GB782984A - Process for refining metals and apparatus for performing the same - Google Patents

Process for refining metals and apparatus for performing the same

Info

Publication number
GB782984A
GB782984A GB25295/54A GB2529554A GB782984A GB 782984 A GB782984 A GB 782984A GB 25295/54 A GB25295/54 A GB 25295/54A GB 2529554 A GB2529554 A GB 2529554A GB 782984 A GB782984 A GB 782984A
Authority
GB
United Kingdom
Prior art keywords
carbon
molten
slag
charge
calcium aluminate
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
GB25295/54A
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
Priority to US125934A priority Critical patent/US2688535A/en
Application filed by Individual filed Critical Individual
Priority to GB25295/54A priority patent/GB782984A/en
Publication of GB782984A publication Critical patent/GB782984A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
    • 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
    • C22B5/00—General methods of reducing to metals
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/20—Increasing the gas reduction potential of recycled exhaust gases
    • C21B2100/28—Increasing the gas reduction potential of recycled exhaust gases by separation
    • C21B2100/282—Increasing the gas reduction potential of recycled exhaust gases by separation of carbon dioxide
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/60—Process control or energy utilisation in the manufacture of iron or steel
    • C21B2100/66—Heat exchange
    • 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
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/134—Reduction of greenhouse gas [GHG] emissions by avoiding CO2, e.g. using hydrogen

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

Calcium aluminate is prepared from bauxite ore by charging the ore into a ladle or crucible together with alternate layers of carbon and lime, the charge being covered with charcoal or other form of lumpy carbon. Reaction between the components of the charge is started by pouring in molten slag or molten metal or by blowing in hot air which heats the charge by combustion of the carbon. The slag-producing reaction once started is exothermic and self-supporting, oxides of iron, silicon and manganese being reduced to form a molten metal bath on which molten calcium aluminate slag is formed. The reduction is aided by forcing the hot carbon down into the molten bath by means of a plunger. Completion of the reduction may be ensured by blowing hot carbon monoxide or hydrogen into the melt. The molten refined calcium aluminate slag is tapped and may be treated to produce substantially pure alumina by dissolving in sodium carbonate solution, separating the precipitated calcium carbonate and precipitating alumina from the remaining solution by addition of carbon dioxide. U.S.A. Specification 2,243,110 is referred to.
GB25295/54A 1949-11-07 1954-08-31 Process for refining metals and apparatus for performing the same Expired GB782984A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US125934A US2688535A (en) 1949-11-07 1949-11-07 Metallurgical process
GB25295/54A GB782984A (en) 1954-08-31 1954-08-31 Process for refining metals and apparatus for performing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB25295/54A GB782984A (en) 1954-08-31 1954-08-31 Process for refining metals and apparatus for performing the same

Publications (1)

Publication Number Publication Date
GB782984A true GB782984A (en) 1957-09-18

Family

ID=10225386

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25295/54A Expired GB782984A (en) 1949-11-07 1954-08-31 Process for refining metals and apparatus for performing the same

Country Status (1)

Country Link
GB (1) GB782984A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103643050A (en) * 2013-12-12 2014-03-19 攀枝花钢城集团有限公司 Method for producing aluminum oxide by utilizing high-alumina premelting slag

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103643050A (en) * 2013-12-12 2014-03-19 攀枝花钢城集团有限公司 Method for producing aluminum oxide by utilizing high-alumina premelting slag
CN103643050B (en) * 2013-12-12 2016-08-17 攀枝花钢城集团有限公司 A kind of method utilizing high alumina pre-melted slag to produce aluminum oxide

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