Uboya be-Slag luhlobo lwefiber emhlophe ye-cotton-efana ne-mineral eyenziwe nge-slag njengeyona nto iphambili ekrwada kwaye inyibilika kwisithando somlilo esinyibilikayo ukufumana izinto ezinyibilikisiweyo.Emva kokuqhubela phambili, i-cotton-like mineral fiber ineempawu zokugcinwa kobushushu kunye nokufakwa kwesandi.Kukho iindlela ezimbini eziphambili zokuvelisa uboya be-slag: indlela yokutofa kunye nendlela ye-centrifugal.Izinto ezikrwada ziyanyibilika kwaye ziphume eziko, kwaye indlela yokuvuthela uboya be-slag nge-steam okanye umoya ocinezelweyo kuthiwa yi-injection method;indlela apho imathiriyeli ekrwada enyibilikisiweyo eziko iwela kwidiski ejikelezayo kwaye ijijelwe kuboya be-slag ngamandla e-centrifugal ibizwa ngokuba yindlela ye-centrifugal.Eyona nto iphambili yokuvelisa uboya be-slag yi-blast furnace slag, ebiza i-80% ukuya kwi-90%, kunye ne-fuel coke.

Ukusebenzisa i-blast furnace slag, i-ferromanganese kunye ne-ferronickel njengezinto eziluhlaza zoboya be-slag kunokunciphisa kakhulu ukusetyenziswa kwamandla okuvelisa kunye neendleko, ukuphucula okusingqongileyo, kwaye kwangaxeshanye kunenzuzo engcono yezoqoqosho.Ubalo lubonisa ukuba ngetoni nganye yeemveliso zokugquma uboya beminerali ezisetyenziswa kwizakhiwo, itoni enye ye-oyile inokugcinwa ngonyaka.Izinga lokonga amalahle kwindawo nganye yi-11.91kg-standard coal/m2 ngonyaka.Ngokuqhubeka nzulu kogcino lwamandla kunye nokunciphisa ukukhutshwa kwe-eneji kwilizwe lam, iimveliso zoboya bezimbiwa kunye nokusetyenziswa kwazo zijongene namathuba amakhulu ophuhliso.Kwiminyaka engama-20 edlulileyo, ukunikezelwa kwamandla kuye kwaqina ngakumbi.Ukugcina amandla okwakha, ukukhuselwa komlilo, ukugquma isandi kunye nokunciphisa ingxolo kuye kwaba yingqwalasela.Iimveliso zoboya bamaminerali zisetyenziswa ngokubanzi njengezinto ezintsha zokwakha kwindawo yokwakha.Uboya be-Slag buboya obufutshane be-fiber eyenziwe kwi-slag, esetyenziswa kakhulu njengemathiriyeli yokugquma ubushushu kunye nemathiriyeli yokufunxa isandi.