GB640195A - Improvements in or relating to melting, re-melting and recovering of aluminium and its alloys - Google Patents

Improvements in or relating to melting, re-melting and recovering of aluminium and its alloys

Info

Publication number
GB640195A
GB640195A GB34216/47A GB3421647A GB640195A GB 640195 A GB640195 A GB 640195A GB 34216/47 A GB34216/47 A GB 34216/47A GB 3421647 A GB3421647 A GB 3421647A GB 640195 A GB640195 A GB 640195A
Authority
GB
United Kingdom
Prior art keywords
furnace
salt
rotational speed
melting
speed
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
GB34216/47A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB640195A publication Critical patent/GB640195A/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
    • C22B21/00—Obtaining aluminium
    • C22B21/06—Obtaining aluminium refining
    • C22B21/062—Obtaining aluminium refining using salt or fluxing agents

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)

Abstract

A method of melting aluminium and aluminium alloys in a rotary furnace under a salt bath comprises the steps of introducing into the furnace a batch of salt having a melting point equal to or nearly equal to that of the charge to be melted, heating the salt to its melting temperature as the furnace is rotated at a speed intermediate between its minimum rotational speed and the highest rotational speed at which no centrifuging takes place, heating the melted salt to a temperature higher than its melting point while rotating at the said highest rotational speed, cutting off heating while maintaining high rotational speed and charging the metal to be melted until the salt cools and solidifies forming a conglomerate with the metal to be melted, heating the conglomerate while rotating the furnace at its minimum rotational speed till liquefaction commences, rotating the furnace at the said intermediate speed between the start and end of liquefaction and then at the said highest speed until the casting temperature of the metal is attained. As a modification of the method, during the stage of charging the metal, the furnace may be alternatively rotated at a low speed through a small angle and held stationary. The treatment of aluminium-copper alloys is referred to.
GB34216/47A 1942-12-12 1947-12-24 Improvements in or relating to melting, re-melting and recovering of aluminium and its alloys Expired GB640195A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT263331X 1942-12-12

Publications (1)

Publication Number Publication Date
GB640195A true GB640195A (en) 1950-07-12

Family

ID=11219246

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34216/47A Expired GB640195A (en) 1942-12-12 1947-12-24 Improvements in or relating to melting, re-melting and recovering of aluminium and its alloys

Country Status (4)

Country Link
US (1) US2768075A (en)
CH (1) CH263331A (en)
FR (1) FR918918A (en)
GB (1) GB640195A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3769001A (en) * 1971-05-03 1973-10-30 Ethyl Corp Metallurgical process for recovering aluminum from aluminum scrap
EP0527644A1 (en) * 1991-08-13 1993-02-17 Imco Recycling, Inc. Potassium fertilizer from aluminum reclamation by-products

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3115421A (en) * 1961-01-24 1963-12-24 American Chain & Cable Co Hot dip coating
US3198504A (en) * 1961-09-14 1965-08-03 Ankersen Borge Richard Barrel salt bath furnaces
US3215419A (en) * 1961-10-18 1965-11-02 Borge R Ankersen Salt pumps and heat treating lines
US3206182A (en) * 1961-10-20 1965-09-14 Borge R Ankersen Rotary barrel salt bath furnaces
US3189491A (en) * 1962-07-02 1965-06-15 Dow Chemical Co Aluminum flux
US4959100A (en) * 1987-12-22 1990-09-25 Alcan International Limited Recovery of non-ferrous metals from dross
CA1255914A (en) * 1987-12-22 1989-06-20 Ghyslain Dube Recovery of non-ferrous metals from dross
CA2116249A1 (en) * 1994-02-23 1995-08-24 Han Spoel Method and apparatus for recovery of non-ferrous metals from scrap and dross

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US451405A (en) * 1891-04-28 Aluminium alloy
US1380767A (en) * 1919-12-03 1921-06-07 Booth Electric Furnace Co Process for melting metal turnings, borings, &c.
US1904781A (en) * 1932-12-27 1933-04-18 J L Case Company Furnace
US2128444A (en) * 1933-10-25 1938-08-30 Vroonen Emile Process for the purification of molten metals
US2312811A (en) * 1940-05-31 1943-03-02 Alloy Processes Ltd Distillation and condensation of metals
US2382723A (en) * 1941-09-22 1945-08-14 Kirsebom Gustaf Newton Method of producing or refining aluminum
US2337072A (en) * 1942-02-16 1943-12-21 Budd Wheel Co Melting furnace
US2387014A (en) * 1943-05-15 1945-10-16 Cowham Engineering Company Rotary kiln
US2599159A (en) * 1946-09-13 1952-06-03 Harry B Breedlove Liquid level and flow control

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3769001A (en) * 1971-05-03 1973-10-30 Ethyl Corp Metallurgical process for recovering aluminum from aluminum scrap
EP0527644A1 (en) * 1991-08-13 1993-02-17 Imco Recycling, Inc. Potassium fertilizer from aluminum reclamation by-products
US5300136A (en) * 1991-08-13 1994-04-05 Imco Recycling, Inc. Potassium fertilizer from aluminum reclamation by-products
AU648191B2 (en) * 1991-08-13 1994-04-14 Imco Recycling Inc. Potassium fertilizer from aluminum by-products

Also Published As

Publication number Publication date
CH263331A (en) 1949-08-31
FR918918A (en) 1947-02-21
US2768075A (en) 1956-10-23

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