How is antimony produced by reducing antimony oxide with carbon?

To produce metallic antimony from its ores, the primary mineral stibnite (Sb₂S₃) is first converted into an oxide. Once this conversion is complete, the antimony oxide is subjected to a reduction process using carbon. This chemical reduction effectively strips the oxygen from the compound, liberating the pure antimony metal, which is then further purified and cast into cakes known as regulus.1