Ferromanganese imhando yeferroalloy inoumbwa nesimbi uye manganese.inogadzirwa nekupisa musanganiswa wemaoksidhi MnO2 uye Fe2O3, nekabhoni, kazhinji semarasha uye coke, mune ingave muvira rinoputika kana yemagetsi arc furnace-mhando system, inonzi undermerged arc furnace.