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FAQ about aluminium


Question: How much “less” does aluminium weigh as compared to steel?

Answer: The density of aluminium is 2,7g/cm3, which corresponds to about one third of the density of steel.

Question: Is it possible to weld aluminium?

Answer: Most of the alloys used for the production of profiles are perfectly suitable for welding. The MIG and TIG methods are the most common ones.

Question: Does bauxite mining cause rain forest devastation?

Answer: A total area of 16 km2 per year is claimed for bauxite mining, of which a little more than 10% is rain forest.

An area of 170,000 – 200,000 km2 of rain forest is cut down each year (timber production and new arable land). 16 / 170,000 = 0.001% of the cutting down of rain forest is caused by bauxite mining.

Question:  Can aluminium cause the Alzheimer’s disease?

Answer: The researchers are fully in agreement that aluminium does not cause the Alzheimer’s disease.

Question: Is aluminium contained in cooking utensils toxic?

Answer: The Swedish National Food Administration has found out that we consume 12 mg of aluminium every day, of which 0.3 mg come from cooking utensils.

Aluminium occurs naturally in certain foods, such as milk, lettuce, berries, meat, water, … A harmful dose is approx. 14,000 mg/day. It corresponds to 90,000 litres of mil or 2.5 tons of lettuce or 1.5 tons of berries or 3 tons of meat or…

Question: Aluminium is available in large quantities, which can hardly motivate people to recycle it?

Answer: The environmental benefit of aluminium recycling lies mainly in the large energy savings. When remelting aluminium, only five per cent of the energy required for the production of the new (primary) metal is used.

If the sorting process is carried out properly, recycling can be repeated any number of times without a quality deterioration. This is what we call absolute recycling.

Question: If we banned the use of aluminium cans in Sweden, we could close down one nuclear power station!

Answer: In 1986 the companies KUBAL (this is the present name of the company) and PLM together used for the production of cans 0.048 TWh of energy or 0.036% of Sweden’s total electricity generation. This corresponds to less than one day’s generation of a nuclear power station the size of Forsmark in Sweden.