FI910691A - Process for the melting of waste gypsum and ferrous material for the recovery of difficult soluble slag and sulfur - Google Patents

Process for the melting of waste gypsum and ferrous material for the recovery of difficult soluble slag and sulfur Download PDF

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Publication number
FI910691A
FI910691A FI910691A FI910691A FI910691A FI 910691 A FI910691 A FI 910691A FI 910691 A FI910691 A FI 910691A FI 910691 A FI910691 A FI 910691A FI 910691 A FI910691 A FI 910691A
Authority
FI
Finland
Prior art keywords
ferrous material
sulfur
melting
recovery
waste gypsum
Prior art date
Application number
FI910691A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI92151B (en
FI92151C (en
FI910691A0 (en
Inventor
Juho Kaarlo Maekinen
Ilkka Veikko Kojo
Original Assignee
Outokumpu Oy
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 Outokumpu Oy filed Critical Outokumpu Oy
Priority to FI910691A priority Critical patent/FI92151C/en
Publication of FI910691A0 publication Critical patent/FI910691A0/en
Publication of FI910691A publication Critical patent/FI910691A/en
Publication of FI92151B publication Critical patent/FI92151B/en
Application granted granted Critical
Publication of FI92151C publication Critical patent/FI92151C/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/02—Agglomerated materials, e.g. artificial aggregates
    • C04B18/023—Fired or melted materials
    • C04B18/026—Melted materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00017—Aspects relating to the protection of the environment
    • 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
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Civil Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Processing Of Solid Wastes (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

The invention concerns a method for smelting of waste plaster and ferrous material in a flame smelting furnace in which the recovered product is a sparingly soluble slag suitable for further use or for storage, and a gas containing sulphur dioxide whose content is optimal for recovering the sulphur as elementary sulphur, as sulphur dioxide in liquid form or as sulphuric acid.
FI910691A 1991-02-13 1991-02-13 Method for melting waste gypsum and ferrous material to recover sparingly soluble slag and sulfur FI92151C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FI910691A FI92151C (en) 1991-02-13 1991-02-13 Method for melting waste gypsum and ferrous material to recover sparingly soluble slag and sulfur

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI910691A FI92151C (en) 1991-02-13 1991-02-13 Method for melting waste gypsum and ferrous material to recover sparingly soluble slag and sulfur
FI910691 1991-02-13

Publications (4)

Publication Number Publication Date
FI910691A0 FI910691A0 (en) 1991-02-13
FI910691A true FI910691A (en) 1992-08-14
FI92151B FI92151B (en) 1994-06-30
FI92151C FI92151C (en) 1994-10-10

Family

ID=8531907

Family Applications (1)

Application Number Title Priority Date Filing Date
FI910691A FI92151C (en) 1991-02-13 1991-02-13 Method for melting waste gypsum and ferrous material to recover sparingly soluble slag and sulfur

Country Status (1)

Country Link
FI (1) FI92151C (en)

Also Published As

Publication number Publication date
FI92151B (en) 1994-06-30
FI92151C (en) 1994-10-10
FI910691A0 (en) 1991-02-13

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Legal Events

Date Code Title Description
FG Patent granted

Owner name: OUTOKUMPU OY

BB Publication of examined application
MM Patent lapsed