How is copper obtained from $Cu_{2}S$? Give reactions.

(N/A) Copper is obtained from copper$(I)$ sulfide $(Cu_{2}S)$ through a process known as self-reduction or auto-reduction by heating it in the presence of air.
First,a portion of the copper$(I)$ sulfide is converted into copper$(I)$ oxide by heating it in air:
$2Cu_{2}S + 3O_{2} \xrightarrow{\Delta} 2Cu_{2}O + 2SO_{2}$
Then,the remaining copper$(I)$ sulfide reacts with the copper$(I)$ oxide formed to produce metallic copper:
$2Cu_{2}O + Cu_{2}S \xrightarrow{\Delta} 6Cu + SO_{2}$