CN115974568B - Corrosion-resistant brick for incinerator and preparation method thereof - Google Patents
Corrosion-resistant brick for incinerator and preparation method thereof Download PDFInfo
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- CN115974568B CN115974568B CN202310056460.5A CN202310056460A CN115974568B CN 115974568 B CN115974568 B CN 115974568B CN 202310056460 A CN202310056460 A CN 202310056460A CN 115974568 B CN115974568 B CN 115974568B
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- 238000005260 corrosion Methods 0.000 title claims abstract description 91
- 239000011449 brick Substances 0.000 title claims abstract description 88
- 230000007797 corrosion Effects 0.000 title claims abstract description 72
- 238000002360 preparation method Methods 0.000 title claims description 27
- 239000000843 powder Substances 0.000 claims abstract description 110
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical group [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 60
- 239000000853 adhesive Substances 0.000 claims abstract description 41
- 230000001070 adhesive effect Effects 0.000 claims abstract description 41
- 239000005011 phenolic resin Substances 0.000 claims abstract description 35
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 35
- 238000011049 filling Methods 0.000 claims abstract description 34
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 25
- 235000019738 Limestone Nutrition 0.000 claims abstract description 24
- 229910001570 bauxite Inorganic materials 0.000 claims abstract description 24
- 239000006028 limestone Substances 0.000 claims abstract description 24
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 17
- 239000010431 corundum Substances 0.000 claims abstract description 17
- 229910001710 laterite Inorganic materials 0.000 claims abstract description 14
- 239000011504 laterite Substances 0.000 claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 30
- 239000011707 mineral Substances 0.000 claims description 30
- 239000003973 paint Substances 0.000 claims description 30
- 239000010881 fly ash Substances 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 238000002156 mixing Methods 0.000 claims description 20
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000002791 soaking Methods 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims 1
- -1 carbon modified phenolic resin Chemical class 0.000 claims 1
- 239000002253 acid Substances 0.000 abstract description 9
- 239000003513 alkali Substances 0.000 abstract description 6
- 239000011819 refractory material Substances 0.000 abstract description 5
- 239000003610 charcoal Substances 0.000 description 23
- 239000002245 particle Substances 0.000 description 22
- 230000000052 comparative effect Effects 0.000 description 15
- 239000010902 straw Substances 0.000 description 13
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 12
- 239000002994 raw material Substances 0.000 description 12
- 239000011435 rock Substances 0.000 description 12
- 239000002689 soil Substances 0.000 description 12
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- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 11
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 11
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- 238000009210 therapy by ultrasound Methods 0.000 description 7
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- 239000003518 caustics Substances 0.000 description 2
- 231100001010 corrosive Toxicity 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 244000105624 Arachis hypogaea Species 0.000 description 1
- 235000010777 Arachis hypogaea Nutrition 0.000 description 1
- 235000018262 Arachis monticola Nutrition 0.000 description 1
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- 240000007049 Juglans regia Species 0.000 description 1
- 235000009496 Juglans regia Nutrition 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000005587 carbonate group Chemical group 0.000 description 1
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Abstract
The invention relates to the field of refractory materials, and particularly discloses a corrosion-resistant brick for an incinerator, which comprises refractory aggregate, filling fine powder and an adhesive; wherein the refractory aggregate comprises bauxite, corundum and limestone; the filling fine powder comprises graphite powder and laterite powder; the adhesive is phenolic resin. The incinerator prepared by the invention has the advantages of high corrosion resistance, high compressive strength, small change of a re-burning line, small porosity, high volume density and high refractoriness. Meanwhile, the volume of the corrosion-resistant brick for the incinerator prepared by the invention has good acid and alkali resistance, and can be used for different parts and different working conditions in the incinerator. Therefore, the corrosion-resistant brick for the incinerator, which is prepared by the invention, solves the problem of shorter service life of the existing refractory brick, and reduces the production cost.
Description
Technical Field
The invention belongs to the field of refractory materials, and particularly relates to a corrosion-resistant brick for an incinerator and a preparation method thereof.
Technical Field
The incinerator is used for incinerating garbage, which is an important way for purifying ecological environment, and can effectively relieve garbage pollution. The incinerator is a harmless treatment device which uses the combustion of fuel such as coal, fuel oil, fuel gas and the like to burn and carbonize objects to be treated at high temperature so as to achieve the aim of disinfection, and is commonly used for harmless treatment of medical and domestic waste products and animals. The average temperature is typically over 850 degrees celsius during operation of the incinerator, and can reach and be maintained above 1000 degrees celsius during actual operation. Therefore, the incinerator needs to be protected by using refractory materials inside the incinerator, and the refractory materials can play a role in seamless masonry in the hearth.
The refractory brick is a shaped refractory material, and is of various types at present, but in actual work, the conventional refractory brick is found to have serious corrosion phenomenon along with the extension of the service time of a kiln, so that the damage generated after the incinerator is operated continuously for a long time is often required to be repaired, the working efficiency is reduced, and the production cost is increased. Therefore, there is a need for a new corrosion-resistant brick for an incinerator that maintains excellent properties of the refractory brick, and is resistant to acid and alkali, so as to maintain long-term stable operation of the incinerator.
Disclosure of Invention
In order to solve the technical problems, the invention provides a corrosion-resistant brick for an incinerator, which comprises refractory aggregate, filling fine powder and an adhesive;
wherein the refractory aggregate comprises bauxite, corundum and limestone; the filling fine powder comprises graphite powder and laterite powder; the adhesive is phenolic resin.
In some embodiments, the refractory aggregate, the filling fine powder and the binder are in a weight part ratio of 60-70:25-40:10-20.
in some embodiments, the bauxite, corundum and limestone are 40-45 parts by weight: 15-20:5, a step of; the weight portion ratio of the graphite powder to the laterite powder is 15-20:5-20.
in some of these embodiments, the bauxite has a particle size of 3-8mm.
In some of these embodiments, the limestone has a particle size of 2-5mm.
In some embodiments, the graphite powder has a particle size of 0.088mm or less.
In some of these embodiments, the laterite powder has a particle size of 0.088mm or less.
In some of these embodiments, the laterite powder is carbonate laterite powder.
In some of these embodiments, the binder is a biochar modified phenolic resin.
In some embodiments, the method for preparing the biochar modified phenolic resin comprises the following steps: and mixing the biochar powder with the phenolic resin, and heating to prepare the biochar modified phenolic resin.
In some embodiments, the biochar is straw biochar and/or corn biochar.
In some embodiments, when the charcoal powder is straw charcoal powder and corn charcoal powder, the weight ratio of the straw charcoal powder to the corn charcoal powder is 1:1.
in some of these embodiments, the biochar powder is heated to a temperature of 30-45 ℃ after mixing with the phenolic resin.
In some of these embodiments, the biochar powder is mixed with phenolic resin and then heated at 30-45 ℃ for 20-50 minutes.
In some of these embodiments, the incinerator corrosion-resistant tile further comprises a corrosion-resistant coating; the anticorrosive paint is coated on the refractory bricks.
In some of these embodiments, the anticorrosive coating comprises: fly ash, mineral powder, phenolic resin and water.
In some embodiments, the weight ratio of the fly ash to the mineral powder to the phenolic resin to the water is 5-10:3-5:40-50:10-15.
in some embodiments, the ferrosilicon content in the fly ash is more than or equal to 70%.
In some of these embodiments, the mineral powder is ultrafine mineral powder.
In some embodiments, the method for preparing the anticorrosive paint comprises: mixing the fly ash, mineral powder, phenolic resin and water, and carrying out ultrasonic treatment for 10-30min to obtain the anti-corrosion coating.
The invention also provides a preparation method of the corrosion-resistant brick for the incinerator, which comprises the following steps: and (3) keeping the refractory aggregate, the filling fine powder and water at 30-50 ℃ for 20-60min, mixing the adhesive, and keeping the temperature at 200-400 ℃ for 120-240min to obtain the corrosion-resistant brick for the incinerator.
In some of these embodiments, the method further comprises immersing the incinerator with a corrosion resistant brick in a corrosion resistant coating.
The invention also provides the application of the corrosion-resistant brick for the incinerator or the corrosion-resistant brick for the incinerator prepared by any preparation method in manufacturing and/or repairing the incinerator.
Compared with the prior art, the invention has the beneficial effects that:
the corrosion-resistant brick for the incinerator prepared by the invention has the advantages of high compressive strength, small change of a re-firing line, small porosity, high volume density and high refractoriness. Meanwhile, the volume of the corrosion-resistant brick for the incinerator prepared by the invention has good acid and alkali resistance, and can be used for different parts and different working conditions in the incinerator. Therefore, the corrosion-resistant brick for the incinerator prepared by the invention solves the problem of shorter service life of the existing refractory brick.
The corrosion-resistant brick for the incinerator prepared by the invention can be constructed according to different construction parts, has strong fire resistance and acid and alkali corrosion resistance, prolongs the service life of the refractory brick, and reduces the production cost.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The raw materials used in the present invention are all commercially available.
Example 1
An anti-corrosion brick for an incinerator comprises refractory aggregate, filling fine powder and an adhesive; wherein the refractory aggregate comprises bauxite, corundum and limestone; the filling fine powder comprises graphite powder and carbonate rock red soil powder; the adhesive is biochar modified phenolic resin. The weight part ratio of the refractory aggregate, the filling fine powder and the adhesive is 70:40:20. wherein, bauxite, corundum and limestone are 45 parts by weight: 20:5, a step of; the weight portion ratio of the graphite powder to the carbonate rock red soil powder is 20:20. wherein the grain size of the bauxite is 3mm; the particle size of the limestone is 2mm; the particle size of the graphite powder is less than or equal to 0.088mm; the particle size of the laterite powder is less than or equal to 0.088mm. Wherein the content of the silicoaluminoferrite in the fly ash is more than or equal to 70 percent; the mineral powder is superfine mineral powder.
The anticorrosive paint comprises the following components: fly ash, mineral powder, phenolic resin and water; the weight portion ratio of the fly ash, the mineral powder, the phenolic resin and the water is 10:5:50:15. mixing the raw materials of the anticorrosive paint, and carrying out ultrasonic treatment for 30min to obtain the anticorrosive paint.
The preparation method of the adhesive biochar modified phenolic resin comprises the following steps: the weight part ratio of the corn biochar to the phenolic resin is 6:25, a step of selecting a specific type of material; mixing corn charcoal powder with phenolic resin, and then preserving heat at 80 ℃ for 60min to prepare the charcoal modified phenolic resin.
The preparation method of the corrosion-resistant brick for the incinerator comprises the following steps: and (3) after the refractory aggregate, the filling fine powder and the water are kept at 50 ℃ for 60min, mixing the adhesive, preserving heat at 400 ℃ for 240min, extruding through a pug mill and a die, and cutting to obtain the refractory brick. The refractory bricks are soaked in the anti-corrosion paint, and are kept at 400 ℃ for 8 hours to obtain the anti-corrosion brick for the incinerator.
Example 2
An anti-corrosion brick for an incinerator comprises refractory aggregate, filling fine powder and an adhesive; wherein the refractory aggregate comprises bauxite, corundum and limestone; the filling fine powder comprises graphite powder and carbonate rock red soil powder; the adhesive is biochar modified phenolic resin. The weight parts ratio of the refractory aggregate, the filling fine powder and the adhesive is 60:25:10. wherein, the weight portion ratio of bauxite, corundum and limestone is 40:15:5, a step of; the weight portion ratio of the graphite powder to the carbonate rock red soil powder is 15:5. wherein the grain size of the bauxite is 8mm; the particle size of the limestone is 5mm; the particle size of the graphite powder is less than or equal to 0.088mm; the particle size of the laterite powder is less than or equal to 0.088mm. Wherein the content of the silicoaluminoferrite in the fly ash is more than or equal to 70 percent; the mineral powder is superfine mineral powder.
The anticorrosive paint comprises the following components: fly ash, mineral powder, phenolic resin and water; the weight portion ratio of the fly ash, the mineral powder, the phenolic resin and the water is 5:3:40:10. mixing the raw materials of the anticorrosive paint, and carrying out ultrasonic treatment for 10min to obtain the anticorrosive paint.
The preparation method of the adhesive biochar modified phenolic resin comprises the following steps: the weight portion ratio of the straw biochar to the phenolic resin is 2:15; mixing straw charcoal powder with phenolic resin, and then preserving heat at 45 ℃ for 30min to prepare the charcoal modified phenolic resin.
The preparation method of the corrosion-resistant brick for the incinerator comprises the following steps: and (3) after the refractory aggregate, the filling fine powder and the water are kept at 30 ℃ for 20min, the adhesive is mixed, the temperature is kept at 200 ℃ for 120min, and then the refractory brick is obtained through extrusion by a pug mill and a die and cutting. The refractory bricks are soaked in the anti-corrosion paint, and are kept at 200 ℃ for 4 hours to obtain the anti-corrosion brick for the incinerator.
Example 3
An anti-corrosion brick for an incinerator comprises refractory aggregate, filling fine powder and an adhesive; wherein the refractory aggregate comprises bauxite, corundum and limestone; the filling fine powder comprises graphite powder and carbonate rock red soil powder; the adhesive is biochar modified phenolic resin. The weight part ratio of the refractory aggregate, the filling fine powder and the adhesive is 65:30:15. wherein, bauxite, corundum and limestone are mixed according to the weight ratio of 43:17:5, a step of; the weight portion ratio of the graphite powder to the carbonate rock red soil powder is 18:13. wherein the grain size of the bauxite is 8mm; the particle size of the limestone is 4mm; the particle size of the graphite powder is less than or equal to 0.088mm; the particle size of the laterite powder is less than or equal to 0.088mm. Wherein the content of the silicoaluminoferrite in the fly ash is more than or equal to 70 percent; the mineral powder is superfine mineral powder.
The anticorrosive paint comprises the following components: fly ash, mineral powder, phenolic resin and water; the weight portion ratio of the fly ash, the mineral powder, the phenolic resin and the water is 7:4:45:12. mixing the raw materials of the anticorrosive paint, and carrying out ultrasonic treatment for 20min to obtain the anticorrosive paint.
The preparation method of the adhesive biochar modified phenolic resin comprises the following steps: the weight portion ratio of the straw biochar to the phenolic resin is 4:20, a step of; mixing straw charcoal powder with phenolic resin, and then preserving heat at 60 ℃ for 45min to prepare the charcoal modified phenolic resin.
The preparation method of the corrosion-resistant brick for the incinerator comprises the following steps: and (3) after the refractory aggregate, the filling fine powder and the water are kept at 40 ℃ for 50min, the adhesive is mixed, the temperature is kept at 300 ℃ for 190min, and then the refractory brick is obtained through extrusion by a pug mill and a die and cutting. The refractory bricks are soaked in the anti-corrosion paint, and are kept at 300 ℃ for 6 hours to obtain the anti-corrosion brick for the incinerator.
Example 4
An anti-corrosion brick for an incinerator comprises refractory aggregate, filling fine powder and an adhesive; wherein the refractory aggregate comprises bauxite, corundum and limestone; the filling fine powder comprises graphite powder and carbonate rock red soil powder; the adhesive is biochar modified phenolic resin. The weight parts ratio of the refractory aggregate, the filling fine powder and the adhesive is 60:40:20. wherein, the weight portion ratio of bauxite, corundum and limestone is 40:20:5, a step of; the weight portion ratio of the graphite powder to the carbonate rock red soil powder is 15:20. wherein the grain size of the bauxite is 5mm; the particle size of the limestone is 3mm; the particle size of the graphite powder is less than or equal to 0.088mm; the particle size of the laterite powder is less than or equal to 0.088mm. Wherein the content of the silicoaluminoferrite in the fly ash is more than or equal to 70 percent; the mineral powder is superfine mineral powder.
The anticorrosive paint comprises the following components: fly ash, mineral powder, phenolic resin and water; the weight portion ratio of the fly ash, the mineral powder, the phenolic resin and the water is 10:3:50:15. mixing the raw materials of the anticorrosive paint, and carrying out ultrasonic treatment for 20min to obtain the anticorrosive paint.
The preparation method of the adhesive biochar modified phenolic resin comprises the following steps: the weight part ratio of the corn biochar to the phenolic resin is 2:15; mixing corn charcoal powder with phenolic resin, and then preserving heat at 80 ℃ for 50min to prepare the charcoal modified phenolic resin.
The preparation method of the corrosion-resistant brick for the incinerator comprises the following steps: and (3) after keeping the refractory aggregate, the filling fine powder and water at 35 ℃ for 35min, mixing the adhesive, keeping the temperature at 280 ℃ for 160min, extruding through a pug mill and a die, and cutting to obtain the refractory brick. The refractory bricks are soaked in the anti-corrosion paint, and are kept at 200 ℃ for 8 hours to obtain the anti-corrosion brick for the incinerator.
Example 5
An anti-corrosion brick for an incinerator comprises refractory aggregate, filling fine powder and an adhesive; wherein the refractory aggregate comprises bauxite, corundum and limestone; the filling fine powder comprises graphite powder and carbonate rock red soil powder; the adhesive is biochar modified phenolic resin. The weight parts ratio of the refractory aggregate, the filling fine powder and the adhesive is 60:40:20. wherein, the weight portion ratio of bauxite, corundum and limestone is 40:20:5, a step of; the weight portion ratio of the graphite powder to the carbonate rock red soil powder is 18:5. wherein the grain size of the bauxite is 3mm; the particle size of the limestone is 2mm; the particle size of the graphite powder is less than or equal to 0.088mm; the particle size of the laterite powder is less than or equal to 0.088mm. Wherein the content of the silicoaluminoferrite in the fly ash is more than or equal to 70 percent; the mineral powder is superfine mineral powder.
The anticorrosive paint comprises the following components: fly ash, mineral powder, phenolic resin and water; the weight portion ratio of the fly ash, the mineral powder, the phenolic resin and the water is 8:5:43:14. mixing the raw materials of the anticorrosive paint, and carrying out ultrasonic treatment for 25min to obtain the anticorrosive paint.
The preparation method of the adhesive biochar modified phenolic resin comprises the following steps: the weight portion ratio is 1:1, the weight part ratio of the straw charcoal powder to the corn charcoal powder to the phenolic resin is 5:25, a step of selecting a specific type of material; mixing straw charcoal powder and corn charcoal powder with phenolic resin, and preserving the temperature at 80 ℃ for 30min to prepare the charcoal modified phenolic resin.
The preparation method of the corrosion-resistant brick for the incinerator comprises the following steps: and (3) after the refractory aggregate, the filling fine powder and the water are kept at 30 ℃ for 40min, the adhesive is mixed, the temperature is kept at 200 ℃ for 240min, and then the refractory brick is obtained through extrusion by a pug mill and a die and cutting. The refractory bricks are soaked in the anti-corrosion paint, and are kept at 200 ℃ for 8 hours to obtain the anti-corrosion brick for the incinerator.
Example 6
An anti-corrosion brick for an incinerator comprises refractory aggregate, filling fine powder and an adhesive; wherein the refractory aggregate comprises bauxite, corundum and limestone; the filling fine powder comprises graphite powder and carbonate rock red soil powder; the adhesive is biochar modified phenolic resin. The weight parts ratio of the refractory aggregate, the filling fine powder and the adhesive is 60:29:17. wherein, the weight portion ratio of bauxite, corundum and limestone is 40:16:5, a step of; the weight portion ratio of the graphite powder to the carbonate rock red soil powder is 19:10. wherein the grain size of the bauxite is 8mm; the particle size of the limestone is 5mm; the particle size of the graphite powder is less than or equal to 0.088mm; the particle size of the laterite powder is less than or equal to 0.088mm. Wherein the content of the silicoaluminoferrite in the fly ash is more than or equal to 70 percent; the mineral powder is superfine mineral powder.
The anticorrosive paint comprises the following components: fly ash, mineral powder, phenolic resin and water; the weight portion ratio of the fly ash, the mineral powder, the phenolic resin and the water is 10:3:50:10. mixing the raw materials of the anticorrosive paint, and carrying out ultrasonic treatment for 30min to obtain the anticorrosive paint.
The preparation method of the adhesive biochar modified phenolic resin comprises the following steps: the weight portion ratio is 1:1, the weight part ratio of the straw charcoal powder to the corn charcoal powder to the phenolic resin is 2:25, a step of selecting a specific type of material; mixing straw charcoal powder and corn charcoal powder with phenolic resin, and preserving the temperature at 80 ℃ for 30min to prepare the charcoal modified phenolic resin.
The preparation method of the corrosion-resistant brick for the incinerator comprises the following steps: and (3) after the refractory aggregate, the filling fine powder and the water are kept at 40 ℃ for 20min, the adhesive is mixed, the temperature is kept at 350 ℃ for 140min, and then the refractory brick is obtained through extrusion by a pug mill and a die and cutting. And (3) soaking the refractory bricks outside in an anticorrosive paint, and preserving heat for 6 hours at 200 ℃ to obtain the corrosion-resistant brick for the incinerator.
Comparative example 1
The raw material composition and the preparation method of the corrosion-resistant brick for the incinerator are the same as those of example 2, except that the binder uses a common phenolic resin.
Comparative example 2
The raw material composition and the preparation method of the corrosion-resistant brick for the incinerator are the same as those of the example 2, and the only difference is that in the preparation of the adhesive biochar modified phenolic resin, the straw biochar is replaced by the peanut shell biochar.
Comparative example 3
The raw material composition and the preparation method of the corrosion-resistant brick for the incinerator are the same as those of the example 2, and the only difference is that in the preparation of the adhesive biochar modified phenolic resin, the straw biochar is replaced by the walnut shell biochar.
Comparative example 4
The raw material composition and the preparation method of the corrosion-resistant brick for the incinerator are the same as those of the example 2, and the only difference is that the content of the ferro-silico-aluminum in the fly ash is 50-60%.
Comparative example 5
The raw material composition and the preparation method of the corrosion-resistant brick for the incinerator are the same as those of example 2, except that the refractory brick is not soaked with the corrosion-resistant paint.
Test example 1
The performance test was carried out on the corrosion-resistant bricks for incinerator prepared in examples 1 to 6 and comparative examples 1 to 5, the test items and test methods are shown in Table 1, and the test results are shown in Table 2.
TABLE 1
TABLE 2
From the above results, it is understood that the corrosion-resistant bricks for incinerator prepared in examples 1 to 6 of the present invention have large compressive strength, small change in re-firing line, small porosity, large bulk density and large refractoriness; therefore, the corrosion-resistant brick for the incinerator prepared by the invention has good fireproof performance. The corrosion-resistant bricks for incinerators prepared in comparative examples 1 and 4 to 5 of the present invention are inferior to the corrosion-resistant bricks for incinerators prepared in examples 1 to 6 in each performance; the performance of the corrosion-resistant bricks for incinerators prepared in comparative examples 2 to 3 was slightly inferior to that of the corrosion-resistant bricks for incinerators prepared in examples 1 to 6, but also superior to that of the corrosion-resistant bricks for incinerators prepared in comparative examples 1, 4 to 5.
Test example 2
The alkali resistance of the incinerator corrosion-resistant bricks prepared in examples 1 to 6 and comparative examples 1 to 5 was measured by the following specific methods: 60mm by 20mm corrosion-resistant bricks for incinerator are saturated with Ca (OH) 2 After being soaked in the solution for 168 hours, the corrosion-resistant bricks for the incinerator prepared in the examples 1-6 have no cracking and peeling phenomena. The corrosion-resistant bricks for incinerators prepared in comparative examples 1 to 4 were free from cracking and peeling, but the corrosion-resistant bricks for incinerators prepared in comparative example 5 were free from cracking and peeling.
The acid resistance of the incinerator corrosion-resistant bricks prepared in examples 1 to 6 was tested, and the specific method was as follows: the acidity resistance of the corrosion-resistant bricks for the incinerator prepared in examples 1-6 is more than or equal to 99.8% before being soaked in 5% HCl solution and after being soaked for 168 hours. The acid resistance of the corrosion-resistant brick for the incinerator prepared in the comparative example 2-3 is more than or equal to 99.8%; the acid resistance of the incinerator corrosion-resistant bricks prepared in comparative examples 1 and 4 to 5 was less than 99.8%, and the acid resistance of the incinerator corrosion-resistant bricks prepared in comparative example 5 was the smallest.
In conclusion, the corrosion-resistant brick for the incinerator prepared by the invention has the advantages of high compressive strength, small change of a re-firing line, small porosity, high volume density and high refractoriness, and thus has good refractory performance. Meanwhile, the volume of the corrosion-resistant brick for the incinerator prepared by the invention has excellent acid and alkali resistance. The incinerator prepared by the method has small corrosion-resistant porosity and large volume density, can effectively prevent corrosion of corrosion-resistant surfaces of the incinerator by corrosives, and also reduces the corrosion speed of corrosion-resistant interiors of the incinerator by corrosives. Therefore, the corrosion-resistant brick for the incinerator prepared by the invention can be used for different parts and different working conditions in the incinerator.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.
Claims (4)
1. The corrosion-resistant brick for the incinerator is characterized by comprising refractory aggregate, filling fine powder and an adhesive;
wherein the refractory aggregate comprises bauxite, corundum and limestone; the filling fine powder comprises graphite powder and laterite powder;
the adhesive is biochar modified phenolic resin;
the weight parts ratio of the refractory aggregate, the filling fine powder and the adhesive is 60-70:25-40:10-20 parts of a base;
the bauxite, corundum and limestone are 40-45 in parts by weight: 15-20:5, a step of; the weight portion ratio of the graphite powder to the laterite powder is 15-20:5-20 parts;
the preparation method of the biochar modified phenolic resin comprises the following steps: mixing biological carbon powder with phenolic resin and heating to prepare the biological carbon modified phenolic resin;
the corrosion-resistant brick for the incinerator further comprises an anti-corrosion coating;
the preparation method of the anti-corrosion coating comprises the following steps: soaking an incinerator with corrosion-resistant bricks in the corrosion-resistant paint to obtain the corrosion-resistant coating;
the anticorrosive paint comprises: fly ash, mineral powder, phenolic resin and water.
2. A method for producing the corrosion-resistant brick for an incinerator according to claim 1, comprising: and (3) keeping the refractory aggregate, the filling fine powder and water at 30-50 ℃ for 20-60min, mixing the adhesive, and keeping the temperature at 200-400 ℃ for 120-240min to obtain the corrosion-resistant brick for the incinerator.
3. The method of claim 2, further comprising immersing the incinerator in a corrosion-resistant paint using a corrosion-resistant brick.
4. Use of a corrosion-resistant brick for an incinerator prepared by the preparation method of any one of claims 2 to 3 in the manufacture and/or repair of an incinerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2943926A1 (en) * | 1978-11-07 | 1980-05-14 | Kurosaki Refractories Co | FIRE-RESISTANT MATERIAL RESISTANT TO CORROSION AND TEMPERATURE CHANGE |
| US5318933A (en) * | 1993-03-24 | 1994-06-07 | Indresco Inc. | Carbon-containing carbon bonded refractories with improved physical properties |
| JP2000109359A (en) * | 1998-10-02 | 2000-04-18 | Kawasaki Steel Corp | Refractory composition and refractory |
| WO2011093020A1 (en) * | 2010-01-26 | 2011-08-04 | リグナイト株式会社 | Composition for refractory brick, refractory brick, and method for producing refractory brick |
| CN102976785A (en) * | 2012-12-12 | 2013-03-20 | 武汉科技大学 | Light Al2O3-SiC-C refractory brick and preparation method thereof |
| CN106823852A (en) * | 2017-03-31 | 2017-06-13 | 东北林业大学 | A kind of phenol-formaldehyde resin modified charcoal strengthens the preparation method of ethanol selectivity infiltrating and vaporizing membrane |
| CN107473759A (en) * | 2017-09-29 | 2017-12-15 | 河南熔金高温材料股份有限公司 | The aluminium carbon lower nozzle brick and its production method of a kind of homogenization material toughness reinforcing |
| CN107954700A (en) * | 2016-10-14 | 2018-04-24 | 河南海纳德新材料有限公司 | Corrosion-resistant corundum refractory brick and preparation method thereof |
| CN110395941A (en) * | 2019-08-01 | 2019-11-01 | 北京理工大学珠海学院 | Charcoal based thermoset applications composite material and preparation method |
| CN114736003A (en) * | 2022-03-28 | 2022-07-12 | 中电华创电力技术研究有限公司 | Preparation method of high-temperature chlorine corrosion resistant ceramic coating for incinerator based on fly ash |
-
2023
- 2023-01-18 CN CN202310056460.5A patent/CN115974568B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2943926A1 (en) * | 1978-11-07 | 1980-05-14 | Kurosaki Refractories Co | FIRE-RESISTANT MATERIAL RESISTANT TO CORROSION AND TEMPERATURE CHANGE |
| US5318933A (en) * | 1993-03-24 | 1994-06-07 | Indresco Inc. | Carbon-containing carbon bonded refractories with improved physical properties |
| JP2000109359A (en) * | 1998-10-02 | 2000-04-18 | Kawasaki Steel Corp | Refractory composition and refractory |
| WO2011093020A1 (en) * | 2010-01-26 | 2011-08-04 | リグナイト株式会社 | Composition for refractory brick, refractory brick, and method for producing refractory brick |
| CN102976785A (en) * | 2012-12-12 | 2013-03-20 | 武汉科技大学 | Light Al2O3-SiC-C refractory brick and preparation method thereof |
| CN107954700A (en) * | 2016-10-14 | 2018-04-24 | 河南海纳德新材料有限公司 | Corrosion-resistant corundum refractory brick and preparation method thereof |
| CN106823852A (en) * | 2017-03-31 | 2017-06-13 | 东北林业大学 | A kind of phenol-formaldehyde resin modified charcoal strengthens the preparation method of ethanol selectivity infiltrating and vaporizing membrane |
| CN107473759A (en) * | 2017-09-29 | 2017-12-15 | 河南熔金高温材料股份有限公司 | The aluminium carbon lower nozzle brick and its production method of a kind of homogenization material toughness reinforcing |
| CN110395941A (en) * | 2019-08-01 | 2019-11-01 | 北京理工大学珠海学院 | Charcoal based thermoset applications composite material and preparation method |
| CN114736003A (en) * | 2022-03-28 | 2022-07-12 | 中电华创电力技术研究有限公司 | Preparation method of high-temperature chlorine corrosion resistant ceramic coating for incinerator based on fly ash |
Non-Patent Citations (2)
| Title |
|---|
| 低碳镁碳耐火材料的研究进展;程峰;王军凯;李发亮;张海军;张少伟;;耐火材料(第05期);第394-400页 * |
| 程峰 ; 王军凯 ; 李发亮 ; 张海军 ; 张少伟 ; .低碳镁碳耐火材料的研究进展.耐火材料.2015,(第05期),第394-400页. * |
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| CN115974568A (en) | 2023-04-18 |
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