Located in Jonquière, Saguenay, Vaudreuil refinery transforms bauxite into alumina via the “Bayer” process. The Vaudreuil site is the largest centre of inorganic chemistry in Canada. The bauxite Vaudreuil uses comes from several countries including Brazil, Guinea and Ghana. It was commissioned in 1936 and is one of the last alumina refineries to operate without being located near a bauxite mine. Vaudreuil refinery produces 1 500 000 tonnes of alumina and specialty products (hydrates, aluminium fluoride) per year. It supplies the majority of our smelter’s need in the region, which is converted into primary aluminium in the Saguenay – Lac-Saint-Jean smelters. Vaudreuil is one of the best refinery in the world in terms of greenhouse gases emissions and in terms of energy efficiency.

The site also produces specialty hydrate, which is used in a range of ways including to make ceramics, refractories, abrasives, tiles and linings, specialty glass, solid-surface products, and chemical products used in water treatment.

In addition, Vaudreuil Works provides auxiliary services such as compressed air and steam to the Jonquière complex, and maintains a fluoride plant (the only one in North America).

More than 500 employees (excluding contractors) work at Vaudreuil, the only alumina refinery in Canada.

Sustainable development

In terms of greenhouse gas emissions, Vaudreuil is recognised as being one of the best plants in the world, and the second most energy efficient.