DE715250C - Process for the production of masonry and shaped bricks from blast furnace slag - Google Patents
Process for the production of masonry and shaped bricks from blast furnace slagInfo
- Publication number
- DE715250C DE715250C DEA91619D DEA0091619D DE715250C DE 715250 C DE715250 C DE 715250C DE A91619 D DEA91619 D DE A91619D DE A0091619 D DEA0091619 D DE A0091619D DE 715250 C DE715250 C DE 715250C
- Authority
- DE
- Germany
- Prior art keywords
- production
- masonry
- blast furnace
- furnace slag
- shaped bricks
- 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
- 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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
-
- 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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
-
- 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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/138—Waste materials; Refuse; Residues from metallurgical processes, e.g. slag, furnace dust, galvanic waste
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3201—Alkali metal oxides or oxide-forming salts thereof
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
-
- 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
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Dispersion Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Processing Of Solid Wastes (AREA)
Description
Verfahren zur Herstellung von Mauer- und Formsteinen aus Hochofenschlacke Es ist bereits vorgeschlagen worden, granulierte Hochofenschlacke mit einem. Zusatz von etwa 2o% Ton durch Pressen und nachherigas Brennen unterhalb der Sintertemperatur zu Mauer- und Formsteinen zu verarbeiten. Das Verfahren hat aber bisher keinen Eingang in die praktische Technik gefunden. Obgleich die so hergestellten Steine günstige Eigenschaften für viele Verwendungszwecke blesitzen, stehen der Durchführung des Herstellungsverfahrens große betriebstechnische Schwierigkeiten entgegen; denn das Verfahren ist von vornherein nur dann wirtschaftlich, wenn man mit großen Schlacken- und geringen Tonanteilen in der Mischung arbeitet. Brei einem solchen mageren Gemisch haben aber die gepreßten Steine eine so niedrige Trockenfestigkeit, daß sie .den mechanischen Beanspruchungen beim Transport von der Presse zum Ofen nicht standhalten. lm Ofen selbst verliert der Ton seine Bildsamkeit und Bindekraft schon weit unterhalb der Temperatur, bei der es zu einer Verfrittung von Schlacke und Tonzusatz kommt. Dadurch wird die Ausbeute an brauchbaren . Steinen noch weiter herabgesetzt.Process for the production of masonry and shaped bricks from blast furnace slag It has already been proposed to use granulated blast furnace slag with a. additive of about 20% clay by pressing and then gas firing below the sintering temperature to be processed into masonry and shaped bricks. However, the procedure has not yet been received found in practical technology. Although the stones produced in this way are cheap Properties for many uses are available for carrying out the Manufacturing process counteracts major operational difficulties; because that The process is only economical from the outset if one works with large slag and small amounts of clay in the mix. Porridge such a meager mixture but the pressed stones have such a low dry strength that they .den cannot withstand mechanical stresses during transport from the press to the furnace. In the furnace itself, the clay loses its plasticity and cohesiveness far below the temperature at which the slag and clay additive build up. This makes the yield usable. Stones lowered even further.
Ein weiterer Vorschlag geht dahin, zur Steinherstellung ein. Gemisch von Schlacke, Glasbruch, Ton, Eisenoxyden, Salpeter und Quarz zu verwenden. Die aus diesem Gemisch gepreßten Steine sollen bei etwa 300° vorgetrocknet und darauf bei etwa 7q.0° fertig gebrannt werden. Abgesehen davon, daß dieses Verfahren umständlich ist und eine Steinherstellung in größerem Maßstab wegen des erfor derlichen hohen Anteiles an Glasbruch in Hütten-,verken gar nicht möglich ist, weisen *die Steine ebenfalls nur eine geringe Trockenfestigkeit mit den oben geschilderten Nachteilen .auf.Another suggestion is for stone making. mixture of slag, broken glass, clay, iron oxides, saltpeter and quartz. the stones pressed from this mixture should be pre-dried at about 300 ° and then put on be fired at about 7q.0 °. Apart from that this procedure is cumbersome is and a stone production on a larger scale because of the neces sary high Share of broken glass in smelter, verken is not possible at all, point * the stones likewise only a low dry strength with the disadvantages outlined above .on.
Durch das Verfahren entsprechend der vorliegenden Erfindung gelingt es, die b schilderteil Mängel zu beseitigen und mit wirtschaftlichem Erfolg einen Schlackenstein - herzustellen, der einem guten Klinker ebenbürtig oder sogar überlegen ist. Erfindungsgemäß wird granulierte Hochofenschlacke und Ton. im Verhältnis von 5: i bis 2o: i unter Zusatz ` von geringen Alkalimengen (etwa a bis 50/(y vom Tonzusatz) und einem entsprechenden Wasserzusatz innigst gemischt, zu Steinen verpreßt und bis zur Verklinkerung der Steine .gebrannt. Als Alk.alizusatz kann beispielsweise Soda verwendet werden. Es hat sich bezeigt, daß .der genannte niedrige Alkalizusatz auch bei einem geringen Tongehalt der Mischung ausreicht, um dem Steineine genügend große Trockenfestigkeit zu geben, die seine betriebsmäßige Herstellung erst ermöglicht. Offenbar werden durch die Alkalien in der Schlacke hydraulische Eigenschaften geweckt, die zu einer schnellen Verfestigung der Mischung in den verpreßten Steinen führen. Oh#gleich die Steine bis zur Verklinkerwig gebrannt werden, bleiben sie im Ofen pralktisch völlig raumbeständig, so daß man auch schwierigere Formen, wie Hohlsteine und 'Tsi:.rch,eln, ohne Vemiehungen herstellen kann.The method according to the present invention succeeds it, the b sign part Eliminate defects and with economic Success a cinder block - to manufacture that is equal to or equal to a good clinker brick is even superior. According to the invention, granulated blast furnace slag and clay are used. in a ratio of 5: 1 to 2o: 1 with the addition of small amounts of alkali (approx a to 50 / (y from the addition of clay) and a corresponding addition of water, intimately mixed, pressed into stones and fired until the stones clinker. As an alkali additive For example, soda can be used. It has been shown that the said low alkali addition is sufficient even with a low clay content of the mixture, in order to give the stone a sufficiently high dry strength that its operational Production made possible in the first place. Apparently due to the alkalis in the slag hydraulic properties aroused that lead to a rapid solidification of the mixture lead in the pressed stones. Oh # the stones burned right up to the brickwork they remain practically completely stable in the oven, so that you can also work on more difficult ones Shapes such as hollow stones and 'Tsi: .rch, eln, can be made without sacrifices.
Die Steine besitzen eine Druckfestiglkeitvolj über 8oo kg/cm° und nehmen nur .sehr wenig Wasser .auf. Sie sind deshalb der geeignete Baustoff für mechanisch hochbeanspru,chtc heller- und Fundamentbauten.The stones have a Druckfestiglkeitvolj over 8oo kg / cm ° and take up very little water. They are therefore the most suitable building material for mechanically highly stressed, chtc lighter and foundation structures.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA91619D DE715250C (en) | 1940-07-02 | 1940-07-02 | Process for the production of masonry and shaped bricks from blast furnace slag |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA91619D DE715250C (en) | 1940-07-02 | 1940-07-02 | Process for the production of masonry and shaped bricks from blast furnace slag |
Publications (1)
Publication Number | Publication Date |
---|---|
DE715250C true DE715250C (en) | 1941-12-17 |
Family
ID=6951018
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEA91619D Expired DE715250C (en) | 1940-07-02 | 1940-07-02 | Process for the production of masonry and shaped bricks from blast furnace slag |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE715250C (en) |
-
1940
- 1940-07-02 DE DEA91619D patent/DE715250C/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE715250C (en) | Process for the production of masonry and shaped bricks from blast furnace slag | |
DE3722242C1 (en) | Process for the production of ceramic products | |
DE586332C (en) | Process for the production of shaped bricks from fly ash | |
DE449267C (en) | Process for the production of building blocks | |
DE421071C (en) | Production of porous bodies, especially for building purposes, as insulating bodies from residues or waste from coal processing | |
EP0365022B1 (en) | Process for the production of artificial stones | |
DE2133469C3 (en) | Semi-rigid refractory insulating material and process for its manufacture | |
DE349726C (en) | Process for the production of AEtzkalk, in particular for the production of a mortar former from Muell u. like | |
DE881627C (en) | Process for the production of calcined quartz artificial stones and refractory masses | |
DE535605C (en) | Process for the manufacture of refractory bricks | |
DE933977C (en) | Highly refractory stones and masses made of quartz material | |
AT113330B (en) | Process for the production of ceramic products from alkali-free magnesium silicates. | |
DE342615C (en) | ||
DE802142C (en) | Production of an acid-free, nailable artificial stone mass | |
DE934280C (en) | Process for the production of refractory masses and stones containing silica | |
DE1646755C (en) | Process for the production of refractory barium-calcium-alumina cements | |
SU393231A1 (en) | RAW MIXTURE FOR CEMENT | |
DE457621C (en) | Process for the production of special cement with high initial strength | |
DE500139C (en) | Process for the production of hydraulic binders | |
DE601420C (en) | Process for the production of lime-rich binders similar to Portland cement | |
DE595643C (en) | Process for the manufacture of ceramic products | |
DE867072C (en) | Process for the production of refractory bricks and steam masses from sintered dolomite | |
DE2114017A1 (en) | Brick compsn contg electrofilter ash fromboi | |
DE908713C (en) | Process for the production of temperature-resistant, highly porous heat insulating bricks | |
DE813676C (en) | Process for making refractory bricks |