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Describe the role of the following :(i) SiO2 in the extraction of copper from copper matte.(ii) NaCN in froth floatation process. |
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Answer» (i) It acts as flux to removiron oxide as silicate (slag). FeO + SiO2 → FeSiO3 (Slag) (ii) NaCN acts as the depressant. It selectively prevents ZnS from coming to the froth but allows pbs to came with the froth. |
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