Production of aluminium oxide and aluminium hydroxide using the Bayer process in Stade.

Aluminium Oxid Stade GmbH

Stade-Bützfleth (DE)New on Amplifa

1973Founded

544Employees (including 65 apprentices)

1,05 Mio. t/JahrAluminium oxide capacity

55 haCompany site

19 JahreØ Length of service

About AOS

Aluminium Oxid Stade GmbH (AOS) produces aluminium oxide and aluminium hydroxide from bauxite at the Stade-Bützfleth site using the Bayer process. Production has been running 24/7 since 1973 on a 55-hectare company site. With an annual capacity of 1.05 million tonnes of aluminium oxide, the company ranks among the established producers in Europe. The 544 employees, including 65 apprentices, have an average length of service of 19 years. The products are used, among other things, in the metal, ceramic, refractory, glass, zeolite and detergent industries as well as in water treatment, petrochemicals and catalyst manufacturing. In addition, AOS offers calcination of aluminium oxide up to 1400 °C as well as grinding and sieving processes.

Site: Stade-Bützfleth
Processes: Production of aluminium oxide and aluminium hydroxide using the Bayer process, Calcination of aluminium oxide (SO143) up to 1400 °C, optionally grinding or sieving, Grinding of SH20 to a finer grain distribution (flame retardant/additive), Calcination up to 1400 °C, Grinding, Sieving, 24/7 production
Materials: Bauxite, Aluminium oxide (product SO143), Aluminium hydroxide wet, Aluminium hydroxide dry, Aluminium oxide, Bayer process, Calcination up to 1400 °C
Founded: 1973
Employees: 544
Industries: Metal industry, Ceramics industry, Refractory industry, Abrasives industry, Glass industry, Water treatment

01
Bauxite input
02
Digestion using the Bayer process
03
Production of aluminium hydroxide (SH10 wet, SH20 dry)
04
Calcination to aluminium oxide (SO143) up to 1400 °C
05
Grinding and sieving
06
Loading and worldwide shipping

Products & Processes

SO143

Aluminium oxide

Calcined aluminium oxide for primary aluminium, ceramics, refractory, abrasives and glass.

SH10

Aluminium hydroxide wet

Use in water treatment, aluminium salts and the zeolite industry.

SH20

Aluminium hydroxide dry

Flame retardants, TiO2 stabilization, molecular sieves and catalyst carriers.

Bayer

Bayer process

Chemical digestion of bauxite to obtain aluminium hydroxide and aluminium oxide.

Kalzinierung

Calcination up to 1400 °C

Thermal post-treatment of SO143 for use in the ceramics industry.

Site

Stade-Bützfleth

Production

Lot size: 24/7 continuous operation
Materials: Bauxite, aluminium oxide SO143, aluminium hydroxide SH10/SH20

Bayer process plant
Calcination furnace up to 1400 °C
Grinding facilities
Sieving facilities

Industries

Metal industryCeramics industryRefractory industryAbrasives industryGlass industryWater treatmentZeolite industryConstruction industryDetergent industryPetrochemicalsTiO2 industryCatalyst manufacturing

Processes & technical limits

Processes	Tolerance	Max. part	Weight	Lot size	Materials
Production of aluminium oxide and aluminium hydroxide using the Bayer processOther (chemical production)	–	–	1.050.000 t aluminium oxide per year	–	Bauxite, Aluminium oxide, Aluminium hydroxide
Calcination of aluminium oxide (SO143) up to 1400 °C, optionally grinding or sievingOther (thermal treatment)	–	–	–	–	Aluminium oxide
Grinding of SH20 to a finer grain distribution (flame retardant/additive)Other (processing)	–	–	–	–	Aluminium hydroxide

Additional services

Production of aluminium oxide and aluminium hydroxide using the Bayer processCalcination up to 1400 °CGrindingSieving24/7 production

History

1973
Start of 24/7 production in Stade-Bützfleth