FR2370408A7 - Basic steel-making slag mixed by fly ash - produces hydraulic setting properties which increase commercial value of slag - Google Patents

Basic steel-making slag mixed by fly ash - produces hydraulic setting properties which increase commercial value of slag

Info

Publication number
FR2370408A7
FR2370408A7 FR7733477A FR7733477A FR2370408A7 FR 2370408 A7 FR2370408 A7 FR 2370408A7 FR 7733477 A FR7733477 A FR 7733477A FR 7733477 A FR7733477 A FR 7733477A FR 2370408 A7 FR2370408 A7 FR 2370408A7
Authority
FR
France
Prior art keywords
fly ash
slag
pref
hydraulic setting
setting properties
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
FR7733477A
Other languages
French (fr)
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.)
Centre de Recherches Metallurgiques CRM ASBL
Original Assignee
Centre de Recherches Metallurgiques CRM ASBL
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 Centre de Recherches Metallurgiques CRM ASBL filed Critical Centre de Recherches Metallurgiques CRM ASBL
Application granted granted Critical
Publication of FR2370408A7 publication Critical patent/FR2370408A7/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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
    • 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
    • C21B2400/022—Methods of cooling or quenching molten slag
    • C21B2400/024—Methods of cooling or quenching molten slag with the direct use of steam or liquid coolants, e.g. water
    • 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
    • C21B2400/022—Methods of cooling or quenching molten slag
    • C21B2400/026—Methods of cooling or quenching molten slag using air, inert gases or removable conductive bodies
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Metallurgy (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

The fly ash is added to the molten slag and the mixt. is rapidly cooled or quenched, pref. with granulation. The fly ash is pref. added as a suspension in a fluid together with a gaseous agent reducing the major part of the iron and manganese oxides to metals. The reducing gas is pref. added via two coaxial pipes forming a tuyere, the inner pipe providing O2 and the outer pipe a reducing gas so the combined gas mixt. is reducing. Used e.g. to treat basic slags obtd. in the oxygen refining of haematite iron. By adding fly ash to the molten slag before quenching, the resulting granulate exhibits hydraulic setting properties so it can be used as a type of Portland cement.
FR7733477A 1976-11-05 1977-10-28 Basic steel-making slag mixed by fly ash - produces hydraulic setting properties which increase commercial value of slag Expired FR2370408A7 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE848077 1976-11-05

Publications (1)

Publication Number Publication Date
FR2370408A7 true FR2370408A7 (en) 1978-06-02

Family

ID=3861440

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7733477A Expired FR2370408A7 (en) 1976-11-05 1977-10-28 Basic steel-making slag mixed by fly ash - produces hydraulic setting properties which increase commercial value of slag

Country Status (2)

Country Link
FR (1) FR2370408A7 (en)
LU (1) LU78458A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2370006A1 (en) * 1976-11-05 1978-06-02 Nederlandse Cement Ind METHOD OF USING A SLAG FROM THE PRODUCTION OF OXYGEN STEEL
EP0121639A1 (en) * 1983-04-11 1984-10-17 Constantin Dr. Stoica Recuperation of heat energy from molten slags in cement production

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2370006A1 (en) * 1976-11-05 1978-06-02 Nederlandse Cement Ind METHOD OF USING A SLAG FROM THE PRODUCTION OF OXYGEN STEEL
EP0121639A1 (en) * 1983-04-11 1984-10-17 Constantin Dr. Stoica Recuperation of heat energy from molten slags in cement production

Also Published As

Publication number Publication date
LU78458A1 (en) 1978-03-14

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