CN112028644A - Fire-resistant binder for coke oven and preparation method thereof - Google Patents
Fire-resistant binder for coke oven and preparation method thereof Download PDFInfo
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- CN112028644A CN112028644A CN202010826719.6A CN202010826719A CN112028644A CN 112028644 A CN112028644 A CN 112028644A CN 202010826719 A CN202010826719 A CN 202010826719A CN 112028644 A CN112028644 A CN 112028644A
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- 239000011230 binding agent Substances 0.000 title claims abstract description 45
- 239000000571 coke Substances 0.000 title claims abstract description 37
- 230000009970 fire resistant effect Effects 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims abstract description 36
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 19
- 239000012745 toughening agent Substances 0.000 claims abstract description 16
- 229910000166 zirconium phosphate Inorganic materials 0.000 claims abstract description 16
- LEHFSLREWWMLPU-UHFFFAOYSA-B zirconium(4+);tetraphosphate Chemical compound [Zr+4].[Zr+4].[Zr+4].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LEHFSLREWWMLPU-UHFFFAOYSA-B 0.000 claims abstract description 16
- 229920003257 polycarbosilane Polymers 0.000 claims abstract description 15
- 241000779819 Syncarpia glomulifera Species 0.000 claims abstract description 12
- 239000001739 pinus spp. Substances 0.000 claims abstract description 12
- 229940036248 turpentine Drugs 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 8
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims description 26
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 15
- 239000002245 particle Substances 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 12
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 claims description 10
- 229920006221 acetate fiber Polymers 0.000 claims description 10
- 239000001863 hydroxypropyl cellulose Substances 0.000 claims description 10
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 claims description 10
- 238000000034 method Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 239000001293 FEMA 3089 Substances 0.000 description 2
- 239000007767 bonding agent Substances 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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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
-
- 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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
-
- 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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
- C04B2235/3227—Lanthanum oxide or oxide-forming salts thereof
-
- 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
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
- C04B2235/425—Graphite
-
- 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
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/447—Phosphates or phosphites, e.g. orthophosphate or hypophosphite
-
- 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
- C04B2235/48—Organic compounds becoming part of a ceramic after heat treatment, e.g. carbonising phenol resins
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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
- C04B2235/48—Organic compounds becoming part of a ceramic after heat treatment, e.g. carbonising phenol resins
- C04B2235/483—Si-containing organic compounds, e.g. silicone resins, (poly)silanes, (poly)siloxanes or (poly)silazanes
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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
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
- C04B2235/5216—Inorganic
- C04B2235/524—Non-oxidic, e.g. borides, carbides, silicides or nitrides
- C04B2235/5244—Silicon carbide
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Ceramic Products (AREA)
Abstract
The invention discloses a coke oven fire-resistant binder which comprises the following raw materials in parts by weight: 55-70 parts of graphite powder, 20-30 parts of zirconium phosphate, 12-18 parts of polycarbosilane, 10-15 parts of lanthanum oxide, 3-9 parts of aluminum oxide, 1-7 parts of a toughening agent and 1.5-3 parts of turpentine. The coke oven fire-resistant binder provided by the invention has high bonding strength, the bonding strength in any temperature range from normal temperature to the highest use temperature is good, and the bonding between different materials can be realized, so that the technical problems that the existing binder has no bonding strength in a middle-temperature section and can not realize the bonding between different materials are solved; the invention also discloses a preparation method of the coke oven fire-resistant binder, and the preparation method is simple in process.
Description
Technical Field
The invention belongs to the technical field of binder materials, and particularly relates to a coke oven fire-resistant binder and a preparation method thereof.
Background
The bonding and the building of the refractory materials in the building of various high-temperature kilns need to use a bonding agent, and the high temperature resistance of the bonding agent is one of important factors influencing the strength of the refractory materials. The bonding strength of the binder is one of the main factors affecting the structural integrity and sealing performance of the kiln. The bonding strength of the common binder comes from soft clay in the ingredients, and the soft clay does not have strength at the time because crystal water disappears but does not reach a sintering state at the intermediate temperature of 650-1000 ℃, so that the use requirement of the intermediate temperature section of the intermediate temperature kiln or the high temperature kiln can not be met. Under the condition that the positive pressure in the kiln is larger, the adhesive in the butt joint can be quickly hollowed out due to no adhesive strength, the internal fire leakage of the bonding failure kiln can cause the energy consumption to increase, and the service life of the kiln can be shortened. And the existing common binder can not realize the bonding of different materials in the kiln, and needs to be used after being stirred on a construction site, thereby bringing inconvenience to the construction.
Therefore, it is necessary to develop a coke oven fire-resistant binder to overcome the defects that the existing binder has no bonding strength in the medium-temperature section, has single function and cannot realize bonding between different materials.
Disclosure of Invention
The invention aims to overcome the technical defects, and the invention aims to provide a coke oven fire-resistant adhesive which has high bonding strength in any temperature range from normal temperature to the highest use temperature and can realize bonding of different materials, so that the technical problems that the existing adhesive has no bonding strength in a middle-temperature section and can not realize bonding of different materials are solved; the second aspect of the invention aims to provide a preparation method of the coke oven fire-resistant binder, which is simple in process.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a coke oven fire-resistant binder, which comprises the following raw materials in parts by weight: 55-70 parts of graphite powder, 20-30 parts of zirconium phosphate, 12-18 parts of polycarbosilane, 10-15 parts of lanthanum oxide, 3-9 parts of aluminum oxide, 1-7 parts of a toughening agent and 1.5-3 parts of turpentine.
In a second aspect, the invention provides a preparation method of a coke oven fire-resistant binder, which comprises the following steps:
preparing materials according to parts by weight;
uniformly stirring and mixing graphite powder, zirconium phosphate, polycarbosilane, lanthanum oxide, nano-alumina and a toughening agent to obtain a mixture;
and uniformly stirring and mixing the mixture and the turpentine to obtain a finished product.
Compared with the prior art, the invention has the beneficial effects that:
1. the coke oven fire-resistant binder provided by the invention takes graphite powder and zirconium phosphate as main raw materials, and the graphite powder and the zirconium phosphate can play roles in high fracture, high compression resistance and high water resistance after being mixed; the silicon carbide fiber formed by the polycarbosilane has good tensile strength and heat transfer capacity and lower thermal expansion coefficient, can effectively reduce internal stress, enhance the thermal shock resistance of the binder, prevent the cracking of the material and increase the oxidation resistance of the binder; the lanthanum oxide and the aluminum oxide have the characteristics of high temperature resistance, large specific surface area and high hardness, and can play a role in reinforcing and toughening; turpentine, graphite powder, zirconium phosphate, polycarbosilane, lanthanum oxide, nano aluminum oxide and a toughening agent are solidified to form a bonding layer with high strength; according to the invention, the components are matched according to a certain proportion, so that the obtained coke oven fire-resistant binder has high fire-resistant temperature and high bonding strength, the bonding strength in any temperature range from normal temperature to the highest use temperature is more than 3MPa, and the defect that most of the conventional binders have no bonding strength at 650-1000 ℃ or even higher temperature is overcome; the bonding between different materials can be realized, and the bonding effect is good;
2. the preparation method of the coke oven fire-resistant binder provided by the invention is simple and convenient, is convenient to use, has low requirement on environment and has strong applicability.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the invention provides a coke oven fire-resistant binder which comprises the following raw materials in parts by weight: 55-70 parts of graphite powder, 20-30 parts of zirconium phosphate, 12-18 parts of polycarbosilane, 10-15 parts of lanthanum oxide, 3-9 parts of aluminum oxide, 1-7 parts of a toughening agent and 1.5-3 parts of turpentine.
In the embodiment of the invention, the graphite powder is nano graphite powder, and the particle size of the nano graphite powder is 30-80 nm.
In the embodiment of the invention, the purity of the lanthanum oxide is more than 99%, and the particle size range of the lanthanum oxide is 3-8 um.
In the embodiment of the invention, the alumina is nano alumina, and the particle size range of the nano alumina is 20-30 nm.
In an embodiment of the invention, the toughening agent is a mixture of acetate fibers and hydroxypropyl cellulose.
In order to enable the fire-resistant binder to have higher strength and toughness, in some preferred embodiments of the invention, the toughening agent is acetate fiber and hydroxypropyl cellulose in a mass ratio of 2-4: 1.
The embodiment of the invention also provides a preparation method of the coke oven fire-resistant binder, which comprises the following steps:
(1) preparing materials according to parts by weight;
(2) uniformly stirring and mixing graphite powder, zirconium phosphate, polycarbosilane, lanthanum oxide, nano-alumina and a toughening agent to obtain a mixture;
(3) and uniformly stirring and mixing the mixture and the turpentine to obtain a finished product.
In the embodiment of the invention, the stirring speed in the step (2) is 2000-3000 r/min, and the stirring time is 25-35 min.
In the embodiment of the invention, the stirring speed in the step (3) is 500-800 r/min, and the stirring time is 10-15 min.
In order to further illustrate the present invention, the following examples are given to further illustrate the present invention. The experimental methods used in the examples of the present invention are all conventional methods unless otherwise specified; materials, reagents and the like used in examples of the present invention are commercially available unless otherwise specified.
Example 1:
the embodiment 1 of the invention provides a coke oven fire-resistant binder, which comprises the following raw materials in parts by weight: 65 parts of nano graphite powder (with the particle size of 50nm), 25 parts of zirconium phosphate, 15 parts of polycarbosilane, 12 parts of lanthanum oxide (with the particle size of 5um), 6 parts of nano aluminum oxide (with the particle size of 20nm), 4 parts of a flexibilizer and 2 parts of turpentine; wherein the toughening agent is acetate fiber and hydroxypropyl cellulose according to a mass ratio of 3: 1.
The embodiment of the invention also provides a preparation method of the coke oven fire-resistant binder, which comprises the following steps:
(1) preparing materials according to parts by weight;
(2) stirring and mixing nano graphite powder, zirconium phosphate, polycarbosilane, lanthanum oxide, nano alumina, acetate fiber and hydroxypropyl cellulose at the stirring speed of 2500r/min for 30min to obtain a mixture;
(3) and stirring and mixing the mixture and the turpentine oil at the stirring speed of 700r/min for 12min to obtain a finished product.
Example 2:
the embodiment 2 of the invention provides a coke oven fire-resistant binder, which comprises the following raw materials in parts by weight: 55 parts of nano graphite powder (with the particle size of 30nm), 20 parts of zirconium phosphate, 12 parts of polycarbosilane, 10 parts of lanthanum oxide (with the particle size of 3um), 3 parts of nano aluminum oxide (with the particle size of 20nm), 1 part of flexibilizer and 1.5 parts of turpentine; wherein the toughening agent is acetate fiber and hydroxypropyl cellulose according to a mass ratio of 2: 1.
The embodiment of the invention also provides a preparation method of the coke oven fire-resistant binder, which comprises the following steps:
(1) preparing materials according to parts by weight;
(2) stirring and mixing nano graphite powder, zirconium phosphate, polycarbosilane, lanthanum oxide, nano alumina, acetate fiber and hydroxypropyl cellulose at the stirring speed of 2000r/min for 35min to obtain a mixture;
(3) and stirring and mixing the mixture and the turpentine at the stirring speed of 500r/min for 15min to obtain a finished product.
Example 3:
the embodiment 3 of the invention provides a coke oven fire-resistant binder, which comprises the following raw materials in parts by weight: 70 parts of nano graphite powder (with the particle size of 80nm), 30 parts of zirconium phosphate, 18 parts of polycarbosilane, 15 parts of lanthanum oxide (with the particle size of 8um), 9 parts of nano aluminum oxide (with the particle size of 30nm), 7 parts of a toughening agent and 3 parts of turpentine; wherein the toughening agent is an acetate fiber and hydroxypropyl cellulose in a mass ratio of 4: 1.
The embodiment of the invention also provides a preparation method of the coke oven fire-resistant binder, which comprises the following steps:
(1) preparing materials according to parts by weight;
(2) stirring and mixing nano graphite powder, zirconium phosphate, polycarbosilane, lanthanum oxide, nano alumina, acetate fiber and hydroxypropyl cellulose at the stirring speed of 3000r/min for 25min to obtain a mixture;
(3) and stirring and mixing the mixture and the turpentine oil at the stirring speed of 800r/min for 10min to obtain a finished product.
The coke oven fire resistant adhesives prepared in examples 1 to 3 were tested for their performance, adhesion effect in the medium temperature zone and adhesion effect between different materials, and the results are shown in tables 1 to 3.
TABLE 1 Performance index of the coke oven refractory Binder in examples 1 to 3
TABLE 2 binding Effect of coke oven refractory Binder in examples 1 to 3 in the Medium temperature zone
| Temperature of | Example 1 | Example 2 | Example 3 |
| Compressive strength/MPa at 650 ℃ for 3h | ＞3 | ＞3 | ＞3 |
| Compressive strength/MPa at 800 ℃ for 3h | ＞3 | ＞3 | ＞3 |
| Compressive strength/MPa at 100 ℃ for 3h | ＞3 | ＞3 | ＞3 |
TABLE 3 binding Effect of coke oven refractory Binders between different materials in examples 1-3
As can be seen from the experimental results in tables 2 to 4, the highest fire-resistant temperature of the coke oven fire-resistant binder of the invention can reach 1680 ℃, the binding strength in the middle temperature zone (650-1000 ℃) can reach more than 3MPa, and the coke oven fire-resistant binder can realize the binding of different materials and achieve good binding effect.
The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
Claims (9)
1. The coke oven fire-resistant binder is characterized by comprising the following raw materials in parts by weight: 55-70 parts of graphite powder, 20-30 parts of zirconium phosphate, 12-18 parts of polycarbosilane, 10-15 parts of lanthanum oxide, 3-9 parts of aluminum oxide, 1-7 parts of a toughening agent and 1.5-3 parts of turpentine.
2. The coke oven fire-resistant binder of claim 1, wherein the graphite powder is nano graphite powder, and the particle size of the nano graphite powder is in the range of 30-80 nm.
3. The coke oven fire resistant binder of claim 1 wherein the lanthanum oxide has a purity of greater than 99% and a particle size in the range of 3 to 8 um.
4. The coke oven fire resistant binder of claim 1 wherein the alumina is nano alumina, and the nano alumina has a particle size in the range of 20 to 30 nm.
5. The coke oven fire resistant binder of claim 1 wherein the toughening agent is a mixture of acetate fiber and hydroxypropyl cellulose.
6. The coke oven fire-resistant binder as claimed in claim 5, wherein the toughening agent is an acetate fiber and hydroxypropyl cellulose in a mass ratio of 2-4: 1.
7. The preparation method of the fire-resistant binder for the coke oven according to any one of claims 1 to 6, characterized by comprising the following steps:
preparing materials according to parts by weight;
uniformly stirring and mixing graphite powder, zirconium phosphate, polycarbosilane, lanthanum oxide, nano-alumina and a toughening agent to obtain a mixture;
and uniformly stirring and mixing the mixture and the turpentine to obtain a finished product.
8. The preparation method of the coke oven fire-resistant binder of claim 7, wherein the stirring speed is 2000-3000 r/min and the stirring time is 25-35 min when the mixture is prepared.
9. The preparation method of the coke oven fire-resistant binder of claim 7, wherein the stirring speed is 500-800 r/min and the stirring time is 10-15 min when a finished product is prepared.
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