Aluminiumoxid

Guichon fertigt Sonderarmaturen zur Herstellung von Aluminiumoxid

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FAQ

FAQ - Aluminiumoxid

Aluminiumoxid – Anwendungen von Aluminiumoxid :

– The main outlet for the production of alumina is aluminum (more than 93% of the use of alumina in the world). Its properties are stability, purity, refractoriness, chemical inertness and its abundance and variety of its forms
– New uses of alumina enrich each year as technology innovations, the list of applications of this material is found in many objects of our everyday environment.

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Aluminiumoxid – Herstellungsprozess von Aluminiumoxid :

Alumina, synthetically produced aluminum oxide (Al2O3), is a white crystalline substance that is used as a starting material for the production of aluminum metal. The world-wide production is close to 90 million tons of alumina per year.

The Bayer process is the principal industrial means of refining bauxite to produce alumina. In the Bayer process, bauxite ore (containing 30–55% Al2O3), is digested by washing with a hot solution of sodium hydroxide at 175°C. The slurry is then filtered and sent to a rotary kiln calciner to dry and, under very high temperature (1000°C), is transformed into the fine, white powder known as alumina. A large amount of the aluminum oxide so produced is then subsequently smelted in the electrolytic process in order to produce aluminum.

Example of Alumina manufacturing process

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Aluminiumoxid – Empfohlene Ventile :

Guichon Valves offers specially designed valves suited for this kind of severely erosive slurry and abrasive application.
Internal lining, stem protection, wear-resistant stellited materials can be speciï¬

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