WO1998030512A1 - Inorganic binder - Google Patents

Inorganic binder Download PDF

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Publication number
WO1998030512A1
WO1998030512A1 PCT/EP1998/000042 EP9800042W WO9830512A1 WO 1998030512 A1 WO1998030512 A1 WO 1998030512A1 EP 9800042 W EP9800042 W EP 9800042W WO 9830512 A1 WO9830512 A1 WO 9830512A1
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WO
WIPO (PCT)
Prior art keywords
binder according
binder
esp
production
marl
Prior art date
Application number
PCT/EP1998/000042
Other languages
German (de)
French (fr)
Inventor
Jürgen KEPPNER
Alfred Lehnen
Original Assignee
Deutsche Rockwool Mineralwoll-Gmbh
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 Deutsche Rockwool Mineralwoll-Gmbh filed Critical Deutsche Rockwool Mineralwoll-Gmbh
Priority to AU57657/98A priority Critical patent/AU5765798A/en
Publication of WO1998030512A1 publication Critical patent/WO1998030512A1/en

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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
    • C04B7/32—Aluminous cements
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
    • C03C1/02—Pretreated ingredients
    • C03C1/026—Pelletisation or prereacting of powdered raw materials
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C13/00—Fibre or filament compositions
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C13/00—Fibre or filament compositions
    • C03C13/06—Mineral fibres, e.g. slag wool, mineral wool, rock wool
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2213/00—Glass fibres or filaments
    • C03C2213/02—Biodegradable glass fibres

Definitions

  • the invention relates to a binder for the production, in particular solidification, of shaped bodies which serve as a raw material for the production of artificial mineral fibers.
  • artificial mineral fibers for example fiber insulation materials for sound and heat insulation
  • natural or artificial rock is used as starting products.
  • This rock is melted in an oven and then fed as a melt to a fiberizing device, so that the melt can be deposited in the form of fibers on a conveyor belt, which conveyor belt feeds the fibers to various processing stations, such as compression stations, cutting stations or the like.
  • the fibers are placed on the conveyor belt in such a way that, for example, an endless mineral fiber mat is created.
  • stones are used as primary raw materials, with artificial stones being increasingly used, which are produced from production residues and / or recycling products. For this, the production backlogs and / or recycling backlogs are processed, i.e. crushed and shaped as artificial stones.
  • binders for example a mixture of calcined bauxite and cement being mixed to produce secondary raw materials from recycled materials. to shape cling processes as well as internal production residues in a pelletizing process to artificial stones.
  • this known binder is particularly well suited for pelleting processes, it is not particularly suitable for briquetting processes which are intended in particular in the production of artificial stones of larger dimensions.
  • the invention is based on the objective of creating a generic binder which is suitable both for pelleting and for briquetting molded bodies which serve as a melt raw material for the production of synthetic mineral fibers.
  • the binder i.a. consists of raw bauxite and marl sintered in a furnace, preferably a shaft or rotary tube furnace and then ground, as starting materials.
  • Such a binder has the advantage that the mixture of raw bauxite and marl enables the briquetting of raw materials and residues for the manufacturing process of mineral wool production. Residues are both internal production residues and external residues, so-called secondary raw materials, which are generated by recycling dismantled mineral fibers.
  • the raw material base for the binder according to the invention are bauxite, clays, other alumina carriers, lime, dolomite, marl and white tere suitable secondary raw materials are provided.
  • the advantages of this binder according to the invention are in particular the reduction in the use of briquettes, the substitution of the cement by up to 100% with this binder and the partial substitution of the calcined bauxite by more than 40%.
  • the binder according to the invention has the advantage that emissions of S0 2 and H 2 S are significantly reduced both in its manufacture and in its intended use, so that the costs for the desulfurization of the exhaust gases produced in this process can also be significantly reduced.
  • This binder is particularly suitable for bio-lent fibers which are advantageous in terms of their further processing in the melting process described at the beginning and their processing on construction sites with regard to substances which are hazardous to health.
  • the production of the artificial stones with the binder according to the invention is considerably more economical than the previous procedures.
  • the binder according to the invention is suitable for processing residual materials from steelworks, foundries, glass factories, thermal power plants and / or garbage incineration plants.
  • the bauxite and marl have Starting materials have a BLAINE value of more than 3000 cm 2 / g after they have been ground. This BLAINE value has been shown to be advantageous for the briquetting of the moldings, the cement used in the prior art being able to be completely replaced and the calcined bauxite used being partially replaced.
  • the ratio A1 2 0 3 to CaO is in the range between 0.5 and 1.8, preferably between 0.8 and 1.65.
  • the melting point of the binder is preferably about 1,300 ° C.
  • Ti0 2 0.1 - 4 preferably ⁇ 3
  • MgO 0 - 5 preferably ⁇ 4
  • this binder is particularly suitable for briquette-shaped articles.
  • the shaped bodies are preferably formed from raw materials and / or residues for the production process of mineral wool production, the residues being designed in particular as recycling stocks.
  • the binder according to the invention is characterized in particular by its high A1 2 0 3 content.
  • the result of an X-ray diffractometric phase examination of the binder according to the invention is shown in the table below.
  • the phase distribution of the binder in silicate chemical notation shows a CA portion that is mainly responsible for the rapid hydration, which is twice as high as that of the known binders.
  • CA 2 responsible for slow hydration.
  • all other identified phases recede quantitatively. Brown millerite and pleochroit are no longer detectable in the binder according to the invention.
  • REPLACEMENT BLADE (RULE 26) with approximately the same position of the maximum in the rough range, a shift of the maximum in the fine range to higher values for the binder according to the invention.
  • a maximum limit of 8% residue on a 0.09 mm screen fabric is reached with a measured residue of 0.2%.
  • FIG. 1 The grain size analysis of the binder according to the invention in comparison with a known binder and Portland cement is shown in FIG. 1, the solid line representing the particle size distribution in the binder according to the invention, the dashed line representing a known binder and the dotted line Portland cement.
  • FIG. 2 shows the grain size analysis according to FIG. 1 as a bar chart for the binder according to the invention.
  • the binder according to the invention is particularly suitable for the production of moldings in the course of a briquetting process.
  • the composition of the binder according to the invention means that a higher degree of stiffness can be achieved after a shorter time than known binders or Portland cement. This behavior is of particular advantage for the production of shaped stones in the field of mineral wool production.

Abstract

The invention concerns a binder for preparing, in particular hardening, moulded bodies which are used as melt raw material for producing synthetic mineral fibres. According to the invention, in order to produce a binder of this type which is suitable both for pelletizing and briquetting moulded bodies used as melt raw material for producing synthetic mineral fibres, the binder consists of marl and crude bauxite which is sintered in a furnace, preferably a shaft or rotary tubular kiln, and then ground.

Description

ANORGANISCHES BINDEMITTELINORGANIC BINDING AGENT
Die Erfindung betrifft ein Bindemittel für die Herstellung, insbesondere Verfestigung von Formkor- pern, die als Schmelzrohstoff zur Erzeugung von künstlichen Mineralfasern dienen.The invention relates to a binder for the production, in particular solidification, of shaped bodies which serve as a raw material for the production of artificial mineral fibers.
Bei der Erzeugung von kunstlichen Mineralfasern, beispielsweise Faserdammstoffen zur Schall- und Wärmedämmung ist es üblich, als Ausgangsprodukte Gestein in naturlicher oder Kunstform zu verwenden. Dieses Gestein wird in einem Ofen aufgeschmolzen und anschließend als Schmelze einem Zerfaserungsge- rat zugeführt, sodaß die Schmelze in Form von Fasern auf einem Forderband ablegbar ist, welches Forderband die Fasern verschiedenen Verarbeitungs- Stationen, wie Verdichtungsstationen, Schneidstation oder dergleichen zufuhrt. Die Fasern werden derart auf dem Förderband abgelegt, daß beispielsweise eine endlose Mineralfasermatte entsteht. Wie bereits ausgeführt, werden als Primarrohstoffe Ge- steine verwendet, wobei in zunehmendem Maße Kunststeine Verwendung finden, die aus Produktionsruck- standen und / oder Recyclingprodukten hergestellt werden. Hierzu werden die Produktionsruckstande und / oder Recyclingruckstande aufgearbeitet, d.h. zer- kleinert und als Kunststeine geformt.In the production of artificial mineral fibers, for example fiber insulation materials for sound and heat insulation, it is common to use natural or artificial rock as starting products. This rock is melted in an oven and then fed as a melt to a fiberizing device, so that the melt can be deposited in the form of fibers on a conveyor belt, which conveyor belt feeds the fibers to various processing stations, such as compression stations, cutting stations or the like. The fibers are placed on the conveyor belt in such a way that, for example, an endless mineral fiber mat is created. As already stated, stones are used as primary raw materials, with artificial stones being increasingly used, which are produced from production residues and / or recycling products. For this, the production backlogs and / or recycling backlogs are processed, i.e. crushed and shaped as artificial stones.
Um die Fasern miteinander zu verbinden ist es üblich, Bindemittel zu verwenden, wobei beispielsweise eine Mischung aus calzmiertem Bauxit mit Zement vermischt wird, um Sekundar-Rohstoffe aus Recy- clingprozessen als auch interne Produktionsreststoffe in einem Pelletiervorgang zu Kunststeinen zu formen. Dieser vorbekannte Binder eignet sich zwar besonders gut für Pelletiervorgange, ist jedoch für Brikettiervorgange, die insbesondere bei der Herstellung von Kunststeinen größerer Ausmaße vorgesehen sind, nicht besonders gut geeignet.In order to bond the fibers to one another, it is customary to use binders, for example a mixture of calcined bauxite and cement being mixed to produce secondary raw materials from recycled materials. to shape cling processes as well as internal production residues in a pelletizing process to artificial stones. Although this known binder is particularly well suited for pelleting processes, it is not particularly suitable for briquetting processes which are intended in particular in the production of artificial stones of larger dimensions.
Ausgehend von diesem Stand der Technik liegt der Erfindung die A u f g a b e zugrunde, ein gat- tungsgemaßes Bindemittel zu schaffen, welches sowohl beim Pelletieren als auch beim Brikettieren von Formkorpern geeignet ist, die als Schmelzrohstoff zur Herstellung von kunstlichen Mineralfasern dienen.Starting from this prior art, the invention is based on the objective of creating a generic binder which is suitable both for pelleting and for briquetting molded bodies which serve as a melt raw material for the production of synthetic mineral fibers.
Die L o s u n g dieser Aufgabenstellung sieht vor, daß das Bindemittel u.a. aus in einem Ofen, vorzugsweise Schacht- oder Drehrohrofen gesintertem und anschließend aufgemahlenem Rohbauxit und Mergel als Ausgangsstoffe besteht.The solution to this task provides that the binder i.a. consists of raw bauxite and marl sintered in a furnace, preferably a shaft or rotary tube furnace and then ground, as starting materials.
Ein derartiges Bindemittel hat den Vorteil, daß die Mischung aus Rohbauxit und Mergel die Brikettierung von Roh- und Reststoffen für den Fertigungsprozeß der Mineralwolleherstellung ermöglicht. Reststoffe sind dabei sowohl interne Produktionsreststoffe als auch externe Reststoffe, sogenannte Sekundärrohstoffe, die durch Recycling ruckgebauter Mineralfasern anfallen. Als Rohstoffbasis für den erfin- dungsgemaßen Binder sind Bauxite, Tonerden, sonstige Tonerdetrager, Kalk, Dolomit, Mergel sowie wei- tere geeignete Sekundärrohstoffe vorgesehen. Die Vorteile dieses erfmdungsgemaßen Binders liegen insbesondere in der Reduzierung des Briketteinsatzes, in der Substitution des Zementes bis zu 100% durch diesen Binder sowie in der Teilsubstitution des calzinierten Bauxits zu mehr als 40%. Weiterhin hat der erfmdungsgemaße Binder den Vorteil, daß sowohl bei seiner Herstellung als auch bei seiner bestimmungsgemaßen Verwendung Emissionen von S02 und H2S wesentlich reduziert werden, sodaß auch die Kosten für die Entschwefelung der bei diesem Prozeß entstehenden Abgase wesentlich reduziert werden können .Such a binder has the advantage that the mixture of raw bauxite and marl enables the briquetting of raw materials and residues for the manufacturing process of mineral wool production. Residues are both internal production residues and external residues, so-called secondary raw materials, which are generated by recycling dismantled mineral fibers. The raw material base for the binder according to the invention are bauxite, clays, other alumina carriers, lime, dolomite, marl and white tere suitable secondary raw materials are provided. The advantages of this binder according to the invention are in particular the reduction in the use of briquettes, the substitution of the cement by up to 100% with this binder and the partial substitution of the calcined bauxite by more than 40%. Furthermore, the binder according to the invention has the advantage that emissions of S0 2 and H 2 S are significantly reduced both in its manufacture and in its intended use, so that the costs for the desulfurization of the exhaust gases produced in this process can also be significantly reduced.
Insbesondere eignet sich dieser Binder für biolos- liehe Fasern, die hinsichtlich ihrer Weiterverarbeitung im eingangs dargestellten Schmelzprozeß und ihrer Verarbeitung auf den Baustellen vorteilhaft in Bezug auf gesundheitsgefahrdende Stoffe sind. Daruberhmaus ist die Herstellung der Kunststeine mit dem erfmdungsgemaßen Bindemittel wesentlich wirtschaftlicher als die bisherigen Vorgehensweisen.This binder is particularly suitable for bio-lent fibers which are advantageous in terms of their further processing in the melting process described at the beginning and their processing on construction sites with regard to substances which are hazardous to health. In addition, the production of the artificial stones with the binder according to the invention is considerably more economical than the previous procedures.
Es hat sich weiterhin als vorteilhaft erwiesen, daß das erfmdungsgemaße Bindemittel zur Verarbeitung von Restwertstoffen aus Stahlwerken, Gießereien, Glasfabriken, thermischen Kraftwerken und / oder Mullverbrennungsanlagen geeignet ist.It has also proven to be advantageous that the binder according to the invention is suitable for processing residual materials from steelworks, foundries, glass factories, thermal power plants and / or garbage incineration plants.
Nach einem weiteren Merkmal der Erfindung ist vorgesehen, daß die Rohbauxit und Mergel aufweisenden Ausgangsstoffe nach ihrem Aufmahlen einen BLAINE- Wert von mehr als 3000 cm2/g aufweisen. Dieser BLAINE-Wert hat sich als vorteilhaft für die Brikettierung der Formkörper gezeigt, wobei sich der im Stand der Technik eingesetzte Zement vollständig und das eingesetzte calzinierte Bauxit partiell ersetzen läßt.According to a further feature of the invention it is provided that the bauxite and marl have Starting materials have a BLAINE value of more than 3000 cm 2 / g after they have been ground. This BLAINE value has been shown to be advantageous for the briquetting of the moldings, the cement used in the prior art being able to be completely replaced and the calcined bauxite used being partially replaced.
Es ist ferner vorgesehen, daß das Verhältnis A1203 zu CaO im Bereich zwischen 0,5 und 1,8, vorzugswei- se zwischen 0,8 und 1,65 liegt.It is further provided that the ratio A1 2 0 3 to CaO is in the range between 0.5 and 1.8, preferably between 0.8 and 1.65.
Der Schmelzpunkt des Bindemittels liegt vorzugsweise bei ca. 1.300°C.The melting point of the binder is preferably about 1,300 ° C.
Die folgende Tabelle zeigt eine bevorzugte Zusammensetzung der Bestandteile des Bindemittels in Ge- ichtsprozenten:The following table shows a preferred composition of the constituents of the binder in percentages by weight:
Kalkstein oder Robauxit 40 - - 60Limestone or Robauxite 40 - - 60
SiO, 3 - 10 vorzugsweise 6 - 10SiO, 3 - 10 preferably 6 - 10
A1203 50 - - 70 vorzugsweise 52 - - 60A1 2 0 3 50 - - 70 preferably 52 - - 60
Ti02 0,1 - 4 vorzugsweise < 3Ti0 2 0.1 - 4 preferably <3
Fe,03 0,1 - 30 vorzugsweise < 12Fe, 0 3 0.1 - 30 preferably <12
CaO 1 - 51 vorzugsweise 30 - - 40CaO 1-51 preferably 30-40
MgO 0 - 5 vorzugsweise < 4MgO 0 - 5 preferably <4
K20 0 - 1K 2 0 0 - 1
Na20 0 - 1Na 2 0 0 - 1
ERSATZBLAπ(REGEL 26) Wie bereits ausgeführt eignet sich dieses Bindemittel insbesondere für brikettförmige Formkörper.REPLACEMENT BLAπ (RULE 26) As already stated, this binder is particularly suitable for briquette-shaped articles.
Vorzugsweise sind die Formkörper aus Roh- und / oder Reststoffen für den Fertigungsprozeß der Mineralwolleherstellung ausgebildet, wobei die Reststoffe insbesondere auch als Recyclingbestände ausgebildet sind.The shaped bodies are preferably formed from raw materials and / or residues for the production process of mineral wool production, the residues being designed in particular as recycling stocks.
Ein besonders vorteilhaftes Bindemittel weist folgende Zusammensetzung auf:A particularly advantageous binder has the following composition:
Si02 7,54 Gew%Si0 2 7.54% by weight
A1203 52, 66 Gew% Ti02 2, 13 Gew%A1 2 0 3 52, 66% by weight Ti0 2 2, 13% by weight
Fe203 3,43 Gew%Fe 2 0 3 3.43% by weight
CaO 32,70 Gew%CaO 32.70% by weight
MgO 0,34 Gew%MgO 0.34% by weight
K20 <0,05 Gew% Na20 <0,05 Gew%K 2 0 <0.05% by weight Na 2 0 <0.05% by weight
So3 0,36 Gew%So 3 0.36% by weight
Summe 99, 16 Gew%Total 99, 16% by weight
Das erfindungsgemäße Bindemittel zeichnet sich ins- besondere durch seinen hohen Gehalt an A1203. Eine röntgendiffraktometrische Phasenuntersuchung des erfindungsgemäßen Bindemittels ist im Ergebnis in der nachfolgenden Tabelle dargestellt. The binder according to the invention is characterized in particular by its high A1 2 0 3 content. The result of an X-ray diffractometric phase examination of the binder according to the invention is shown in the table below.
Figure imgf000008_0001
Figure imgf000008_0001
Die Phasenverteilung des Bindemittels in silikatchemischer Schreibweise zeigt einen für die schnelle Hydratation hauptverantwortlichen CA-Anteil, der gegenüber den bekannten Bindemitteln um das Doppelte höher liegt. Hinzu tritt mit deutlichem Anteil das für eine langsame Hydratation zuständige CA2. Ein Anstieg der Hydratation ist für die Gehlenit- phase zu verzeichnen, die kein nennenswertes hydraulisches Erhärtungsvermögen hat. Neben den drei Hauptphasen CA, CA2 und C2AS (nach SOLACOLU- Definition) treten alle anderen identifizierten Phasen quantitativ zurück. Brownmillerit und Pleochroit sind bei dem erfindungsgemäßen Bindemittel nicht mehr feststellbar.The phase distribution of the binder in silicate chemical notation shows a CA portion that is mainly responsible for the rapid hydration, which is twice as high as that of the known binders. In addition, there is a significant proportion of the CA 2 responsible for slow hydration. There is an increase in hydration for the Gehlenite phase, which has no notable hydraulic hardening capacity. In addition to the three main phases CA, CA 2 and C 2 AS (according to the SOLACOLU definition), all other identified phases recede quantitatively. Brown millerite and pleochroit are no longer detectable in the binder according to the invention.
Bei einer lasergranulometrischen Körnungsanalyse des erfindungsgemäßen Bindemittels kann festge¬ stellt werden, daß gegenüber bekannten Bindemitteln eine sehr geringe Mahlfeinheit vorhanden ist. Ein Vergleich der Dichteverteilung des erfindungsgemäßen Bindemittels mit bekannten Bindemitteln zeigtIn a lasergranulometrischen grain size analysis of the inventive binder Festge ¬ can be assumed that over known binders a very small fineness is present. A comparison of the density distribution of the binder according to the invention with known binders shows
ERSATZBLÄIT(REGEL26) bei annähernd gleicher Lage des Maximums im Grobbereich eine Verschiebung des Maximums im Feinbereich zu höheren Werten für das erfindungsgemäße Bindemittel. Ein maximaler Grenzwert von 8% Rückstand auf einem 0, 09-mm-Siebgewebe wird mit einem gemessenen Rückstand von 0,2% erreicht.REPLACEMENT BLADE (RULE 26) with approximately the same position of the maximum in the rough range, a shift of the maximum in the fine range to higher values for the binder according to the invention. A maximum limit of 8% residue on a 0.09 mm screen fabric is reached with a measured residue of 0.2%.
Die Korngrößenanalyse des erfindungsgemäßen Bindemittels im Vergleich zu einem bekannten Bindemittel und zu Portlandzement ist in Figur 1 dargestellt, wobei die durchgezogene Linie die Teilchengrößenverteilung beim erfindungsgemäßen Bindemittel, die gestrichelte Linie eine bekanntes Bindemittel und die punktierte Linie Portlandzement darstellt.The grain size analysis of the binder according to the invention in comparison with a known binder and Portland cement is shown in FIG. 1, the solid line representing the particle size distribution in the binder according to the invention, the dashed line representing a known binder and the dotted line Portland cement.
In Figur 2 ist die Korngrößenanalyse nach Figur 1 als Säulendiagramm für das erfindungsgemäße Bindemittel dargestellt.FIG. 2 shows the grain size analysis according to FIG. 1 as a bar chart for the binder according to the invention.
Das erfindungsgemäße Bindemittel eignet sich insbesondere für die Herstellung von Formkörpern im Zuge eines Brikettiervorgangs. Die Zusammensetzung des erfindungsgemäßen Bindemittels führt dazu, daß gegenüber bekannten Bindemitteln bzw. gegenüber Port- landzement ein höherer Steifegrad nach kürzerer Zeit erzielbar ist. Dieses Verhalten ist für die Herstellung von Formsteinen im Bereich der Mineralwolleherstellung von besonderem Vorteil. The binder according to the invention is particularly suitable for the production of moldings in the course of a briquetting process. The composition of the binder according to the invention means that a higher degree of stiffness can be achieved after a shorter time than known binders or Portland cement. This behavior is of particular advantage for the production of shaped stones in the field of mineral wool production.

Claims

Ansprüche Expectations
1. Bindemittel für die Herstellung, insbesondere Verfestigung von Formkörpern, die als Schmelz- rohstoff zur Erzeugung von künstlichen Mineralfasern dienen, u.a. bestehend aus in einem Ofen, vorzugsweise Schacht- oder Drehrohrofen gesintertem und anschließend aufgemahlenem Bauxit und Mergel als Ausgangsstoffe1. Binder for the production, in particular solidification of moldings, which serve as a melt raw material for the production of artificial mineral fibers, i.a. consisting of bauxite and marl sintered in a furnace, preferably shaft or rotary tube furnace and then ground, as starting materials
2. Bindemittel nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t, daß die Rohbauxit und Mergel aufweisenden Ausgangsstoffe nach ihrem Aufmahlen einen BLAINE- Wert > 3000 cm2/g aufweisen.2. Binder according to claim 1, characterized in that the raw materials containing marl and marl have a BLAINE value> 3000 cm 2 / g after grinding.
3. Bindemittel nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t, daß als weitere Bestandteile Tonerden, Tonerdeträger, Kalk und / oder Dolomit enthalten sind.3. Binder according to claim 1, d a d u r c h g e k e n n z e i c h n e t that clays, alumina carriers, lime and / or dolomite are contained as further constituents.
4. Bindemittel nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t, daß das Verhältnis Al.O. zu CaO im Bereich zwischen 0,5 und 1,8, vorzugsweise zwischen 0,8 und 1, 65 liegt .4. Binder according to claim 1, d a d u r c h g e k e n n z e i c h n e t that the ratio Al.O. to CaO is in the range between 0.5 and 1.8, preferably between 0.8 and 1.65.
5. Bindemittel nach Anspruch 1, g e k e n n z e i c h n e t d u r c h einen Schmelzpunkt von 1300°C.5. Binder according to claim 1, g e k e n n z e i c h n e t d u r c h a melting point of 1300 ° C.
6. Bindemittel nach Anspruch 1, g e k e n n z e i c h n e t d u r c h folgende Zusammensetzung in Gewichtsprozent:6. Binder according to claim 1, characterized by the following composition in percent by weight:
Kalkstein 40 - - 60 oder RobauxitLimestone 40 - - 60 or robauxite
Si02 3 - 10 vorzugsw . 6 - 10 insbes . 7,54Si0 2 3 - 10 preferably 6 - 10 esp. 7.54
A1--0-- 50 - - 70 vorzugsw . 52 - 60 insbes . 52,66A1--0-- 50 - - 70 preferably 52 - 60 esp. 52.66
Ti02 0,1 - 4 vorzugsw. < 3 insbes . 2,13Ti0 2 0.1 - 4 preferably <3 esp. 2.13
Fe203 0,1 - 30 vorzugsw. < 12 insbes . 3,43Fe 2 0 3 0.1 - 30 preferably <12 esp. 3.43
CaO 1 - 51 vorzugsw . 30 - 40 insbes . 32,CaO 1 - 51 preferably 30 - 40 esp. 32,
77
MgO 0 - 5 vorzugsw. < 4 insbes . 0,34MgO 0 - 5 preferably <4 esp. 0.34
K20 0 - 1K 2 0 0 - 1
Na20 0 - 1Na 2 0 0 - 1
Mn304 < o, 5 vorzugsw. 0Mn 3 0 4 <0.5, preferably 0
S03 < o, 5 vorzugsw . 0S0 3 <o, 5 preferably 0
Chloride < o, 01Chlorides <01.01
Fluoride < o, 01Fluoride <01.01
Bindemittel nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t, daß die Formkörper brikettförmig ausgebildet sind.Binder according to claim 1, d a d u r c h g e k e n n z e i c h n e t that the moldings are briquette-shaped.
8. Bindemittel nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t, daß die Formkörper aus Roh- und / oder Reststoffen für den Fertigungsprozeß der Mineral-8. Binder according to claim 1, d a d u r c h g e k e n n z e i c h n e t that the molded body from raw and / or residues for the manufacturing process of mineral
IRSATZBLATT (REGEL 26) wolleherstellung ausgebildet sind.IRSATZBLATT (RULE 26) wool production are trained.
9. Bindemittel nach Anspruch 9, d a d u r c h g e k e n n z e i c h n e t, daß die Reststoffe als Recyclingbestände ausgebildet sind. 9. Binder according to claim 9, d a d u r c h g e k e n n z e i c h n e t that the residues are designed as recycling stocks.
PCT/EP1998/000042 1997-01-11 1998-01-07 Inorganic binder WO1998030512A1 (en)

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AU57657/98A AU5765798A (en) 1997-01-11 1998-01-07 Inorganic binder

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DE19700744.9 1997-01-11
DE19700744 1997-01-11

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WO2000076929A1 (en) * 1999-06-10 2000-12-21 Rockwool International A/S Briquettes, their use in mineral fibre production and their production

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GB233698A (en) * 1924-05-06 1926-06-17 Urbain Bellony Voisin Process for the manufacture of an aluminous cement of high initial strength
US3194673A (en) * 1961-08-29 1965-07-13 Licencia Talalmanyokat Hydraulic cement and process for making same
US3257219A (en) * 1962-11-01 1966-06-21 Klein Alexander High-alumina cement
CA1132759A (en) * 1979-05-30 1982-10-05 Ivan A. Semchenko Source mixture for the manufacture of cement clinker
JPH01192743A (en) * 1988-01-27 1989-08-02 Nippon Steel Chem Co Ltd Production of briquette and rock wool
EP0819660A1 (en) * 1996-07-17 1998-01-21 ITALCEMENTI S.p.A. Quick-setting cement containing clinker based on calcium fluoro-aluminate mixed with lime

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Publication number Priority date Publication date Assignee Title
GB233698A (en) * 1924-05-06 1926-06-17 Urbain Bellony Voisin Process for the manufacture of an aluminous cement of high initial strength
US3194673A (en) * 1961-08-29 1965-07-13 Licencia Talalmanyokat Hydraulic cement and process for making same
US3257219A (en) * 1962-11-01 1966-06-21 Klein Alexander High-alumina cement
CA1132759A (en) * 1979-05-30 1982-10-05 Ivan A. Semchenko Source mixture for the manufacture of cement clinker
JPH01192743A (en) * 1988-01-27 1989-08-02 Nippon Steel Chem Co Ltd Production of briquette and rock wool
EP0819660A1 (en) * 1996-07-17 1998-01-21 ITALCEMENTI S.p.A. Quick-setting cement containing clinker based on calcium fluoro-aluminate mixed with lime

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PATENT ABSTRACTS OF JAPAN vol. 13, no. 487 (C - 649) 6 November 1989 (1989-11-06) *

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000076929A1 (en) * 1999-06-10 2000-12-21 Rockwool International A/S Briquettes, their use in mineral fibre production and their production

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DE19800409A1 (en) 1998-07-16

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