CN112500166A - Novel acid-resistant alkali-resistant carbon brick and preparation method thereof - Google Patents
Novel acid-resistant alkali-resistant carbon brick and preparation method thereof Download PDFInfo
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- CN112500166A CN112500166A CN202011440334.2A CN202011440334A CN112500166A CN 112500166 A CN112500166 A CN 112500166A CN 202011440334 A CN202011440334 A CN 202011440334A CN 112500166 A CN112500166 A CN 112500166A
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- 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
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
- C04B35/528—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from carbonaceous particles with or without other non-organic components
- C04B35/532—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from carbonaceous particles with or without other non-organic components containing a carbonisable binder
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- 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
- C04B2235/48—Organic compounds becoming part of a ceramic after heat treatment, e.g. carbonising phenol resins
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/602—Making the green bodies or pre-forms by moulding
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
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Abstract
The invention discloses a novel acid and alkali resistant carbon brick and a preparation method thereof, wherein the novel acid and alkali resistant carbon brick comprises: 55-70 parts of aggregate, 15-25 parts of coke powder, 5-10 parts of carburant and 2-10 parts of binding agent; wherein the binder comprises at least one of furan resin, phenolic resin, coal pitch and coal tar. In the technical scheme provided by the invention, the emission of harmful gas and dust in the past production process is eliminated, and the harm of the harmful gas and dust to human bodies is eliminated; the production environment of staff is improved, and the pollution of harmful gas and dust to the environment is reduced; combustible gas escape frequently accompanied in the asphalt heating process is eliminated, and potential safety hazards of flammability and explosiveness are removed; the input-output ratio of materials is improved, and the production cost is reduced; the labor intensity of workers is reduced, the energy is saved, the consumption is reduced, the production period is shortened, and the production efficiency is improved.
Description
Technical Field
The invention relates to the technical field of acid-resistant and alkali-resistant bricks, in particular to a novel acid-resistant and alkali-resistant carbon brick and a preparation method thereof.
Background
The current production process route of acid-resistant alkali-resistant bricks is as follows: mixing the aggregate and the asphalt binder to prepare a large blank, burying carbon at high temperature for burning, and then cutting the large blank to process the required product. The prior production process of acid-resistant and alkali-resistant bricks has the following defects: 1. as asphalt is used as a bonding agent, the materials and the asphalt must be heated in order to keep the materials to have certain plasticity in the process, thereby polluting the environment. Harmful gas emitted by the asphalt seriously harms the health of staff in the blank making process; 2. combustible gas is often escaped in the asphalt heating process, and the asphalt is flammable and explosive, so that great potential safety hazard exists; 3. after firing is finished, secondary cutting processing is carried out on the large blank, so that material waste is large, dust environmental pollution is large, the labor intensity of workers is high, and potential safety hazards exist in the working process; 4. the large blank is cut and processed, the influence of mechanical precision and the fine degree of operation of workers is caused, and the deviation of the overall dimension of a product is large.
Disclosure of Invention
The invention aims to provide a novel acid and alkali resistant carbon brick and a preparation method thereof aiming at overcoming the defects of the prior art and solving the problems of various defects of the prior acid and alkali resistant brick production process.
The invention provides a novel acid and alkali resistant carbon brick, which comprises the following components in parts by weight: 55-70 parts of aggregate, 15-25 parts of coke powder, 5-10 parts of carburant and 2-10 parts of binding agent; wherein the binding agent comprises at least one of furan resin, phenolic resin, coal pitch and coal tar.
Optionally, the aggregate comprises at least one of petroleum coke, pitch coke, metallurgical coke, graphitized coke.
The invention also provides a preparation method of the novel acid-resistant alkali-resistant carbon brick, which comprises the following steps:
uniformly mixing various raw materials to obtain a mixture with the instant temperature of 30-80 ℃;
spreading the mixture, volatilizing the gas and cooling to below 70 ℃;
pouring the mixture after cooling into a press, and forming a green brick to obtain a green body;
standing the green body for 12-48 hours;
placing the green body into a medium to be soaked for 40 minutes to 12 hours;
the green embryo is sintered for 28 to 120 hours under the environment of 700-2600 ℃, and the finished product is obtained.
Optionally, the press is an 80T or more press.
Optionally, the medium comprises at least one of furan resin, phenolic resin, coal pitch, coal tar.
The invention also provides a preparation method of the novel acid-resistant alkali-resistant carbon brick, which comprises the following steps:
uniformly mixing various raw materials to obtain a mixture with the instant temperature of 30-80 ℃;
spreading the mixture, volatilizing the gas and cooling to below 70 ℃;
pouring the mixture after cooling into a press, and forming a green brick to obtain a green body;
standing the green body for 12-48 hours;
uniformly coating an adhesive on the surface of the green body;
standing the coated green body for 24-48 hours;
the green embryo is sintered for 28 to 120 hours under the environment of 700-2600 ℃, and the finished product is obtained.
In the technical scheme provided by the invention, the emission of harmful gas and dust in the past production process is eliminated, and the harm of the harmful gas and dust to human bodies is eliminated; the production environment of staff is improved, and the pollution of harmful gas and dust to the environment is reduced; combustible gas escape frequently accompanied in the asphalt heating process is eliminated, and potential safety hazards of flammability and explosiveness are removed; the input-output ratio of materials is improved, and the production cost is reduced; the labor intensity of workers is reduced, the energy is saved, the consumption is reduced, the production period is shortened, and the production efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic flow chart of a method for preparing the novel acid and alkali resistant carbon brick provided by the invention;
fig. 2 is a second schematic flow chart of the preparation method of the novel acid and alkali resistant carbon brick provided by the invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in 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.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a novel acid-resistant alkali-resistant carbon brick, which comprises the following raw materials in percentage by weight: 55-70 parts of aggregate, 15-25 parts of coke powder, 5-10 parts of carburant and 2-10 parts of binding agent; wherein, the bonding agent comprises at least one of furan resin, phenolic resin, coal pitch and coal tar, and the aggregate comprises at least one of petroleum coke, pitch coke, metallurgical coke and graphitized coke.
1, preparing materials: 55-70 parts of petroleum coke, 15-25 parts of coke powder, 5-10 parts of carburant and 2-10 parts of binding agent, wherein the sum of the parts by weight of the raw materials is 100 parts.
And (3) preparing a material 2: 55-70 parts of asphalt coke, 15-25 parts of coke powder, 5-10 parts of carburant and 2-10 parts of binding agent, wherein the sum of the parts by weight of the raw materials is 100 parts.
And (3) preparing materials: 55-70 parts of metallurgical coke, 15-25 parts of coke powder, 5-10 parts of carburant and 2-10 parts of binding agent, wherein the sum of the parts by weight of the raw materials is 100 parts.
And (4) preparing materials: 55-70 parts of graphitized coke, 15-25 parts of coke powder, 5-10 parts of carburant and 2-10 parts of binding agent, wherein the sum of the parts by weight of the raw materials is 100 parts.
In the above formulations, the binding agents include, but are not limited to: the general carbon product adhesive such as furan resin, phenolic resin, coal pitch, coal tar and the like can be selected according to different product quality requirements. For example, the binder includes at least one of furan resin, phenolic resin, coal pitch, coal tar.
Fig. 1 shows an embodiment of a method for preparing a novel acid and alkali resistant carbon brick according to the present invention, and as shown in fig. 1, the method for preparing the novel acid and alkali resistant carbon brick comprises the following steps.
Step S210: mixing the raw materials uniformly to obtain a mixture with the instant temperature of 30-80 ℃.
Specifically, the raw materials are prepared according to any one of the ingredients 1 to 4, the prepared raw materials are uniformly mixed to obtain a mixture, and the instant temperature of the mixture is 30-80 ℃ after the mixture is finished.
Step S220: spreading the mixture, volatilizing the gas and cooling to below 70 ℃.
Step S230: and pouring the mixture after cooling into a press, and forming a green brick to obtain a green body.
Optionally, pouring the mixture obtained in step S220 into a press of more than 80T, and forming a green brick to obtain a green body.
Step S240: and standing the green body for 12-48 hours.
Step S250: and placing the green body into the medium for soaking for 40 minutes to 12 hours.
Specifically, the green compact obtained in step S240 is placed in a medium for immersing for 40 minutes to 12 hours, wherein the medium may include at least one of furan resin, phenolic resin, coal tar, and the like.
Step S260: the green embryo is sintered for 28 to 120 hours under the environment of 700-2600 ℃, and the finished product is obtained.
Specifically, the green body obtained in step S250 is baked to obtain a finished product of the corrosion-resistant and alkali-resistant brick.
Fig. 2 shows another embodiment of the method for preparing the novel acid and alkali resistant carbon brick according to the present invention, and as shown in fig. 2, the method for preparing the novel acid and alkali resistant carbon brick comprises the following steps.
Step S310: mixing the raw materials uniformly to obtain a mixture with the instant temperature of 30-80 ℃.
Step S320: spreading the mixture, volatilizing the gas and cooling to below 70 ℃.
Step S330: and pouring the mixture after cooling into a press, and forming a green brick to obtain a green body.
Step S340: and standing the green body for 12-48 hours.
Step S350: and uniformly coating the adhesive on the surface of the green blank.
Specifically, the surface of the green body is uniformly coated with an adhesive to reduce the apparent porosity of the product.
Step S360: and standing the coated green body for 24-48 hours.
Step S370: the green embryo is sintered for 28 to 120 hours under the environment of 700-2600 ℃, and the finished product is obtained.
In order to obtain better use effect of the novel acid-resistant and alkali-resistant carbon brick, the novel acid-resistant and alkali-resistant carbon brick can be roasted again after being soaked for two or even more times according to actual conditions after being roasted, so that the porosity is gradually reduced, the graphitization degree is improved, and a product with better quality is obtained.
Compared with the prior art, the novel acid-resistant alkali-resistant carbon brick and the preparation method thereof have the following advantages:
1. the graphitization proportion is low, and the energy consumption is reduced;
2. except the emission of harmful gas and dust in the past production process, the harm to human body is caused; not only improves the production environment of staff, but also greatly reduces the environmental pollution;
3. the material is formed at one time, the loss ratio of the material is low, cutting is not needed, the production time is short, and the production efficiency is improved;
4. the deformation is small during cooling, and the qualification rate is high;
the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. The novel acid and alkali resistant carbon brick is characterized by comprising the following components in parts by weight: 55-70 parts of aggregate, 15-25 parts of coke powder, 5-10 parts of carburant and 2-10 parts of binding agent; wherein the binding agent comprises at least one of furan resin, phenolic resin, coal pitch and coal tar.
2. The novel acid and alkali resistant carbon brick as claimed in claim 1, wherein the aggregate comprises at least one of petroleum coke, pitch coke, metallurgical coke, and graphitized coke.
3. The method for preparing the novel acid and alkali resistant carbon brick as claimed in claim 1 or 2, comprising:
uniformly mixing various raw materials to obtain a mixture with the instant temperature of 30-80 ℃;
spreading the mixture, volatilizing the gas and cooling to below 70 ℃;
pouring the mixture after cooling into a press, and forming a green brick to obtain a green body;
standing the green body for 12-48 hours;
placing the green body into a medium to be soaked for 40 minutes to 12 hours;
the green embryo is sintered for 28 to 120 hours under the environment of 700-2600 ℃, and the finished product is obtained.
4. The method for preparing the novel acid and alkali resistant carbon brick as claimed in claim 3, wherein the press is a press of 80T or more.
5. The method for preparing a novel carbon brick with acid and alkali resistance as claimed in claim 3, wherein the medium comprises at least one of furan resin, phenolic resin, coal pitch and coal tar.
6. The method for preparing the novel acid and alkali resistant carbon brick as claimed in claim 1 or 2, comprising:
uniformly mixing various raw materials to obtain a mixture with the instant temperature of 30-80 ℃;
spreading the mixture, volatilizing the gas and cooling to below 70 ℃;
pouring the mixture after cooling into a press, and forming a green brick to obtain a green body;
standing the green body for 12-48 hours;
uniformly coating an adhesive on the surface of the green body;
standing the coated green body for 24-48 hours;
the green embryo is sintered for 28 to 120 hours under the environment of 700-2600 ℃, and the finished product is obtained.
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| CN202011440334.2A CN112500166A (en) | 2020-12-07 | 2020-12-07 | Novel acid-resistant alkali-resistant carbon brick and preparation method thereof |
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| CN202011440334.2A CN112500166A (en) | 2020-12-07 | 2020-12-07 | Novel acid-resistant alkali-resistant carbon brick and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113754438A (en) * | 2021-10-14 | 2021-12-07 | 刁松 | Process preparation method for improving density of initial roasting blank of graphite electrode |
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| US4216020A (en) * | 1978-08-26 | 1980-08-05 | Kyusyu Refractories Co., Ltd. | Carbonaceous bricks and the method for producing the same |
| CN103387221A (en) * | 2013-08-01 | 2013-11-13 | 东阿县鲁西冶金耐火材料有限公司 | Pitch-free bonding cathode carbon block material for aluminium electrolysis cell and production method of pitch-free bonding cathode carbon block material |
| CN103803856A (en) * | 2013-12-20 | 2014-05-21 | 武汉钢铁(集团)公司 | Carbon brick for phosphoric acid reaction tank and pickling tank |
| CN106699182A (en) * | 2016-11-30 | 2017-05-24 | 中国科学院山西煤炭化学研究所 | High-temperature-oxidation-resistant high-temperature-strong-alkali-resistant graphite product and preparation method thereof |
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2020
- 2020-12-07 CN CN202011440334.2A patent/CN112500166A/en active Pending
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| US4216020A (en) * | 1978-08-26 | 1980-08-05 | Kyusyu Refractories Co., Ltd. | Carbonaceous bricks and the method for producing the same |
| CN103387221A (en) * | 2013-08-01 | 2013-11-13 | 东阿县鲁西冶金耐火材料有限公司 | Pitch-free bonding cathode carbon block material for aluminium electrolysis cell and production method of pitch-free bonding cathode carbon block material |
| CN103803856A (en) * | 2013-12-20 | 2014-05-21 | 武汉钢铁(集团)公司 | Carbon brick for phosphoric acid reaction tank and pickling tank |
| CN106699182A (en) * | 2016-11-30 | 2017-05-24 | 中国科学院山西煤炭化学研究所 | High-temperature-oxidation-resistant high-temperature-strong-alkali-resistant graphite product and preparation method thereof |
| CN109369184A (en) * | 2018-12-03 | 2019-02-22 | 大同新成新材料股份有限公司 | A kind of isotropism isostatic pressing formed graphite material and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113754438A (en) * | 2021-10-14 | 2021-12-07 | 刁松 | Process preparation method for improving density of initial roasting blank of graphite electrode |
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