GB340497A - - Google Patents

Info

Publication number
GB340497A
GB340497A GB2958229A GB2958229A GB340497A GB 340497 A GB340497 A GB 340497A GB 2958229 A GB2958229 A GB 2958229A GB 2958229 A GB2958229 A GB 2958229A GB 340497 A GB340497 A GB 340497A
Authority
GB
United Kingdom
Prior art keywords
copper
vessel
pure
lining
class
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
Application number
GB2958229A
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.)
ELECTRICAL RESEARCH PRODUCTS Inc
Original Assignee
ELECTRICAL RESEARCH PRODUCTS Inc
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
Priority to US345258A priority Critical patent/US1852162A/en
Application filed by ELECTRICAL RESEARCH PRODUCTS Inc filed Critical ELECTRICAL RESEARCH PRODUCTS Inc
Publication of GB340497A publication Critical patent/GB340497A/en
Expired legal-status Critical Current

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

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.].
GB2958229A 1929-03-08 1929-09-30 Expired GB340497A (en)

Priority Applications (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
GB2958229A 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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
US1852162A (en) 1932-04-05
FR690219A (en) 1930-09-17

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