US664537A - Process of extracting copper. - Google Patents

Process of extracting copper. Download PDF

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US664537A
US664537A US3078500A US1900030785A US664537A US 664537 A US664537 A US 664537A US 3078500 A US3078500 A US 3078500A US 1900030785 A US1900030785 A US 1900030785A US 664537 A US664537 A US 664537A
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copper
chlorin
matte
chlorid
electrolyte
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US3078500A
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James Douglas
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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
    • C25C1/12—Electrolytic production, recovery or refining of metals by electrolysis of solutions of copper

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  • This invention has for its object the utilization of the chlorin or its compounds evolved in the separation of copper from solid cuprous chlorid by electrolysis for the extraction of copper fromcopper ores and copper matte.
  • Patent No. 563,144 granted to me June 30, 1896, a process for extracting copper from solid cuprous chlorid suspended in an electrolyte by electrolysis is set forth and the resultant products are metallic copper, an acid compound of chlorin, which remains in the fluid electrolyte, and chlorin or gaseous compounds of chlorin, which escape from the Vessel in which the operation is effected.
  • This gas which has acid properties, can be absorbed by slaked lime, as in the ordinary bleaching-powder process; but I have discovered that it can also be used as a solvent of copper by bringing it into contact with moistened copper ore or copper m tte whether the ore and matte be oxidized or not.
  • the absorption of the chlorin or chlorin compound by being brought into cont-act with the moistened copper ore or matte can be eifected in any of the appliances usually employed for such a purpose; but I prefer to fill towers or large earthenware tubes with the absorbent and connect them with the vessel in which the copper is extracting from the cuprous chlorid in the manner aforesaid.
  • the vessel or vat l is closed by the cover 2 and receives the solid cuprous chlorid 3 and electrolyte 4, which varies under different conditions. For instance, at one stage of the pounds of copper and other metals.
  • the electrolyte may consist of solid cuprous chlorid, into which the cathode is placed, and water slightly acidified with, say,- hydrochloric acid to enable it to conduct the current.
  • the process goes on the current deposits metallic copper and liberates chlorin and chlorin compounds, and at the end of this a solutioncontaining acid and various com-
  • the anode 5 is immersed in the electrolyte and the cathode 6 is inserted in the cuprous chlorid.
  • the tower, tube, or receptacle 8 is connected with the vessel 1 by means ofa pipe 7.
  • the copper ore or matte 9 isplaced in the receptacle 8 and is dissolved by the chlorin or gaseous compound of chlorin evolved from the electrolytic separation of the cuprous chlorid in the vessel 1.
  • the compounds of copper formed consist in part of cupric chlorid, which is soluble in water, and in part of cuprous chlorid, which is insoluble in water, but may be dissolved by a solution of any of the alkaline chlorids, such as chlorid of sodium or chlorid of calcium, or by the acid electrolyte, which, as stated, is one of the resultsof the electrolytic operation in the vessel 1. If the electrolyte from the vat or vessel 1 be used to dissolve the cuprous chlorid, the solution may be allowed to flow back into the vat, where the copper can be deposited electrolytically.

Description

No. 664,537. Patented Dec. 25, I900. J. DDUGLAS.
PRDCESS o'F ExfnAcTma COPPER.
(Application filed Sept. 22) 1900.! (No Model.)
UNITED STATES PATENT O FICE.
JAMES DOUGLAS, or NEW YORK, N. Y.
PROCESS OF EXTRACTING COPPER.
SPECIFICATION forming part of Letters Patent No. 664,537, dated December 25, 190
Application filed September 22, 1900. Serial No. 30.785. (No specimens.)
To aZZ whom it may concern:
Be it known that I, JAMES DOUGLAS, a subject of the Queen of Great Britain, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Processes of Extracting Copper from Copper Ore and Matte; and ldo hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. r
This invention has for its object the utilization of the chlorin or its compounds evolved in the separation of copper from solid cuprous chlorid by electrolysis for the extraction of copper fromcopper ores and copper matte.
In Patent No. 563,144, granted to me June 30, 1896, a process for extracting copper from solid cuprous chlorid suspended in an electrolyte by electrolysis is set forth and the resultant products are metallic copper, an acid compound of chlorin, which remains in the fluid electrolyte, and chlorin or gaseous compounds of chlorin, which escape from the Vessel in which the operation is effected. This gas, which has acid properties, can be absorbed by slaked lime, as in the ordinary bleaching-powder process; but I have discovered that it can also be used as a solvent of copper by bringing it into contact with moistened copper ore or copper m tte whether the ore and matte be oxidized or not. The absorption of the chlorin or chlorin compound by being brought into cont-act with the moistened copper ore or matte can be eifected in any of the appliances usually employed for such a purpose; but I prefer to fill towers or large earthenware tubes with the absorbent and connect them with the vessel in which the copper is extracting from the cuprous chlorid in the manner aforesaid.
While the process can be effected in a variety of apparatus, I prefer that shown, which is substantially the same as that illustrated in my Patent No. 563,144, herein referred to, with the addition of a tower or tube to receive the absorbent to be reduced. a
The vessel or vat l is closed by the cover 2 and receives the solid cuprous chlorid 3 and electrolyte 4, which varies under different conditions. For instance, at one stage of the pounds of copper and other metals.
process the electrolyte may consist of solid cuprous chlorid, into which the cathode is placed, and water slightly acidified with, say,- hydrochloric acid to enable it to conduct the current. As the process goes on the current deposits metallic copper and liberates chlorin and chlorin compounds, and at the end of this a solutioncontaining acid and various com- The anode 5 is immersed in the electrolyte and the cathode 6 is inserted in the cuprous chlorid. The tower, tube, or receptacle 8 is connected with the vessel 1 by means ofa pipe 7. The copper ore or matte 9 isplaced in the receptacle 8 and is dissolved by the chlorin or gaseous compound of chlorin evolved from the electrolytic separation of the cuprous chlorid in the vessel 1.
When the copper ore or matte 9 in the re ceptacle 8 is subjected to chlorin or gaseous compound of chlorin, the compounds of copper formed consist in part of cupric chlorid, which is soluble in water, and in part of cuprous chlorid, which is insoluble in water, but may be dissolved by a solution of any of the alkaline chlorids, such as chlorid of sodium or chlorid of calcium, or by the acid electrolyte, which, as stated, is one of the resultsof the electrolytic operation in the vessel 1. If the electrolyte from the vat or vessel 1 be used to dissolve the cuprous chlorid, the solution may be allowed to flow back into the vat, where the copper can be deposited electrolytically.
Having thus described the invention, what is claimed as new .is
1. The processof reducing copper ore and matte, which consists in electrolyzing solid cuprous chlorid and employing the gases evolved in the treatment of copper ore and matte, substantially as described.
2. The process of reducing copper ore and matte, which consists in electrolyzing solid cuprous chlorid, employing the gases evolved In testimony whereof I afiix my signature in the treatment of copper ore and matte, emin presence of two witnesses.
ploying the electrolyte resultin from the electrolyzing of the solid cuprou; ohlorid as JAMES U 5 a solvent for the cuprous chlorid so produced, Witnesses:
and recovering the copper from the solution F. C. MAUSER,
by electrolysis, substantially as specified. GEORGE CHAPMAN.
US3078500A 1900-09-22 1900-09-22 Process of extracting copper. Expired - Lifetime US664537A (en)

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