CN113200758A - High-quality high-aluminum runner brick and preparation method thereof - Google Patents
High-quality high-aluminum runner brick and preparation method thereof Download PDFInfo
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- CN113200758A CN113200758A CN202110547240.3A CN202110547240A CN113200758A CN 113200758 A CN113200758 A CN 113200758A CN 202110547240 A CN202110547240 A CN 202110547240A CN 113200758 A CN113200758 A CN 113200758A
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- runner brick
- plastic clay
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- 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
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- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
Abstract
The invention relates to the technical field of refractory materials, and discloses a high-quality high-aluminum runner brick and a preparation method thereof. According to the invention, the prepared kaolinite, soft plastic clay and hard plastic clay with excellent performance are applied to the runner brick, the product produced by the preparation method has the performance of resisting the corrosion of acid-base slag and acid-base gas, can meet the harsh use environment under steel casting, and prolongs the service life, and the high-quality high-aluminum runner brick can improve the self performance in the use process through the arrangement of high-aluminum cement, so that the high-aluminum runner brick is suitable for various kilns to be fired, and the purpose of improving the strong acid-base corrosion resistance is achieved.
Description
Technical Field
The invention relates to the technical field of refractory materials, in particular to a high-quality high-aluminum runner brick and a preparation method thereof.
Background
The high-aluminum runner brick has strong adaptability in the field of steelmaking die casting, is widely applied, and particularly needs to be used for pouring special steel, high-quality steel and large-scale die steel to ensure the quality stability of the high-quality steel.
At present, the high-aluminum runner brick is a hollow refractory brick which is built in the steel casting industry and is used for communicating a molten iron ladle and a steel ingot mould in the ingot casting process. But the disadvantages of short service life, uneven stirring and the like often occur in the production process.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the high-quality high-aluminum runner brick and the preparation method thereof, which have the advantages of long service life, good corrosion resistance and the like and solve the problems in the background art.
(II) technical scheme
In order to achieve the purposes of long service life and good corrosion resistance, the invention provides the following technical scheme:
the invention aims to solve another technical problem of providing a high-quality high-aluminum runner brick and a preparation method thereof, wherein the preparation method comprises the following steps:
1) screening: firstly, respectively selecting high-quality high-alumina cement, soft plastic clay, hard plastic clay and kaolinite.
2) Mixing: pouring the high-alumina cement, the soft plastic clay, the hard plastic clay and the kaolinite into a stirring barrel in sequence, and premixing the raw materials for 13-20min to fully mix the raw materials together; then pouring into a mixing mill, and mixing and milling for 20 min.
3) Molding: and (3) performing mechanical pressing forming by adopting a semidry method, wherein the forming press is an electric screw press, and the pressure is 300-1000 t.
4) And (3) drying: after the molding, the molded product is placed in special drying equipment for drying.
5) And (3) firing: and drying the dried product in a drying kiln at the temperature of 100 ℃ for 24 hours, then putting the dried product into the kiln, and sintering the dried product in a tunnel kiln at a high temperature of 1300-1350 ℃.
6) And (4) checking: and taking the fired product out of the kiln and cooling, and sorting qualified products.
7) Packaging: and packaging and storing the qualified product.
Preferably, in the screening process, the raw materials with good quality are selected and discarded, the content of the mixed high-alumina cement is 45% -50%, the content of the mixed soft plastic clay is 15% -20%, the content of the mixed hard plastic clay is 15% -20%, and the content of the mixed kaolinite is 10% -20%.
Preferably, the output ends of the servo motors of the electric screw press, the drying equipment and the stirring barrel are fixedly connected with an external power supply through leads.
Preferably, the inspection comprises a first-level inspector and a second-level inspector, the first-level inspector performs first inspection on the product, the qualified product is regarded as passing, and the product is reworked if the qualified product is not qualified, the second-level inspector performs second inspection on the qualified product, the qualified product is passed, and the product is reworked if the unqualified product is not qualified.
Preferably, the packaging is stored away from the site of the alkaline-biasing chemical.
Preferably, the high-aluminum runner brick has the advantages of good strong acid and strong alkali corrosion resistance, good heat special property, rapid cooling and rapid heating resistance and no deformation.
(III) advantageous effects
Compared with the prior art, the invention provides a high-quality high-aluminum runner brick and a preparation method thereof, and the high-quality high-aluminum runner brick has the following beneficial effects:
1. according to the high-quality high-aluminum runner brick and the preparation method thereof, the prepared kaolinite, soft plastic clay and hard plastic clay with excellent performance are applied to the runner brick, and the product produced by the preparation method has the performance of resisting the corrosion of acid-base slag and acid-base gas, can meet the harsh use environment under steel casting, and prolongs the service life.
2. According to the high-quality high-aluminum runner brick and the preparation method thereof, the high-quality high-aluminum runner brick can improve the performance in the use process through the setting of high-aluminum cement, so that the high-quality high-aluminum runner brick is suitable for various kilns to be fired, the purpose of improving the strong acid and strong alkali corrosion resistance is achieved, through the setting of the stirring barrel, the raw materials can be fully stirred in the use process, the effect of improving the performance of the runner brick is further achieved, and the purpose of improving the higher effect is achieved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first experimental example: a high-quality high-aluminum runner brick and a preparation method thereof are characterized in that: the method comprises the following steps:
the method comprises the following steps: screening: firstly, respectively selecting high-quality high-alumina cement, soft plastic clay, hard plastic clay and kaolinite, screening out superior and inferior materials, leaving raw materials with good quality, and discarding the poor raw materials, wherein the content of the mixed high-alumina cement is 45-50%, the content of the mixed soft plastic clay is 15-20%, the content of the mixed hard plastic clay is 15-20%, and the content of the mixed kaolinite is 10-20%.
Step two: mixing: pouring the high-alumina cement, the soft plastic clay, the hard plastic clay and the kaolinite into a stirring barrel in sequence, premixing the raw materials for 13min to fully mix the raw materials together, then pouring the raw materials into a mixing and grinding machine, and mixing and grinding for 20 min.
Step three: molding: and (3) performing mechanical pressing forming by adopting a semidry method, wherein the forming press is an electric screw press, and the pressure is 300-1000 t.
Step four: and (3) drying: after the molding, the molded product is placed in special drying equipment for drying.
Step five: and (3) firing: and drying the dried product in a drying kiln at the temperature of 100 ℃ for 24 hours, then putting the dried product into the kiln, and sintering the dried product in a tunnel kiln at a high temperature of 1300-1350 ℃.
Step six: and (4) checking: and after the fired product is taken out of the kiln and cooled, sorting qualified products, wherein the product comprises a first-level inspector and a second-level inspector, the first-level inspector firstly inspects the product, the qualified product is regarded as passing, and the product is reworked if the product is not qualified, the second-level inspector inspects the qualified product for the second time, the qualified product is passed, and the product is reworked if the product is not qualified.
Step seven: packaging: packaging and storing the qualified product, wherein the product is stored far away from the alkaline chemical substance place in the packaging process
In this example, the raw material was stirred for 13min and mixed and ground for 20min, so that the raw material in the stirring tank was in the form of large particles, and formed after mixed and ground.
Example two: a high-quality high-aluminum runner brick and a preparation method thereof are characterized in that: the method comprises the following steps:
the method comprises the following steps: screening: firstly, respectively selecting high-quality high-alumina cement, soft plastic clay, hard plastic clay and kaolinite, screening out superior and inferior materials, leaving raw materials with good quality, and discarding the poor raw materials, wherein the content of the mixed high-alumina cement is 45-50%, the content of the mixed soft plastic clay is 15-20%, the content of the mixed hard plastic clay is 15-20%, and the content of the mixed kaolinite is 10-20%.
Step two: mixing: pouring the high-alumina cement, the soft plastic clay, the hard plastic clay and the kaolinite into a stirring barrel in sequence, premixing the raw materials for 16min to fully mix the raw materials together, then pouring the raw materials into a mixing and grinding machine, and mixing and grinding for 25 min.
Step three: molding: and (3) performing mechanical pressing forming by adopting a semidry method, wherein the forming press is an electric screw press, and the pressure is 300-1000 t.
Step four: and (3) drying: after the molding, the molded product is placed in special drying equipment for drying.
Step five: and (3) firing: and drying the dried product in a drying kiln at the temperature of 100 ℃ for 24 hours, then putting the dried product into the kiln, and sintering the dried product in a tunnel kiln at a high temperature of 1300-1350 ℃.
Step six: and (4) checking: and after the fired product is taken out of the kiln and cooled, sorting qualified products, wherein the product comprises a first-level inspector and a second-level inspector, the first-level inspector firstly inspects the product, the qualified product is regarded as passing, and the product is reworked if the product is not qualified, the second-level inspector inspects the qualified product for the second time, the qualified product is passed, and the product is reworked if the product is not qualified.
Step seven: packaging: and packaging and storing the qualified product, wherein the product is stored far away from the alkaline chemical substance place in the packaging process.
In this example, the raw material was stirred for 16min and mixed and ground for 25min, so that the raw material in the stirring tank was in the form of small particles, and formed after mixed and ground.
Example three: a high-quality high-aluminum runner brick and a preparation method thereof are characterized in that: the method comprises the following steps:
the method comprises the following steps: screening: firstly, respectively selecting high-quality high-alumina cement, soft plastic clay, hard plastic clay and kaolinite, screening out superior and inferior materials, leaving raw materials with good quality, and discarding the poor raw materials, wherein the content of the mixed high-alumina cement is 45-50%, the content of the mixed soft plastic clay is 15-20%, the content of the mixed hard plastic clay is 15-20%, and the content of the mixed kaolinite is 10-20%.
Step two: mixing: pouring the high-alumina cement, the soft plastic clay, the hard plastic clay and the kaolinite into a stirring barrel in sequence, premixing the raw materials for 20min to fully mix the raw materials together, then pouring the raw materials into a mixing and grinding machine, and mixing and grinding for 30 min.
Step three: molding: and (3) performing mechanical pressing forming by adopting a semidry method, wherein the forming press is an electric screw press, and the pressure is 300-1000 t.
Step four: and (3) drying: after the molding, the molded product is placed in special drying equipment for drying.
Step five: and (3) firing: and drying the dried product in a drying kiln at the temperature of 100 ℃ for 24 hours, then putting the dried product into the kiln, and sintering the dried product in a tunnel kiln at a high temperature of 1300-1350 ℃.
Step six: and (4) checking: and after the fired product is taken out of the kiln and cooled, sorting qualified products, wherein the product comprises a first-level inspector and a second-level inspector, the first-level inspector firstly inspects the product, the qualified product is regarded as passing, and the product is reworked if the product is not qualified, the second-level inspector inspects the qualified product for the second time, the qualified product is passed, and the product is reworked if the product is not qualified.
Step seven: packaging: and packaging and storing the qualified product, wherein the product is stored far away from the alkaline chemical substance place in the packaging process.
In this example, the raw materials were stirred for 20min and mixed and ground for 30min, so that the raw materials in the stirring tank were in the form of powder, and the mixture was ground and molded.
And (4) judging the standard: and in the second step, when the stirring time of the corners of the raw materials is 20min and the mixing and grinding time is 30min, the quality of the prepared high-quality high-aluminum runner brick is the highest.
Specifically, a user selects high-quality high-alumina cement, soft plastic clay, hard plastic clay and kaolinite respectively, the screening process is superior and inferior, raw materials with good quality are left, poor raw materials are discarded, then the high-alumina cement, the soft plastic clay, the hard plastic clay and the kaolinite are poured into a stirring barrel in sequence, the content of the high-alumina cement, the content of the soft plastic clay, the content of the hard plastic clay and the kaolinite are 45% -50%, 15% -20% and 10% -20%, respectively. Premixing raw materials for 20min to fully mix the raw materials; then pouring the mixture into a mixing mill, mixing and milling for 30min, after mixing, pressing and molding the mixed raw materials by a semi-dry method machine, selecting an electric screw press as a molding press, molding the mixture at the pressure of 300-1000 t, after molding, placing the molded product into special drying equipment for drying, fixedly connecting the output ends of servo motors of the electric screw press, the drying equipment and a stirring barrel with external power supplies through leads, thereby achieving the effects of convenience and quickness, drying the dried product in a drying kiln at the temperature of 100 ℃ for 24h, then placing the dried product in the kiln, firing the product at high temperature in a tunnel kiln at the firing temperature of 1300-1350 ℃, taking the fired product out of the kiln for cooling, sorting qualified products, wherein the inspection comprises a first-level inspector and a second-level inspector, the first-level inspector performs one-time inspection on the product, the product is qualified, the product is returned if the product is unqualified, and the second-level inspector performs secondary inspection on the qualified product, and if the product is qualified, reworking if the product is not qualified, and finally packaging and storing the qualified product, wherein the traditional Chinese medicine is stored away from a place with alkaline chemical substances in the packaging process.
The invention has the beneficial effects that: according to the high-quality high-aluminum runner brick and the preparation method thereof, the kaolinite, the soft plastic clay and the hard plastic clay which are prepared and have excellent performance are applied to the runner brick, the product produced by the preparation method has the performance of resisting the corrosion of acid-base slag and acid-base gas, can meet the harsh use environment under steel casting, and can prolong the service life, and the high-quality high-aluminum runner brick can improve the performance in the use process through the arrangement of high-aluminum cement, so that the high-quality high-aluminum runner brick is suitable for various kilns to be fired, and the purpose of improving the strong acid-base corrosion resistance is achieved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A high-quality high-aluminum runner brick and a preparation method thereof are characterized in that: the method comprises the following steps:
1) screening: respectively selecting high-quality high-alumina cement, soft plastic clay, hard plastic clay and kaolinite;
2) mixing: pouring the high-alumina cement, the soft plastic clay, the hard plastic clay and the kaolinite into a stirring barrel in sequence, and premixing the raw materials for 13-20min to fully mix the raw materials together; then pouring into a mixing mill, and mixing and milling for 20-30 min;
3) molding: performing mechanical pressing forming by adopting a semidry method, wherein an electric screw press is adopted as a forming press, and the pressure is 300 t-1000 t;
4) and (3) drying: after the molding, the molded product is placed in special drying equipment to be dried;
5) and (3) firing: drying the dried product in a drying kiln at the temperature of 100 ℃ for 24h, then loading into the kiln, and sintering at high temperature in a tunnel kiln, wherein the sintering temperature is 1300-1350 ℃;
6) and (4) checking: taking the fired product out of the kiln and cooling, and sorting qualified products;
7) packaging: and packaging and storing the qualified product.
2. The high-quality high-aluminum runner brick and the preparation method thereof according to claim 1, characterized in that: in the screening process, the raw materials with good quality are left out, the raw materials with poor quality are discarded, the content of the mixed high-alumina cement is 45% -50%, the content of the mixed soft plastic clay is 15% -20%, the content of the mixed hard plastic clay is 15% -20%, and the content of the mixed kaolinite is 10% -20%.
3. The high-quality high-aluminum runner brick and the preparation method thereof according to claim 1, characterized in that: the output ends of the servo motors of the electric screw press, the drying equipment and the stirring barrel are fixedly connected with an external power supply through wires.
4. The high-quality high-aluminum runner brick and the preparation method thereof according to claim 1, characterized in that: the inspection comprises a first-level inspector and a second-level inspector, the first-level inspector performs primary inspection on the product, the qualified product is regarded as passing, and the unqualified product is reworked, the second-level inspector performs secondary inspection on the qualified product, the qualified product is passed, and the unqualified product is reworked.
5. The high-quality high-aluminum runner brick and the preparation method thereof according to claim 1, characterized in that: the packaging is carried out far away from the place of the alkali-biased chemical substance.
6. The method for preparing high-quality high-aluminum runner brick according to claims 1-5, characterized in that: the high-aluminum runner brick has the advantages of good strong acid and strong alkali corrosion resistance, good heat special property, rapid cooling and heating resistance and no deformation.
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| CN202110547240.3A CN113200758A (en) | 2021-05-19 | 2021-05-19 | High-quality high-aluminum runner brick and preparation method thereof |
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| CN202110547240.3A CN113200758A (en) | 2021-05-19 | 2021-05-19 | High-quality high-aluminum runner brick and preparation method thereof |
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Application publication date: 20210803 |