GB1351089A - Refining of copper - Google Patents
Refining of copperInfo
- Publication number
- GB1351089A GB1351089A GB5256972A GB5256972A GB1351089A GB 1351089 A GB1351089 A GB 1351089A GB 5256972 A GB5256972 A GB 5256972A GB 5256972 A GB5256972 A GB 5256972A GB 1351089 A GB1351089 A GB 1351089A
- Authority
- GB
- United Kingdom
- Prior art keywords
- copper
- sulphur
- atmospheres
- melt
- oxygen content
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B15/00—Obtaining copper
- C22B15/0026—Pyrometallurgy
- C22B15/006—Pyrometallurgy working up of molten copper, e.g. refining
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Logic Circuits (AREA)
Abstract
1351089 Refining copper INTERNATIONAL NICKEL CO OF CANADA Ltd 14 Nov 1972 [15 Nov 1971] 52569/72 Heading C7D Impure copper, e.g. cement copper, containing up to 5% iron, up to 10% oxygen, up to 1% sulphur and arsenic, bizmuth, lead, selenium, tellurium, tin and/or zinc, is refined by a process which comprises:- (a) Melting the copper while adjusting the oxygen content to ensure that there is sufficient to combine with all the sulphur as sulphur dioxide, but insufficient to form a separate cuprous oxide phase. (b) Removing any slag from the molten bath. (c) Passing a purge gas through the melt while maintaining a pressure less than 0À01 atmospheres. (d) Reducing the pressure to less than 0À0002 atmospheres without any purge gas. (e) Deoxidising the melt. (f) Casting. In order to adjust the oxygen content in step (a) the impure copper may be pelletized or briquetted with reducing agents e. g. fuel oil and then melted at 1250-1400 C. Iron oxide is removed in the slag at step (b). Step (c) involves desulphurisation by passing a purge gas e.g. nitrogen, argon, air carbon dioxide or oxygen through the melt at pressures preferably between 0À001 and 0À0002 atmospheres, which assists removal of sulphur as sulphur dioxide. The reduction of pressure, preferably to below 0À0001 atmoshperes, in step (d) eliminates other volatile impurities while mechanically or inductively agitating the melt. Deoxidation in step (f) may be accomplished with a reducing gas e.g. hydrogen, carbon monoxide, natural gas or propane until oxygen content is below 0À05% and then with granular carbon while agitating with nitrogen or argon under pressures of less than 0À01 atmospheres. Optionally, complete deoxidation can be accomplished with phosphorus.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US19898471A | 1971-11-15 | 1971-11-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1351089A true GB1351089A (en) | 1974-04-24 |
Family
ID=22735728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5256972A Expired GB1351089A (en) | 1971-11-15 | 1972-11-14 | Refining of copper |
Country Status (15)
| Country | Link |
|---|---|
| US (1) | US3767383A (en) |
| JP (1) | JPS524250B2 (en) |
| BE (1) | BE791287A (en) |
| CA (1) | CA973720A (en) |
| DE (1) | DE2255977C3 (en) |
| ES (1) | ES408574A1 (en) |
| FI (1) | FI60239C (en) |
| FR (1) | FR2160439B1 (en) |
| GB (1) | GB1351089A (en) |
| NL (1) | NL7215477A (en) |
| NO (1) | NO131550C (en) |
| PH (1) | PH9937A (en) |
| SE (1) | SE396770B (en) |
| ZA (1) | ZA727948B (en) |
| ZM (1) | ZM17772A1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4010030A (en) * | 1975-09-08 | 1977-03-01 | Kennecott Copper Corporation | Removal of arsenic, antimony and bismuth from molten copper with sulfur hexafluoride |
| JPS59211541A (en) * | 1983-05-18 | 1984-11-30 | Nippon Mining Co Ltd | Method for vacuum-refining crude copper |
| JPS59226131A (en) * | 1983-06-06 | 1984-12-19 | Nippon Mining Co Ltd | Vacuum refining device for crude copper |
| SE445361B (en) * | 1984-12-12 | 1986-06-16 | Boliden Ab | PROCEDURE FOR REPAIRING SECONDARY METAL MELTING MATERIALS COPYING |
| JPS61177341A (en) * | 1985-01-31 | 1986-08-09 | Sumitomo Metal Mining Co Ltd | Treatment of copper converter slag |
| CA1338426C (en) * | 1989-07-31 | 1996-07-02 | Walter Curlook | Nitrogen / air blasts in ni-cu converters |
| JPH05287402A (en) * | 1992-04-09 | 1993-11-02 | Mitsubishi Materials Corp | Production of extra-low oxygen copper and extra-low oxygen copper obtained by this production |
| CA2231717A1 (en) * | 1998-03-11 | 1999-09-11 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Proced Es Georges Claude | Use of gaseous mixtures containing an inert gas and an oxygen containing gas in desulphurization of blister copper during anode refining |
| DE10035593A1 (en) | 2000-07-21 | 2002-01-31 | Norddeutsche Affinerie | Reducing oxygen content of copper melt comprises melting copper initially in shaft furnace, and subsequently feeding it to treatment furnace via transporting channel |
| CN102492959B (en) * | 2011-12-28 | 2014-03-19 | 重庆重冶铜业有限公司 | Production method of electrolytic copper anode |
| TW202130824A (en) * | 2019-11-22 | 2021-08-16 | 比利時商梅泰洛比利時公司 | Improved copper smelting process |
Family Cites Families (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3123466A (en) * | 1964-03-03 | crampton | ||
| US103434A (en) * | 1870-05-24 | Improved process for the treatment of ores | ||
| US1348457A (en) * | 1920-02-05 | 1920-08-03 | Strasser Albert | Process for deoxidizing copper and its alloys |
| US1576776A (en) * | 1925-08-01 | 1926-03-16 | Nichols Copper Co | Conversion of cuprous materials |
| GB510861A (en) * | 1938-04-06 | 1939-08-09 | Heraeus Vacuumschmelze Ag | An improved process for the production of copper free from oxygen and other gases |
| BE506112A (en) * | 1950-09-28 | |||
| GB698758A (en) * | 1951-05-01 | 1953-10-21 | Otto Nielsen | Improvements in and relating to the de-sulphurisation and de-gasification of copper |
| BE622116A (en) * | 1961-09-27 | |||
| NL301992A (en) * | 1963-01-02 | |||
| US3282675A (en) * | 1964-05-27 | 1966-11-01 | Inspiration Cons Copper Compan | Up-grading cement copper |
| GB1052907A (en) * | 1964-12-01 | 1966-12-30 | ||
| GB1071127A (en) * | 1965-05-25 | 1967-06-07 | Ass Elect Ind | Deoxidation of copper and its alloys |
| US3288599A (en) * | 1965-06-02 | 1966-11-29 | Harmon E Keyes | Copper recofery process |
| US3424575A (en) * | 1965-08-10 | 1969-01-28 | Chemetals Corp | Recovery of copper from acid copper sulfate solutions |
| SE336231B (en) * | 1965-08-10 | 1971-06-28 | Phelps Dodge Corp | |
| US3298070A (en) * | 1965-08-13 | 1967-01-17 | Chemetals Corp | Method of producing oxygen-free high conductivity copper |
| GB1130255A (en) * | 1965-11-22 | 1968-10-16 | Conzinc Riotinto Ltd | Reverberatory smelting of copper concentrates |
| US3470936A (en) * | 1966-09-12 | 1969-10-07 | Bethlehem Steel Corp | Method for producing high purity copper castings |
| US3490899A (en) * | 1966-10-18 | 1970-01-20 | Continental Copper & Steel Ind | Refined copper and process therefor |
| US3490897A (en) * | 1967-10-27 | 1970-01-20 | Olin Mathieson | Process for producing low oxygen,high conductivity copper |
| AU422152B2 (en) * | 1968-02-16 | 1972-03-07 | Monzino Riotinto Of Australia Limited | Method and apparatus for refining metals |
| US3630722A (en) * | 1969-10-13 | 1971-12-28 | Frank D Chew | Copper-refining process |
| US3669646A (en) * | 1969-11-21 | 1972-06-13 | John T Cullom | Process for autogenous smelting of copper ore concentrates and charge product therefor |
| US3622304A (en) * | 1970-03-03 | 1971-11-23 | Us Interior | Ferrothermic extraction of copper |
| US3674463A (en) * | 1970-08-04 | 1972-07-04 | Newmont Exploration Ltd | Continuous gas-atomized copper smelting and converting |
-
0
- BE BE791287D patent/BE791287A/en unknown
-
1971
- 1971-11-15 US US00198984A patent/US3767383A/en not_active Expired - Lifetime
-
1972
- 1972-10-02 CA CA153,029A patent/CA973720A/en not_active Expired
- 1972-11-09 ZA ZA727948A patent/ZA727948B/en unknown
- 1972-11-10 PH PH14073A patent/PH9937A/en unknown
- 1972-11-10 ZM ZM177/72*UA patent/ZM17772A1/en unknown
- 1972-11-14 SE SE7214758A patent/SE396770B/en unknown
- 1972-11-14 NO NO4123/72A patent/NO131550C/no unknown
- 1972-11-14 FR FR7240335A patent/FR2160439B1/fr not_active Expired
- 1972-11-14 GB GB5256972A patent/GB1351089A/en not_active Expired
- 1972-11-14 FI FI3184/72A patent/FI60239C/en active
- 1972-11-15 JP JP47114630A patent/JPS524250B2/ja not_active Expired
- 1972-11-15 DE DE2255977A patent/DE2255977C3/en not_active Expired
- 1972-11-15 NL NL7215477A patent/NL7215477A/xx not_active Application Discontinuation
- 1972-11-17 ES ES408574A patent/ES408574A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2255977C3 (en) | 1974-11-28 |
| US3767383A (en) | 1973-10-23 |
| FI60239B (en) | 1981-08-31 |
| JPS4861322A (en) | 1973-08-28 |
| NO131550C (en) | 1975-06-18 |
| NO131550B (en) | 1975-03-10 |
| BE791287A (en) | 1973-05-14 |
| PH9937A (en) | 1976-06-14 |
| SE396770B (en) | 1977-10-03 |
| JPS524250B2 (en) | 1977-02-02 |
| NL7215477A (en) | 1973-05-17 |
| FR2160439B1 (en) | 1975-01-03 |
| FI60239C (en) | 1981-12-10 |
| ZM17772A1 (en) | 1973-07-23 |
| DE2255977A1 (en) | 1973-05-30 |
| DE2255977B2 (en) | 1974-04-25 |
| ZA727948B (en) | 1973-09-26 |
| FR2160439A1 (en) | 1973-06-29 |
| CA973720A (en) | 1975-09-02 |
| ES408574A1 (en) | 1976-03-16 |
| AU4869872A (en) | 1973-09-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |