公开(公告)号：US10697041B2

公开(公告)日：2020-06-30

申请号：US15820992

申请日：2017-11-22

Applicant: SungEel HiMetal

Inventor： Young-Myoung Seo ,  Kang-Myung Yi ,  Ki-Woong Lee ,  Suk-Hyun Byun ,  Hyun-Jin Sung

IPC: C22B15/00 ,  C22B1/24 ,  C22B1/242 ,  C22B1/243 ,  C22B1/244 ,  C01F11/18

Abstract: The present invention provides a manufacturing method of crude copper from low-grade copper sludge, one embodiment of the present invention comprises the steps of: (1) calcining a low-grade copper sludge (step 1); (2) producing a mixture by adding at least one selected from a group consisting of binder, flux and combinations thereof to the calcined low-grade copper sludge (step 2); (3) producing a briquette by compression molding the mixture (step 3); (4) melting and reducing by charging the briquette into a submerged arc furnace with adding flux (step 4); and (5) separating crude copper and slag produced by melting and reducing (step 5).