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Metal Extraction Concepts Key Concepts. The Earth''s crust contains many different rocks. Rocks are mixtures of minerals. A mineral can be either an element or a compound. A metal ore is a mixture of minerals containing the metal, and other materials in the rock, from which it is economically viable to extract the metal.

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20/01/1987· A process for the direct recovery of tin, as an organo hydrocarbyl tin compound, from reduced but unrefined tin ores and ore slags is described, wherein the ore is reacted directly with a hydrocarbyl

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Overview.iq

EX.Lec.2 Extraction of zinc from ore sulphide Dr. Ahmed Ameed 2 1) Pyrometallurgical treatment Stage 1 The zinc blende (sphalerite: zinc sulphide) is first crushed to powder, wet grinding and then treated by froth flotation (that process is .

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To be 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 a high enough concentration to make it economic to extract the metal. The method used to extract metals from the ore in which they are found depends on their reactivity.

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Zinc is extracted from its ore by calcination to remove the sulphur converting zinc to an oxide. The next step is to smelt the particular oxide with carbon where it is combined with oxygen to form a gas. Finally, the deoxidised metal distils in vapour and is then precipitated again into the solid form after extraction

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