NO820438L - PROCEDURE FOR THE MANUFACTURE OF SOIL-RESISTANT OR SOIL-STAINED MATERIALS CONTAINING CERAMIC FIBERS - Google Patents
PROCEDURE FOR THE MANUFACTURE OF SOIL-RESISTANT OR SOIL-STAINED MATERIALS CONTAINING CERAMIC FIBERSInfo
- Publication number
- NO820438L NO820438L NO820438A NO820438A NO820438L NO 820438 L NO820438 L NO 820438L NO 820438 A NO820438 A NO 820438A NO 820438 A NO820438 A NO 820438A NO 820438 L NO820438 L NO 820438L
- Authority
- NO
- Norway
- Prior art keywords
- parts
- weight
- binder
- finely divided
- resistant
- Prior art date
Links
- 239000000835 fiber Substances 0.000 title claims description 44
- 238000000034 method Methods 0.000 title claims description 32
- 239000000919 ceramic Substances 0.000 title claims description 23
- 239000000463 material Substances 0.000 title claims description 17
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000011230 binding agent Substances 0.000 claims description 36
- 239000004927 clay Substances 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 14
- 239000004033 plastic Substances 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 13
- 239000002694 phosphate binding agent Substances 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 230000009970 fire resistant effect Effects 0.000 claims description 8
- 229920000609 methyl cellulose Polymers 0.000 claims description 8
- 239000001923 methylcellulose Substances 0.000 claims description 8
- 239000011888 foil Substances 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 claims description 4
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 claims description 3
- 239000000440 bentonite Substances 0.000 claims description 3
- 229910000278 bentonite Inorganic materials 0.000 claims description 3
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 3
- 235000019830 sodium polyphosphate Nutrition 0.000 claims description 3
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical class [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 2
- 229910000423 chromium oxide Inorganic materials 0.000 claims description 2
- 239000000395 magnesium oxide Substances 0.000 claims description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 2
- 235000013379 molasses Nutrition 0.000 claims description 2
- 239000004408 titanium dioxide Substances 0.000 claims description 2
- 239000011343 solid material Substances 0.000 claims 1
- 239000008187 granular material Substances 0.000 description 10
- 239000000243 solution Substances 0.000 description 9
- 239000000047 product Substances 0.000 description 7
- 239000000654 additive Substances 0.000 description 6
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000008240 homogeneous mixture Substances 0.000 description 2
- 239000002557 mineral fiber Substances 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 210000002268 wool Anatomy 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910052910 alkali metal silicate Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 229940075614 colloidal silicon dioxide Drugs 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000009736 wetting Methods 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
- C04B28/34—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 cold phosphate binders
-
- 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
- C04B30/00—Compositions for artificial stone, not containing binders
- C04B30/02—Compositions for artificial stone, not containing binders containing fibrous materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/0003—Linings or walls
- F27D1/0006—Linings or walls formed from bricks or layers with a particular composition or specific characteristics
- F27D1/0009—Comprising ceramic fibre elements
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ceramic Products (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Glass Compositions (AREA)
- Inorganic Fibers (AREA)
Description
Oppfinnelsen angår en fremgangsmåte ved fremstillingThe invention relates to a method for manufacturing
av eventuelt kornformige, ildbestandige eller ildfaste masser som inneholder keramiske fibre, og anvendelse av de ved fremgangsmåten fremstilte masser. of possibly granular, fire-resistant or refractory masses containing ceramic fibres, and use of the masses produced by the method.
Varmeisolerende, keramiske fiberlegemer av ildfaste fibre, organisk eller uorganisk bindemiddel med på den ene side lav fasthet og høy sammentrykkbarhet og på den annen side forhøyede verdier for fasthet, densitet og f ormbestandig-het er kjente. Således er i vest-tysk utlegningsskrift 1274490 et forbrenningskammer for ovner beskrevet som er blitt dannet ved utformning av fibermasse hvortil bindemiddel er tilsatt og hvor bindemiddelkonsentrasjonen skal avta over veggens tverrsnitt. Som egnet bindemiddel nevnes leirer, alkalisilikater, aluminiumfosfat eller kolloidalt silicium-dioxyd i en vektandel av 5-35%, optimalt 10%. Fiberlegemet er imidlertid på grunn av dets tette, hårde veggoverflate og den ovenforliggende myke, fleksible veggoverflate ikke i tilstrekkelig grad egnet for høye belastninger. Heat-insulating ceramic fiber bodies of refractory fibers, organic or inorganic binder with on the one hand low strength and high compressibility and on the other hand elevated values for strength, density and form resistance are known. Thus, in West German specification document 1274490, a combustion chamber for ovens is described which has been formed by shaping fiber mass to which binder has been added and where the binder concentration should decrease over the cross-section of the wall. Suitable binders include clays, alkali silicates, aluminum phosphate or colloidal silicon dioxide in a proportion by weight of 5-35%, optimally 10%. However, due to its dense, hard wall surface and the overlying soft, flexible wall surface, the fiber body is not sufficiently suitable for high loads.
Ved fremgangsmåten ifølge vest-tysk utlegningsskrift 2732387 skal mineralfiberplaten som på forhånd er blitt bundet med et organisk plastbindemiddel, fastnes ved impreg-nering med en vandig oppslemning av en bindeleire og derpå følgende varmebehandling. Dessuten er fibersprøytemasser kjente fra vest-tysk utlegningsskrift 2618813 som foruten en større andel av uorganiske fibre inneholder små andeler av bindemiddel hhv. andre uorganiske tilsetningsmidler og dessuten et kjemisk tilsatsbindemiddel, idet fibersprøytemassene inneholder 5-20 vekt% av en olje for å unngå støvdannelse. In the method according to West German specification document 2732387, the mineral fiber board, which has previously been bound with an organic plastic binder, is to be fixed by impregnation with an aqueous slurry of a binding clay and then the following heat treatment. In addition, fiber spray compounds are known from West German specification document 2618813 which, in addition to a larger proportion of inorganic fibers, contain small proportions of binder or other inorganic additives and, furthermore, a chemical additive binder, the fiber spray compositions containing 5-20% by weight of an oil to avoid dust formation.
Når disse fibersprøytemasser anvendes, er det uttrykkelig angitt at de uorganiske fibre, som f.eks. stenull, skal anvendes i oppløsnet tilstand. When these fiber spray compounds are used, it is expressly stated that the inorganic fibres, such as e.g. stone wool, must be used in a dissolved state.
Det tas ved oppfinnelsen sikte på å fremstille ildbestandige eller ildfaste masser, eventuelt i form av et fiberkornmateriale, som inneholder keramiske fibre, som kan anvendes som hovedbestanddel i fibersprøytemasser eller som tilslag ved fremstilling av ildfaste masser eller ild faste formdeler og oppviser spesielt gode egenskaper. Dersom massen foreligger i fuktig tilstand, kan den anvendes som sådan. The invention aims to produce fire-resistant or refractory masses, possibly in the form of a fiber granule material, which contains ceramic fibers, which can be used as the main component in fiber-sprayed masses or as an aggregate in the production of refractory masses or fire-resistant shaped parts and which exhibits particularly good properties. If the mass is available in a moist state, it can be used as such.
Denne oppgave løses ved den foreliggende fremgangsmåte som er nærmerekarakteriserti krav 1. This task is solved by the present method, which is further characterized in claim 1.
Fordelaktige utførelsesformer av den foreliggednde fremgangsmåte er beskrevet i kravene 2-6. Advantageous embodiments of the present method are described in claims 2-6.
Oppfinnelsen angår dessuten anvendelse av de ved den foreliggende fremgangsmåte fremstilte kornformige, ildbestandige eller ildfaste materialer, spesielt i fibersprøyte-masser' eller som tilslag ved fremstilling av ildfaste masser eller ildfaste formdeler. The invention also relates to the use of the granular, fire-resistant or refractory materials produced by the present method, especially in fiber-sprayed masses' or as aggregates in the production of refractory masses or refractory molded parts.
De ved den foreliggende fremgangsmåte anvendte keramiske fibre eller mineralfibre kan være alle vanlige fibre av denne type, f.eks. stenull eller fibre på basis av aluminiumsilikat med spesielt høyt A^O^-innhold innen området fra 45 til 95 vekt%. Selvfølgelig kan også blandinger av forskjellige keramiske fibre anvendes. The ceramic fibers or mineral fibers used in the present method can be all ordinary fibers of this type, e.g. rock wool or fibers based on aluminum silicate with a particularly high A^O^ content in the range from 45 to 95% by weight. Of course, mixtures of different ceramic fibers can also be used.
Keramiske fibre leveres i form av en løs ull som imidlertid delvis er sterkt sammenpresset. For fremstilling av massene ifølge oppfinnelsen kan disse fibre med fordel anvendes i oppsluttet tilstand, hvorved det er mulig å få Ceramic fibers are supplied in the form of a loose wool, which is, however, partly strongly compressed. For the production of the pulps according to the invention, these fibers can advantageously be used in a closed state, whereby it is possible to obtain
en bedre binding av fibrene ved hjelp av det anvendte bindemiddel og en utmerket fukting av overflaten med væsker i lavest mulig konsentrasjon. For oppslutning av fibrene kan blandeaggregater med hurtigroterende blandehoder, såkalte turboblandeapparater, anvendes, hvorved de større agglomerater som foreligger i de leverte fibre, blir oppsluttet uten at fibrene derved blir utillatelig sterkt knust. a better binding of the fibers by means of the binder used and an excellent wetting of the surface with liquids in the lowest possible concentration. Mixing aggregates with fast-rotating mixing heads, so-called turbo mixers, can be used for mixing the fibers, whereby the larger agglomerates present in the delivered fibers are mixed without the fibers being unacceptably severely crushed.
Den ved den foreliggende fremgangsmåte anvendteThe in the present method used
leire kan være en vanlig leire eller en spesiell bindeleire, f.eks. bentonitt. Denne leire blir vanligvis anvendt i en mengde av 5-20 vektdeler pr. 100 vektdeler av de keramiske fibre, fortrinnsvis 8-15 vektdeler leire. clay can be a normal clay or a special binding clay, e.g. bentonite. This clay is usually used in an amount of 5-20 parts by weight per 100 parts by weight of the ceramic fibers, preferably 8-15 parts by weight of clay.
De bestanddeler som eventuelt foreligger i de ved den foreliggende fremgangsmåte fremstilte masser og som ut-gjøres av meget findelt Al2°3og/eller meget findelt SiO,, og/eller aluminiumhydroxyder og/eller meget findelt magnesiumoxyd og/eller meget findelt titandioxyd og/eller meget findelt kromoxyd, er kjente anvendte bestanddeler innen området ildfaste produkter. Med det her anvendte ut-trykk "meget findelt" i forbindelse med de ovennevnte bestanddeler skal det forstås at disse bestanddeler foreligger i meget finmalt eller også i kolloidal tilstand. Spesielt når slike materialer som foreligger i kolloidal tilstand som kolloidalt SiC>2hhv. kolloidalt aluminiumoxyd anvendes, er det mulig å anvende bare små mengder av bindemiddel, nemlig nær den nedre grenseverdi av 1,5 vektdeler av et organisk bindemiddel og 1 vektdel av et fosfatbindemiddel. Anvendelsen av tilnærmet like antall vektdeler fosfatbindemiddel og methylcellulose som organisk bindemiddel er spesielt foretrukken. Det er. også spesielt fordelaktig å anvende en blanding av leire 'og én eller flere av de ovennevnte andre meget findelte ildfaste bestanddeler, idet mengden av disse andre meget findelte ildfaste bestanddeler vanligvis utgjør 1-3 vektdeler og resten består' av leire, slik at en mengde av 5-20 vektdeler av de ildfaste bestanddeler samlet blir tilsatt. The components which are possibly present in the masses produced by the present method and which consist of very finely divided Al2°3 and/or very finely divided SiO, and/or aluminum hydroxides and/or very finely divided magnesium oxide and/or very finely divided titanium dioxide and/or very finely divided chromium oxide, are known components used in the field of refractory products. With the expression "very finely divided" used here in connection with the above-mentioned components, it is to be understood that these components are present in a very finely ground or also in a colloidal state. Especially when such materials that exist in a colloidal state such as colloidal SiC>2 or colloidal aluminum oxide is used, it is possible to use only small amounts of binder, namely close to the lower limit of 1.5 parts by weight of an organic binder and 1 part by weight of a phosphate binder. The use of an approximately equal number of parts by weight of phosphate binder and methylcellulose as organic binder is particularly preferred. It is. also particularly advantageous to use a mixture of clay 'and one or more of the above-mentioned other very finely divided refractory components, the quantity of these other very finely divided refractory components usually being 1-3 parts by weight and the rest consisting' of clay, so that a quantity of 5-20 parts by weight of the refractory components in total are added.
Ved den foreliggende fremgangsmåte anvendes et organisk bindemiddel. For dette formål kan alle organiske bindemidler anvendes som er vanlig anvendt innen dette område, f.eks. methylcellulose, sulfittavlut eller melasse. Disse organiske bindemidler tilsettes vanligvis i form av en oppløsning i vann eller også delvis i fast form, og dette gjelder spesielt når methylcellulose anvendes. Da 0,5-14 vektdeler av det organiske bindemiddel anvendes pr. 100 vektdeler av keramiske fibre og da methylcellulose vanligvis anvendes i form av en 5%-ig oppløsning fordi høyere prosentige opp-løsninger får en for høy viskositet, sil ellers den vann-mengde som innføres ved tilsetningen av oppløsningen av det organiske bindemiddel bli for stor, slik at spesielt når methylcellulose anvendes, vil inntil 50 vekt% av dette In the present method, an organic binder is used. For this purpose, all organic binders that are commonly used in this area can be used, e.g. methylcellulose, sulphite liquor or molasses. These organic binders are usually added in the form of a solution in water or also partly in solid form, and this applies in particular when methylcellulose is used. Since 0.5-14 parts by weight of the organic binder are used per 100 parts by weight of ceramic fibers and as methylcellulose is usually used in the form of a 5% solution because higher percentage solutions have too high a viscosity, otherwise the amount of water introduced when adding the solution of the organic binder will be too large , so that especially when methylcellulose is used, up to 50% by weight of this
• organiske bindemiddel bli tilsatt i fast form.• organic binders are added in solid form.
Ved den foreliggende fremgangsmåte blir dessutenIn the present method, moreover,
1-8 vektdeler, fortrinnsvis 2-6 vektdeler, av et fosfatbindemiddel, idet de angitte mengder er basert på vektdeler 1-8 parts by weight, preferably 2-6 parts by weight, of a phosphate binder, the quantities indicated being based on parts by weight
^ 2°s i ^et angjeldende bindemiddel, anvendt. Eksempler på slike fosfatbindemidler er natriumpolyfosfat med en poly-merisasjonsgrad av n—4, fortrinnsvis med en polymerisasjons-grad av 6-10. Dette natriumpolyfosfat blir vanligvis anvendt i oppløst tilstand. Et ytterligere fosfatbindemiddel er monoaluminiumfosfat som er et vanlig handelsprodukt både i fast, malt tilstand eller som vandig oppløsning, spesielt som en oppløsning 'med 50 vekt%. Fosfatbindemidlet kan tilsettes samlet i form av en oppløsning eller det kan tilsettes delvis i oppløst og delvis i fast form. ^ 2°s in ^a relevant binder, used. Examples of such phosphate binders are sodium polyphosphate with a degree of polymerization of n-4, preferably with a degree of polymerization of 6-10. This sodium polyphosphate is usually used in a dissolved state. A further phosphate binder is monoaluminium phosphate which is a common commercial product both in solid, ground form or as an aqueous solution, especially as a 50% by weight solution. The phosphate binder can be added as a whole in the form of a solution or it can be added partly in dissolved and partly in solid form.
Ved fremstillingen blir de keramiske fibre blandetDuring production, the ceramic fibers are mixed
i et blandeapparat, vanligvis i et trommelblandeapparat eller i et plogskjærblandeapparat, med 10-40 vektdeler vann pr. 100 vektdeler av de tilsatte keramiske fibre, idet vannet med fordel blir påsprøytet. in a mixing device, usually in a drum mixing device or in a ploughshare mixing device, with 10-40 parts by weight of water per 100 parts by weight of the added ceramic fibres, the water being advantageously sprayed on.
Ved den foreliggende fremgangsmåte blir samlet inntil ca. 100' vektdeler vann tilsatt, delvis i trinn a) og delvis i trinn c), ved tilsetningen av det organiske bindemiddel i oppløst tilstand og av fosfatbindemidlet dersom dette tilsettes i oppløst tilstand. In the present method, up to approx. 100 parts by weight of water added, partly in step a) and partly in step c), with the addition of the organic binder in a dissolved state and of the phosphate binder if this is added in a dissolved state.
Efter blanding inntil homogen tilstand er blitt nådd, blir leiren og/éIler de andre ovennevnte meget findelte ildfaste bestanddeler som foreligger i tørr, findelt til- ' stand, tilsatt til denne blanding i blandeapparatet og likeledes homogent innblandet. Derved vil leiren og/eller de andre ovennevnte findelte ildfaste bestanddeler hefte til de fuktede fibres overflate. I dette trinn blir likeledes eventuelt anvendt fast organisk bindemiddel tilsatt. Derefter blir oppløsningen av det organiske bindemiddel på-ført på den på forhånd dannede blanding, likeledes oppløs-ningen av fosfatbindemidlet, idet de eventuelt tilsatte andeler av fast,, uorganisk bindemiddel her innføres i blandeapparatet samtidig med oppløsningen av bindemidlet eller efter tilsetningen av dette bindemiddel. After mixing until a homogeneous state has been reached, the clay and/or the other above-mentioned very finely divided refractory components which are present in a dry, finely divided state are added to this mixture in the mixing apparatus and likewise mixed in homogeneously. Thereby, the clay and/or the other above-mentioned finely divided refractory components will adhere to the surface of the moistened fibres. In this step, any solid organic binder used is also added. Then the solution of the organic binder is applied to the previously formed mixture, as well as the solution of the phosphate binder, with the possibly added proportions of solid, inorganic binder here being introduced into the mixing apparatus at the same time as the dissolution of the binder or after the addition of this binder .
Derpå blir fortsatt en homogen blanding foretatt, idet denne blandeprosess kan kreve inntil 30 minutter. Then a homogeneous mixture is still made, as this mixing process can require up to 30 minutes.
Den derved erholdte masse kan anvendes som sådan, ) f.eks. at den kan leveres til brukeren i form av stampe- The resulting mass can be used as such, ) e.g. that it can be delivered to the user in the form of stamp-
masse fylt i fat.pulp filled in barrels.
Alternativt kan denne fuktige masse imidlertid også omvandles til et fiberkornmateriale, som nærmere beskrevet nedenfor. Efter den homogene blanding blir deri ferdige blanding tørket, vanligvis ved temperaturer over 100 oC, f.eks. ved 110-180°C. Tørketiden er fortrinnsvis 2-24 timer. Alternatively, however, this moist mass can also be converted into a fibrous grain material, as described in more detail below. After the homogeneous mixture, the finished mixture is dried, usually at temperatures above 100 oC, e.g. at 110-180°C. The drying time is preferably 2-24 hours.
Derefter blir den på denne måte erholdte faste kake oppdelt i en vanlig oppdelingsanordning, f.eks. i en hammer-mølle eller en valseknuser, til den ønskede Icornstørrelse. Oppdelingen utføres vanligvis inntil en kornstø£relse av maksimalt 8 mm, fortrinnsvis 6 mm, men det er likeledes mulig å innstille på en maksimal kornstørrelse av 2 eller 3 mm alt efter det ønskede anvendelsesformål for det fremstilte materiale. Det er alt efter anvendelsesformålet også mulig å sikte ut ønskede kornstørrelsesfraksjoner fra det ved den foreliggende fremgangsmåte fremstilte materiale. The solid cake obtained in this way is then divided in a conventional dividing device, e.g. in a hammer-mill or a roller crusher, to the desired Icorn size. The division is usually carried out up to a grain size of a maximum of 8 mm, preferably 6 mm, but it is also possible to set a maximum grain size of 2 or 3 mm, depending on the desired application of the material produced. Depending on the purpose of application, it is also possible to sift out desired grain size fractions from the material produced by the present method.
Det ved den foreliggende fremgangsmåte erholdte kornformige materiale har en densitet av 0,12-0,50 og oppviser en samlet porøsitet av 95-80%. The granular material obtained by the present method has a density of 0.12-0.50 and exhibits a total porosity of 95-80%.
På grunn av den høye andel av organisk bindemiddel i det kornformige materiale oppnås det at det kornformige materiale får en lavere densitet, dvs. at virkningen av densitetsøkningen som skyldes tilsetningen av leire og/eller de andre meget findelte ildfaste bestanddeler, enten blir opphevet eller vidtgående kompensert. Ved anvendelse av det ved den foreliggende fremgangsmåte erholdte, kornformige materiale, Due to the high proportion of organic binder in the granular material, it is achieved that the granular material has a lower density, i.e. that the effect of the increase in density due to the addition of clay and/or the other very finely divided refractory components is either canceled or far-reaching compensated. When using the granular material obtained by the present method,
dvs. straks dette er blitt oppvarmet til høyere temperaturer, som f .eks. over 500°C, brenner det i dette inneholdte organiske bindemiddel fullstendig eller delvis opp alt efter den opp-nådde temperatur, slik at et ennu mer porøst produkt fås som oppviser spesielt gode varmeisolasjonsegenskaper. i.e. as soon as this has been heated to higher temperatures, such as above 500°C, the organic binder contained in this burns completely or partially depending on the temperature reached, so that an even more porous product is obtained which exhibits particularly good thermal insulation properties.
Det er en ytterligere fordel ved det ved den foreliggende fremgangsmåte fremstilte kornformige materiale at ' efter at det organiske bindemiddel er blitt fullstendig eller delvis utbrent, bevares de elastiske egenskaper til de keramiske fibre i de enkelte korn, slik at et materiale for hvilket det ved den foreliggende fremgangsmåte fremstilte Tcornformige materiale anvendes som tilslag, får del vis elastiske egenskaper da enke<l>tkornene som sådanne holder seg elastiske. Dette oppnås ved at ved den foreliggende fremgangsmåte blir først leiren og/eller de andre meget findelte ildfaste bestanddeler påført på de fuktede fibre og at først derefter blir fosfatbindemidlet tilsatt, slik at fosfatbindemidlet vidtgående blir tilbake på overflaten av de små fiberdeler som er tilnærmet omhyllet med leire, hvorved en kjerne som inneholder intet eller bare en liten mengde av fosfatbindemiddel blir tilbake i kornets indre, slik at fibrene som sådanne holder seg elastiske. It is a further advantage of the granular material produced by the present method that 'after the organic binder has been completely or partially burned out, the elastic properties of the ceramic fibers in the individual grains are preserved, so that a material for which it Tcorn-shaped material produced by the present method is used as aggregate, partly acquires elastic properties as the single grains as such remain elastic. This is achieved by the fact that, in the present method, the clay and/or the other very finely divided refractory components are first applied to the moistened fibers and that only then is the phosphate binder added, so that the phosphate binder is largely left on the surface of the small fiber parts which are roughly enveloped with clay, whereby a core containing no or only a small amount of phosphate binder remains in the interior of the grain, so that the fibers as such remain elastic.
Det ved den foreliggende fremgangsmåte fremstilte kornformige materiale kan, som beskrevet ovenfor, spesielt fordelaktig anvendes i fibersprøytemasser. For dette formål blir materialet tilført i tørr tilstand til et sprøytemunn-stykke på hvis hode det blir blandet med vann og eventuelt ytterligere bindemiddel eller tilsetningsmidler, eller en. oppslemning av det -kornformige materiale med vann og eventuelt ytterligere tilsetningsmidler blir fremstilt og sprøytet. Slike vanlige ytterligere tilsetningsmidler kan f.eks. være hydraulisk bindende bindemidler, som Portland-sement eller aluminiumoxydsement eller også andre tilsetningsmidler. Dessuten kan også keramiske fibre og vann sprøytes sammen med et slikt kornformig materiale fremstilt ved den foreliggende fremgangsmåte. The granular material produced by the present method can, as described above, be particularly advantageously used in fiber injection materials. For this purpose, the material is supplied in a dry state to a spray nozzle on the head of which it is mixed with water and any additional binder or additives, or a. slurry of the -granular material with water and possibly further additives is prepared and sprayed. Such common additional additives can e.g. be hydraulic binding binders, such as Portland cement or aluminum oxide cement or also other additives. In addition, ceramic fibers and water can also be sprayed together with such a granular material produced by the present method.
Når det kornformige materiale fremstilt ved den foreliggende fremgangsmåte anvendes i fibersprøytemasser, fås den fordel at disse fibersprøytemasser trenger mindre vann enn vanlige fibersprøytemasser når de påsprøytes, idet vann-besparelsen kan utgjøre inntil 50%. When the granular material produced by the present method is used in fiber injection materials, the advantage is that these fiber injection materials need less water than ordinary fiber injection materials when they are sprayed on, as the water saving can amount to up to 50%.
Den ved den foreliggende fremgangsmåte fremstilte fuktige masse kan med spesiell fordel anvendes som elastisk eller eftergivende fyllmasse for utvidbare fuger. En slik anvendelse er spesielt fordelaktig mellom stener i en roterovn da denne masse delvis beholder sine elastiske egenskaper ved anvendelsestemperaturene. Det er en ytterligere fordel at de keramiske fibre i motsetning til asbestfibre som ofte anvendes i slike fugematerialer, ikke er sunnhetsskadelige. Ved denne anvendelse blir massen fortrinnsvis pakket med den ønskede tykkelse, f.eks. en tykkelse av 2-8 mm, mellom plastfolier og kan legges inn som plastisk skikt sammen med de omhyllende folier som mellomlegg, dvs. fyllmasse for utvidbare fuger, ved muring av en ovn. Det kan da dreie seg f.eks. om en endeløs rull av det plastiske masseskikt som er pakket inn mellom plastfolier, men det kan også dreie seg om på forhånd tilberedte og dimensjons-messig fastlagte enkeltpakninger av den plastiske masse i skiktform som er pakket mellom plastfoliene eller eventuelt også er innsveiset i disse. De ønskede lengder kan av-skjæres fra rullen. The moist mass produced by the present method can be used with particular advantage as an elastic or resilient filler for expandable joints. Such an application is particularly advantageous between stones in a rotary kiln as this mass partially retains its elastic properties at the application temperatures. It is a further advantage that the ceramic fibers, in contrast to asbestos fibers which are often used in such joint materials, are not harmful to health. In this application, the mass is preferably packed with the desired thickness, e.g. a thickness of 2-8 mm, between plastic foils and can be inserted as a plastic layer together with the enveloping foils as an intermediate layer, i.e. filler for expandable joints, when bricking an oven. It can then concern e.g. about an endless roll of the plastic mass layer that is wrapped between plastic foils, but it can also be about pre-prepared and dimension-wise fixed individual packs of the plastic mass in layer form that is packed between the plastic foils or possibly also welded into them. The desired lengths can be cut from the roll.
Oppfinnelsen vil bli nærmere beskrevet ved hjelp av de nedenstående eksempler. The invention will be described in more detail using the examples below.
I eksemplene ble keramiske fibre A og B anvendt som hadde følgende kjemiske sammensetning: In the examples, ceramic fibers A and B were used which had the following chemical composition:
Eksempler 1- 3 Examples 1-3
De følgende satser ble anvendt, idet tallene angir vektdeler: The following rates were used, the numbers indicating parts by weight:
Først ble de keramiske fibre tilført til et blandeapparat av typen Eirich, hvorefter de angitte vannmengder ble påsprøytet og blanding ble foretatt i 10 minutter. Derefter ble bentonitten, Al^O^ hhv. TiC>2 og den faste methylcellulose hhv. den faste sulfittavlut påført på denne blanding og innblandet i løpet av ytterligere 8 minutter. Derefter ble de angitte oppløsninger av sulfittavlut hhv. methylcellulose hvortil de findelte, faste fosfatbindemidler var blitt tilsatt, påsprøytet i blandeapparatet, og blanding ble foretatt i ytterligere 10 minutter. First, the ceramic fibers were fed into an Eirich-type mixing apparatus, after which the specified amounts of water were sprayed on and mixing was carried out for 10 minutes. Then the bentonite, Al^O^ or TiC>2 and the solid methylcellulose or the solid sulphite liquor applied to this mixture and mixed in for a further 8 minutes. Then the specified solutions of sulphite precipitate or methylcellulose to which the finely divided, solid phosphate binders had been added, was sprayed into the mixer, and mixing was carried out for a further 10 minutes.
Den erholdte, sprøe blanding ble fjernet fra blandeapparatet. The resulting friable mixture was removed from the mixer.
Den sprøe blanding ifølge eksemplene 1 og 2 ble tørket i 6 timer ved 120°C. og derefter knust til en maksimal korn-størrelse av 4 mm i en valseknuser. Det sprøe produkt ifølge eksempel 3 ble anvendt som plastisk masse, og for det formål ble det strøket ut til et plastisk 5 mm tykt skikt som ble pakket inn i plastfolier. Et slikt plastisk skikt som er innpakket i plastfolier, kan med godt resultat anvendes som fyllmateriale for utvidbare fuger mellom brente stener i roterovner ved oppbygningen av slike roterovner. The brittle mixture according to examples 1 and 2 was dried for 6 hours at 120°C. and then crushed to a maximum grain size of 4 mm in a roller crusher. The brittle product according to example 3 was used as a plastic mass, and for that purpose it was spread into a plastic 5 mm thick layer which was wrapped in plastic foil. Such a plastic layer, which is wrapped in plastic foil, can be used with good results as filling material for expandable joints between burnt stones in rotary kilns during the construction of such rotary kilns.
De fastslåtte egenskaper for produktene var som følger: The determined characteristics of the products were as follows:
Eksempler 4- 6 Examples 4-6
Arbeidsmetoden ifølge eksemplene 1-3 ble gjentatt, men med den forskjell at oppsluttede, keramiske fibre B ble anvendt. Fibrene ble oppsluttet i et turboblandeapparat av typen Drais, og for dette formål ble fibrene behandlet i 5 minutter i dette hurtigblandeapparat som var utstyrt med knivhoder. De oppsluttede fibre B ble derefter overført til et blandeapparat av typen Eirich i hvilket de ytterligere bestanddeler ble tilsatt i overensstemmelse med de satser som er angitt:i eksemplene 1-3. The working method according to examples 1-3 was repeated, but with the difference that entangled ceramic fibers B were used. The fibers were suspended in a Drais type turbo mixer, and for this purpose the fibers were processed for 5 minutes in this rapid mixer equipped with knife heads. The entangled fibers B were then transferred to an Eirich type mixer in which the additional ingredients were added in accordance with the rates indicated in Examples 1-3.
Fra produktene ifølge eksemplene 4 og 5 ble likeledes et fiberkornmateriale fremstilt, og produktet ifølge eksempel From the products according to examples 4 and 5, a fibrous grain material was also produced, and the product according to example
.6 ble anvendt som stampemasse..6 was used as tamping compound.
Egenskapene som ble fastslått for produktene, var som følger: The properties determined for the products were as follows:
Claims (9)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3105531A DE3105531C2 (en) | 1981-02-16 | 1981-02-16 | Process for the production of fire-resistant or refractory masses, masses produced by the process and their use |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO820438L true NO820438L (en) | 1982-08-17 |
Family
ID=6124954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO820438A NO820438L (en) | 1981-02-16 | 1982-02-15 | PROCEDURE FOR THE MANUFACTURE OF SOIL-RESISTANT OR SOIL-STAINED MATERIALS CONTAINING CERAMIC FIBERS |
Country Status (14)
| Country | Link |
|---|---|
| JP (1) | JPS57179079A (en) |
| BE (1) | BE892071A (en) |
| DD (1) | DD202040A5 (en) |
| DE (1) | DE3105531C2 (en) |
| ES (1) | ES509208A0 (en) |
| FR (1) | FR2499971A1 (en) |
| GB (1) | GB2093014B (en) |
| IT (1) | IT8247785A0 (en) |
| NL (1) | NL8200599A (en) |
| NO (1) | NO820438L (en) |
| PL (1) | PL235104A1 (en) |
| SE (1) | SE8200856L (en) |
| YU (1) | YU31882A (en) |
| ZA (1) | ZA821013B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1985001676A1 (en) * | 1983-10-17 | 1985-04-25 | Manville Service Corporation | Insulation system |
| US4770707A (en) * | 1984-10-12 | 1988-09-13 | Manville Corporation | Method for forming a layer of refractory fibers on a surface and material produced thereby |
| US4673594A (en) * | 1984-10-12 | 1987-06-16 | Manville Service Corporation | Method for applying a layer of fiber on a surface and a refractory material produced thereby |
| EP0213707A3 (en) * | 1985-08-26 | 1988-06-22 | Stemcor Corporation | Spray-applied ceramic fiber insulation |
| DE3543311A1 (en) * | 1985-12-07 | 1987-06-11 | Didier Werke Ag | DEVICE FOR JOINING PARTS |
| DE3878292D1 (en) * | 1987-04-24 | 1993-03-25 | Arturo Broggini | CLAY MATERIAL AND METHOD FOR PRODUCING THE SAME. |
| US4833025A (en) * | 1988-03-07 | 1989-05-23 | Manville Corporation | Method for applying a refractory layer on a surface and the layer produced thereby |
| DE4025956A1 (en) * | 1990-08-16 | 1992-02-20 | Didier Werke Ag | FIREPROOF FILLING OF A RING GAP IN A METALLURGICAL TANK |
| FI920761A (en) * | 1991-03-13 | 1992-09-14 | Rockwool Mineralwolle | MINERALYLLEPRODUKT |
| US5786031A (en) * | 1995-06-07 | 1998-07-28 | Engelhard Corporation | Barrier for a metal substrate |
| ES2193864B1 (en) * | 2002-01-16 | 2004-10-16 | Neos Ceramica E Investigacion, S.L. | CERAMIC PASTA WITH NON-CONVENTIONAL FORMULATION WITH CONTENTS IN PHOSPHORUS OVER 2% BY WEIGHT. PROCEDURE FOR THEIR ELABORATION AND ADVANTAGES. |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3336716A (en) * | 1963-07-10 | 1967-08-22 | Johns Manville | Furnace combustion chamber with a transverse composition differential |
| DE2230429A1 (en) * | 1972-06-22 | 1974-01-10 | Vyzk Ustav Stavebnich Hmot V B | Large fibre-board prodn - using a starch-phosphoric acid react prod as binder |
-
1981
- 1981-02-16 DE DE3105531A patent/DE3105531C2/en not_active Expired
-
1982
- 1982-02-01 ES ES509208A patent/ES509208A0/en active Granted
- 1982-02-05 JP JP57016457A patent/JPS57179079A/en active Pending
- 1982-02-09 BE BE0/207263A patent/BE892071A/en not_active IP Right Cessation
- 1982-02-12 IT IT8247785A patent/IT8247785A0/en unknown
- 1982-02-12 SE SE8200856A patent/SE8200856L/en not_active Application Discontinuation
- 1982-02-15 NO NO820438A patent/NO820438L/en unknown
- 1982-02-15 GB GB8204318A patent/GB2093014B/en not_active Expired
- 1982-02-15 DD DD82237421A patent/DD202040A5/en unknown
- 1982-02-15 FR FR8202451A patent/FR2499971A1/en active Pending
- 1982-02-15 YU YU00318/82A patent/YU31882A/en unknown
- 1982-02-16 NL NL8200599A patent/NL8200599A/en not_active Application Discontinuation
- 1982-02-16 PL PL23510482A patent/PL235104A1/xx unknown
- 1982-02-16 ZA ZA821013A patent/ZA821013B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE3105531A1 (en) | 1982-09-02 |
| IT8247785A0 (en) | 1982-02-12 |
| GB2093014B (en) | 1984-09-05 |
| NL8200599A (en) | 1982-09-16 |
| ZA821013B (en) | 1983-01-26 |
| GB2093014A (en) | 1982-08-25 |
| ES8304899A1 (en) | 1983-04-01 |
| FR2499971A1 (en) | 1982-08-20 |
| SE8200856L (en) | 1982-08-17 |
| PL235104A1 (en) | 1982-10-11 |
| ES509208A0 (en) | 1983-04-01 |
| YU31882A (en) | 1985-04-30 |
| BE892071A (en) | 1982-05-27 |
| JPS57179079A (en) | 1982-11-04 |
| DD202040A5 (en) | 1983-08-24 |
| DE3105531C2 (en) | 1984-10-04 |
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