Our value chain

Primary aluminium production

Bauxite is extracted from mines and refined into pure aluminium oxide, called alumina. Molten aluminium is extracted from the alumina through an electrolytic process called smelting. Gränges buys primary aluminium from commodity traders and directly from smelters.

Re-melting and casting, rolling and slitting

Gränges creates customized alloys by adding other metals in the re-melting process. The alloys are solidified into slabs or coils in the casting process, and transformed into coils and sheets in the rolling and slitting process.

Product manufacturing

Gränges’ customers produce a range of products including automotive heat exchangers, battery component, HVAC (heating, ventilation and air conditioning) products and specialty packaging.

Product use

Key uses include vehicles, batteries, systems for heating, ventilation and air-conditioning in buildings, specialty packaging, as well as aluminium foil in food packaging.

Aluminium recycling

Recycled aluminium is collected and sorted. Gränges strives to recirculate all scrap from its own production process. In addition, Gränges buys recycled aluminium from customers and recycling companies as well as scrap from end-of-life products.