Ko te para silicon he hua taha o te whakarewatanga o te silicon me te ferrosilicon. He momo para e rere ana i runga i te oumu i te wā e whakarewahia ana te silicon. Ko tōna ihirangi kei waenga i te 45% ki te 70%, ā, ko te toenga he C,S,P,Al,Fe,Ca. He iti ake te utu i te konganuku silicon parakore. Engari i te whakamahi i te ferrosilicon mō te hanga maitai, ka taea te whakaiti i te utu.
