mention the difference between calcination and roasting how are these processes used in the extraction of zinc? explain with the help of chemical equations.after these processes,is reduction necessary to obtain zinc?why?
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while calcuination is mostly used in the oxidation of carbonates ,roasting is a method that is used for converting sulphide ores .during roasting , moisture and non-metallic impurities in the form of volatile gases are released an (ex): of roasting is when zinc sulphide is converted into zinc oxide
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