C - Chemistry – Metallurgy – 25 – D
Patent
C - Chemistry, Metallurgy
25
D
C25D 1/04 (2006.01) C25C 1/12 (2006.01) C25C 5/02 (2006.01)
Patent
CA 2176487
This invention relates to a process for making copper wire directly from a copper-bearing material, comprising: (A) contacting said copper-bearing material with an effective amount of at least one aqueous leaching solution to dissolve copper ions into said leaching solution and form a copper-rich aqueous leaching solution; (B) contacting said copper-rich aqueous leaching solution with an effective amount of at least one water-insoluble extractant to transfer copper ions from said copper-rich aqueous leaching solution to said extractant to form a copper-rich extractant and a copper-depleted aqueous leaching solution; (C) separating said copper-rich extractant from said copper-depleted aqueous leaching solution;. (D) contacting said copper-rich extractant with an effective amount of at least one aqueous stripping solution to transfer copper ions from said extractant to said stripping solution to form a copper-rich stripping solution and a copper-depleted extractant; (E) separating said copper-rich stripping solution from said copper-depleted extractant; (F) flowing said copper-rich stripping solution between an anode and a cathode, and applying an effective amount of voltage across said anode and said cathode to deposit copper on said cathode; (G) removing said copper from said cathode; and (H) converting said removed copper from (G) to copper wire at a temperature below the melting point of said copper. In one embodiment the copper that is deposited on the cathode during (F) is in the form of copper foil, and the process includes (H- 1) slitting the copper foil into a plurality of strands of copper wire and (H-2) shaping the strands of copper wire to provide said strands of copper wire with desired cross-sections. In one embodiment the copper that is deposited on the cathode during (F) is in the form of copper powder, and the process includes (H-1) extruding the copper powder to form copper rod or wire and (H-2) drawing the copper rod or wire to form copper wire with a desired cross-section. In one embodiment, during step (G) the copper while on said cathode is score cut to form a thin strand of copper which is then removed from the cathode, and during step (H) this thin strand of copper is shaped to form copper wire with a desired cross-section.
On décrit un procédé de fabrication de fil (12) de cuivre comprenant les étapes consistant: (A) à mettre en contact un matériau au cuivre avec une quantité d'au moins une liqueur d'attaque aqueuse afin de former une liqueur d'attaque aqueuse riche en cuivre; (B) à mettre en contact cette liqueur riche en cuivre avec une quantité d'au moins un solvant d'extraction soluble dans l'eau afin de former un solvant d'extraction riche en cuivre et une liqueur d'attaque aqueuse appauvrie en cuivre; (C) à séparer ce solvant d'extraction riche en cuivre de la liqueur d'attaque aqueuse appauvrie en cuivre; (D) à mettre en contact ce solvant d'extraction riche en cuivre avec une quantité d'au moins une solution de séparation afin de former une solution de séparation riche en cuivre et un solvant d'extraction appauvri en cuivre; (E) à séparer la solution de séparation riche en cuivre du solvant d'extraction appauvri en cuivre; (F) à faire circuler la solution de séparation riche en cuivre entre une anode et une cathode et à appliquer une certaine tension entre celles-ci afin que le cuivre se dépose sur la cathode; (G) à enlever le cuivre de la cathode; (H) à transformer le cuivre enlevé dans l'étape (G) en fil de cuivre à une température inférieure au point de fusion du cuivre.
Bay Adam G.
Eamon Michael A.
Kohut Stephen J.
Mills Bradford A.
Peckham Peter
Carton John K.
Electrocopper Products Limited
LandOfFree
Process for making copper wire does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for making copper wire, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for making copper wire will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1936563