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Describe the extraction of 2 metals from including how they were extracted from the ground and how they are used in process plants. What they are used for and how they are used.

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Introduction

Extraction of Metals (1) Describe the extraction of 2 metals from including how they were extracted from the ground and how they are used in process plants. What they are used for and how they are used. (2) How are they extracted? A Metal is chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets. Metals have been used since prehistoric time many primetime iron tools have been execrated. These were probably made from small amounts of native iron found in rocks from meteorites it was not until about 2500BC that iron became more widely used. Metal high in the reactivity series have proved very difficult to isolate. Aluminum the most plentiful reactive metal in the earth curst, was not extracted from its ore until 1827, by Fredrick Wohler, and the extremely reactive metal Rubidium was not isolated until 1861. COPPER How copper is extracted from the ground. Copper is usually known as the red metal after its natural colour. But, it is also known as a green metal for the green patina that it acquires due to weathering. Patinized copper is the architectural focal point of many modern buildings for its natural look. Copper occurs naturally in the environment in a variety of form. ...read more.

Middle

When current is added, copper metal is deposited on the cathodes whilst oxygen and acid is produced at the anodes. After about seven days, the copper plates (now cathodes) are stripped from the steel cathodes and collected in three tonne bundles. These are shipped from the nearest port largely to Australian manufacturers for domestic use. The copper cathodes produced by electro winning contain 99.99% copper that is suitable for electrical uses. Various methods of smelting can be used to convert the concentrates to copper metal. One method is to melt them with fluxes in a smelter furnace to produce copper matte, which is a mixture mainly of iron and copper sulphides usually containing 50% to 70% Cu. The molten matte is poured into a converter which contains more fluxes and converted into blister copper This is about 99% pure. The blister copper is further refined in an anode furnace and finally electrolytically refined to pure cathode copper. Uses of Copper and the Properties Properties of copper Copper is 1) An excellent conductor of electricity and heat. 2) Soft, easily bent and shaped. 3) Resistant to corrosion (very unreactive). Uses 1. Used for electrical wiring. 2. Copper cookware which is not common. 3. Gas pipes. 4. Water pipes. 5. It's mixed with other metals to form alloys. Aluminium How Aluminium is extracted from the ground? ...read more.

Conclusion

The thin oxide layer will react with an acid or alkali to form the corresponding aluminum salt + water. The exposed aluminum metal will then further react with acid or alkali to form the aluminum salt + hydrogen. For this reason, aluminum cookware should not be allowed to come into prolonged contact with citrus fruits or vinegar (acids), or alkali cleaners such as caustic soda (sodium hydroxide). Properties and uses of Aluminium Properties 1) is strong and has a low density. 2) is resistant to corrosion, and can be easily bent and shaped. 3) Is a good conductor of heat and electricity. 4) Can be polished to achieve a highly reflective surface. Uses (1) Low density and strength which make it ideal for construction of aircraft, lightweight vehicles, and ladders. An alloy of aluminium called Duralumin is often used instead of pure aluminium because of its improved properties (2) Easy to shape and corrosion resistance make it a good material for drink cans and roofing materials. 3) Low density makes it useable for greenhouses and window frames. 4) Good conduction of heat makes it useable for boilers, cookers and cookware. 5) Good conduction of electricity makes it use for overhead power cables hung from pylons (low density gives it an advantage over copper). 6) High reflectivity makes it perfect for mirrors, reflectors and heat resistant clothing for fire fighting. ...read more.

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