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Roasting is carried out in extraction of metal in how many ores/minerals? Chalcopyrite, magnetite, Cassiterite containing impurity of pyrites of Fe and Cu, Galena, Zinc blende, Siderite, |
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Answer» Correct Answer - 6 `CuFeS_(2)+O_(2)rarrCu_(2)S+FeO +SO_(2)uarr` `[Fe_(3)O_(4)+O_(4)rarrFe_(2)O_(3)`, `FeCO_(3)+O_(2)rarrFe_(2)O_(3)+CO_(2)]` `FeO` conversion into `Fe_(2)O_(3)` to prevent losss of iron in form of slag `(FeSiO_(3))` `SnO_(2)+O_(2)rarr` No reaction `{:(FeS),(Cu_(2)S):}}+O_(2)rarr "sulphate, removed by treating with hot" H_(2)O` `Pbs + O_(2)rarrPbO+SO_(2)` `ZnS+O_(2)rarrZnO+SO_(2)` |
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