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 slagInfo
- 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
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.
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)
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 |
-
1977
- 1977-10-28 FR FR7733477A patent/FR2370408A7/en not_active Expired
- 1977-11-04 LU LU78458A patent/LU78458A1/xx unknown
Cited By (2)
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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