GB760031A - Improvements relating to processes for the removal of sulphur from liquid blast furnace slag - Google Patents

Improvements relating to processes for the removal of sulphur from liquid blast furnace slag

Info

Publication number
GB760031A
GB760031A GB3418753A GB3418753A GB760031A GB 760031 A GB760031 A GB 760031A GB 3418753 A GB3418753 A GB 3418753A GB 3418753 A GB3418753 A GB 3418753A GB 760031 A GB760031 A GB 760031A
Authority
GB
United Kingdom
Prior art keywords
slag
surface layer
sulphur
flames
desulphurized
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
GB3418753A
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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 Mannesmann AG filed Critical Mannesmann AG
Publication of GB760031A publication Critical patent/GB760031A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B3/00General features in the manufacture of pig-iron
    • C21B3/04Recovery of by-products, e.g. slag
    • C21B3/06Treatment of liquid slag
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B2100/00Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/40Gas purification of exhaust gases to be recirculated or used in other metallurgical processes
    • C21B2100/42Sulphur removal
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B2400/00Treatment of slags originating from iron or steel processes
    • C21B2400/02Physical or chemical treatment of slags
    • C21B2400/034Stirring or agitating by pressurised fluids or by moving apparatus
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Charging Or Discharging (AREA)

Abstract

Liquid blast-furnace slag is desulphurized, e.g. before being blown into slag wool, by treating the surface of the slag in an open hearth furnace with flames containing free oxygen to oxidize the sulphur in the slag to SO2, and intermittently withdrawing the surface layer from which the sulphur has been removed. The bath of slag has flames played on the large surface presented to the atmosphere, and the desulphurized surface layer is withdrawn intermittently or continuously, e.g. by inclining the hearth or through adjustable outlets, while the surface layer is continually replaced by stirring, shaking or vibration. The slag may be further treated with flames containing free oxygen, while flowing along a trough with continued renewal of the surface layer by stirring, mechanical shaking, or ultrasonic vibration.ALSO:Liquid blast-furnace slag is desulphurized, e.g. before being blown into slag wool, by treating the surface of the slag in an open hearth furnace with flames containing free oxygen to oxidise the sulphur in the slag to SO2, and intermittently withdrawing the surface layer from which the sulphur has been removed. The bath of slag has flames played on the large surface presented to the atmosphere, and the desulphurized surface layer is withdrawn intermittently or continuously, e.g. by inclining the hearth or through adjustable outlets, while the surface layer is continually replaced by stirring shaking, or vibration. The slag may be further treated with flames containing free oxygen, while flowing along a trough with continued renewal of the surface layer by stirring, mechanical shaking, or ultrasonic vibration.
GB3418753A 1952-12-08 1953-12-08 Improvements relating to processes for the removal of sulphur from liquid blast furnace slag Expired GB760031A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE760031X 1952-12-08

Publications (1)

Publication Number Publication Date
GB760031A true GB760031A (en) 1956-10-31

Family

ID=6660686

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3418753A Expired GB760031A (en) 1952-12-08 1953-12-08 Improvements relating to processes for the removal of sulphur from liquid blast furnace slag

Country Status (1)

Country Link
GB (1) GB760031A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3175900A (en) * 1958-06-18 1965-03-30 Independence Foundation Process for the recovery of iron and uranium from slags, boiler waste and the like

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3175900A (en) * 1958-06-18 1965-03-30 Independence Foundation Process for the recovery of iron and uranium from slags, boiler waste and the like

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