Roasted copper pyrite on smelting with sand p | vedclass

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Question

(A) Roasted copper pyrite on smelting with sand produces $FeSiO_{3}$ as fusible slag and $Cu_{2}S$ as matte.For removing the gangue, silica $(SiO_{2})

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$FeSiO_{3}$ as fusible slag and $Cu_{2}S$ as matte

Vedclass · Answer

(A) Roasted copper pyrite on smelting with sand produces $FeSiO_{3}$ as fusible slag and $Cu_{2}S$ as matte.For removing the gangue, silica $(SiO_{2})$ is added as a flux to react with iron oxide $(FeO)$ formed during the roasting process to form iron silicate $(FeSiO_{3})$ slag.The chemical reactions are:$2FeS + 3O_{2} \longrightarrow 2FeO + 2SO_{2}$$FeO + SiO_{2} \longrightarrow FeSiO_{3}$Copper matte mainly consists of a mixture of $Cu_{2}S$ and $FeS$.

Roasted copper pyrite on smelting with sand produces

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