DE3816715A1 - Granular composition - Google Patents
Granular compositionInfo
- Publication number
- DE3816715A1 DE3816715A1 DE19883816715 DE3816715A DE3816715A1 DE 3816715 A1 DE3816715 A1 DE 3816715A1 DE 19883816715 DE19883816715 DE 19883816715 DE 3816715 A DE3816715 A DE 3816715A DE 3816715 A1 DE3816715 A1 DE 3816715A1
- Authority
- DE
- Germany
- Prior art keywords
- weight
- parts
- granular mass
- mass according
- mixture
- 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.)
- Withdrawn
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 16
- 239000000155 melt Substances 0.000 claims abstract description 7
- 239000011230 binding agent Substances 0.000 claims abstract description 6
- 239000011148 porous material Substances 0.000 claims abstract description 5
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 4
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 3
- 235000021317 phosphate Nutrition 0.000 claims abstract description 3
- 150000003013 phosphoric acid derivatives Chemical class 0.000 claims abstract description 3
- 150000004760 silicates Chemical class 0.000 claims abstract description 3
- 150000003467 sulfuric acid derivatives Chemical class 0.000 claims abstract description 3
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 6
- 239000004327 boric acid Substances 0.000 claims description 6
- 239000004094 surface-active agent Substances 0.000 claims description 5
- 239000010455 vermiculite Substances 0.000 claims description 5
- 229910052902 vermiculite Inorganic materials 0.000 claims description 5
- 235000019354 vermiculite Nutrition 0.000 claims description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 4
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 4
- 235000007164 Oryza sativa Nutrition 0.000 claims description 3
- 235000009566 rice Nutrition 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 2
- 239000007799 cork Substances 0.000 claims description 2
- 239000002657 fibrous material Substances 0.000 claims 3
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 claims 2
- 240000007594 Oryza sativa Species 0.000 claims 1
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 229910044991 metal oxide Inorganic materials 0.000 claims 1
- 150000004706 metal oxides Chemical class 0.000 claims 1
- 239000011490 mineral wool Substances 0.000 claims 1
- 239000000344 soap Substances 0.000 claims 1
- 125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052799 carbon Inorganic materials 0.000 abstract description 7
- 238000002425 crystallisation Methods 0.000 abstract description 3
- 238000005507 spraying Methods 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 description 11
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 6
- 239000008187 granular material Substances 0.000 description 6
- 230000000873 masking effect Effects 0.000 description 5
- 235000013339 cereals Nutrition 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 3
- 235000019341 magnesium sulphate Nutrition 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 241000209094 Oryza Species 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052839 forsterite Inorganic materials 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 2
- 239000001095 magnesium carbonate Substances 0.000 description 2
- 235000014380 magnesium carbonate Nutrition 0.000 description 2
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 2
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 229910052609 olivine Inorganic materials 0.000 description 1
- 239000010450 olivine Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 235000019830 sodium polyphosphate Nutrition 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 210000002268 wool Anatomy 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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/111—Treating the molten metal by using protecting powders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/02—Linings
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/027—Lightweight 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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00146—Sprayable or pumpable mixtures
- C04B2111/00155—Sprayable, i.e. concrete-like, materials able to be shaped by spraying instead of by casting, e.g. gunite
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Products (AREA)
Abstract
Description
Die Erfindung bezieht sich auf eine granulatartige Masse für die Abdeckung von Schmelzen in metallurgischen Gefäßen, insbesondere für Pfannen und Verteiler sowie zur Bildung von isolierenden Leichtspritzmassen für das Verschleißfutter und/oder die Auskleidung von Verteilern, bestehend aus einer Mischung aus zerkleinerten, anorganischen, feuerfesten Zuschlagstoffen und Bindemitteln.The invention relates to a granular mass for the covering of melts in metallurgical vessels, in particular for pans and distributors as well as for the formation of insulating Light spray compounds for the wear lining and / or the lining of distributors consisting of a mixture from crushed, inorganic, refractory additives and binders.
Abdeckmassen für Schmelzen haben die Aufgabe, die in einem metallurgischen Gefäß, beispielsweise einer Pfanne oder einem Verteiler, enthaltene Schmelze einerseits vor dem Einfluß des in der Umgebungsluft befindlichen Sauerstoffs zu schützen bzw. abzuschirmen und andererseits, insbesondere während eines Transportes, einen Wärmeverlust zu verhindern bzw. zu isolieren. Dabei sollen die Abdeckmassen möglichst leicht sein, kein chemisch gebundenes Wasser bzw. Kristallwasser und wenig, möglichst sogar keinen Kohlenstoff enthalten und vor allem in ihrer Herstellung preiswert sein.Masking compounds for melts have the task of being all in one metallurgical vessel, for example a pan or a Distributor, contained melt on the one hand before the influence to protect the oxygen in the ambient air or shield and on the other hand, especially during a Transportes to prevent or isolate heat loss. The masking compounds should be as light as possible, no chemically bound water or water of crystallization and little, if possible even contain no carbon and especially in be inexpensive to manufacture.
Es sind nun Abdeckmassen bekannt, die aus hohlkugelartigen, siliziumdioxidhaltigen Mineralien bestehen. Eine solche Abdeckmasse ist teuer, hat jedoch ein verhältnismäßig geringes Gewicht. Die Isolierung einer derartigen Abdeckmasse ist gut; ihr Nachteil besteht darin, daß der pH-Wert kleiner als 7 ist, was sich ungünstig auf die Schmelze auswirkt. Um eine unerwünschte Siliziumaufnahme zu vermeiden bzw. in geringen Grenzen zu halten, darf der Anteil an freiem Silizium in einer solchen Masse nicht über 10% liegen.Covering compounds are now known which consist of hollow spherical, minerals containing silicon dioxide. Such a masking compound is expensive, but has a relatively low weight. The insulation of such a covering compound is good; their disadvantage is that the pH is less than 7, which has an adverse effect on the melt. To an undesirable Avoid silicon absorption or to a limited extent to hold, the proportion of free silicon in one such mass do not exceed 10%.
Es ist ferner bekannt, eine Abdeckmasse für Schmelzen aus Reisschalenasche zu bilden. Reisschalenasche hat ein geringes Schüttgewicht und bewirkt eine gute Isolierung; ihr Nachteil besteht darin, daß sie teuer ist und Kohlenstoff enthält, der sich ungünstig auf Metallschmelzen auswirkt. Auch hier kann eine unerwünschte Siliziumaufnahme stattfinden.It is also known to use a covering compound for melts To form rice bowl ash. Rice bowl ash has a low level Bulk density and good insulation; their disadvantage is that it is expensive and contains carbon that has an adverse effect on molten metal. Here too unwanted silicon absorption takes place.
Weiterhin sind isolierende Leichtspritzmassen für die Auskleidung von Verteilern bekannt, die aus organischen Fasern und Phenolharz bestehen und mit verhältnismäßig viel Wasser angerührt werden. Solche Auskleidungen benötigen lange Aufheizzeiten, neigen zur Rißbildung und zu Abplatzungen, besitzen hohe Abprallverluste und führen zu Kohlenstoffablagerungen, die bei hoher Temperatur eine Wasserstoffabgabe an den Stahl bewirken.Insulating lightweight molding compounds are also used for the lining known from distributors made of organic fibers and Phenolic resin exist and mixed with a relatively large amount of water will. Such linings require long heating times, tend to crack and flake high impact losses and lead to carbon deposits, which releases hydrogen to the steel at high temperature cause.
Der Erfindung liegt nun die Aufgabe zugrunde, eine granulatartige Masse für die Abdeckung von Metallschmelzen sowie zur Bildung von isolierenden Leichtspritzmassen für das Verschleißfutter und/oder die Auskleidung von Verteilern in metallurgischen Gefäßen zu schaffen, die ein geringes Gewicht besitzt, kohlenstoff- und kristallwasserfrei ist und preiswert hergestellt werden kann.The invention is based on the object, a granular Mass for covering metal melts and for Formation of insulating lightweight spray compounds for the wear lining and / or the lining of manifolds in metallurgical Creating vessels that are light in weight, is free of carbon and water of crystallization and manufactured inexpensively can be.
Zur Lösung dieser Aufgabe wird bei einer granulatartigen Masse gemäß der Erfindung vorgeschlagen, daß die Mischung 2-10 Gewichtsteile eines Bindemittels auf der Basis von Phosphaten, Silikaten oder Sulfaten sowie 0,01 bis 0,5 Gewichtsteile eines Porenbildners enthält.To solve this problem with a granular mass proposed according to the invention that the mixture 2-10 parts by weight a binder based on phosphates, Silicates or sulfates and 0.01 to 0.5 parts by weight of one Contains pore formers.
Eine solche granulatartige Masse besitzt, insbesondere bei der Verwendung von porösen Zuschlagstoffen, ein sehr geringes Gewicht, weist einen pH-Wert größer als 7 auf, ist frei von Kohlenstoff und gebundenem Wasser, isoliert ausgezeichnet und kann darüber hinaus aber auch preiswert hergestellt werden. Sie ist sowohl für die Abdeckung von Metall-, insbesondere Stahlschmelzen, als auch zur Bildung von Vibrationsmassen für das Verschleißfutter von Verteilern, für isolierende Leichtspritzmassen für die Auskleidung von Verteilern sowie zur Herstellung von Verteilerplatten geeignet.Such a granular mass has, especially in the Use of porous aggregates, very light weight, has a pH greater than 7 and is free of carbon and bound water, excellent and isolated can also be manufactured inexpensively. It is both for covering metal, in particular Melting steel, as well as to form vibration masses for the wear lining of distributors, for insulating lightweight molding compounds for the lining of distributors and for manufacturing suitable for distribution plates.
Weitere Merkmale einer granulatartigen Masse gemäß der Erfindung sind in den Ansprüchen 2-9 offenbart.Further characteristics of a granular mass according to the invention are disclosed in claims 2-9.
Die Erfindung wird nachfolgend anhand mehrerer Ausführungsbeispiele näher erläutert.The invention is described below using several exemplary embodiments explained in more detail.
90 Gewichtsteile Forsterit (DIN 40)
5 Gewichtsteile expandierter Vermikulit
5 Gewichtsteile Magnesiumsulfat
0,5 Gewichtsteile kristalline Borsäure
0,04 Gewichtsteile Tensid90 parts by weight of forsterite (DIN 40)
5 parts by weight of expanded vermiculite
5 parts by weight of magnesium sulfate
0.5 parts by weight of crystalline boric acid
0.04 parts by weight of surfactant
werden in einem Zwangmischer unter Zugabe von etwa 15-20 Gewichtsteilen Wasser zu einem Brei gemischt und auf einem laufenden Band abgesiebt bzw. durch einen Siebkneter gepreßt. Das krümelige, körnige Granulat wird zunächst bei etwa 100 Grad Celsius vorgetrocknet und anschließend, beispielsweise in einem Drehrohrofen, bei etwa 600 Grad Celsius getrocknet. Dabei entweicht das Kristallwasser. Anschließend wird die Masse erneut abgesiebt. Das Granulat mit einer Körnung von etwa 2-4 mm wird abgepackt und später als Abdeckmasse verwendet. Die fertige Abdeckmasse hat ein Schüttgewicht von etwa 0,6 kg pro qdm. Das abgesiebte Material unter 2 mm wird für die nächste Mischung verwendet, wobei sich der Anteil des Vermikulits entsprechend reduziert. Die Feuerfestigkeit dieses Granulats wird dadurch erheblich verbessert.are in a compulsory mixer with the addition of about 15-20 parts by weight Water mixed to a pulp and on an ongoing basis Screened tape or pressed through a kneader. The crumbly, granular granules are initially at about 100 degrees Celsius pre-dried and then, for example in one Rotary kiln, dried at around 600 degrees Celsius. Here the crystal water escapes. Then the mass is again sieved. The granules with a grain size of about 2-4 mm is packaged and later used as masking material. The finished masking material has a bulk density of about 0.6 kg each qdm. The screened material under 2 mm is used for the next one Mixture used, the proportion of vermiculite correspondingly reduced. The fire resistance of this granulate will thereby significantly improved.
90 Gewichtsteile Dolomitcarbonat (DIN 40)
5 Gewichtsteile Magnesiumsulfat
5 Gewichtsteile keramische Wolle
3 Gewichtsteile Eisenoxid
3 Gewichtsteile 30prozentiges Wasserstoffperoxid90 parts by weight of dolomite carbonate (DIN 40)
5 parts by weight of magnesium sulfate
5 parts by weight of ceramic wool
3 parts by weight of iron oxide
3 parts by weight of 30 percent hydrogen peroxide
werden ebenfalls unter Zugabe von etwa 15-20 Gewichtsteilen Wasser zunächst in einem Zwangsmischer gefüllt und gemischt. Nachdem diese Mischung etwa eine halbe Stunde gestanden hat, wird sie zunächst bei einer Temperatur bis zu 1200 Grad Celsius gebrannt und anschließend wie im Beispiel 1 behandelt.are also added with about 15-20 parts by weight Water is first filled and mixed in a compulsory mixer. After this mixture has been standing for about half an hour, it is initially at a temperature up to 1200 degrees Celsius fired and then treated as in Example 1.
100 Gewichtsteile Magnesiumcarbonat (DIN 160 - DIN 40)
5 Gewichtsteile Korkschrot, Körnung 1-2 mm
5 Gewichtsteile Magnesiumsulfat
0,5 Gewichtsteile kristalline Borsäure
0,04 Gewichtsteile Tensid100 parts by weight of magnesium carbonate (DIN 160 - DIN 40)
5 parts by weight of cork shot, grain size 1-2 mm
5 parts by weight of magnesium sulfate
0.5 parts by weight of crystalline boric acid
0.04 parts by weight of surfactant
werden gemäß Beispiel 1 gemischt, abgesiebt, bei einer Temperatur bis zu 1200 Grad Celsius gebrannt und anschließend als körniges Material mit einer Körnung von 2-4 mm abgepackt. Das Schüttgewicht beträgt etwa 0,6 kg pro qdm.are mixed according to Example 1, sieved, at one temperature fired up to 1200 degrees Celsius and then as granular material packed with a grain size of 2-4 mm. The Bulk weight is about 0.6 kg per qdm.
70 Gewichtsteile Forsterit (DIN 40)
20 Gewichtsteile Sintermagnesit (DIN 120)
5 Gewichtsteile Vermikulit
5 Gewichtsteile Natriumpolyphosphat
0,5 Gewichtsteile kristalline Borsäure
0,04 Gewichtsteile Tensid70 parts by weight of forsterite (DIN 40)
20 parts by weight of sintered magnesite (DIN 120)
5 parts by weight of vermiculite
5 parts by weight of sodium polyphosphate
0.5 parts by weight of crystalline boric acid
0.04 parts by weight of surfactant
werden wie im Beispiel 1 gemischt, abgesiebt und vorgetrocknet. Die eigentliche Trocknung, beispielsweise in einem Drehrohrofen, erfolgt hier jedoch nur bei etwa 600 Grad Celsius. Anschließend wird das Material mit einer Körnung von 2-4 mm gesiebt und verpackt.are mixed, sieved and pre-dried as in Example 1. The actual drying, for example in a rotary kiln, however, this only takes place at around 600 degrees Celsius. Subsequently the material is sieved with a grain size of 2-4 mm and packed.
92 Gewichtsteile Olivin (DIN 40)
5 Gewichtsteile Natriumsilikat S 66
3 Gewichtsteile Vermikulit
0,5 Gewichtsteile Borsäure
0,04 Gewichtsteile Tensid
12 Gewichtsteile Wasser92 parts by weight of olivine (DIN 40)
5 parts by weight of sodium silicate S 66
3 parts by weight of vermiculite
0.5 parts by weight of boric acid
0.04 parts by weight of surfactant
12 parts by weight of water
werden miteinander vermischt und wie in Beispiel 1 behandelt.are mixed together and treated as in Example 1.
In allen Beispielen hat die Zugabe der kristallinen Borsäure den Zweck, die Bindung zu verbessern.In all examples the addition of crystalline boric acid the purpose of improving the bond.
Die unter Verwendung eines solchen Granulats hergestellten Leichtspritzmassen weisen - durch den geringeren Wasseranteil - eine kleinere Schwindung auf, und die Neigung zur Rißbildung und zu Abplatzungen wird reduziert. Sie sind kohlenstofffrei und besitzen - durch die rauhe Oberfläche des Granulats bedingt - geringe Abprallverluste, so daß ihr Einsatz bei Verschleißfuttern und/oder für die Auskleidung von Verteilern besonders vorteilhaft ist.Those made using such granules Light spray compounds have - due to the lower water content - a smaller shrinkage, and the tendency to crack and chipping is reduced. They are carbon free and own - due to the rough surface of the granulate - low Bounce losses, so that their use in wear chucks and / or particularly advantageous for the lining of distributors is.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19883816715 DE3816715A1 (en) | 1988-05-17 | 1988-05-17 | Granular composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19883816715 DE3816715A1 (en) | 1988-05-17 | 1988-05-17 | Granular composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE3816715A1 true DE3816715A1 (en) | 1989-11-30 |
Family
ID=6354510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19883816715 Withdrawn DE3816715A1 (en) | 1988-05-17 | 1988-05-17 | Granular composition |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE3816715A1 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9010129U1 (en) * | 1990-07-04 | 1990-09-20 | Foseco International Ltd., Birmingham | Agent for covering light metal melts |
| DE4215169A1 (en) * | 1992-05-08 | 1993-11-11 | Veitscher Magnesitwerke Ag | Protective non-sintering cover for smelting process - consists of caustic magnesia plus additive in pelletised or granular form, giving good thermal isolation from and protection against oxidn. to the molten metal e.g. steel |
| DE19731653C2 (en) * | 1997-07-23 | 2001-10-31 | Council Of Scient & Ind Res Ne | Process for the production of beads or pellets from rice husk ash and rice husk pellets or pellets |
| EP1188726A3 (en) * | 2000-09-18 | 2003-01-08 | Georg Dipl.-Ing. Partlic | Aggregate, in particular for concrete, and process of production |
| EP2100854A1 (en) * | 2008-03-14 | 2009-09-16 | North Cape Minerals AS | Granulate for the adsorption of heavy metals and organic pollutants |
| DE102013000527A1 (en) | 2013-01-15 | 2014-07-17 | Hans-Peter Noack | Method for covering a molten metal and cover material |
| DE102016112044A1 (en) * | 2016-06-30 | 2018-01-04 | Refratechnik Holding Gmbh | Use of a thermally insulating shaped body for insulating molten metal from the atmosphere or a metallurgical vessel |
| DE102016112042A1 (en) * | 2016-06-30 | 2018-01-04 | Refratechnik Holding Gmbh | Heat-insulating, refractory molded body, in particular plate, and process for its preparation and its use |
| CN120772482A (en) * | 2025-09-03 | 2025-10-14 | 洛阳科丰冶金新材料有限公司 | Low-consumption continuous casting mold flux based on porous magnesium oxide and preparation method thereof |
-
1988
- 1988-05-17 DE DE19883816715 patent/DE3816715A1/en not_active Withdrawn
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9010129U1 (en) * | 1990-07-04 | 1990-09-20 | Foseco International Ltd., Birmingham | Agent for covering light metal melts |
| DE4215169A1 (en) * | 1992-05-08 | 1993-11-11 | Veitscher Magnesitwerke Ag | Protective non-sintering cover for smelting process - consists of caustic magnesia plus additive in pelletised or granular form, giving good thermal isolation from and protection against oxidn. to the molten metal e.g. steel |
| DE19731653C2 (en) * | 1997-07-23 | 2001-10-31 | Council Of Scient & Ind Res Ne | Process for the production of beads or pellets from rice husk ash and rice husk pellets or pellets |
| EP1188726A3 (en) * | 2000-09-18 | 2003-01-08 | Georg Dipl.-Ing. Partlic | Aggregate, in particular for concrete, and process of production |
| EP2100854A1 (en) * | 2008-03-14 | 2009-09-16 | North Cape Minerals AS | Granulate for the adsorption of heavy metals and organic pollutants |
| DE102013000527A1 (en) | 2013-01-15 | 2014-07-17 | Hans-Peter Noack | Method for covering a molten metal and cover material |
| WO2014111334A2 (en) | 2013-01-15 | 2014-07-24 | Hans-Peter Noack | Method for covering a metal melt and covering material |
| DE202014011135U1 (en) | 2013-01-15 | 2018-01-25 | Hans-Peter Noack | Granules for covering a molten metal |
| DE102016112042A1 (en) * | 2016-06-30 | 2018-01-04 | Refratechnik Holding Gmbh | Heat-insulating, refractory molded body, in particular plate, and process for its preparation and its use |
| DE102016112044A1 (en) * | 2016-06-30 | 2018-01-04 | Refratechnik Holding Gmbh | Use of a thermally insulating shaped body for insulating molten metal from the atmosphere or a metallurgical vessel |
| DE102016112044B4 (en) | 2016-06-30 | 2019-01-03 | Refratechnik Holding Gmbh | Use of a heat-insulating plate for insulating molten metal from the atmosphere or a metallurgical vessel |
| CN109475929A (en) * | 2016-06-30 | 2019-03-15 | 雷法技术控股有限公司 | The purposes of the thermal resistance moulded liner of isolating metal melt and atmospheric environment or metallurgical furnace |
| DE102016112042B4 (en) | 2016-06-30 | 2019-10-02 | Refratechnik Holding Gmbh | Heat-insulating, refractory molded body, in particular plate, and process for its preparation and its use |
| US11150022B2 (en) | 2016-06-30 | 2021-10-19 | Refratechnik Holding Gmbh | Use of a heat insulating molded body for isolation of molten metal against the atmosphere or against a metallurgical vessel |
| US11148973B2 (en) | 2016-06-30 | 2021-10-19 | Refratechnik Holding Gmbh | Insulating, refractory molded body, especially plate, and process for its manufacture and its usage |
| CN109475929B (en) * | 2016-06-30 | 2021-10-26 | 雷法技术控股有限公司 | Use of a heat-resistant moulded lining for insulating a molten metal from the atmosphere or from a metallurgical furnace |
| CN120772482A (en) * | 2025-09-03 | 2025-10-14 | 洛阳科丰冶金新材料有限公司 | Low-consumption continuous casting mold flux based on porous magnesium oxide and preparation method thereof |
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