Intsimbi ekrwada yobhedu, ekwabizwa ngokuba yisanti ye-copper slag okanye isanti ye-copper furnace, yi-slag eveliswa emva kokuba intsimbi yobhedu inyibilikiswa yaza yakhutshwa, ekwabizwa ngokuba yi-alten slag. I-slag icutshungulwa ngokutyumza kunye nokuhlola ngokweendlela ezahlukeneyo zokusetyenziswa kunye neemfuno, kwaye inkcazo ibonakaliswe ngenombolo ye-mesh okanye ubungakanani beengqungquthela. I-ore ye-Copper inobunzima obuphezulu, imilo ngedayimane, umxholo ophantsi we-ion ye-chloride, uthuli oluncinci ngexesha le-sandblasting, akukho ngcoliseko lokusingqongileyo, ukuphucula iimeko zokusebenza zabasebenzi be-sandblasting, umphumo wokususwa kwe-rust ungcono kunezinye isanti yokususa i-rust, kuba ingaphinda isetyenziswe; Iinzuzo zoqoqosho nazo zibaluleke kakhulu, iminyaka eli-10, umzi-mveliso wokulungisa, indawo yeenqanawa kunye neeprojekthi ezinkulu zesakhiwo sentsimbi zisebenzisa intsimbi ekrwada yobhedu njengokususwa kwerusi.
Xa umzobo wokutshiza okhawulezayo nosebenzayo ufuneka, i-copper slag iyona nto ifanelekileyo. Ngokuxhomekeke kwibakala, ivelisa i-etching enzima ukuya kwimodareyitha kwaye ishiya umphezulu ogqunywe ngeprimer kunye nepeyinti. I-copper slag yindawo esetyenziswayo ye-silica yasimahla yesanti yequartz.