CN114380607A - Corundum-mullite gel composite wear-resistant castable and preparation method thereof - Google Patents

Corundum-mullite gel composite wear-resistant castable and preparation method thereof Download PDF

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Publication number
CN114380607A
CN114380607A CN202210090543.1A CN202210090543A CN114380607A CN 114380607 A CN114380607 A CN 114380607A CN 202210090543 A CN202210090543 A CN 202210090543A CN 114380607 A CN114380607 A CN 114380607A
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parts
corundum
mullite
castable
portions
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申金龙
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Zhengzhou Jinheyuan Refractory Co ltd
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Zhengzhou Jinheyuan Refractory Co ltd
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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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    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
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    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
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    • C04B2235/3427—Silicates other than clay, e.g. water glass
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Abstract

The invention relates to the technical field of castable, and discloses a corundum-mullite gel composite wear-resistant castable which comprises the following raw materials in parts by weight: 800 portions of corundum particles, 280 portions of mullite powder, 150 portions of aluminum titanate, 70 to 150 portions of oxide micropowder, 10 to 50 portions of composite binder and 1 to 5 portions of composite explosion-proof agent, wherein the particle diameter of the corundum particles is 5mm to 10 mm. The corundum-mullite gel composite wear-resistant castable and the preparation method thereof are characterized in that corundum particles, mullite powder, aluminum titanate and oxide micro powder are mixed and poured into a pouring material, then the pouring material is subjected to punching treatment, and then the punched pouring material is subjected to intermittent baking, so that the castable after baking and forming is outstanding in wear resistance and good in overall high-temperature resistance, the advantage of long service life is achieved, and the problems that the overall quality of the existing refractory castable is not stable enough and the service life of the refractory castable is seriously shortened are solved.

Description

Corundum-mullite gel composite wear-resistant castable and preparation method thereof
Technical Field
The invention relates to the technical field of casting materials, in particular to a corundum-mullite gel composite wear-resistant casting material and a preparation method thereof.
Background
The kiln head cover part of the cement rotary kiln and the hot end part of the grate cooler are considered to be one of the weakest links in the whole kiln lining system, the kiln head cover part is taken as an example, the kiln head cover part is a blanking point of a clinker finished product, the temperature is up to more than 1150 ℃, alkali in the clinker can be separated out in the clinker cooling process, secondary and third air taking ports are used in the system, and the system has the service cycle of only 6-8 months due to high temperature, large heat dissipation, wind erosion and alkali erosion in the operation process, is short in time and is not uniform with the standard overhaul time of a cement kiln system, so that the kiln needs to be independently stopped for treatment.
The existing lining refractory materials of a kiln head cover part and a hot end part mainly comprise two types of shaping and unshaped parts, wherein the shaping refractory material refers to that a layer of refractory hanging brick is hung on the inner side of the part firstly, and then two adjacent hanging bricks are bonded through refractory mortar so as to achieve the purpose of basically preventing flames from penetrating through gaps, but the scheme of the shaping refractory material has the following defects: firstly, the hanging operation of the hanging brick is troublesome, the subsequent bonding operation of the refractory mortar is more troublesome, the whole construction process is complicated, and the cost is high; secondly, the development trend of the kiln head cover part and the hot end part is in a large-scale direction, so that the hanging operation and the bonding operation are more difficult, the conditions of large-scale abrasion, cold and hot mutation and thermal shock on the hanging brick and the refractory mortar are more frequent, the existing refractory castable adopts a relatively low-grade natural alumina raw material, the difference of the impurity types and the content is larger, the existing refractory castable is influenced by the traditional firing process and the manual sorting process, the overall quality is not stable enough, the processing is not fine enough, the uniformity is poor, and finally the problems of unstable performance indexes and non-uniform damage rate of the refractory castable are caused, the service lives of the refractory castable at the kiln head cover part and the hot end part are seriously reduced, and the corundum mullite gel composite wear-resistant castable and the preparation method thereof are provided to solve the problems.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a corundum-mullite gel composite wear-resistant castable and a preparation method thereof, which have the advantages of long service life and the like, and solve the problems that the existing refractory castable is not stable enough in overall quality and the service life of the refractory castable is seriously shortened.
(II) technical scheme
In order to achieve the purpose of long service life, the invention provides the following technical scheme: the corundum-mullite gel composite wear-resistant castable comprises the following raw materials in parts by weight: 800 portions of corundum particles, 280 portions of mullite powder, 150 portions of aluminum titanate, 70 to 150 portions of oxide micropowder, 10 to 50 portions of composite binder and 1 to 5 portions of composite explosion-proof agent.
Furthermore, the diameter of the corundum particles is 5mm-10 mm.
Further, the fineness of the mullite powder is 200-350 meshes.
Further, the aluminum titanate is formed by mixing pseudo-boehmite and amorphous silica micro powder.
Further, the oxide micropowder is any one or mixture of more of alumina micropowder.
Further, the feed comprises the following raw materials in parts by weight: 500 parts of corundum particles, 150 parts of mullite powder, 150 parts of aluminum titanate, 70 parts of oxide micropowder, 10 parts of composite binder and 1 part of composite explosion-proof agent.
Further, the feed comprises the following raw materials in parts by weight: 650 parts of corundum particles, 220 parts of mullite powder, 200 parts of aluminum titanate, 110 parts of oxide micropowder, 30 parts of composite binder and 3 parts of composite explosion-proof agent.
Further, the feed comprises the following raw materials in parts by weight: 800 parts of corundum particles, 280 parts of mullite powder, 260 parts of aluminum titanate, 150 parts of oxide micropowder, 50 parts of composite binder and 5 parts of composite explosion-proof agent.
The invention aims to solve another technical problem of providing a preparation method of a corundum-mullite gel composite wear-resistant castable, which comprises the following steps:
1) preparing the raw materials in the weight part ratio;
2) preparing aluminum titanate from pseudo-boehmite and amorphous silica micro powder;
3) taking the raw materials obtained in the step 1) and the step 2) for shaping and pouring;
4) punching the castable in the step 3);
5) baking the castable in the step 4);
6) and (5) cooling the casting material in the step 5) to obtain the shaped casting material.
(III) advantageous effects
Compared with the prior art, the invention provides the corundum-mullite gel composite wear-resistant castable and the preparation method thereof, and the corundum-mullite gel composite wear-resistant castable has the following beneficial effects:
the corundum-mullite gel composite wear-resistant castable and the preparation method thereof are characterized in that corundum particles, mullite powder, aluminum titanate and oxide micro powder are mixed and poured into a pouring material, then the pouring material is subjected to punching treatment, and then the punched pouring material is subjected to intermittent baking, so that the castable after baking and forming is outstanding in wear resistance and good in overall high-temperature resistance, the advantage of long service life is achieved, and the problems that the overall quality of the existing refractory castable is not stable enough and the service life of the refractory castable is seriously shortened are solved.
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 embodiment is as follows:
the corundum-mullite gel composite wear-resistant castable comprises the following raw materials in parts by weight: 500 parts of corundum particles, 150 parts of mullite powder, 150 parts of aluminum titanate, 70 parts of oxide micropowder, 10 parts of composite binder and 1 part of composite explosion-proof agent.
Wherein the diameter of corundum particles is 5mm-10mm, and the fineness of mullite powder is 200 meshes-350 meshes.
Wherein, the aluminum titanate is formed by mixing pseudo-boehmite and amorphous silicon dioxide micro powder, and the oxide micro powder is formed by mixing any one or more of alumina micro powder.
The invention aims to solve another technical problem of providing a preparation method of a corundum-mullite gel composite wear-resistant castable, which comprises the following steps:
1) preparing the raw materials in the weight part ratio;
2) preparing aluminum titanate from pseudo-boehmite and amorphous silica micro powder;
3) taking the raw materials obtained in the step 1) and the step 2) for shaping and pouring;
4) punching the castable in the step 3);
5) baking the castable in the step 4);
6) and (5) cooling the casting material in the step 5) to obtain the shaped casting material.
The aperture of the pouring material punching treatment in the step 4) is 2mm-10mm, the pouring material baking treatment in the step 5) is intermittent high-temperature baking, the baking temperature is gradually increased and is 600 ℃ to 800 ℃, and the pouring material cooling treatment in the step 6) can be realized by blowing air by using a cooling fan.
The casting material prepared by the proportion ratio has better wear resistance, strength and high temperature resistance than the existing casting material, and achieves the advantage of long service life.
Example two:
the corundum-mullite gel composite wear-resistant castable comprises the following raw materials in parts by weight: 550 parts of corundum particles, 170 parts of mullite powder, 170 parts of aluminum titanate, 80 parts of oxide micropowder, 20 parts of composite binder and 2 parts of composite explosion-proof agent.
Wherein the diameter of corundum particles is 5mm-10mm, and the fineness of mullite powder is 200 meshes-350 meshes.
Wherein, the aluminum titanate is formed by mixing pseudo-boehmite and amorphous silicon dioxide micro powder, and the oxide micro powder is formed by mixing any one or more of alumina micro powder.
The invention aims to solve another technical problem of providing a preparation method of a corundum-mullite gel composite wear-resistant castable, which comprises the following steps:
1) preparing the raw materials in the weight part ratio;
2) preparing aluminum titanate from pseudo-boehmite and amorphous silica micro powder;
3) taking the raw materials obtained in the step 1) and the step 2) for shaping and pouring;
4) punching the castable in the step 3);
5) baking the castable in the step 4);
6) and (5) cooling the casting material in the step 5) to obtain the shaped casting material.
The aperture of the pouring material punching treatment in the step 4) is 2mm-10mm, the pouring material baking treatment in the step 5) is intermittent high-temperature baking, the baking temperature is gradually increased and is 600 ℃ to 800 ℃, and the pouring material cooling treatment in the step 6) can be realized by blowing air by using a cooling fan.
The casting material prepared by the proportion ratio has better wear resistance, strength and high temperature resistance than the existing casting material, and achieves the advantage of long service life.
Example three:
the corundum-mullite gel composite wear-resistant castable comprises the following raw materials in parts by weight: 600 parts of corundum particles, 190 parts of mullite powder, 190 parts of aluminum titanate, 90 parts of oxide micropowder, 30 parts of composite binder and 3 parts of composite explosion-proof agent.
Wherein the diameter of corundum particles is 5mm-10mm, and the fineness of mullite powder is 200 meshes-350 meshes.
Wherein, the aluminum titanate is formed by mixing pseudo-boehmite and amorphous silicon dioxide micro powder, and the oxide micro powder is formed by mixing any one or more of alumina micro powder.
The invention aims to solve another technical problem of providing a preparation method of a corundum-mullite gel composite wear-resistant castable, which comprises the following steps:
1) preparing the raw materials in the weight part ratio;
2) preparing aluminum titanate from pseudo-boehmite and amorphous silica micro powder;
3) taking the raw materials obtained in the step 1) and the step 2) for shaping and pouring;
4) punching the castable in the step 3);
5) baking the castable in the step 4);
6) and (5) cooling the casting material in the step 5) to obtain the shaped casting material.
The aperture of the pouring material punching treatment in the step 4) is 2mm-10mm, the pouring material baking treatment in the step 5) is intermittent high-temperature baking, the baking temperature is gradually increased and is 600 ℃ to 800 ℃, and the pouring material cooling treatment in the step 6) can be realized by blowing air by using a cooling fan.
The casting material prepared by the proportion ratio has better wear resistance, strength and high temperature resistance than the existing casting material, and achieves the advantage of long service life.
Example four:
the corundum-mullite gel composite wear-resistant castable comprises the following raw materials in parts by weight: 650 parts of corundum particles, 210 parts of mullite powder, 210 parts of aluminum titanate, 100 parts of oxide micropowder, 40 parts of composite binder and 4 parts of composite explosion-proof agent.
Wherein the diameter of corundum particles is 5mm-10mm, and the fineness of mullite powder is 200 meshes-350 meshes.
Wherein, the aluminum titanate is formed by mixing pseudo-boehmite and amorphous silicon dioxide micro powder, and the oxide micro powder is formed by mixing any one or more of alumina micro powder.
The invention aims to solve another technical problem of providing a preparation method of a corundum-mullite gel composite wear-resistant castable, which comprises the following steps:
1) preparing the raw materials in the weight part ratio;
2) preparing aluminum titanate from pseudo-boehmite and amorphous silica micro powder;
3) taking the raw materials obtained in the step 1) and the step 2) for shaping and pouring;
4) punching the castable in the step 3);
5) baking the castable in the step 4);
6) and (5) cooling the casting material in the step 5) to obtain the shaped casting material.
The aperture of the pouring material punching treatment in the step 4) is 2mm-10mm, the pouring material baking treatment in the step 5) is intermittent high-temperature baking, the baking temperature is gradually increased and is 600 ℃ to 800 ℃, and the pouring material cooling treatment in the step 6) can be realized by blowing air by using a cooling fan.
The casting material prepared by the proportion ratio has better wear resistance, strength and high temperature resistance than the existing casting material, and achieves the advantage of long service life.
Example five:
the corundum-mullite gel composite wear-resistant castable comprises the following raw materials in parts by weight: 700 parts of corundum particles, 230 parts of mullite powder, 230 parts of aluminum titanate, 110 parts of oxide micropowder, 50 parts of composite binder and 5 parts of composite explosion-proof agent.
Wherein the diameter of corundum particles is 5mm-10mm, and the fineness of mullite powder is 200 meshes-350 meshes.
Wherein, the aluminum titanate is formed by mixing pseudo-boehmite and amorphous silicon dioxide micro powder, and the oxide micro powder is formed by mixing any one or more of alumina micro powder.
The invention aims to solve another technical problem of providing a preparation method of a corundum-mullite gel composite wear-resistant castable, which comprises the following steps:
1) preparing the raw materials in the weight part ratio;
2) preparing aluminum titanate from pseudo-boehmite and amorphous silica micro powder;
3) taking the raw materials obtained in the step 1) and the step 2) for shaping and pouring;
4) punching the castable in the step 3);
5) baking the castable in the step 4);
6) and (5) cooling the casting material in the step 5) to obtain the shaped casting material.
The aperture of the pouring material punching treatment in the step 4) is 2mm-10mm, the pouring material baking treatment in the step 5) is intermittent high-temperature baking, the baking temperature is gradually increased and is 600 ℃ to 800 ℃, and the pouring material cooling treatment in the step 6) can be realized by blowing air by using a cooling fan.
The casting material prepared by the proportion ratio has better wear resistance, strength and high temperature resistance than the existing casting material, and achieves the advantage of long service life.
Example six:
the corundum-mullite gel composite wear-resistant castable comprises the following raw materials in parts by weight: 750 parts of corundum particles, 250 parts of mullite powder, 250 parts of aluminum titanate, 120 parts of oxide micropowder, 50 parts of composite binder and 5 parts of composite explosion-proof agent.
Wherein the diameter of corundum particles is 5mm-10mm, and the fineness of mullite powder is 200 meshes-350 meshes.
Wherein, the aluminum titanate is formed by mixing pseudo-boehmite and amorphous silicon dioxide micro powder, and the oxide micro powder is formed by mixing any one or more of alumina micro powder.
The invention aims to solve another technical problem of providing a preparation method of a corundum-mullite gel composite wear-resistant castable, which comprises the following steps:
1) preparing the raw materials in the weight part ratio;
2) preparing aluminum titanate from pseudo-boehmite and amorphous silica micro powder;
3) taking the raw materials obtained in the step 1) and the step 2) for shaping and pouring;
4) punching the castable in the step 3);
5) baking the castable in the step 4);
6) and (5) cooling the casting material in the step 5) to obtain the shaped casting material.
The aperture of the pouring material punching treatment in the step 4) is 2mm-10mm, the pouring material baking treatment in the step 5) is intermittent high-temperature baking, the baking temperature is gradually increased and is 600 ℃ to 800 ℃, and the pouring material cooling treatment in the step 6) can be realized by blowing air by using a cooling fan.
The casting material prepared by the proportion ratio has better wear resistance, strength and high temperature resistance than the existing casting material, and achieves the advantage of long service life.
Example seven:
the corundum-mullite gel composite wear-resistant castable comprises the following raw materials in parts by weight: 800 parts of corundum particles, 280 parts of mullite powder, 260 parts of aluminum titanate, 150 parts of oxide micropowder, 50 parts of composite binder and 5 parts of composite explosion-proof agent.
Wherein the diameter of corundum particles is 5mm-10mm, and the fineness of mullite powder is 200 meshes-350 meshes.
Wherein, the aluminum titanate is formed by mixing pseudo-boehmite and amorphous silicon dioxide micro powder, and the oxide micro powder is formed by mixing any one or more of alumina micro powder.
The invention aims to solve another technical problem of providing a preparation method of a corundum-mullite gel composite wear-resistant castable, which comprises the following steps:
1) preparing the raw materials in the weight part ratio;
2) preparing aluminum titanate from pseudo-boehmite and amorphous silica micro powder;
3) taking the raw materials obtained in the step 1) and the step 2) for shaping and pouring;
4) punching the castable in the step 3);
5) baking the castable in the step 4);
6) and (5) cooling the casting material in the step 5) to obtain the shaped casting material.
The aperture of the pouring material punching treatment in the step 4) is 2mm-10mm, the pouring material baking treatment in the step 5) is intermittent high-temperature baking, the baking temperature is gradually increased and is 600 ℃ to 800 ℃, and the pouring material cooling treatment in the step 6) can be realized by blowing air by using a cooling fan.
The casting material prepared by the proportion ratio has better wear resistance, strength and high temperature resistance than the existing casting material, and achieves the advantage of long service life.
The invention has the beneficial effects that: the corundum-mullite gel composite wear-resistant castable and the preparation method thereof are characterized in that corundum particles, mullite powder, aluminum titanate and oxide micro powder are mixed and poured into a pouring material, then the pouring material is subjected to punching treatment, and then the punched pouring material is subjected to intermittent baking, so that the castable after baking and forming is outstanding in wear resistance and good in overall high-temperature resistance, the advantage of long service life is achieved, and the problems that the overall quality of the existing refractory castable is not stable enough and the service life of the refractory castable is seriously shortened are solved.
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 (9)

1. The corundum-mullite gel composite wear-resistant castable is characterized in that: the material comprises the following raw materials in parts by weight: 800 portions of corundum particles, 280 portions of mullite powder, 150 portions of aluminum titanate, 70 to 150 portions of oxide micropowder, 10 to 50 portions of composite binder and 1 to 5 portions of composite explosion-proof agent.
2. The corundum-mullite gel composite wear-resistant castable material according to claim 1, characterized in that: the diameter of the corundum particles is 5mm-10 mm.
3. The corundum-mullite gel composite wear-resistant castable material according to claim 1, characterized in that: the fineness of the mullite powder is 200-350 meshes.
4. The corundum-mullite gel composite wear-resistant castable material according to claim 1, characterized in that: the aluminum titanate is prepared by mixing pseudo-boehmite and amorphous silicon dioxide micro powder.
5. The corundum-mullite gel composite wear-resistant castable material according to claim 1, characterized in that: the oxide micropowder is any one or a mixture of more of alumina micropowder.
6. The corundum-mullite gel composite wear-resistant castable material according to claim 1, characterized in that: the material comprises the following raw materials in parts by weight: 500 parts of corundum particles, 150 parts of mullite powder, 150 parts of aluminum titanate, 70 parts of oxide micropowder, 10 parts of composite binder and 1 part of composite explosion-proof agent.
7. The corundum-mullite gel composite wear-resistant castable material according to claim 1, characterized in that: the material comprises the following raw materials in parts by weight: 650 parts of corundum particles, 220 parts of mullite powder, 200 parts of aluminum titanate, 110 parts of oxide micropowder, 30 parts of composite binder and 3 parts of composite explosion-proof agent.
8. The corundum-mullite gel composite wear-resistant castable material according to claim 1, characterized in that: the material comprises the following raw materials in parts by weight: 800 parts of corundum particles, 280 parts of mullite powder, 260 parts of aluminum titanate, 150 parts of oxide micropowder, 50 parts of composite binder and 5 parts of composite explosion-proof agent.
9. The preparation method of the corundum-mullite gel composite wear-resistant castable is characterized by comprising the following steps:
1) preparing the raw materials in the weight part ratio;
2) preparing aluminum titanate from pseudo-boehmite and amorphous silica micro powder;
3) taking the raw materials obtained in the step 1) and the step 2) for shaping and pouring;
4) punching the castable in the step 3);
5) baking the castable in the step 4);
6) and (5) cooling the casting material in the step 5) to obtain the shaped casting material.
CN202210090543.1A 2022-01-26 2022-01-26 Corundum-mullite gel composite wear-resistant castable and preparation method thereof Pending CN114380607A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102584313A (en) * 2011-12-24 2012-07-18 山东科技大学 In-situ authigenic mullite whister reinforced aluminum titanate porous ceramic material and preparation method thereof
EP3053898A1 (en) * 2015-02-06 2016-08-10 Center for Abrasives and Refractories Research & Development C.A.R.R.D. GmbH Sintered shaped abrasive grains on basis of aluminum oxide comprising mineralogical phases consisting of mullite, tialite and/or armalcolite, and baddeleyite and/or srilankite and a method for their production
CN108178658A (en) * 2018-01-17 2018-06-19 山东科技大学 A kind of flyash is the method that raw material prepares aluminum titanate-mullite composite porous ceramic
CN110981446A (en) * 2019-12-12 2020-04-10 江苏三恒高技术窑具有限公司 Volume-stable high-temperature bedplate and manufacturing method thereof
CN113636851A (en) * 2021-09-10 2021-11-12 长兴兴鹰新型耐火建材有限公司 Corundum-mullite gel composite wear-resistant castable and baking and setting method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102584313A (en) * 2011-12-24 2012-07-18 山东科技大学 In-situ authigenic mullite whister reinforced aluminum titanate porous ceramic material and preparation method thereof
EP3053898A1 (en) * 2015-02-06 2016-08-10 Center for Abrasives and Refractories Research & Development C.A.R.R.D. GmbH Sintered shaped abrasive grains on basis of aluminum oxide comprising mineralogical phases consisting of mullite, tialite and/or armalcolite, and baddeleyite and/or srilankite and a method for their production
CN108178658A (en) * 2018-01-17 2018-06-19 山东科技大学 A kind of flyash is the method that raw material prepares aluminum titanate-mullite composite porous ceramic
CN110981446A (en) * 2019-12-12 2020-04-10 江苏三恒高技术窑具有限公司 Volume-stable high-temperature bedplate and manufacturing method thereof
CN113636851A (en) * 2021-09-10 2021-11-12 长兴兴鹰新型耐火建材有限公司 Corundum-mullite gel composite wear-resistant castable and baking and setting method thereof

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Application publication date: 20220422