BE452015A - - Google Patents

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Publication number
BE452015A
BE452015A BE452015DA BE452015A BE 452015 A BE452015 A BE 452015A BE 452015D A BE452015D A BE 452015DA BE 452015 A BE452015 A BE 452015A
Authority
BE
Belgium
Prior art keywords
silicon
stones
siliceous
ferro
stone
Prior art date
Application number
Other languages
French (fr)
Publication of BE452015A publication Critical patent/BE452015A/fr

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Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/14Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silica

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Products (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Description

       

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  Procédé pour la fabrication de pierres siliceuses. 



   Il est connu de réparer des fours et des foyers en utilisant des masses qui consistent ou exclusivement ou partiellement de matières combustibles - par exemple Al, Si, Mg- pouvant servir après leur oxydation comme matières réfractaires soit seules, soit en combinaison avec d'au- tres oxydes. Ce procédé facilite la réparation de fours industriels par le fait que l'utilisation de telles masses donne lieu à l'oxydation des métaux sous développement de chaleur, grâce à quoi on assure un collage parfait de la masse aux points qu'il s'agit de réparer. 



   L'objet de l'invention est un procédé pour la fabrication de pierres siliceuses particulièrement résis- tantes, dans lequel,on ajoute du ferro-silicium finement hroyé, à la masse dont les pierres sont moulées et ensuite cuites. Le ferro-silicium ajouté s'oxyde pendant la cuis- son subséquente des pierres, c'est-à-dire avant l'emploi 

 <Desc/Clms Page number 2> 

 
 EMI2.1 
 de celles-ci. Il s'est révélé ,étV2.nt8;eLl:: d'ajouter au. ferro-silic iurn de l'ordre de ranc.ear de lL à 10 c::vW'on:, par exemple de 5 % environ, pour une teneur du ferro- silicium en silicii;,a- de plus de 90 ;... 



  CO.i.:le résultat surprenant, les 1;i8I'j;] : 1 s :: fabriquées cn'u montre, dsns des fours L.Ótf.llll1",j."ll¯G0, une durabilité essentiellement supérieure .'.. cellL.:: .,J,- iuellement obtenue avec des pierres siliceuses. L'.. durc- bilité particulièrement favorable de ces pierres esu ¯ vc- oablement due e au fait qu'aussi bien le silicium 't'O J-3 fer du ferro-siliciura favorisent la '\;l',-l 11::; for ... ':;:i CH, ;.¯ tri- dymite par suite d'un effet ca-calytique, reu"c être ,..¯¯ à ce '-lue l'oxydation du silicium , , a ; .... n lieu ;.cr:c, : é 1. cuisson des pierres, et l'8.8;riJ.nà,isse.'"8,C:'c de :ol;, ¯¯ 1'- férente, déterminent la formation d'une pierre silicc-use comportant une densité plus grande qu'en cas ci' =- -;; :38-C <: :1 l'addition de r'e3i. 



  Pour réaliser une économie en  .ewvo-.i,ic;..:.. ;rL est avantageux de ne préparer en la :i''-;,;0e ¯.,.¯i. c: c;v,. 1. partie de lc pierre uLl7¯ est pe:Cid2.n' .i 1 ' 1; v :.>. gj ce ' c ::; . n :1 vers le feu. La par tie éloignée (;.u feu eu lY-"' L'uitc ¯.:o :;.. : o ù - licitée de la pierre siliceuse peut être f';;1.t<; d'une . ,.:se siliceuse Habituelle ou de ¯.1cinâre valeur, --...tl lieu du Îerro-silici11L", on peut 2:,."lo:\'e:c (¯'ver::. .,....,...w aussi +:':....;".;....: netaux ou des ?11i8ges, tels que, ....:LCw>1::, ('u .,:.1(:'?.^1-¯ siliciuni. e v e n d i c a i c w . l / 1# r o c é à pour 1 1'; 1 iC. L Ov 1 : .':j¯c:... . ":-...- ceuses, caractérisé en ce qu'on ::.:)jOiJw-0 C''-.'' ï3â.¯., .:,i¯.. broyé à la niasse servant t 1 1,- ...1;7;C1Ca.¯ .:10:î ,.., . y i.(3;' .. 
 EMI2.2 
 siliceuses. 

 <Desc/Clms Page number 3> 

 



   2/ Procédé selon la revendication 1, caracté- risé en ce qu'on ajoute du ferro-silicium avec une teneur en silicium de plus de 90 %, en une   quantité   allant   jus-   qu'à 10   %   environ. 



   3/ Procédé selon les revendications 1 et 2, caractérisé en ce que, seule la. partie de la pierre siliceuse tournée pendant le service vrers   le foyer,   est composée de la   masse   décrite. 
 EMI3.1 
 



  ./ Procédé selon ires revenc.ic-t'ions 1 .. ü, - ractérisé en ce qu'on emploie 2;' lieu ciu fer:"o-'3ilichè¯J, du cale ium-silicium ou des allisges analogues.



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  Process for the manufacture of siliceous stones.



   It is known to repair furnaces and hearths using masses which consist or exclusively or partially of combustible materials - for example Al, Si, Mg - which can be used after their oxidation as refractory materials either alone or in combination with other - very oxides. This process facilitates the repair of industrial furnaces by the fact that the use of such masses gives rise to the oxidation of the metals under development of heat, thanks to which a perfect bonding of the mass at the points in question is ensured. to repair.



   The object of the invention is a process for the manufacture of particularly resistant siliceous stones, in which finely ground ferro-silicon is added to the mass from which the stones are molded and then fired. The ferro-silicon added oxidizes during the subsequent firing of the stones, that is to say before use.

 <Desc / Clms Page number 2>

 
 EMI2.1
 of these. It turned out, etV2.nt8; eLl :: to add to. ferro-silicium of the order of ranc.ear from lL to 10 c :: vW'on :, for example about 5%, for a silicon ferro-silicon content;, a- of more than 90 ;. ..



  CO.i.: the surprising result, the 1; i8I'j;]: 1 s :: manufactured as shown, in L.Ótf.llll1 ", j." Ll¯G0 ovens, essentially superior durability. '.. cellL. ::., J, - iually obtained with siliceous stones. The particularly favorable hardening of these stones is due to the fact that both the silicon 'O J-3 iron of the ferro-siliciura promote the' \ ', - l 11 ::; for ... ':;: i CH,; .¯ tri-dymite as a result of a ca-calytic effect, reu "c be, .. ¯¯ to this' -lue oxidation of silicon,, a; .... n place;. cr: c,: é 1. firing stones, and the 8.8; riJ.nà, isse. '"8, C:' c de: ol ;, ¯¯ 1'- ferente , determine the formation of a silicc-used stone having a greater density than in the case ci '= - - ;; : 38-C <:: 1 addition of r'e3i.



  To save in .ewvo-.i, ic; ..: ..; rL is advantageous not to prepare in la: i '' -;,; 0e ¯.,. ¯i. c: c; v ,. 1. part of the stone uLl7¯ is pe: Cid2.n '.i 1' 1; v:.>. gj this' c ::; . n: 1 towards the fire. The distant part (; .u feu eu lY- "'L'uitc ¯.: O:; ..: o ù - licit of the siliceous stone can be f' ;; 1.t <; of a., .: se siliceous Usual or of ¯.1cinar value, --... tl place of Îerro-silici11L ", we can 2:,." lo: \ 'e: c (¯'ver ::., .. .., ... w also +: ': ....; ".; ....: netaux or? 11i8ges, such as, ....: LCw> 1 ::, (' u., : .1 (: '?. ^ 1-¯ siliciuni. Evendicaicw. L / 1 # roc é to for 1 1'; 1 iC. L Ov 1:. ': J¯c: .... ": -. ..- ceuses, characterized in that ::. :) jOiJw-0 C '' -. '' ï3â.¯.,.:, ī .. mass-ground serving t 1 1, - .. .1; 7; C1Ca.¯.: 10: î, ..,. Y i. (3; '..
 EMI2.2
 siliceous.

 <Desc / Clms Page number 3>

 



   2 / A method according to claim 1, characterized in that ferro-silicon with a silicon content of more than 90% is added, in an amount of up to about 10%.



   3 / A method according to claims 1 and 2, characterized in that only the. part of the siliceous stone turned during the service towards the hearth, is composed of the described mass.
 EMI3.1
 



  ./ Method according to ires revenc.ic-t'ions 1 .. ü, - acterized in that one uses 2; ' place ciu iron: "o-'3ilichè¯J, wedge ium-silicon or similar allies.


    
BE452015D BE452015A (en)

Publications (1)

Publication Number Publication Date
BE452015A true BE452015A (en)

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Family Applications (1)

Application Number Title Priority Date Filing Date
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BE (1) BE452015A (en)

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