BE839753A - PROCESS FOR THE USE OF METALLURGIC SLAG - Google Patents
PROCESS FOR THE USE OF METALLURGIC SLAGInfo
- Publication number
- BE839753A BE839753A BE6045406A BE6045406A BE839753A BE 839753 A BE839753 A BE 839753A BE 6045406 A BE6045406 A BE 6045406A BE 6045406 A BE6045406 A BE 6045406A BE 839753 A BE839753 A BE 839753A
- Authority
- BE
- Belgium
- Prior art keywords
- slag
- alumina
- added
- carriers
- hand
- Prior art date
Links
- 239000002893 slag Substances 0.000 title claims description 13
- 238000000034 method Methods 0.000 title claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 239000000969 carrier Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000003638 chemical reducing agent Substances 0.000 claims description 2
- 230000004907 flux Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/36—Processes yielding slags of special composition
-
- 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
-
- 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
- C04B5/00—Treatment of metallurgical slag ; Artificial stone from molten metallurgical slag
- C04B5/06—Ingredients, other than water, added to the molten slag or to the granulating medium or before remelting; Treatment with gases or gas generating compounds, e.g. to obtain porous 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
- 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
- C21B3/04—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
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)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
"Procédé pour l'utilisation de scorie métallurgique"
La présente invention se rapporte à un procédé pour l'utilisation
d'une scorie métallurgique, applicable spécialement aux scories basiques
non phosphoreuses provenant de l'élaboration de l'acier.
Les scories métallurgiques produites par l'affinage d'une fonte
non phosphoreuse selon le procédé dans lequel on souffle de l'oxygène industriellement pur dans le convertisseur, ne trouvent actuellement que des
débouchés limités, largement inférieurs aux quantités disponibles.
Ces débouchés sont essentiellement soit l'agronomie où, à cause de sa teneur importante en CaO, cette scorie (en faible quantité) est utilisée pour amender la terre, soit l'addition à la charge du haut fourneau, malgré les frais de broyage et de refusion assez grands qui rendent l'opération économiquement peu intéressante. Le surplus important de scorie non utilisée est en général mis au terril, solution qui présente encore l'inconvénient de nécessiter des dépenses en pure perte, puisque le matériau est considéré comme irrécupérable.
La. présente invention a pour objet un procédé de traitement de ces scories basiques non phosphoreuses provenant de l'élaboration de l'acier, qui permet d'en récupérer la plus grande partie, sinon la quasi totalité.
Le promoteur de la présente invention a déjà préconisé
<EMI ID=1.1>
scorie une composition voisine de celle que l'on rencontre habituellement pour les ciments Portland.
Les porteurs d'alumine et/ou de silice peuvent être ajoutés à
<EMI ID=2.1>
La présente invention a pour objet un procédé permettant d'effectuer une addition d'alumine et/ou de silice sous une forme plus avantageuse que celle de briques réfractaires.
Le procédé, objet de la présente invention, dans lequel on ajoute à la scorie liquide d'une part un réducteur et d'autre part des porteurs d'alumine et/ou de silice, est essentiellement caractérisé en ce qu'au moins une partie des dits porteurs d'alumine est ajoutée sous la forme de fondants, éventuellement au cours de l'élaboration de l'acier elle-même; on profite ainsi à deux reprises de l'effet fondant.
"Process for the use of metallurgical slag"
The present invention relates to a method for using
a metallurgical slag, especially applicable to basic slag
non-phosphorous from the production of steel.
Metallurgical slag produced by refining a cast iron
non-phosphorous according to the process in which industrially pure oxygen is blown into the converter, currently only finds
limited outlets, well below the quantities available.
These outlets are essentially either agronomy where, because of its high CaO content, this slag (in small quantities) is used to amend the soil, or the addition to the load of the blast furnace, despite the costs of grinding and large enough reflow which makes the operation unattractive economically. The large surplus of unused slag is generally put in the heaps, a solution which still has the drawback of requiring wasted expenditure, since the material is considered irrecoverable.
The present invention relates to a process for treating these basic non-phosphorous slags originating from the production of steel, which makes it possible to recover most of them, if not almost all of them.
The promoter of the present invention has already recommended
<EMI ID = 1.1>
slag a composition similar to that usually found for Portland cements.
Alumina and / or silica carriers can be added to
<EMI ID = 2.1>
The present invention relates to a process making it possible to carry out an addition of alumina and / or silica in a more advantageous form than that of refractory bricks.
The process, object of the present invention, in which a reducing agent is added to the liquid slag on the one hand and alumina and / or silica carriers on the other hand, is essentially characterized in that at least a part so-called alumina carriers is added in the form of fluxes, optionally during the production of the steel itself; we thus benefit twice from the melting effect.
Claims (1)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE6045406A BE839753A (en) | 1976-03-18 | 1976-03-18 | PROCESS FOR THE USE OF METALLURGIC SLAG |
| LU75130A LU75130A1 (en) | 1975-06-11 | 1976-06-09 | |
| LU83921A LU83921A1 (en) | 1975-06-11 | 1982-02-03 | METHOD OF USING METALLURGICAL SLAG |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE6045406A BE839753A (en) | 1976-03-18 | 1976-03-18 | PROCESS FOR THE USE OF METALLURGIC SLAG |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE839753A true BE839753A (en) | 1976-07-16 |
Family
ID=3874672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE6045406A BE839753A (en) | 1975-06-11 | 1976-03-18 | PROCESS FOR THE USE OF METALLURGIC SLAG |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE839753A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0121639A1 (en) * | 1983-04-11 | 1984-10-17 | Constantin Dr. Stoica | Recuperation of heat energy from molten slags in cement production |
| FR2610616A1 (en) * | 1987-02-11 | 1988-08-12 | Mendelsohn Natie | Processes and materials for improving the qualities of silico-calcic slags |
-
1976
- 1976-03-18 BE BE6045406A patent/BE839753A/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0121639A1 (en) * | 1983-04-11 | 1984-10-17 | Constantin Dr. Stoica | Recuperation of heat energy from molten slags in cement production |
| FR2610616A1 (en) * | 1987-02-11 | 1988-08-12 | Mendelsohn Natie | Processes and materials for improving the qualities of silico-calcic slags |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RE | Patent lapsed |
Owner name: CENTRE DE RECHERCHES METALLURGIQUES - CENTRUM VOO Effective date: 19880331 |