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- Preferred Labelskos:prefLabel
Bayer process
- URI
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- Within Vocab
- Processing Activity
| Preferred Labelskos:prefLabel | Bayer process |
|---|---|
| Definitionskos:definition | The Bayer process is the principal industrial means of refining bauxite to produce alumina (aluminium oxide). In the Bayer process, bauxite ore is heated in a pressure vessel along with a sodium hydroxide solution (caustic soda) at a temperature of 150 to 200 °C. At these temperatures, the aluminium is dissolved as sodium aluminate (primarily [Al(OH)4]−) in an extraction process. After separation of the residue by filtering, gibbsite is precipitated when the liquid is cooled and then seeded with fine-grained aluminum hydroxide crystals from previous extractions. |
| Broaderbroader |
leaching
|
| See AlsoseeAlso | Processing Activity |
| Notationnotation | 03.02.1 |
| Is Defined ByisDefinedBy | Processing Activity |