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MYTILINEOS GROUP
SUSTAINABILITY REPORT 2011
78
Alumina
Alumina is the industrial product derived from bauxite ore and is used to produce primary cast aluminium as well as other metallurgical products. Alumina may
be hydrated or calcined (anhydrous), depending on the degree to which it has been processed. Calcined alumina, also known as metallurgical grade alumina, is
obtained by baking hydrated alumina in order to remove the quantities of water contained in it.
Production Chart – Alumina
Life cycle stages in which health and safety impacts of products are assessed for improvement
YES
NO
Product concept development
x
Research & Development
x
Certification
x
Manufacturing and production
x
Marketing & promotion
x
Storage, distribution and supply
x
Use and maintenance
x
Rejection, reuse or recycling
x
Percentage of significant products categories subject to assessment for compliance with the above procedures
Percentage
Alumina
100%
Aluminium
100%
Market
Product Health & Safety specifications
ALUMINIUM S.A. is committed to ensuring the ongoing satisfaction of the needs and expectations of its clients, by providing them with products (alumina and
primary cast aluminium) and associated services that meet strict quality requirements. To this end, the Company takes the necessary steps to obtain the ISO
9002 Quality Certificate, while its quality control laboratory has been accredited by Hellenic Accreditation System S.A. (ESYD S.A.) in accordance with the
requirements of the ISO 17025:2005 International Standard, for the chemical analysis of bauxite, alumina (both hydrated and calcined), and aluminium and its
alloys. This accreditation concerns the Quality Management System of the Laboratory and the technical skills and adequacy of the Laboratory for carrying out
tests in the areas for which it has been accredited.
BAUXITE
STOCK
CRUSHING
GRINDING
STEAM
SETTLING AND
MUD WASHING
PRECIPITATION
HYDRATE FILTRATION
CALCINATION
HYDRATE ALUMINA STOCK
CALCINED ALUMINA STOCK
RED MUD FILTRATION
DIGESTION
BAUXITE RESIDUE
COGENERATION
PLANT
