An ore is any naturallyoccurring source of a metal that you can economically extract the metal from. Aluminium, for example, is the most common metal in the Earth's crust, occurring in all sorts of minerals.
Metals have been used widely by man since ancient time. In past, these metals were used for cooking, farming tools, weapons like bow, arrows, swords and also in locomotive wagons, but with development in technology, the use of metals has widened distinctly. Currently, almost any object we .
To become useful, the metals have to be extracted from whatever they are mixed with. A metal ore is a rock containing a metal, or a metal compound, in high enough concentration to make it economic to extract the metal. Ores are mined. They may need to be concentrated before the .
used for the extraction of some metals from their ore. See for example lead bromide, magnesium chloride, potassium chloride, sodium chloride and zinc chloride. The situation is more complicated when the substance ... Electrolysis can also be used for metal plating.
PowerPoint presentation for GCSE Chemistry on metals. Including ores, reactivity, extracting iron, steel and alloys.
extraction of metals introduction chemguide. This page looks at the various factors which influence the choice of method for extracting metals from their ores, including reduction by carbon, reduction by a reactive metal (like sodium or magnesium), and by electrolysis
(a) ores of both zinc and mercury are sulphide ores. explain the methods used to extract these metals from their ores (b) can we store concentrated solution of sodium hydroxide in a zinc container?explain
Journal of Powder Metallurgy Mining an academic journal provides an opportunity to share the information among the medical scientists and researchers. ... Metallurgical Engineering is the science that deals with procedures used in extracting metals from their ores, ...
A similar method using bacteria has also been developed bioleaching. Issues surrounding the extraction of the metals from their ores are the use of energy and the production of carbon dioxide during the processing. In the blast furnace, there is a lot of CO2 produced, since carbon is .
Jan 08, 2012· P1 Describe the use of carbon in the extraction of some metals from their ores. In case of iron, the oxides are reduced by reaction with Carbon and/or Carbon Monoxide. P2 Describe the essential reactions in the extraction of iron in the blast furnace. Coke (Carbon), Haematite (Iron II Oxide), and Limestone (Calcium Carbonate) is needed.
metals are extracted from their ores according to their reactivity series. firstly, metals that are more reactive that carbon are extracted by electrolysis whic is breaking t . he compounds down using electricity. secondly, metals that are less reactive than carbon are extracted by reduction in which carbon is added to the metal ore, carbon react with oxygen and the metal remain by itself pure.
Economic Impact of Metal Extraction. Now, the methods of extracting metal do not come cheap, nor does refining and purifying metal. Not only will you need special equipment for their extraction, but you will also need other elements as well such as copper, zinc, mercury, among others, for the purification and refinement processes.
When a metal ore is an ionic compound of that metal and a nonmetal, the ore must usually be smelted (or heated with a reducing agent) to extract the pure metal. Many common metals, such as iron, are smelted using carbon as a reducing agent.
Cyanidation A method of extracting exposed gold or silver grains from crushed or ground ore by dissolving it in a weak cyanide solution. May be carried out in tanks inside a mill or in heaps of ore out of doors. Cyanide A chemical species containing carbon and nitrogen used to .
Extracting Surface Minerals. The size of the ore bed increases as mining continues, and eventually, the pit becomes a very large bowlshaped hole in the earth's surface. When the ore is found in a wide area but it's not very deep in the ground, strip mining is used.
The process used to convert a metal ore into a native metal is ... Using Carbon to Extract Metals Related Study ... video lessons have helped over 500,000 teachers engage their students ...
GCSE Science: chemistry Methods of extracting metals. The method used to extract metals from the ore depends on their reactivity. Thus the method of extraction of a metal from its ore depends on the metal's position in ... calcium magnesium aluminium, <— extract by electrolysis. carbon.
