<prompt> tafadhali geuza maudhui haya ya swahili kwenda kwa kiingereza.4cao p2o5 inayozalishwa na ni kiwanja thabiti, ambacho kimeshikwa kwenye slag, na hivyo kufikia kusudi la dephosphorization.  <response>: the 4caop2o5 produced by is a stable compound, which is firmly held in the slag, thus achieving the purpose of dephosphorization. 