Passage: Farfadowa da karfe ta hanyar sake amfani da shi ya zama muhimmin aiki na masana'antar aluminum. Sake amfani da shi wani aiki ne mai zurfi har zuwa ƙarshen shekarun 1960, lokacin da karuwar amfani da gwangwani na abin sha na aluminum ya kawo shi ga fahimtar jama'a. Sake amfani da shi ya ƙunshi narkewa, wani tsari wanda ke buƙatar kawai 5% na makamashi da aka yi amfani da shi don samar da aluminum daga ma'adinai, ko da yake wani ɓangare mai mahimmanci (har zuwa 15% na kayan da aka shigar) ya ɓace a matsayin ƙura (ash-like oxide). A aluminum stack melt produces significantly less dross, with values reported below 1%. White dross from primary aluminum production and from secondary recycling operations still contains useful quantities of aluminum that can be extracted industrially. The process produces aluminum billets, along with a highly complex waste material. This waste is to manage. It reacts with important releasing, a mixture of concrete, water (including copper, acetylene, and ammonia gas), as these gases are difficult to ignitate in contact with air
masana'antar aluminum