ʻO Ferrosilicon kahi ʻano ferroalloy i haku ʻia e ka hoʻemi ʻana o ka silica a i ʻole ke one me ka coke i mua o ka hao.ʻO nā kumu hao maʻamau, ʻo ia ka hao a i ʻole ka millscale.ʻO nā ferrosilicons me ka ʻike silika a hiki i ka 15% i hana ʻia i loko o nā umu ahi i hoʻopaʻa ʻia me nā pōhaku lepo.