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Roasted copper pyrite on smelting with sand produces
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$\mathrm{FeSiO}_{3}$ as fusible slag and $\mathrm{Cu}_{2} \mathrm{S}$ as matte
Roasted copper pyrite on smelting with sand produces $\mathrm{FeSiO}_{3}$ as fusible slag and $\mathrm{Cu}_{2}$ S as matte
For removing the gangue, FeS, silica present in the lining of the Bessemer converter, acts as a flux and forms slag (iron silicate) on reaction with FeO.
$\mathrm{FeS}+3 \mathrm{O}_{2} \longrightarrow 2 \mathrm{FeO}+2 \mathrm{SO}_{2}$
$\mathrm{FeO}+\mathrm{SiO}_{2} \longrightarrow \mathrm{FeSiO}_{3}$
Copper matte mainly contains $\mathrm{Cu}_{2} \mathrm{S}$ and FeS.
For removing the gangue, FeS, silica present in the lining of the Bessemer converter, acts as a flux and forms slag (iron silicate) on reaction with FeO.
$\mathrm{FeS}+3 \mathrm{O}_{2} \longrightarrow 2 \mathrm{FeO}+2 \mathrm{SO}_{2}$
$\mathrm{FeO}+\mathrm{SiO}_{2} \longrightarrow \mathrm{FeSiO}_{3}$
Copper matte mainly contains $\mathrm{Cu}_{2} \mathrm{S}$ and FeS.
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