6.21 Why copper matte is put in silica lined converter?

Copper matte contains Cu₂S and FeS. When a blast of hot air is passed through molten matte took in a silica lined convertor, FeS present in matte is oxidized to FeO which combines with Silica (SiO₂) to form FeSiO₃, slag.

When the whole of iron has been removed as slag, some of the Cu₂S undergoes oxidation to form Cu₂O which then reacts with more Cu₂O to form copper metal.

<p>Copper matte contains Cu₂S and FeS. When a blast of hot air is passed through molten matte took in a silica lined convertor, FeS present in matte is oxidized to FeO which combines with Silica (SiO₂) to form FeSiO₃, slag.</p><div><div><picture><source srcset="https://images.shiksha.com/mediadata/images/articles/1687931879phpIddjE7_480x360.jpeg" media=" (max-width: 500px)"><img src="https://images.shiksha.com/mediadata/images/articles/1687931879phpIddjE7.jpeg" alt="" width="288" height="77"></picture></div></div><p>When the whole of iron has been removed as slag, some of the Cu₂S undergoes oxidation to form Cu₂O which then reacts with more Cu₂O to form copper metal.</p><div><div><picture><source srcset="https://images.shiksha.com/mediadata/images/articles/1687931900phpCoP2v0_480x360.jpeg" media=" (max-width: 500px)"><img src="https://images.shiksha.com/mediadata/images/articles/1687931900phpCoP2v0.jpeg" alt="" width="302" height="59"></picture></div></div>

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