In formation of daaweynta dusha biraha geeddi-socodka film maqaarka fosfate, soo saari doonaa tiro badan oo ah slag fosfate, sida ka saarida waqtiga kuwan hakiyay ee qayb ka slag ganaax dareere ah, waxay saameyn doontaa xasiloonida iyo nadaafadda dareeraha taangiga, si toos ah saameeya heerka u-qalmitaanka alaabta.Sidaa darteed, waxaa lagama maarmaan ah in la habeeyo mashiinka ka saarista fosfatka ee tooska ah ee khadka wax soo saarka.