NL7712077A - Iron recovery from LD slag - by reducing with carbon in presence of aluminosilicate flux - Google Patents

Iron recovery from LD slag - by reducing with carbon in presence of aluminosilicate flux

Info

Publication number
NL7712077A
NL7712077A NL7712077A NL7712077A NL7712077A NL 7712077 A NL7712077 A NL 7712077A NL 7712077 A NL7712077 A NL 7712077A NL 7712077 A NL7712077 A NL 7712077A NL 7712077 A NL7712077 A NL 7712077A
Authority
NL
Netherlands
Prior art keywords
slag
flux
mixt
carbon
particles
Prior art date
Application number
NL7712077A
Other languages
Dutch (nl)
Original Assignee
Nederlandse Cement Ind
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 Nederlandse Cement Ind filed Critical Nederlandse Cement Ind
Priority to NL7712077A priority Critical patent/NL7712077A/en
Publication of NL7712077A publication Critical patent/NL7712077A/en

Links

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
    • C04B7/00—Hydraulic cements
    • C04B7/14—Cements containing slag
    • C04B7/147—Metallurgical slag
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B3/00—General features in the manufacture of pig-iron
    • C21B3/02—General features in the manufacture of pig-iron by applying additives, e.g. fluxing agents
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B3/00—General features in the manufacture of pig-iron
    • C21B3/04—Recovery of by-products, e.g. slag
    • C21B3/06—Treatment of liquid slag
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/02—Physical or chemical treatment of slags
    • 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
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
    • 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

Abstract

Processing of LD slag (from oxysteel prodn.) is carried out by (a) heating a mixt. of the slag, carbon and a Al2O3 and SiO2-contg. flux to reduce the metal oxides in the slag, and (b) cooling the mixt. to 200 degrees C and separating Fe from the resulting fine powder. The amt. of flux added is such that the CaO/Al2O3/SiO2 compsn. (wt.%) falls within a zone in the phase diagram (at 1350 degrees C) defined by the points (1) 55/3/42, (2) 60/28/12, (3) 70/4/26. On cooling, the mixt. disintegrates spontaneously into fine slag particles and relatively, coarse Fe particles, which are easily sepd. by magnetic sepn. or air sifting. The residual slag slag particles can be reacted with lime to produce Portland cement.
NL7712077A 1977-11-02 1977-11-02 Iron recovery from LD slag - by reducing with carbon in presence of aluminosilicate flux NL7712077A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7712077A NL7712077A (en) 1977-11-02 1977-11-02 Iron recovery from LD slag - by reducing with carbon in presence of aluminosilicate flux

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7712077A NL7712077A (en) 1977-11-02 1977-11-02 Iron recovery from LD slag - by reducing with carbon in presence of aluminosilicate flux

Publications (1)

Publication Number Publication Date
NL7712077A true NL7712077A (en) 1979-05-04

Family

ID=19829469

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7712077A NL7712077A (en) 1977-11-02 1977-11-02 Iron recovery from LD slag - by reducing with carbon in presence of aluminosilicate flux

Country Status (1)

Country Link
NL (1) NL7712077A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5395443A (en) * 1992-07-14 1995-03-07 Pelt & Hooykass B.V. Method for preparing a cement base material, together with a cement composition containing this base material
US6277171B1 (en) 1995-07-31 2001-08-21 Ipcor N.V. Method of reducing the iron content of steel slag
CN107475468A (en) * 2017-08-22 2017-12-15 东北大学 A kind of method of Spinel growth behavior in regulation and control stainless steel slag
CN109020283A (en) * 2018-09-12 2018-12-18 林木和 Electric arc furnace steel slag prepares the treatment process of modified steel scoria micro mist and its modified steel scoria micro mist and concrete of preparation

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5395443A (en) * 1992-07-14 1995-03-07 Pelt & Hooykass B.V. Method for preparing a cement base material, together with a cement composition containing this base material
US6277171B1 (en) 1995-07-31 2001-08-21 Ipcor N.V. Method of reducing the iron content of steel slag
CN107475468A (en) * 2017-08-22 2017-12-15 东北大学 A kind of method of Spinel growth behavior in regulation and control stainless steel slag
CN107475468B (en) * 2017-08-22 2019-03-12 东北大学 A kind of method of Spinel growth behavior in regulation stainless steel slag
CN109020283A (en) * 2018-09-12 2018-12-18 林木和 Electric arc furnace steel slag prepares the treatment process of modified steel scoria micro mist and its modified steel scoria micro mist and concrete of preparation

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Legal Events

Date Code Title Description
A1B A search report has been drawn up
BC A request for examination has been filed
A85 Still pending on 85-01-01
BV The patent application has lapsed