dissolves the sodium aluminate, leaving the impurities as a solid residue. The amount of sodium hydroxide solution needed depends upon the amount of silica present in the raw material. The solution is filtered off; carbon dioxide is bubbled through the solution, causing aluminium hydroxide to precipitate, leaving a solution of sodium carbonate. The latter can be recovered and reused in the first stage.The aluminium hydroxide is calcined to produce alumina.The process was used in France at Salindres until 1923 and in Germany and Great Britain until the outbreak of the Second World War.It has now been replaced by the Bayer process.".
- Deville_process wikiPageExternalLink aluminium_historique.pdf.
- Deville_process wikiPageID "1603285".
- Deville_process wikiPageRevisionID "597017029".
- Deville_process hasPhotoCollection Deville_process.
- Deville_process subject Category:Aluminium.
- Deville_process subject Category:Industrial_processes.
- Deville_process type IndustrialProcess113497928.
- Deville_process type IndustrialProcesses.
- Deville_process type PhysicalEntity100001930.
- Deville_process type Process100029677.
- Deville_process comment "The Deville process was the first industrial process used to produce alumina from bauxite.The Frenchman Henri Sainte-Claire Deville invented the process in 1859. It is sometimes called the Deville-Pechiney process.It is based on the extraction of alumina with sodium carbonate.The first stage is the calcination of the bauxite at 1200°C with sodium carbonate and coke. The alumina is converted in sodium aluminate. Iron oxide remains unchanged and silica forms a polysilicate.".
- Deville_process label "Deville process".
- Deville_process sameAs m.05fxh0.
- Deville_process sameAs Q17009027.
- Deville_process sameAs Q17009027.
- Deville_process sameAs Deville_process.
- Deville_process wasDerivedFrom Deville_process?oldid=597017029.
- Deville_process isPrimaryTopicOf Deville_process.