GB340497A - - Google Patents
Info
- Publication number
- GB340497A GB340497A GB29582/29A GB2958229A GB340497A GB 340497 A GB340497 A GB 340497A GB 29582/29 A GB29582/29 A GB 29582/29A GB 2958229 A GB2958229 A GB 2958229A GB 340497 A GB340497 A GB 340497A
- Authority
- GB
- United Kingdom
- Prior art keywords
- copper
- vessel
- lining
- class
- lined
- 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)
- Ceramic Products (AREA)
- Secondary Cells (AREA)
Abstract
340,497. Refining copper. ELECTRICAL RESEARCH PRODUCTS, Inc., 195, Broadway, New York, U.S.A.-(Assignees of Harris, J. E. ; 102, Oakland Terrace, Newark, and White, J. H. ; 20, Burchfield Avenue, Cranford, both in New Jersey, U.S.A.) Sept. 30, 1929, No. 29582. Convention date, March 8. [Class 82 (i).] Copper of high electrical conductivity which may be heated in a reducing atmosphere without becoming embrittled is produced by keeping molten pure copper in a vessel lined with a refractory material which is capable of preventing the vessel from giving up to the copper small portions of impurities and adding a deoxidizing agent. The lining may be a substantially pure oxide which is not readily reducible and which adheres to the vessel at the temperature of molten copper. In an example, a crucible 2, made of a mixture of fireclay and graphite, together with its lid 4, is lined with aluminium oxide, partially filled with commercially pure electrolytic copper and placed in an electric furnace 1. 0À1 per cent of calcium boride, preferably in crystalline form, is added just before pouring. Magnesium oxide may be used as a lining and the process may be carried out in a ladle. Reference has been directed by the Comptroller to Specification 16307/13, [Class 82 (i), Metals, Extracting &c.].
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US345258A US1852162A (en) | 1929-03-08 | 1929-03-08 | Refining of copper |
Publications (1)
Publication Number | Publication Date |
---|---|
GB340497A true GB340497A (en) | 1930-12-30 |
Family
ID=23354243
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB29582/29A Expired GB340497A (en) | 1929-03-08 | 1929-09-30 |
Country Status (3)
Country | Link |
---|---|
US (1) | US1852162A (en) |
FR (1) | FR690219A (en) |
GB (1) | GB340497A (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2772949A (en) * | 1952-06-07 | 1956-12-04 | Columbia Southern Chem Corp | Calcination of barium carbonate |
US2817509A (en) * | 1954-08-19 | 1957-12-24 | Electro Refractories & Abrasiv | Lined crucibles |
US2890879A (en) * | 1954-09-09 | 1959-06-16 | Kaiser Aluminium Chem Corp | Apparatus for melting and handling molten metals |
US2874953A (en) * | 1956-08-20 | 1959-02-24 | Dow Chemical Co | Lining for titanium-contacting apparatus |
US3196056A (en) * | 1959-09-28 | 1965-07-20 | Blaw Knox Co | Methods for protecting furnace parts and the like |
US3669435A (en) * | 1970-02-26 | 1972-06-13 | American Optical Corp | All-ceramic glass making system |
US4802425A (en) * | 1982-12-16 | 1989-02-07 | The Babcock & Wilcox Company | High temperature fiber system with controlled shrinkage and stress resistance |
-
1929
- 1929-03-08 US US345258A patent/US1852162A/en not_active Expired - Lifetime
- 1929-09-30 GB GB29582/29A patent/GB340497A/en not_active Expired
-
1930
- 1930-02-19 FR FR690219D patent/FR690219A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR690219A (en) | 1930-09-17 |
US1852162A (en) | 1932-04-05 |
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