DE3512516A1 - Inorganic moulding compound with electrostatic precipitator ash as brick-forming component - Google Patents
Inorganic moulding compound with electrostatic precipitator ash as brick-forming componentInfo
- Publication number
- DE3512516A1 DE3512516A1 DE19853512516 DE3512516A DE3512516A1 DE 3512516 A1 DE3512516 A1 DE 3512516A1 DE 19853512516 DE19853512516 DE 19853512516 DE 3512516 A DE3512516 A DE 3512516A DE 3512516 A1 DE3512516 A1 DE 3512516A1
- Authority
- DE
- Germany
- Prior art keywords
- weight
- electrostatic precipitator
- inorganic
- precipitator ash
- moulding compound
- 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.)
- Granted
Links
- 239000012717 electrostatic precipitator Substances 0.000 title claims abstract description 18
- 239000000206 moulding compound Substances 0.000 title abstract 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000000465 moulding Methods 0.000 claims abstract description 24
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 16
- 229910052910 alkali metal silicate Inorganic materials 0.000 claims abstract description 14
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 12
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 10
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 10
- 239000000945 filler Substances 0.000 claims abstract description 10
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 10
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 6
- 239000011521 glass Substances 0.000 claims abstract description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910001845 yogo sapphire Inorganic materials 0.000 claims abstract description 3
- 150000001875 compounds Chemical class 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 7
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 4
- 229910001854 alkali hydroxide Inorganic materials 0.000 claims description 3
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims 2
- 239000000243 solution Substances 0.000 claims 2
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 238000005452 bending Methods 0.000 abstract 1
- 239000002956 ash Substances 0.000 description 17
- 235000013312 flour Nutrition 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000006004 Quartz sand Substances 0.000 description 3
- 229910001570 bauxite Inorganic materials 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 239000010431 corundum Substances 0.000 description 3
- 239000010881 fly ash Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000009257 reactivity Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 235000013339 cereals Nutrition 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 239000005368 silicate glass Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- CYUOWZRAOZFACA-UHFFFAOYSA-N aluminum iron Chemical compound [Al].[Fe] CYUOWZRAOZFACA-UHFFFAOYSA-N 0.000 description 1
- 229910021486 amorphous silicon dioxide Inorganic materials 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000011476 clinker brick Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- -1 however Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000002557 mineral fiber Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000012763 reinforcing filler Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010454 slate Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010421 standard material Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- C04B12/00—Cements not provided for in groups C04B7/00 - C04B11/00
- C04B12/04—Alkali metal or ammonium silicate cements ; Alkyl silicate cements; Silica sol cements; Soluble silicate cements
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/006—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing mineral polymers, e.g. geopolymers of the Davidovits type
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/16—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing anhydrite, e.g. Keene's cement
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00586—Roofing materials
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
-
- 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
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
Description
Anorganische Formmasse mit Elektrofilterasche alsInorganic molding compound with electrostatic precipitator ash as
steinbildende Komponente Die Erfindung betrifft eine anorganische Formmasse sowie ein Herstellverfahren für diese Formmasse aus Alkalisilikatlösungen und Elektrofilterasche als aktive, steinbildende Komponente sowie ggf. Füllstoffen.Stone-forming component The invention relates to an inorganic one Molding compound and a manufacturing process for this molding compound from alkali silicate solutions and electrostatic precipitator ash as an active, stone-forming component and, if necessary, fillers.
Die Besonderheit von solchen anorganischen Formmassen liegt darin, daß formbare, und insbesondere gießbare Mischungen nach kurzer Zeit aktiv durch Reaktion der Komponente härten und dann entformbar sind.The peculiarity of such inorganic molding compounds is that that moldable, and especially pourable mixtures become active after a short time Reaction of the component harden and are then demoldable.
Die weitere Besonderheit liegt in einer Härtung bei nur geringen Temperaturen bis höchstens 15000, im Regelfall höchstens 1000C, wobei hohe Biegefestigkeiten erreicht werden. Derartige Biegefestigkeiten sind vergleichbar mit denen von Keramik, wobei jedoch Keramik solche Biegefestigkeiten nur nach dem Brennen bei sehr hohen Temperaturen erreicht.Another special feature is hardening at only low temperatures up to a maximum of 15,000, usually a maximum of 1000C, with high flexural strengths can be achieved. Such flexural strengths are comparable to those of ceramics, however, ceramic such flexural strengths only after firing reached at very high temperatures.
Formmassen mit diesen Eigenschaften sind nur erhältlich mit ganz bestimmten Feststoffen als aktive, steinbildende Komponente.Molding compounds with these properties are only available with very specific ones Solids as an active, stone-forming component.
So ist beispielsweise nach der DE-OS 32 46 602 ein Oxid-Gemisch aus SiO2 und Aluminiumoxid eine steinbildende Komponente, wobei dieses Oxid-Gemisch aus amorphem SiO2 und aus im wesentlichen kristallinem Aluminiumoxid sowie weiteren Komponenten besteht. Dieses Oxid-Gemisch ist wasserfrei und entsteht insbesondere bei speziellen Prozessen, besonders als Staub, durch Abscheidung aus der Dampf- oder Gasphase, bei der Herstellung von Korund.For example, according to DE-OS 32 46 602, an oxide mixture is made SiO2 and aluminum oxide are a stone-forming component, this oxide mixture made of amorphous SiO2 and essentially crystalline aluminum oxide and others Components. This oxide mixture is anhydrous and is created in particular in special processes, especially as dust, through separation from the vapor or gas phase, in the production of corundum.
Ein solches Oxid-Gemisch hat sehr stark wechselnde Zusammensetzungen und eine ständig wechselnde, nicht vorherbestimmbare Aktivität als steinbildende Komponente.Such an oxide mixture has very strongly changing compositions and a constantly changing, unpredictable activity as stone-forming Component.
Solche Oxid-Gemische sind daher schwierig zu bearbeiten und erfordern eine Bestimmung der Aktivität als steinbildende Komponente durch Versuche und anschließende Vermischung von Materialien verschiedener Aktivität zu Standardmaterialien.Such oxide mixtures are therefore difficult to work with and require a determination of the activity as a stone-forming component through experiments and subsequent Mixing of materials with different activities to standard materials.
Es bestand daher die Aufgabe, eine wasserhaltige, härtbare Formmasse auf Basis von festen, härtbaren, aktiven Komponenten zu schaffen, welche eine genügende Aktivität aufweisen und in größeren Mengen von gleicher Qualität verfügbar sind.The object was therefore to provide a water-containing, curable molding composition based on solid, curable, active components to create a sufficient Have activity and are available in larger quantities of the same quality.
Gegenstand der Erfindung ist daher eine anorganische, wasserhaltige, bei niedrigen Temperaturen härtbare Form- masse aus einer anorganischen, festen Komponente und Alkalisilikatlösung mit gegebenenfalls enthaltenen Anteilen von Füllstoffen und Hilfsstoffen, dadurch gekennzeichnet, daß 0,5 bis 4,0 Gew.-Teile glasartig amorphe Elektrofilterasche mit 45 bis 55 Gew.-% SiO2-Glas, 25 bis 35 Gew.-O/o A1203 neben Fe203 je Gew.-Teil Alkalisilikatlösung mit 1,2 bis 2,5 Mol SiO2 je Mol F O bzw.The invention therefore relates to an inorganic, water-containing, mold hardenable at low temperatures mass of an inorganic, solid component and alkali silicate solution with any proportions it may contain of fillers and auxiliaries, characterized in that 0.5 to 4.0 parts by weight Vitreous amorphous electrostatic precipitator ash with 45 to 55% by weight SiO2 glass, 25 to 35% by weight A1203 in addition to Fe203 per part by weight of alkali metal silicate solution with 1.2 to 2.5 mol SiO2 per mol F O or
Na2O enthalten ist.Na2O is included.
Diese sogenannte Elektrofilterasche entsteht nur in Steinkohle-Kraftwerken mit Brennksmmer-Temperaturen von 1.600 bis 1.700°C und ist aufgrund dieser Entstehung von gleichartiger Reaktivität ein Bestandteil der Formmasse.This so-called electrostatic precipitator ash is only produced in hard coal power plants with Brennksmmer temperatures of 1,600 to 1,700 ° C and is due to this formation a component of the molding compound of similar reactivity.
Die Elektrofilterasche scheidet sich in solchen Eraftwerken in den Elektrofiltern aus den Rauchgasen ab und ist dementsprechend feinteilig.The electrostatic precipitator ash separates in such power plants into the Electrostatic precipitators from the flue gases and is accordingly finely divided.
Im Regelfall liegt die Korngröße zu 65 % unter 10/ihm, zu 80 % unter 20/im und 90 % unter 60 m. Die Analyse der meisten Proben liegt bei 48 bis 52 Gew.-% SiO2, 25 bis 30 Gew.-% A1203 und 8 bis 11 % Je203, wobei weitere Bestandteile nur in geringen Mengen enthalten sind.As a rule, the grain size is 65% less than 10 / him, 80% less 20 / im and 90% under 60 m. Analysis of most samples is 48 to 52% by weight SiO2, 25 to 30% by weight A1203 and 8 to 11% Je203, with further components only are contained in small quantities.
Die Elektrofilterasche ist nach der Erscheinung ein silikatisches Glas, überwiegend ein Aluminiumeisensilikat-Glas mit enthaltenden Anteilen anderer Oxide.According to its appearance, the electrostatic precipitator ash is silicate Glass, predominantly an aluminum iron silicate glass with containing proportions of others Oxides.
Obwohl Gläser im allgemeinen eine geringe Reaktionsfähigkeit mit Alkalien besitzen, hat die Elektrofilterasche ein großes Reaktionsvermögen mit der genannten Alkalisilikatlösung.Although glasses are generally poor in reactivity with alkalis own, the electrostatic precipitator ash has a great reactivity with the said Alkali silicate solution.
Der bevorzugte Anteil der an der Reaktion beteiligten Elektrofilterasche beträgt 0,8 bis 3,0 Gew.-Teile je Gew.The preferred fraction of the ESP ash involved in the reaction is 0.8 to 3.0 parts by weight per weight
Teil Alkalisilikatlösung. Es ist jedoch möglich, Elektro- filterasche auch in Art eines Füllstoffes einzusetzen, wobei dann ein Teil der Elektrofilterasche nicht aktiv an der Steinbildung teilnimmt. In diesem Fall kann Elektrofilterasche der gesamte feste Anteil, bevorzugt bis zu 95 % der festen Anteile sein.Part of alkali silicate solution. However, it is possible to use electrical filter ash can also be used in the form of a filler, in which case part of the electrostatic precipitator ash does not actively participate in stone formation. In this case, electrostatic precipitator ash the total solid portion, preferably up to 95% of the solid portion.
In der Alkalisilikatlösung sind bevorzugt 1,3 bis 2,2 Mol SiO2 je Mol K20 bzw Na20 enthalten. In Alkalisilikatlösungen ist K20 gegenüber Na20 bevorzugt. Die Alkalisilikatlösungen sollen Alkali im oberschuß enthalten. Sehr bevorzugt werden solche Alkalisilikatlösungen durch Auflösen von amorpher dispers-pulverförmiger, wasserhaltiger Kieselsäure, der sogenannten gefällten Kieselsäure, erhalten. Dabei wird bevorzugt eine Lösung der Alkalihydroxide oder festes Alkalihydroxid unter Zusatz von Wasser mit der gefällten Kieselsäure zur Reaktion gebracht.In the alkali silicate solution there are preferably 1.3 to 2.2 mol SiO2 each Contains moles of K20 or Na20. In alkali silicate solutions, K20 is preferred over Na20. The alkali silicate solutions should contain an excess of alkali. Very preferred such alkali silicate solutions by dissolving amorphous, dispersed powdery, water-containing silica, the so-called precipitated silica, obtained. Included a solution of alkali hydroxides or solid alkali hydroxide is preferred Added water to react with the precipitated silica.
Zur Herstellung der Formmasse werden die Komponenten gemischt, wobei zweckmäßig eine Vorreaktion der Elektrofilterasche und der alkalischen Kieselsäurelösung bei Raumtemperatur erfolgt, welche beispielsweise 20 bis 40 Minuten betragen kann. Nach einer solchen Vorreaktion werden geeignete Formen mit der Formmasse gefüllt, wobei im Regelfall nach relativ kurzer Zeit eine Verfestigung eintritt,die eine Entformung erlaubt. Die Formkörper können in der Form oder bevorzugt nach Entformung gehärtet werden, wobei Temperaturen zwischen 60 und 1000 C bevorzugt und überraschend ausreichend sind. Die Härtungszeit ist vergleichsweise kurz und liegt zwischen 20 und 40 Minuten.To produce the molding compound, the components are mixed, with expediently a pre-reaction of the electrostatic precipitator ash and the alkaline silica solution takes place at room temperature, which can be, for example, 20 to 40 minutes. After such a pre-reaction, suitable molds are filled with the molding compound, usually after a relatively short time a solidification occurs, the one Demoulding allowed. The moldings can be in the mold or preferably after removal from the mold are cured, with temperatures between 60 and 1000 C preferred and surprising are sufficient. The curing time is comparatively short and is between 20 and 40 minutes.
Es werden Formkörper mit einer überraschend hohen Biegefestigkeit erhalten, welche 10 N/mm2 übersteigt und bei Werten bis zu 15 N/mm2 und darüber liegen kann.There are moldings with a surprisingly high flexural strength obtained, which exceeds 10 N / mm2 and at values up to 15 N / mm2 and above can lie.
Die Alkalisilikatlösungen haben im allgemeinen einen Wassergehalt von 28 bis 45 Gew. -*, der bei den nicht bevorzugten Natron-Wasserglaslösungen auch bis zu 60 Gew.-% sein kann, wobei die wasserärmeren Lösungen bevorzugt sind. In den Formmassen kann der Wassergehalt 20 bis 65 Gew.-%, bezogen auf die aktiven steinbildenden Bestandteile und ohne Berücksichtigung der Füllstoffe, betragen, wobei Wassergehalte von 26 bis 58 Gew.-% bevorzugt sind.The alkali silicate solutions generally have a water content from 28 to 45 wt. - *, the same for the non-preferred soda waterglass solutions can be up to 60 wt .-%, the lower water solutions are preferred. In The water content of the molding compounds can be 20 to 65% by weight, based on the active stone-forming Components and without taking the fillers into account, with water contents from 26 to 58% by weight are preferred.
Der Ausgangsstoff Elektrofilterasche ist praktisch unbegrenzt lagerbar, weiterhin ist die gefällte Kieselsäure als rieselfähiges und auf lange Zeit lagerfähiges Pulver zugängig, kann jedoch auch filterfeucht oder als breiiges Gel Verwendung finden.The source material electrostatic precipitator ash can be stored practically indefinitely, Furthermore, the precipitated silica is pourable and storable for a long time Powder accessible, but can also be used as a filter-moist or pulpy gel Find.
Füllstoffe können in Mengen von 1.000 g, vorzugsweise bis zu 400 g, je 100 g der steinbildenden Komponente in der Formmasse enthalten sein.Fillers can be used in amounts of 1,000 g, preferably up to 400 g, per 100 g of the stone-forming component can be contained in the molding compound.
Die Art der Füllstoffe ist sehr vielfältig, wobei einfach zugängige, anorganische Stoffe in gemahlener oder verteil ter Form bevorzugt werden, beispielsweise Gesteinsmehle, Basalte, Tone, Feldspäte, Glimmer-Mehl, Glas-Mehl, Quarzsand oder Quarz-Mehl, Bauxit-Mehl, Tonerdehydrat und Abfälle der Tonerde-, Bauxit- oder Korund-Industrie, Aschen, Schlacken sowie mineralische Fasermaterialien.The type of fillers is very diverse, with easily accessible, inorganic substances in ground or distributed form are preferred, for example Rock flour, basalt, clays, feldspars, mica flour, glass flour, quartz sand or Quartz flour, bauxite flour, alumina hydrate and waste from the alumina, bauxite or corundum industry, Ash, slag and mineral fiber materials.
Weiterhin können organische Fasermaterialien, beispielsweise Cellulose, Fasern oder synthetische Fasern, als verstärkende Füllstoffe anwesend sein. Als Füllstoff ist von besonderem Wert Flugasche aus Steinkohle-Kraftwerken, die Kesseltemperaturen unter 1.6000 C haben. Solche Flugasche ist nicht reaktionsfähig oder steinbildend, jedoch wegen der Feinteiligkeit gut einmischbar.Furthermore, organic fiber materials, for example cellulose, Fibers, or synthetic fibers, may be present as reinforcing fillers. as Filler is of particular value fly ash from coal-fired power plants, the boiler temperatures below 1,6000 C. Such fly ash is not reactive or stone-forming, but easy to mix in because of the fine division.
Der Vermahlungsgrad und die Korafeinheit sind auf den jeweiligen Verwendungszweck abzustimmen, wobei häufig sehr feine Anteile neben Körnungen bestimmter Größe nebeneinander zweckmäßig sind und die physikalischen Eigenschaften mitbestimmen.The degree of grinding and the Koraf unit depend on the respective purpose to be coordinated, with often very fine fractions next to grains of a certain size next to each other are appropriate and help determine the physical properties.
Eine Färbung, insbesondere durch Pigmentfarben, ist möglich.Coloring, especially with pigment dyes, is possible.
Die Formkörper weisen im allgemeinen nur eine geringe Formschwindung und keine Rißbildung bei der Härtung auf, wobei eine gute Durchmischung der Formmasse Voraussetzung ist.The moldings generally show only a small amount of mold shrinkage and no cracking during curing, with good mixing of the molding compound Requirement is.
Die hohe Bruchfestigkeit erlaubt auch die Herstellung von Formkörpern großer Dimensionen und großflächiger flacher Formkörper, die beispielsweise als Platten für die Verkleidung von Wänden oder für die Deckung von Dächern in Art von Schieferplatten, Klinkern oder Bekleidungen brauchbar sind und dort durch Biegebruchfestigkeit einen besonderen Wert aufweisen.The high breaking strength also allows the production of moldings large dimensions and large-area flat moldings, for example as Panels for cladding walls or for covering roofs in the manner of Slate slabs, clinker bricks or cladding are useful and there through flexural strength have a special value.
Die Formmassen ermöglichen eine gute Formtreue und erlauben bestimmte Oberflächenstrukturen, Aussparungen und Hinterschneidungen auszuprägen.The molding compounds allow a good dimensional accuracy and allow certain Embossing surface structures, recesses and undercuts.
Soweit gewollt, kann eine nachträgliche Bearbeitung der Oberfläche durch z.B. Schleifen, Fräsen und Bohren erfolgen. Wenn gewollt, kann die Oberfläche mit einem Lack versehen werden.If desired, the surface can be processed afterwards be done e.g. by grinding, milling and drilling. If wanted, the surface can be provided with a varnish.
Der besondere Vorteil der erfindungsgemäßen Formkörper liegt darin, daß Formkörper erhalten werden, die vielfach keramische Formkörper ersetzen können, jedoch auf energiesparende Weise hergestellt werden, da ein Brennvorgang wie bei keramischen Materialien überflüssig ist.The particular advantage of the moldings according to the invention is that that moldings are obtained which can often replace ceramic moldings, However, they can be produced in an energy-saving manner, since a burning process as in ceramic materials is superfluous.
Beispiel 1 Elektrofilterasche aus der Hochtemperatur-Steinkohleverbrennung bei 1.600 bis 1,7000 C in Kraftwerken, die ca.Example 1 Electrostatic precipitator ash from high-temperature coal combustion at 1,600 to 1,7000 C in power plants that generate approx.
50 bis 60 Gew.-% SiO2 in Form von amorphem Glas neben ca.50 to 60% by weight SiO2 in the form of amorphous glass in addition to approx.
30 Gew.-% Al203 sowie Fe203 und andere Oxide enthält, wird mit einer durch Auflösung von gefällter amorpher Kieselsäure in 50 Gew.-%iger Kaliumhydroxidlösung hergestellter Lösung, die 1,82 Mol SiO2 je Mol E20 enthält, im Gewichtsverhältnis 3 : 2 gemischt und 30 Minuten stehen gelassen, dann werden Quarzsand und Quarzmehl in gleicher Menge, die der genannten Lösung entspricht, zugemischt, die Mischung in Formen gebracht und innerhalb 90 Minuten bei 850 C gehärtet. Biegefestigkeit: 13,1 N/mm2.30 wt .-% Al203 as well as Fe203 and other oxides is used with a by dissolving precipitated amorphous silica in 50% strength by weight potassium hydroxide solution produced solution, which contains 1.82 mol SiO2 per mol E20, in the weight ratio 3: 2 mixed and left to stand for 30 minutes, then quartz sand and quartz flour mixed in the same amount that corresponds to the solution mentioned, the mixture brought into molds and cured at 850 C within 90 minutes. Flexural strength: 13.1 N / mm2.
Beispiel 2 272 g der in Beispiel 1 beschriebenen Elektrofilterasche werden mit 106 g der in Beispiel 1 beschriebenen Lösung gemischt und 60 Minuten stehengelassen. Nach Zugabe von 106 g Quarzsand und Formfüllung wird bei 850 C in 30 Minuten gehärtet. Biegefestigkeit: 14,1 N/mm2.Example 2 272 g of the electrostatic precipitator ash described in Example 1 are mixed with 106 g of the solution described in Example 1 and 60 minutes ditched. After adding 106 g of quartz sand and filling the mold, in Hardened for 30 minutes. Flexural strength: 14.1 N / mm2.
Beispiel 3 106 g der Elektrofilterasche nach Beispiel 1 und 106 g der Lösung,wie in Beispiel 1 beschrieben, werden mit Füllstoffen, nämlich 126 g Ofenfilterstaub, der bei der elektrochemischen Verarbeitung von Bauxit zu Korund anfällt, und 106 g Flugasche, die in Steinkohle-Kraftwerken, die bei niedrigerer Temperatur arbeiten, als nicht reaktionsfähiger Stoff anfällt, gemischt, in Formen gebracht und innerhalb von 30 Minuten bei 850 C gehärtet. Biegefestigkeit: 12,5 N/mm2.Example 3 106 g of the electrostatic precipitator ash according to Example 1 and 106 g the solution, as described in Example 1, are filled with fillers, namely 126 g Oven filter dust that is produced during the electrochemical processing of bauxite into corundum accrues, and 106 g of fly ash, which in coal-fired power plants, which at lower Working at temperature, as a non-reactive substance is produced, mixed, in forms brought and cured at 850 C within 30 minutes. Flexural Strength: 12.5 N / mm2.
Claims (2)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19853512516 DE3512516A1 (en) | 1985-04-06 | 1985-04-06 | Inorganic moulding compound with electrostatic precipitator ash as brick-forming component |
| AT86103242T ATE62008T1 (en) | 1985-04-06 | 1986-03-11 | INORGANIC MOLD CONTAINING A STONE-FORMING COMPONENT. |
| EP19860103242 EP0199941B2 (en) | 1985-04-06 | 1986-03-11 | Inorganic shaped body containing a petrifying component |
| DE8686103242T DE3678325D1 (en) | 1985-04-06 | 1986-03-11 | INORGANIC SHAPE WITH CONTENT OF A STONE-FORMING COMPONENT. |
| SU864027232A RU1838273C (en) | 1985-04-06 | 1986-04-04 | Molding composition |
| US06/848,493 US4681631A (en) | 1985-04-06 | 1986-04-07 | Inorganic molding composition containing a lithogenous component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19853512516 DE3512516A1 (en) | 1985-04-06 | 1985-04-06 | Inorganic moulding compound with electrostatic precipitator ash as brick-forming component |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3512516A1 true DE3512516A1 (en) | 1986-10-09 |
| DE3512516C2 DE3512516C2 (en) | 1988-11-10 |
Family
ID=6267413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19853512516 Granted DE3512516A1 (en) | 1985-04-06 | 1985-04-06 | Inorganic moulding compound with electrostatic precipitator ash as brick-forming component |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE3512516A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19816367A1 (en) * | 1998-04-03 | 1999-10-07 | Heiko Hessenkemper | Molded construction material especially a roof covering material |
| WO2000073238A1 (en) * | 1999-05-21 | 2000-12-07 | Rossysky Federalny Yaderny Tsentr-Vserossysky Nau Chno-Issledovatelsky Institut Experimentalnoi Fiziki - Rfyats--Vniief | Silicate composition for producing a thermal-insulation material |
| EP2389345A2 (en) * | 2009-01-22 | 2011-11-30 | The Catholic University Of America | Tailored geopolymer composite binders for cement and concrete applications |
| WO2012069024A3 (en) * | 2010-11-23 | 2012-08-09 | Razl Ivan | Acid and high temperature resistant cement composites |
| DE102023001330A1 (en) | 2022-07-13 | 2024-01-18 | K o l l e r Kunststofftechnik GmbH | Flat shaped bodies constructed as a sandwich |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4124982C2 (en) * | 1991-07-27 | 1995-07-20 | Karl Heinz Vahlbrauk | Device for air conditioning rooms |
| DE10049251A1 (en) | 2000-09-28 | 2002-04-11 | Trocellen Gmbh | Method and device for the continuous production of an inorganic foam |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3246621A1 (en) * | 1982-12-16 | 1984-06-20 | Dynamit Nobel Ag, 5210 Troisdorf | COMPONENT COVERINGS OF INORGANIC MOLDS |
| DE3246602A1 (en) * | 1982-12-16 | 1984-06-20 | Dynamit Nobel Ag, 5210 Troisdorf | Hardenable water-containing moulding compositions based on inorganic constituents, mouldings prepared from these and process for preparing the moulding composition |
-
1985
- 1985-04-06 DE DE19853512516 patent/DE3512516A1/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3246621A1 (en) * | 1982-12-16 | 1984-06-20 | Dynamit Nobel Ag, 5210 Troisdorf | COMPONENT COVERINGS OF INORGANIC MOLDS |
| DE3246602A1 (en) * | 1982-12-16 | 1984-06-20 | Dynamit Nobel Ag, 5210 Troisdorf | Hardenable water-containing moulding compositions based on inorganic constituents, mouldings prepared from these and process for preparing the moulding composition |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19816367A1 (en) * | 1998-04-03 | 1999-10-07 | Heiko Hessenkemper | Molded construction material especially a roof covering material |
| WO2000073238A1 (en) * | 1999-05-21 | 2000-12-07 | Rossysky Federalny Yaderny Tsentr-Vserossysky Nau Chno-Issledovatelsky Institut Experimentalnoi Fiziki - Rfyats--Vniief | Silicate composition for producing a thermal-insulation material |
| EP2389345A2 (en) * | 2009-01-22 | 2011-11-30 | The Catholic University Of America | Tailored geopolymer composite binders for cement and concrete applications |
| EP2389345A4 (en) * | 2009-01-22 | 2013-08-14 | Univ America Catholic | Tailored geopolymer composite binders for cement and concrete applications |
| US9834479B2 (en) | 2009-01-22 | 2017-12-05 | The Catholic University Of America | Tailored geopolymer composite binders for cement and concrete applications |
| WO2012069024A3 (en) * | 2010-11-23 | 2012-08-09 | Razl Ivan | Acid and high temperature resistant cement composites |
| DE102023001330A1 (en) | 2022-07-13 | 2024-01-18 | K o l l e r Kunststofftechnik GmbH | Flat shaped bodies constructed as a sandwich |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3512516C2 (en) | 1988-11-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0199941B1 (en) | Inorganic shaped body containing a petrifying component | |
| DE2759908C2 (en) | concrete | |
| DE2553140C2 (en) | Process for the production of a binder for building purposes | |
| DE3303409C2 (en) | Mixture for the production of a machine foundation and its use | |
| EP0912457A1 (en) | Foamed material for fireproofing and/or insulating | |
| DE3246602A1 (en) | Hardenable water-containing moulding compositions based on inorganic constituents, mouldings prepared from these and process for preparing the moulding composition | |
| WO2015124768A1 (en) | Compounds or molded articles made of inorganic polymers, and production thereof | |
| DE3246619A1 (en) | Foamable water-containing hardenable inorganic moulding compositions, mouldings prepared therefrom and process for preparing the moulding composition | |
| DE3512515C2 (en) | ||
| DE19702254A1 (en) | Highly porous moulding especially light construction block | |
| DE19858342C1 (en) | Cement-free molded product, for sound or thermal insulation or fireproofing, comprises a hydrothermally hardened mixture of lime-based component and hollow silicate micro-spheres | |
| EP0417583B1 (en) | Inorganic shaped body | |
| EP0100306B1 (en) | Method of producing refractory non basic and non isolating bricks and masses that contain carbon | |
| DE3512516A1 (en) | Inorganic moulding compound with electrostatic precipitator ash as brick-forming component | |
| DE3246604A1 (en) | Hardenable water-containing moulding compositions based on inorganic constituents, mouldings prepared from these and process for preparing the moulding composition | |
| EP0600378B1 (en) | Porcelain, its composition and process for its manufacture | |
| DE19738373A1 (en) | Moulding material useful for lightweight insulating products | |
| DE2356524A1 (en) | Aq. dispersion of silicates - for bonding rock material and for use as a glaze | |
| DE3347250C2 (en) | Basic, refractory bricks or masses based on mixtures of olivine-magnesia and / or magnesium-aluminum-spinel, their manufacture and use | |
| DE2533774A1 (en) | CERAMIC DIMENSIONS, THE PROCESS FOR THEIR PRODUCTION AND THE USE OF THE DIMENSIONS FOR THE MANUFACTURE OF STONE PRODUCTS | |
| DE19728525C1 (en) | Hydrothermally hardened porous concrete article | |
| DE19855019A1 (en) | Molding, used as a path, facade or floor construction material, consists of waterglass, meta kaolin and filler compacted by centrifugal mixing using rotating stirrer elements | |
| DE29724777U1 (en) | Highly porous moulding especially light construction block - consists of geopolymer=bonded expanded glass granule(s) in hardened mixture with binder, comprising alkali metal solution and oxide(s) mixture | |
| DE2248205A1 (en) | BINDERS AND REFRACTORY CONCRETE | |
| RU2226515C1 (en) | Raw meal and a method for manufacturing wall materials |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| 8127 | New person/name/address of the applicant |
Owner name: HUELS TROISDORF AG, 5210 TROISDORF, DE |
|
| D2 | Grant after examination | ||
| 8363 | Opposition against the patent | ||
| 8331 | Complete revocation |