E - Aluminium Articles

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Economic use of aluminium: LME: Hedging on the LME

Hedging is the process by which a future commitment in physical metal is covered by establishing the opposite position for the same quantity on the same date on a futures market. Losses on the one side are more or less balanced out by gains on the other. It is merely a case of wanting to safeguard a price. However, it is usually not possible for

Ecology and the environment: Aluminium - a sustainable material

The term sustainable was first used in a report from the United Nations World Commission on Environment and Development titled Our Common Future, which was published in 1987. In this report, sustainable development is defined as follows: ‘Sustainable development is development that meets the needs of the present without compromising the ability of

Economic use of aluminium: LME: Funds and speculators

Speculators are also active on the LME. Their presence is not negative, however, because together with funds they play an important role on the exchange (LME). They help ensure that the futures market functions by providing liquidity. At times of excess supply, they purchase in anticipation of higher prices at a later date. During periods of

Electroplating

Electroplating is the term used to describe an electrolytic process in which metals are deposited out of solution onto the surface of a component. General principle The object to be plated is immersed in an electrolytic bath which usually consists of an aqueous metal-salt solution. The deposition of the dissolved metals in the solution onto the

Environmental protection in the aluminium industry

The aluminium industry supports the objectives of sustainable development. The use of aluminium helps satisfy people’s basic needs but also offers some benefits from an ecological point of view: firstly, it preserves the environment by rehabilitating bauxite mines and via recycling; secondly, it uses fossil fuels sparingly because the aluminium

Ecology and the environment: Aluminium recycling

The fact that aluminium can be recycled any number of times and practically without any loss in value is without doubt the main ecological argument for using it. The recycling of used products requires only 5% of the energy needed to produce the same quantity of primary aluminium. Not only does this conserve raw materials (in particular bauxite),

Emal and Gasco open pipeline to supply world's largest single site aluminium smelter with clean, reliable energy

Emirates Aluminium (EMAL) and GASCO have opened a natural gas pipeline that will enable onsite power production at the world’s largest single site aluminium smelter. The pipeline, directly connected to the EMAL power plant, will provide EMAL with a reliable and uninterrupted supply of natural gas. In turn, the gas will be used to supply power for

Extraction of the ore

Aluminium only occurs in nature in combination with other elements. The raw material potential is well-nigh inexhaustible (8% of the Earth’s crust consists of aluminium), although until now bauxite has been used almost exclusively as the raw material. Bauxites form as a result of weathering of their aluminium and silicon containing mother rocks.