CA1094758A - Sealing and filling material for metallurgical applications - Google Patents
Sealing and filling material for metallurgical applicationsInfo
- Publication number
- CA1094758A CA1094758A CA306,227A CA306227A CA1094758A CA 1094758 A CA1094758 A CA 1094758A CA 306227 A CA306227 A CA 306227A CA 1094758 A CA1094758 A CA 1094758A
- Authority
- CA
- Canada
- Prior art keywords
- consumable
- compound
- sealing
- wetting solution
- filling material
- 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.)
- Expired
Links
Landscapes
- Sealing Material Composition (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A sealing and filling material for metallurgical applications is consumable wood fiber, a non-consumable material from the group consisting of finely ground fired clay, silicon carbide, magnesite, burned dolomite, alumina, ground limestone and fine sand particles and a wetting solution to bind such materials into a yieldable, shapeable compound, said wetting solution consisting of an aqueous solution of calcium chloride and phosphoric acid. This invention is distinguishable from others by reason of the inclusion of the consumable material therein and the ability of the material to be packaged if desired and/or used in a putty-like shapeable form to seal hot metal containing members to one another on a temporary basis so that the residue of the material can be easily removed for fast and easy resealing of the metal containing members for a subsequent use.
A sealing and filling material for metallurgical applications is consumable wood fiber, a non-consumable material from the group consisting of finely ground fired clay, silicon carbide, magnesite, burned dolomite, alumina, ground limestone and fine sand particles and a wetting solution to bind such materials into a yieldable, shapeable compound, said wetting solution consisting of an aqueous solution of calcium chloride and phosphoric acid. This invention is distinguishable from others by reason of the inclusion of the consumable material therein and the ability of the material to be packaged if desired and/or used in a putty-like shapeable form to seal hot metal containing members to one another on a temporary basis so that the residue of the material can be easily removed for fast and easy resealing of the metal containing members for a subsequent use.
Description
109'i758 Background of the !nvention (l) Field of the Invention:
This invention relates to ingot molds, stools for supporting them and material for sealing or filling cavities or openings between or in the same to facilitate the retention of hot metal therein.
(2~ Description of the Prior Art:
Prior materials have generally comprised mixtures of Zircon flour, china clay, liquid sodium silicate, Bentonite, soap powder or their equivalents and water as a wetting agent to form a putty-like consistency which can be used for the indicated purpose.
The present invention introduces a consumable material into the mixture which enables the same to have a predetermined lifetime and a self-destructing capability.
Summary of the Invention A sealing and filling material for metallurgical applications is disclosed which is formed of ceramic materials, suitable wetting agents and a consumable material, the amount of which and the size and shape of the shaped material when used in a hot metal application for example enables the material to have effective sealing and cavity filling characteristics during a predetermined period of time and the capability of partial self-destruction facilitating the freeing of the parts joined or filled and providing clean reuseable surfaces for a subsequent operation.
Description of the Preferred Embodiment A material suitable for use in closing gaps between ingot molds and supporting stools and the like during hot metal containing periods is formed of a mixture comprising from 8% to 10% of consumable wood 28 fiber, 45% to 50~ of finely ground fired clay, limestone or sand particles and 40~ to 47~ of a premixed wetting solution containing 60~ to 65~ water, 5~ to 15~ calcium chloride and 2~ to 20~ of phosphoric acid or the equivalent. The consumable wood fiber, finely ground fired clay and the wetting solution are mixed thoroughly so as to produce a compound of a putty-like consistency and the same positioned in a pre-shaped plastic or paper containers which may advantageously take the shape of relatively thin elongated narrow sections of the compound, wedge-shaped sections of the compound or simple containers of the compound, of various shapes which would correspond with the size and area of cavities in ingot molds and/or the stools on which they are usually positioned.
The material thus compounded and packaged retains its putty-like consistency and is thereby capable of being shaped by the registration of the parts of the ingot mold with respect to the stool so as to close any openings which would otherwise exist therebetween and which would permit the formation of a fin on the ingot which seriously complicates removing the ingot from the ingot mold as will be understood by those skilled in the art.
The compound disclosed herein may be advantageously modified by the addition of thermit, a mixture of finely divided metallic aluminum and one or more oxides such as iron which will when ignited produce extremely high temperatures as a result of the union of the aluminum with the oxygen of the oxide. The modified compound would comprise between about 50% to 70~ thermit and the balance comprising the consumable wood fiber, the finely ground fired clay and the premixed wetting solution in the same proportions as hereinbefore set forth.
Alternately the wetting solutions can be eliminated and the 28 consumable wood fiber, the finely ground fired clay and the thermit " 1094758 dry packed.
When the thermit is ignited a molten slag is formed in which the particulate refractory material is bound together by a matrix of the slag after the exothermic reaction. The compound thus exothermically reacts to advantageously fill the spaces between the ingot mold and a stool or a cavity in the stool or the ingot mold and produces a resultant material which is sufficiently ceramic that molten metal introduced into the ingot mold will not fuse thereto.
The consumable ingredient in the compound result in a predetermined life dependent upon the thickness of the compound in its environmental position and the amount of the consumable wood fiber in the compound so that the ingot mold and/or stool supporting the same have a desirable sealing and filling material during the containment of hot metal therein with the filling and sealing material partially self-destructing after the removal of the ingot or the like therefrom.
It will thus be seen that the sealing and filling material disclosed herein will in either of its forms result in a satisfactory blocking material to prevent leakage of hot metal from ingot molds and the like and it will occur to those skilled in the art that the material may be used in repairing heat eroded walls, frames, doors and the like as in connection with open hearths, heat treating installations and including BOF installations and in such applications the material may be positioned and held by the engagement of the adjoining or abutting surfaces of the articles or the material may be installed as by ramming with a pneumatic gun. In addition to the finely ground fired clay, used fire brick reduced to particulate form may be advantageously used and additional materials which are suitable include silicon carbide, magnesite, alumi-28 num silicates, burned dolomite, a1umina and various mixtures of these materials or the like. The particle size is not particularly critical and may run from finely ground to particles an eighth of an inch more or less.
A further modification in the material is useful particularly when the exothermic ingredients are employed as hereinbefore described.
Such a desirable sealing and filling compound would include the wood fiber or its equivalent, the finely ground fired clay or its equivalent, the thermit and a wetting agent such as ethyl alcohol which is compatible with the thermit and permits the desirable exothermic reaction.
Although but two embodiments of the present invention have been described, it will be apparent to those skilled in the art that various changes and modifications may be made therein without departing from the spirit of the invention.
This invention relates to ingot molds, stools for supporting them and material for sealing or filling cavities or openings between or in the same to facilitate the retention of hot metal therein.
(2~ Description of the Prior Art:
Prior materials have generally comprised mixtures of Zircon flour, china clay, liquid sodium silicate, Bentonite, soap powder or their equivalents and water as a wetting agent to form a putty-like consistency which can be used for the indicated purpose.
The present invention introduces a consumable material into the mixture which enables the same to have a predetermined lifetime and a self-destructing capability.
Summary of the Invention A sealing and filling material for metallurgical applications is disclosed which is formed of ceramic materials, suitable wetting agents and a consumable material, the amount of which and the size and shape of the shaped material when used in a hot metal application for example enables the material to have effective sealing and cavity filling characteristics during a predetermined period of time and the capability of partial self-destruction facilitating the freeing of the parts joined or filled and providing clean reuseable surfaces for a subsequent operation.
Description of the Preferred Embodiment A material suitable for use in closing gaps between ingot molds and supporting stools and the like during hot metal containing periods is formed of a mixture comprising from 8% to 10% of consumable wood 28 fiber, 45% to 50~ of finely ground fired clay, limestone or sand particles and 40~ to 47~ of a premixed wetting solution containing 60~ to 65~ water, 5~ to 15~ calcium chloride and 2~ to 20~ of phosphoric acid or the equivalent. The consumable wood fiber, finely ground fired clay and the wetting solution are mixed thoroughly so as to produce a compound of a putty-like consistency and the same positioned in a pre-shaped plastic or paper containers which may advantageously take the shape of relatively thin elongated narrow sections of the compound, wedge-shaped sections of the compound or simple containers of the compound, of various shapes which would correspond with the size and area of cavities in ingot molds and/or the stools on which they are usually positioned.
The material thus compounded and packaged retains its putty-like consistency and is thereby capable of being shaped by the registration of the parts of the ingot mold with respect to the stool so as to close any openings which would otherwise exist therebetween and which would permit the formation of a fin on the ingot which seriously complicates removing the ingot from the ingot mold as will be understood by those skilled in the art.
The compound disclosed herein may be advantageously modified by the addition of thermit, a mixture of finely divided metallic aluminum and one or more oxides such as iron which will when ignited produce extremely high temperatures as a result of the union of the aluminum with the oxygen of the oxide. The modified compound would comprise between about 50% to 70~ thermit and the balance comprising the consumable wood fiber, the finely ground fired clay and the premixed wetting solution in the same proportions as hereinbefore set forth.
Alternately the wetting solutions can be eliminated and the 28 consumable wood fiber, the finely ground fired clay and the thermit " 1094758 dry packed.
When the thermit is ignited a molten slag is formed in which the particulate refractory material is bound together by a matrix of the slag after the exothermic reaction. The compound thus exothermically reacts to advantageously fill the spaces between the ingot mold and a stool or a cavity in the stool or the ingot mold and produces a resultant material which is sufficiently ceramic that molten metal introduced into the ingot mold will not fuse thereto.
The consumable ingredient in the compound result in a predetermined life dependent upon the thickness of the compound in its environmental position and the amount of the consumable wood fiber in the compound so that the ingot mold and/or stool supporting the same have a desirable sealing and filling material during the containment of hot metal therein with the filling and sealing material partially self-destructing after the removal of the ingot or the like therefrom.
It will thus be seen that the sealing and filling material disclosed herein will in either of its forms result in a satisfactory blocking material to prevent leakage of hot metal from ingot molds and the like and it will occur to those skilled in the art that the material may be used in repairing heat eroded walls, frames, doors and the like as in connection with open hearths, heat treating installations and including BOF installations and in such applications the material may be positioned and held by the engagement of the adjoining or abutting surfaces of the articles or the material may be installed as by ramming with a pneumatic gun. In addition to the finely ground fired clay, used fire brick reduced to particulate form may be advantageously used and additional materials which are suitable include silicon carbide, magnesite, alumi-28 num silicates, burned dolomite, a1umina and various mixtures of these materials or the like. The particle size is not particularly critical and may run from finely ground to particles an eighth of an inch more or less.
A further modification in the material is useful particularly when the exothermic ingredients are employed as hereinbefore described.
Such a desirable sealing and filling compound would include the wood fiber or its equivalent, the finely ground fired clay or its equivalent, the thermit and a wetting agent such as ethyl alcohol which is compatible with the thermit and permits the desirable exothermic reaction.
Although but two embodiments of the present invention have been described, it will be apparent to those skilled in the art that various changes and modifications may be made therein without departing from the spirit of the invention.
Claims (4)
1. A sealing and filling material for metallurgical applications comprising a compound formed of 8% to 10% of consumable wood fiber, 45% to 50% of a non-consumable material from the group consisting of finely ground fired clay, silicon carbide, magnesite, burned dolomite, alumina, ground limestone and fine sand particles and 40% to 47% of a wetting solution to bind such materials into a yieldable, shapable compound, said wetting solution consisting of an aqueous solution sub-stantially 60% to 65% water, 5% to 15% calcium chloride and 2% to 20% phosphoric acid.
2. The sealing and filling material set forth in Claim 1 packaged in a preshaped flexible container capable of assuming a desired shape and retaining the wetting solution in the compound.
3. A sealing and filling material for metallurgical applications comprising a compound formed of 8% to 10% of consumable wood fiber, 45%
to 50% of a non-consumable material from the group consisting of finely ground fired clay, silicon carbide, magnesite, burned dolomite, alumina, ground limestone and fine sand particles and 40% to 47% of a wetting solution to bind said materials into a yieldable, shapable compound, said wetting solution consisting of ethyl alcohol.
to 50% of a non-consumable material from the group consisting of finely ground fired clay, silicon carbide, magnesite, burned dolomite, alumina, ground limestone and fine sand particles and 40% to 47% of a wetting solution to bind said materials into a yieldable, shapable compound, said wetting solution consisting of ethyl alcohol.
4. The sealing and filling material set forth in Claim 3 packaged in a preshaped flexible container capable of assuming a desired shape and retaining the wetting solution in the compound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA306,227A CA1094758A (en) | 1978-06-26 | 1978-06-26 | Sealing and filling material for metallurgical applications |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA306,227A CA1094758A (en) | 1978-06-26 | 1978-06-26 | Sealing and filling material for metallurgical applications |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1094758A true CA1094758A (en) | 1981-02-03 |
Family
ID=4111769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA306,227A Expired CA1094758A (en) | 1978-06-26 | 1978-06-26 | Sealing and filling material for metallurgical applications |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1094758A (en) |
-
1978
- 1978-06-26 CA CA306,227A patent/CA1094758A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |