Guichon manufactures valves specially adapted to the production of alumina :

Tank Bottom Valve, Plug Valve

Tank bottom valve
Type : 602M

DN 3/4" to 16" PN 10 to 150
– Cast construction
– Carbon steel, Stainless steel
Tank bottom valve
Type : 607M

DN 3/4" to 14" PN 10 to 150
– Cast construction
– Carbon steel, Stainless steel


  • Construction materials: Carbon Steel (CS), Stainless Steel (SS)
  • Construction methods: Fabricated (Welded), Cast


  • Service conditions: Abrasion, Corrosion
  • Types of fluids: Liquids, Powder

FAQ - Alumina

Alumina – Uses of Alumina :

– The main raw material for the production of aluminum
– Manufacture of refractory and ceramic

Posted in: FAQ - Alumina

Alumina – Manufacturing process of Alumina :

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

Posted in: FAQ - Alumina

Alumina – Recommended valves :

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 specified, depending on the type of the valve (seat, ball) and the customer’s needs.

Posted in: FAQ - Alumina