公开(公告)号：US20150000467A1

公开(公告)日：2015-01-01

申请号：US13989452

申请日：2012-10-18

Applicant: Korea Institute of Geoscience and Mineral Resource

Inventor： Byung-Su Kim ,  Jae Chun Lee ,  Soo Bok Jeong ,  Doyun Shin

IPC: C22B5/00 ,  C22B1/00

CPC classification number: C22B5/00 ,  C22B1/005 ,  C22B7/04 ,  Y02P10/212

Abstract: The present invention provides a method of separating and recovering iron from a waste non-ferrous slag, generated in a process for smelting of non-ferrous metals, including copper, zinc and lead, in which a reducing agent and a reaction catalyst are added to the crushed waste non-ferrous slag, and the mixture is subjected to a reduction reaction, thereby converting amorphous iron oxides, bound to alumina, calcium oxide, magnesium oxide, silica, and the like in the waste non-ferrous slag, to crystalline iron (Fe) and iron carbide (Fe2C); the resulting material is crushed to separate iron and iron carbide obtained by the reduction reaction from components such as alumina, calcium oxide, magnesium oxide, silica, and the like; the crushed material is separated into fractions by particle size; and the fractions are subjected to wet magnetic separation and dry magnetic separation to separate and recover magnetic iron concentrates from the fractions.

Abstract translation: 本发明提供了一种从在有色金属（包括铜，锌和铅）冶炼的方法中产生的废废铁中分离和回收铁的方法，其中还添加了还原剂和反应催化剂 破碎的废铁矿渣，并对混合物进行还原反应，从而将废铁矿渣中与氧化铝，氧化钙，氧化镁，二氧化硅结合的无定形氧化铁转化为结晶铁 （Fe）和碳化铁（Fe2C）; 将所得到的材料粉碎以分离由氧化铝，氧化钙，氧化镁，二氧化硅等组分的还原反应获得的铁和碳化铁; 将粉碎的材料通过粒度分离成级分; 并将级分进行湿磁分离和干磁分离以分离并从馏分中回收磁性铁浓缩物。