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Aluminium is used as an important building material, especially in advanced countries. The following are the important properties of aluminium that make it useful as a building material: Duralumin is one of the most important alloys most extensively used in the aircraft industry, containing the following percentage of alloying metals, copper – 4.0 per cent, […]
This metal is mainly used for making parts of aeroplanes, utensils, electric wires, window frames, door frames, corrugated sheets, structural members, foils, posts, panels, etc. Other uses of aluminium are as follows. After 1950s, this material has been tried for structural members. Its use as a structural material is, therefore, very recent. But it has […]
Aluminium is extracted from bauxite in two stages: 9.1.1 Purification of the ore to produce alumina (Al2O3) The first process is called Bayer process, in which the alumina in the bauxite is dissolved in a solution of caustic soda, filtered and reprecipitated to obtain aluminium hydroxide and calcinated to form pure Al2O3. 9.1.2 Reduction of […]