· Ores are naturally occurring rocks that contain metal or metal compounds in sufficient amounts to make it worthwhile extracting them. For example, iron ore is used to make iron and steel. Here, we providing a List of some Important metals and their ores. it is mainly useful for your upcoming competitive exams like SSC, UPSC etc.

 · It is easier to do extraction of metals or obtain metal from its oxide, as compared to its sulfides and carbonates. Therefore, prior to reduction, the metal sulfides and carbonates must be converted into metal oxides. The sulfide ores are converted into oxides by heating strongly in the presence of excess air. This process is known as roasting.

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At metal mines, the target ore (like gold, silver, copper, etc) is often rich in sulfide minerals. When the mining process exposes the sulfides to water and air, together they react to form sulfuric acid. This acid can dissolve other harmful metals and metalloids (like .

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 · Extraction of Metals: The purpose of Isolation of Elements in Chemistry Class 12 is to teach students about different methods of extracting metals from a few metals, such as noble metals such as gold, silver, and platinum, are found in their natural metallic forms. Metallurgy is the branch of science that deals with extracting metals from ores that are .

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The Earth's supply of metal ores. is limited. For example, highgrade copper ores are becoming harder to find and mine. ... reduces the need to obtain new .

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According to the revenues in the year 2013, BHP Billiton is the world's largest mining company and Australia's largest company. They specialize in mining, processing and oil and gas production at sites in over 25 countries, such as Canada, Chile, Peru and many more. Their main products happen to be coal, copper, iron ore, petroleum and potash.