Explain the process of obtaining 'blister copper' from copper matte'' with equations.

Explanation

Copper matte is charged in to Silica lined convertor. Some silica is also added and hot air blast is blown to convert remaining `FeS, FeO & Cu_(2)S//Cu_(2)O` to metalic copper.
`2FeS+3O_(2)rarr 2FeO+2SO_(2)`
`FeO+SiO_(2)rarr FeSiO_(3)`
`2Cu_(2)S+3O_(2)rarr2Cu_(2)O+2SO_(2)`
`2Cu_(2)O+Cu_(2)Srarr 6Cu+SO_(2)`
The solidified copper obtained has blistered appearance due to the evolution of `SO_(2)`.