CN114516757A - Anti-skinning nano lining plate component for cement kiln and processing flow - Google Patents
Anti-skinning nano lining plate component for cement kiln and processing flow Download PDFInfo
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- CN114516757A CN114516757A CN202011309070.7A CN202011309070A CN114516757A CN 114516757 A CN114516757 A CN 114516757A CN 202011309070 A CN202011309070 A CN 202011309070A CN 114516757 A CN114516757 A CN 114516757A
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- 239000004568 cement Substances 0.000 title claims abstract description 31
- 238000012545 processing Methods 0.000 title claims abstract description 10
- 239000002245 particle Substances 0.000 claims abstract description 36
- 239000000843 powder Substances 0.000 claims abstract description 24
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 10
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 10
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 7
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 239000011819 refractory material Substances 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 description 9
- 238000001723 curing Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000005245 sintering Methods 0.000 description 6
- 229910052681 coesite Inorganic materials 0.000 description 5
- 229910052906 cristobalite Inorganic materials 0.000 description 5
- 239000000377 silicon dioxide Substances 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 229910052682 stishovite Inorganic materials 0.000 description 5
- 229910052905 tridymite Inorganic materials 0.000 description 5
- 238000010304 firing Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000009740 moulding (composite fabrication) Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910003465 moissanite Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
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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
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
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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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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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
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—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
- C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3852—Nitrides, e.g. oxynitrides, carbonitrides, oxycarbonitrides, lithium nitride, magnesium nitride
- C04B2235/3873—Silicon nitrides, e.g. silicon carbonitride, silicon oxynitride
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- 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
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5427—Particle size related information expressed by the size of the particles or aggregates thereof millimeter or submillimeter sized, i.e. larger than 0,1 mm
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- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
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- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5454—Particle size related information expressed by the size of the particles or aggregates thereof nanometer sized, i.e. below 100 nm
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
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- C04B2235/9669—Resistance against chemicals, e.g. against molten glass or molten salts
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Abstract
The invention belongs to the technical field of refractory materials, and particularly relates to an anti-skinning nano lining plate component for a cement kiln and a processing flow, wherein the anti-skinning nano lining plate component for the cement kiln and the processing flow comprise first SiC particles with the particle size of 3-5 mm: 6-25 wt%; first SiC particles having a particle diameter of 1 to 3 mm: 28-40 wt%; first SiC particles having a particle size of 0.088 mm to 1 mm: 14-25 wt%; second SiC fine powder having a particle size of 200-: 15-28 wt%; 3-10 wt% of silicon nitride micro powder with the particle size of 2-5 microns; 3-10 wt% of first SiC micropowder with the granularity of 50-100 nm; amorphous high-purity SiO with particle size of 50-100 nm2Ultra-fine powder: 1-5 wt%; 4-5 wt% of polyvinyl alcohol. Wherein: in the first SiC, the content of SiC is more than or equal to 97 wt%, Fe2O3Less than or equal to 0.5 wt%; in the second SiC, the content of SiC is more than or equal to 98 wt%, and Fe2O3Less than or equal to 0.3wt percent. The anti-skinning nano lining board component for cement kiln and its production processThe processing flow has the advantages of increasing the strength, not reacting with cement components in the cement kiln and having good anti-skinning effect.
Description
Technical Field
The invention belongs to the technical field of lining plates, and particularly relates to an anti-skinning nano lining plate for a cement kiln and a processing flow.
Background
The cement rotary kiln belongs to the field of building material equipment, and is one kind of lime kiln. Rotary kilns can be classified into cement rotary kilns, metallurgical chemical rotary kilns and lime rotary kilns according to different materials to be treated. The rotary cement kiln is the main equipment of the cement clinker dry and wet production line.
At present, the parts easy to crust of the cement kiln are usually made of anti-skinning castable which is an unshaped material and mainly comprises SiC and Al2O3，SiO2SiC itself is a non-oxide and is not easily reactive with other oxidesThe bonding strength is formed, the adding amount of SiC is controlled in the preparation process, the content of the SiC of the common anti-skinning casting material is 20-60%, the construction flowability of the SiC raw material is poor, and the actual strength after construction is far lower than the laboratory detection strength. Because the adding amount of SiC is limited, the anti-skinning performance of the SiC can not well meet the requirements of the existing cement production line, particularly the cement production line for cooperatively treating garbage, dangerous waste and industrial sludge; because the actual strength after construction is lower, the service life is shorter under the scouring and abrasion of cement clinker.
Disclosure of Invention
The invention aims to provide a composition of an anti-skinning nano lining plate for a cement kiln and a processing flow thereof, so as to solve the technical problems of the prior anti-skinning castable for the cement kiln, such as poor skinning resistance, wear resistance, erosion resistance and the like.
In order to solve the technical problem, the invention provides an anti-skinning nano lining plate for a cement kiln, which comprises the following components:
first SiC particles having a particle diameter of 3 to 5 mm: 6-25 wt%;
first SiC particles having a particle diameter of 1 to 3 mm: 28-40 wt%;
first SiC particles having a particle size of 0.088 mm to 1 mm: 14-25 wt%;
second SiC fine powder having a particle size of 200-: 15-28 wt%;
3-10 wt% of silicon nitride micro powder with the particle size of 2-5 microns;
3-10 wt% of first SiC micropowder with the granularity of 50-100 nm;
amorphous high-purity SiO with particle size of 50-100 nm2Ultra-fine powder: 1-5 wt%;
4-5 wt% of polyvinyl alcohol.
Further, wherein:
in the first SiC, the content of SiC is more than or equal to 97 wt%, Fe2O3≤0.5wt％；
In the second SiC, the content of SiC is more than or equal to 98 wt%, and Fe2O3≤0.3wt％。
Further, wherein:
the content of silicon nitride in the silicon nitride is more than or equal to 95wt percent.
Further, the components comprise: zr0 with the grain size of 200-325 meshes20-5 wt% of fine powder.
Wherein: ZrO (ZrO)2ZrO in fine powder2≥99wt％。
Further, wherein: SiO 22SiO in micropowder2≥99.5％。
The invention has the beneficial effects that a large amount of SiC is added, and the sintering resistance of the lining plate is improved by virtue of the advantages of non-oxide, difficult wetting and difficult sintering of SiC. Adding SiO2The micro powder can increase the toughness of the lining plate. Adding SiO2After being micronized, the nanometer SiC superfine powder has high activity and is matched with nanometer SiO with indefinite form2The superfine powder has high bonding strength in the sintering process, and the pores are sealed after the liquid phase is formed, so that the open porosity of the lining plate is reduced.
On the other hand, the invention also provides a processing flow of the anti-skinning nano lining plate for the cement kiln, which comprises the following steps:
the method comprises the following steps: stirring the anti-skinning nano lining board component for the cement kiln;
step two: pressing the stirred lining board components, wherein the pressure is not lower than 500 pa;
step three: placing the lining board components into a curing room for curing and drying;
step four: the components of the lining board are fired at the temperature of 1480-1550 ℃.
The invention has the advantages that the strength of the lining plate is improved through high-pressure pressing, maintenance and drying, and the lining plate has a stable structure through specific high-temperature firing.
In order to make the aforementioned and other objects, features and advantages of the invention more comprehensible, preferred embodiments accompanied with figures are described below.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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.
An anti-skinning nano lining plate for a cement kiln comprises the following components:
first SiC particles having a particle diameter of 3 to 5 mm: 6-25 wt%;
first SiC particles having a particle diameter of 1 to 3 mm: 28-40 wt%;
first SiC particles having a particle size of 0.088 mm to 1 mm: 14-25 wt%;
second SiC fine powder having a particle size of 200-: 15-28 wt%;
3-10 wt% of silicon nitride micro powder with the particle size of 2-5 microns;
3-10 wt% of first SiC micropowder with the granularity of 50-100 nm;
amorphous high-purity SiO with particle size of 50-100 nm2Ultra-fine powder: 1-5 wt%;
4-5 wt% of polyvinyl alcohol.
Wherein: in the first SiC, the content of SiC is more than or equal to 97 wt%, Fe2O3Less than or equal to 0.5 wt%; in the second SiC, the content of SiC is more than or equal to 98 wt%, and Fe2O3≤0.3wt％。
Wherein: the content of silicon nitride in the silicon nitride is more than or equal to 95 wt%.
The components are also added: zr0 with the grain size of 200-325 meshes20-5 wt% of fine powder.
Wherein: ZrO (ZrO)2ZrO in fine powder2≥99wt％。
Wherein: SiO 22SiO in micropowder2≥99.5％。
In conclusion, a large amount of SiC is added, and the sintering resistance of the lining plate is improved by the advantages of non-oxide SiC, difficult wetting and difficult sintering. Adding SiO2The micro powder can increase the toughness of the lining plate. Adding SiO2After being micronized, the nanometer SiC superfine powder has high activity and is matched with nanometer SiO with indefinite form2The superfine powder has high bonding strength in the sintering process, and can close pores after forming a liquid phase to reduce the content of the superfine powderOpen porosity of the liner.
The invention also provides a processing flow of the anti-skinning nano lining plate for the cement kiln, which comprises the following steps:
the method comprises the following steps: stirring the components of the anti-skinning nano lining plate for the cement kiln;
step two: pressing the stirred lining board components, wherein the pressure is not lower than 500 pa;
step three: placing the lining board components into a curing room for curing and drying;
step four: the components of the lining board are fired at the temperature of 1480-1550 ℃.
Example 1:
weighing all the components, mixing, adding polyvinyl alcohol accounting for 4.5% of the weight of dry materials in the mixing process, fully and uniformly mixing, pressing, forming, drying, curing for 5 days, and firing at 1500 ℃.
Example 2:
weighing all the components, mixing, adding polyvinyl alcohol accounting for 4.5% of the weight of dry materials in the mixing process, fully and uniformly mixing, pressing, forming, drying, curing for 5 days, and firing at 1500 ℃.
Example 3:
weighing all the components, mixing, adding polyvinyl alcohol accounting for 4.1% of the weight of dry materials in the mixing process, fully and uniformly mixing, pressing, forming, drying, curing for 5 days, and firing at 1500 ℃.
The performance indexes of the wear-resistant castable prepared according to the embodiment are shown in the following table:
wherein:
bulk density means the density after 24 hours at a temperature of 110 degrees celsius;
the normal-temperature compressive strength represents the compressive capacity of the lining plate at normal temperature;
the wear resistance represents the wear resistance of the wear-resistant castable.
Apparent porosity indicates the frequency of apparent pores of the lining plate;
the refractoriness under load represents the high-temperature softening temperature when the lining plate resists pressure;
the thermal shock stability refers to the ability of the refractory material to resist damage caused by rapid temperature change, and the thermal shock stability of the lining plate is tested by adopting high temperature of 1100 ℃ and water-cooled low temperature in the experiment.
Further, the lining plate of the invention has the following further advantages:
1. the service cycle can be improved from 12-18 months to more than 36 months;
2. the skinning thickness can be reduced from 10cm-15cm to 2 cm;
3. the frequency of cleaning the crust is reduced from once every 6 to 8 hours to once every 24 hours.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (6)
1. The anti-skinning nano lining plate for the cement kiln is characterized by comprising the following components:
first SiC particles having a particle diameter of 3 to 5 mm: 6-25 wt%;
first SiC particles having a particle diameter of 1 to 3 mm: 28-40 wt%;
first SiC particles having a particle size of 0.088 mm to 1 mm: 14-25 wt%;
second SiC fine powder having a particle size of 200-: 15-28 wt%;
3-10 wt% of silicon nitride micro powder with the particle size of 2-5 microns;
3-10 wt% of first SiC micropowder with the granularity of 50-100 nm;
amorphous high-purity SiO with particle size of 50-100 nm2Ultra-fine powder: 1-5 wt%;
4-5 wt% of polyvinyl alcohol.
2. The anti-skinning nano-scale liner composition for cement kilns as claimed in claim 1, wherein:
in the first SiC, the content of SiC is more than or equal to 97 wt%, Fe2O3≤0.5wt％；
In the second SiC, the content of SiC is more than or equal to 98 wt%, and Fe2O3≤0.3wt％。
3. The anti-skinning nano-scale liner composition for cement kilns as claimed in claim 2, wherein:
the content of silicon nitride in the silicon nitride is more than or equal to 95 wt%.
4. The anti-skinning nano-scale liner plate composition for cement kilns as claimed in claim 3, further comprising: zr0 with the grain size of 200-325 meshes20-5 wt% of fine powder.
Wherein: ZrO (ZrO)2ZrO in fine powder2≥99wt％。
5. Such asThe anti-skinning nano liner plate component for a cement kiln, according to claim 4, wherein: SiO 22SiO in micropowder2≥99.5％。
6. The processing flow of the anti-skinning nano lining plate for the cement kiln is characterized by comprising the following steps:
the method comprises the following steps: stirring the anti-skinning nano-scale lining board component for the cement kiln according to any one of claims 1 to 5;
step two: pressing the stirred lining board components, wherein the pressure is not lower than 500 pa;
step three: placing the lining board components into a curing room for curing and drying;
step four: the components of the lining board are fired at the temperature of 1480-1550 ℃.
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07330451A (en) * | 1994-06-10 | 1995-12-19 | Kurosaki Refract Co Ltd | Thermosetting monolithic refractory and executing method therefor |
| CN101100394A (en) * | 2006-07-07 | 2008-01-09 | 宜兴市泰科耐火材料有限公司 | Silicon carbide crusting resistant pouring material and preparation method thereof |
| CN101565316A (en) * | 2009-06-03 | 2009-10-28 | 重庆罗曼科技有限公司 | Preparation method of high-temperature abrasion proof ceramic wafer |
| CN102838364A (en) * | 2012-09-24 | 2012-12-26 | 通达耐火技术股份有限公司 | High-strength alkaline-resisting anti-skinning refractory castable |
| CN104119083A (en) * | 2014-05-29 | 2014-10-29 | 长兴盟友耐火材料有限公司 | Refractory brick for waste heat power generation tuyere of rotary kiln and preparation method of refractory brick |
| CN104311060A (en) * | 2014-10-09 | 2015-01-28 | 宁夏天纵泓光余热发电技术有限公司 | Anti-skinning refractory castable |
| CN104628396A (en) * | 2013-11-12 | 2015-05-20 | 宁夏天纵泓光余热发电技术有限公司 | Silicon carbide anti-skinning fireproof pouring material |
| CN104671805A (en) * | 2015-01-23 | 2015-06-03 | 湖州丰盛新材料有限公司 | Anti-skinning castable and preparation method thereof |
| CN105418086A (en) * | 2015-11-20 | 2016-03-23 | 中钢集团洛阳耐火材料研究院有限公司 | Silicon oxide bonded silicon carbide material |
| CN109111209A (en) * | 2018-07-27 | 2019-01-01 | 赞皇金隅水泥有限公司 | A kind of cement kiln micro crystal material |
| CN109809819A (en) * | 2018-12-24 | 2019-05-28 | 平顶山市腾博耐火材料有限公司 | A kind of silicon carbide push plate |
-
2020
- 2020-11-20 CN CN202011309070.7A patent/CN114516757A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07330451A (en) * | 1994-06-10 | 1995-12-19 | Kurosaki Refract Co Ltd | Thermosetting monolithic refractory and executing method therefor |
| CN101100394A (en) * | 2006-07-07 | 2008-01-09 | 宜兴市泰科耐火材料有限公司 | Silicon carbide crusting resistant pouring material and preparation method thereof |
| CN101565316A (en) * | 2009-06-03 | 2009-10-28 | 重庆罗曼科技有限公司 | Preparation method of high-temperature abrasion proof ceramic wafer |
| CN102838364A (en) * | 2012-09-24 | 2012-12-26 | 通达耐火技术股份有限公司 | High-strength alkaline-resisting anti-skinning refractory castable |
| CN104628396A (en) * | 2013-11-12 | 2015-05-20 | 宁夏天纵泓光余热发电技术有限公司 | Silicon carbide anti-skinning fireproof pouring material |
| CN104119083A (en) * | 2014-05-29 | 2014-10-29 | 长兴盟友耐火材料有限公司 | Refractory brick for waste heat power generation tuyere of rotary kiln and preparation method of refractory brick |
| CN104311060A (en) * | 2014-10-09 | 2015-01-28 | 宁夏天纵泓光余热发电技术有限公司 | Anti-skinning refractory castable |
| CN104671805A (en) * | 2015-01-23 | 2015-06-03 | 湖州丰盛新材料有限公司 | Anti-skinning castable and preparation method thereof |
| CN105418086A (en) * | 2015-11-20 | 2016-03-23 | 中钢集团洛阳耐火材料研究院有限公司 | Silicon oxide bonded silicon carbide material |
| CN109111209A (en) * | 2018-07-27 | 2019-01-01 | 赞皇金隅水泥有限公司 | A kind of cement kiln micro crystal material |
| CN109809819A (en) * | 2018-12-24 | 2019-05-28 | 平顶山市腾博耐火材料有限公司 | A kind of silicon carbide push plate |
Non-Patent Citations (1)
| Title |
|---|
| 王春杰等: "《纳米热障涂层材料》", 冶金工业出版社, pages: 123 * |
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