During converting copper matte which mainly contains copper sulphide, why side blown coverter is used? Can we use bottom blown converter ? Please explain

A bottom blown converter is not suitable to convert copper matte into blister copper because air blast oxidizes the copper produced that settles at the bottom of the converter. For blowing copper matte a horizontal side blown pierce-smith  converter is employed .The products of the converter are slag and blister copper,which are produced at the different stages of the process.