JPS5481121A - Process for refining electroconductive copper - Google Patents

Process for refining electroconductive copper

Info

Publication number
JPS5481121A
JPS5481121A JP15012477A JP15012477A JPS5481121A JP S5481121 A JPS5481121 A JP S5481121A JP 15012477 A JP15012477 A JP 15012477A JP 15012477 A JP15012477 A JP 15012477A JP S5481121 A JPS5481121 A JP S5481121A
Authority
JP
Japan
Prior art keywords
copper
reduction treatment
period
charged
copper material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP15012477A
Other languages
Japanese (ja)
Other versions
JPS5745813B2 (en
Inventor
Kazuo Sawada
Shigeo Ezaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP15012477A priority Critical patent/JPS5481121A/en
Publication of JPS5481121A publication Critical patent/JPS5481121A/en
Publication of JPS5745813B2 publication Critical patent/JPS5745813B2/ja
Granted legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Manufacture And Refinement Of Metals (AREA)

Abstract

PURPOSE: To provide the subject process comprising charging a suitable quantity of phosphor us in the period from the start of oxidation treatment to reduction treatment and that of Ca in the period from the start of reduction treatment to the start of casting thereby to obtain electroconductive copper from which lead has been removed or reduced.
CONSTITUTION: In refining copper by melting a copper material containing copper scraps, in a period selected between the start of oxidation treatment to reduction treatment, 0.03 to 0.3% of phosphorus is charged into the copper material in the form of a Cu-10% P mother alloy. By this process, Pb can be greatly reduced and considerable quantities of Fe and Sn can also be removed. While carrying out the reduction treatment by the charging of phosphorus, a suitable quantity of Ca is charged in the copper material in the form of a Cu-5% Ca mother alloy. Further, boring is continued, and when the oxygen content is reduced to about 500 ppm, 0.02% of Ca is charged the rein. By this charging operation, impurities can be removed from the copper material containing impurities such as Pb, Sn and the like in a short period of time, easily and economically without requiring special facilities, complicating melting and casting steps, and also increasing consumptive loss of copper.
COPYRIGHT: (C)1979,JPO&Japio
JP15012477A 1977-12-13 1977-12-13 Process for refining electroconductive copper Granted JPS5481121A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15012477A JPS5481121A (en) 1977-12-13 1977-12-13 Process for refining electroconductive copper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15012477A JPS5481121A (en) 1977-12-13 1977-12-13 Process for refining electroconductive copper

Publications (2)

Publication Number Publication Date
JPS5481121A true JPS5481121A (en) 1979-06-28
JPS5745813B2 JPS5745813B2 (en) 1982-09-30

Family

ID=15489997

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15012477A Granted JPS5481121A (en) 1977-12-13 1977-12-13 Process for refining electroconductive copper

Country Status (1)

Country Link
JP (1) JPS5481121A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60176258A (en) * 1984-02-22 1985-09-10 Tamagawa Kikai Kinzoku Kk Lead material for semiconductor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51133125A (en) * 1975-04-16 1976-11-18 Csepeli Femmue Method of producing high quality copper by pyrometallurgical refining

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51133125A (en) * 1975-04-16 1976-11-18 Csepeli Femmue Method of producing high quality copper by pyrometallurgical refining

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60176258A (en) * 1984-02-22 1985-09-10 Tamagawa Kikai Kinzoku Kk Lead material for semiconductor
JPH0231500B2 (en) * 1984-02-22 1990-07-13 Mitsubishi Shindo Kk

Also Published As

Publication number Publication date
JPS5745813B2 (en) 1982-09-30

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