CN108558421A - Waste incinerator castable refractory and its method prepared by discarded high tension insulator - Google Patents
Waste incinerator castable refractory and its method prepared by discarded high tension insulator Download PDFInfo
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- CN108558421A CN108558421A CN201810591996.6A CN201810591996A CN108558421A CN 108558421 A CN108558421 A CN 108558421A CN 201810591996 A CN201810591996 A CN 201810591996A CN 108558421 A CN108558421 A CN 108558421A
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- Prior art keywords
- high tension
- tension insulator
- waste incinerator
- castable refractory
- fine powder
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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
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
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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
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
-
- 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
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
Abstract
The present invention specifically relates to waste incinerator castable refractory and its method prepared by discarded high tension insulator, first using the bonding agent of the high tension insulator aggregate of 60.0 ~ 75.0 wt%, the high tension insulator fine powder of 10.0 ~ 16.0 wt%, the alundum fine powder of 5.0 ~ 8.0 wt%, the zircon fine powder of 2.0 ~ 5.0 wt% and 3.0 ~ 6.0 wt% as raw material, the water of the additional 4.0 ~ 7.0wt% of raw material again, mixing, stir 2 ~ 3min, moulding by casting；Then dry 8 ~ 16h under the conditions of 100 ~ 120 DEG C keeps the temperature 2 ~ 5h to get waste incinerator castable refractory under the conditions of 1300 ~ 1450 DEG C.The present invention have the characteristics that it is simple for process, economize on resources with environmental-friendly, obtained waste incinerator castable refractory wearing coefficient height, high mechanical strength, volume stability are good, excellent corrosion resistance and thermal coefficient are relatively low.
Description
Technical field
The invention belongs to the technical fields of unshape refractory, and in particular to waste incineration prepared by discarded high tension insulator
Stove castable refractory and its method.
Background technology
High tension insulator material is generally applied in high voltage power transmission and transforming circuit, is subjected to the shadow of high pressure and external environment for a long time
It rings, has the characteristics that height endurability and high mechanical properties.Since high tension insulator material generates in molding, drying and sintering process
Ferrotitanium content is exceeded in crackle or porcelain will cause porcelain billet dielectric properties not up to standard, and then be eliminated as high-voltage electric porcelain waste material；Or
In use environment, being subjected to high-tension current and rugged environment for a long time influences, and cracks and causes electric breakdown phenomena, can also be washed in a pan
It eliminates as high-voltage electric porcelain waste material.The post-processing present situation of the solid waste of China's ceramic industry at present is very undesirable, for high tension insulator
The processing majority of waste material uses landfill method, not only occupies a large amount of soils, also polluted soil, water body, air of surrounding etc., right
Ecological environment causes serious harm.By high-voltage electric porcelain waste material recycling, with Green Design Technology to high-voltage electric porcelain waste material
Life cycle carries out design and arrangement again, it is desirable that it meets environmental protection requirement, harmless to ecological environment, resource and the energy
Most effectively consumed configuration.
As scientific and technological progress and city size expand, house refuse discharge capacity cumulative year after year, traditional landfill, compost and again
It makes profits and uses processing mode, although innoxious, recycling and the target of minimizing may be implemented, from the amount energy of processing rubbish
See cannot still far meet the needs of social development, incineration treatment of garbage mode is handled with its hundreds of ton even day of thousands of tons of
Ability and for generating electricity, the comprehensive utilization advantage of heat supply in western developed country extensive use, in numerous development
Country is with undeveloped country because its significant economic benefit and far-reaching social benefit equally have wide promotion prospect.
There are many waste incineration modes, in the fairly perfect city of some external refuse disposal systems, at 70% rubbish
Reason system is using the bigger grate formula waste incinerator of processing capacity.The furnace lining working lining of waste incinerator uses high-strength
It spends, the Low Cement Castable that the chemical corrosion of flame resistant exhaust gas is good, SiC refractory material is usually used in due to its good performance
In domestic waste incineration, but SiC product thermal conductivitys are higher, and heat is made to be lost by brick wall；Moreover, cooling silicon carbide lining
A large amount of auxiliary air is needed, this increase that exhaust gas can be caused lost.Waste incinerator fire resisting based on discarded high tension insulator
Castable is Al2O3-SiO2-ZrO2Matter gravity flow Low Cement Castable makes discarded high tension insulator in house refuse using one side
It is made full use of in incinerator castable refractory, realizes " treatment of wastes with processes of wastes against one another ", on the other hand greatly simplify complex-shaped portion in incinerator
The work progress of position, and the anchoring piece of reactor can also be protected to be protected from erosion, extend its service life.
A kind of " refractory material of waste incinerator " (CN200610013426.6) patented technology, discloses with 35 ~ 50
Wt% refractory aggregates, 20 ~ 35 wt% alumina powders and 2 ~ 12 wt% alumina silicate superfine powders are raw material, and additional 0.1 ~ 1.0wt% is multiple
Manufactured waste incinerator castable refractory after conjunction organic bond grinding.The defect of this method is mainly reflected in：(1) party
The cost of material of method is higher；(2) composite water-reducing agent complex process, application property be not strong；(3) the dispensing time is long.
" waste incinerator fire resisting acid and alkali resistant pouring material " (CN201310434527.0) patented technology, discloses with 60
The chrome green that the low iron fused mullite of ~ 70wt% does aggregate, the boron carbide of 5 ~ 10wt% and 5 ~ 8wt% does powder, outer plus-minus
Aqua, retarder and anti-knock agent add water to be mixed and castable are made.The defect of this method is mainly reflected in：(1) this method
Cost of material is higher；(2) Cr under high-temperature condition2O3Easily it is transformed into harmful Cr VI, should avoids using chromate-containing materials；(3) it makes
Standby complex procedures, production cycle are long.
Invention content
The present invention is directed to overcome prior art defect, it is therefore an objective to provide it is a kind of it is simple for process, economize on resources with it is environmental-friendly
Utilization discard the high tension insulator method for preparing waste incinerator castable refractory；Have with the castable refractory prepared by the method
There is the features such as high abrasion, high intensity, anticorrosive, good thermal shock, relatively low thermal coefficient.
To achieve the above object, the technical solution adopted in the present invention is：
Waste incinerator castable refractory prepared by discarded high tension insulator, including following raw materials, each raw material are according to following
Parts by weight combine：
First with the high tension insulator aggregate of 60.0 ~ 75.0 wt%, the high tension insulator fine powder of 10.0 ~ 16.0 wt%, 5.0 ~ 8.0 wt%
The bonding agent of alundum fine powder, the zircon fine powder of 2.0 ~ 5.0 wt% and 3.0 ~ 6.0 wt% is raw material, raw material total 100
wt%；2 ~ 3min, moulding by casting are stirred in the water of the additional 4.0 ~ 7.0wt% of raw material again, mixing；Then in 100 ~ 120 DEG C of conditions
8 ~ 16h of lower drying keeps the temperature 2 ~ 5h to get waste incinerator castable refractory under the conditions of 1300 ~ 1450 DEG C.
The high tension insulator aggregate and high tension insulator fine powder are obtained by discarded high tension insulator is broken, high tension insulator aggregate
Grain grain size be：7 ~ 5 mm, 5 ~ 4 mm, 4 ~ 3 mm, 3 ~ 2 mm, 2 ~ 1 mm and 1 ~ 0.5 mm, the mass fractions relative of 6 kinds of aggregates
Ratio be 3:2:1:2:1:1；The grain size of high tension insulator fine powder is respectively less than 0.074mm；The primary chemical of discarded high tension insulator at
Dividing is：Al2O3Content >=55.0wt%, SiO2Content >=38.0wt%, K2O content >=3.0wt%, Na2O content >=0.3wt%.
The grain size of the alundum fine powder is respectively less than 0.088mm, and the main chemical compositions of alundum fine powder are：Al2O3
Content >=98.0wt%, Na2O content≤0.8wt%.
The grain size of the zircon is respectively less than 0.074mm, and the main chemical compositions of zircon are：ZrO2Content >=
63.0wt%, SiO2Content >=31.0wt%.
The bonding agent is one or more in aluminate cement, portland cement, Ludox and Aluminum sol.
Due to the adoption of the above technical scheme, it the current bulk deposition of the raw materials used in the present invention and is not fully used
Discarded high tension insulator, turns waste into wealth, not only slows down environmental pressure and also a save the expense for handling a large amount of high-voltage electric porcelain waste materials；It is useless
Impurity component in gurry reduces the decomposition temperature of zircon, and liquid phase sticks under the zirconium ion raising high temperature diffused in liquid phase
Degree, enhances the erosion-resisting characteristics of furnace lining material；The infrared shadowing effect of zircon reduces the high temperature heat transfer of furnace lining material,
The thermal efficiency for improving waste incinerator, reduces energy consumption.Obtained waste incinerator is close with castable refractory volume
Degree is 2.35 ~ 2.50 g/cm3, apparent porosity is 9.0 ~ 12.0%, reheating linear change rate on reheating ± 0.5%, cold crushing strength >=
95MPa；Strength at normal temperature is >=20MPa.
The present invention have the characteristics that it is simple for process, economize on resources and environmental-friendly, obtained waste incinerator fire resisting
Castable compressive resistance height, good thermal shock stability, temperature in use are high, resistance to chemical corrosion is good, service life is long.
Specific implementation mode
The present invention will be further described With reference to embodiment, not to the limit of the scope of the present invention
System.
It is first that the related technical parameter Unify legislation involved by present embodiment is as follows to avoid repeating：
The high tension insulator aggregate and high tension insulator fine powder are obtained by discarded high tension insulator is broken, high tension insulator particles of aggregates
Grain size is：7 ~ 5 mm, 5 ~ 4 mm, 4 ~ 3 mm, 3 ~ 2 mm, 2 ~ 1 mm and 1 ~ 0.5 mm, the ratio of the mass fractions relative of 6 groups of aggregates
Value is 3:2:1:2:1:1；The grain size of high tension insulator fine powder is respectively less than 0.074mm；Discarding the main chemical compositions of high tension insulator is：
Al2O3Content >=55.0wt%, SiO2Content >=38.0wt%, K2O content >=3.0wt%, Na2O content >=0.3wt%.The sintering
The grain size of corundum fine powder is respectively less than 0.088mm, and the main chemical compositions of alundum fine powder are：Al2O3Content >=98.0wt%,
Na2O content≤0.8wt%.
The grain size of the zircon is respectively less than 0.074mm, and the main chemical compositions of zircon are：ZrO2Content >=
63.0wt%, SiO2Content >=31.0wt%.
The bonding agent is one or both of aluminate cement, portland cement, Ludox and Aluminum sol.
It is repeated no more in embodiment.
Embodiment 1
Waste incinerator castable refractory prepared by discarded high tension insulator, including following raw materials, each raw material are according to following
Mass fraction combines：
First with the high tension insulator aggregate of 60.0 wt%, the high tension insulator fine powder of 14.0wt%, 7.0 wt% alundum fine powder,
The zircon fine powder of 4.0wt% and the Aluminum sol and aluminate cement of 5.0wt% are raw material, then the additional raw material 4.0wt%
2 ~ 3min, moulding by casting are stirred in water, mixing；Then dry 8 ~ 16h under the conditions of 100 ~ 120 DEG C, in 1300 ~ 1350 DEG C of conditions
2 ~ 3h is to get waste incinerator castable refractory for lower heat preservation.
By the waste incinerator prepared by the present embodiment with castable refractory after testing：Bulk density is 2.35 ~ 2.40g/
cm3；Apparent porosity is 11.0 ~ 12.0%；Cold crushing strength >=95MPa；Strength at normal temperature is >=20MPa.
Embodiment 2
A kind of waste incinerator castable refractory prepared by discarded high tension insulator, including following raw materials, each raw material according to
Following mass fraction combination：
First with the high tension insulator aggregate of 65.0 wt%, the high tension insulator fine powder of 12.0 wt%, 6.0 wt% alundum fine powder,
The zircon fine powder of 3.0wt% and the portland cement and Ludox of 4.0wt% are raw material, then the additional raw material 5.0wt%
2 ~ 3min, moulding by casting are stirred in water, mixing；Then dry 8 ~ 16h under the conditions of 100 ~ 120 DEG C, in 1350 ~ 1400 DEG C of conditions
3 ~ 4h is to get waste incinerator castable refractory for lower heat preservation.
By the waste incinerator prepared by the present embodiment with castable refractory after testing：Bulk density is 2.40 ~ 2.45g/
cm3；Apparent porosity is 10.0 ~ 11.0%；Cold crushing strength >=95MPa；Strength at normal temperature is >=20MPa.
Embodiment 3
A kind of waste incinerator castable refractory prepared by discarded high tension insulator, including following raw materials, each raw material according to
Following mass fraction combination：
First with the high tension insulator aggregate of 75.0 wt%, the high tension insulator fine powder of 10.0 wt%, 5.0 wt% alundum fine powder,
The zircon fine powder of 2.0wt% and the bonding agent of 3.0wt% are raw material, then the water of the additional raw material 6.0wt%, are mixed, stirring 2 ~
3min, moulding by casting；Then dry 8 ~ 16h under the conditions of 100 ~ 120 DEG C, kept the temperature under the conditions of 1400 ~ 1450 DEG C 4 ~ 5h to get
Waste incinerator castable refractory.
By the waste incinerator prepared by the present embodiment with castable refractory after testing：Bulk density is 2.45 ~ 2.50g/
cm3；Apparent porosity is 9.0 ~ 10.0%；Cold crushing strength >=95MPa；Strength at normal temperature is >=20MPa.
The raw materials used discarded high tension insulator for being current bulk deposition and not being fully used of present embodiment,
Turn waste into wealth, not only slows down the expense that environmental pressure also as save a large amount of discarded high tension insulators of processing；Simple production process is poured
Injection forming is burnt into after dry and can be obtained waste incinerator castable refractory；Obtained waste incinerator refractory casting
Material bulk density is 2.35 ~ 2.50 g/cm3, apparent porosity is 9.0 ~ 12.0%, reheating linear change rate on reheating ± 0.5%, the resistance to pressure of room temperature
Degree >=95MPa；Strength at normal temperature is >=20MPa.
The present invention have the characteristics that it is simple for process, economize on resources and prepared by environmental-friendly, obtained discarded high tension insulator
Waste incinerator castable refractory compressive resistance height, good thermal shock stability, temperature in use is high, resistance to chemical corrosion is good, makes
Use long lifespan.
Claims (6)
1. waste incinerator castable refractory prepared by discarded high tension insulator, which is characterized in that it is made of following raw material,
The alundum of the high tension insulator aggregate of 60.0 ~ 75.0 wt%, the high tension insulator fine powder of 10.0 ~ 16.0 wt%, 5.0 ~ 8.0 wt%
Fine powder, 2.0 ~ 5.0 wt% zircon fine powder and 3.0 ~ 6.0 wt% bonding agent, raw material adds up to 100 wt%；The additional original
Expect the water of 4.0 ~ 7.0wt%.
2. waste incinerator castable refractory prepared by discarded high tension insulator according to claim 1, which is characterized in that
The high tension insulator aggregate and high tension insulator fine powder is obtained by discarded high tension insulator is broken, the high tension insulator aggregate its
Grain size is following 6 kinds：7 ~ 5 mm, 5 ~ 4 mm, 4 ~ 3 mm, 3 ~ 2 mm, 2 ~ 1 mm and 1 ~ 0.5 mm, the relative mass of 6 kinds of aggregates
The ratio of score is 3:2:1:2:1:1；The grain size of the high tension insulator fine powder is respectively less than 0.074mm；Discarded high tension insulator
Main chemical compositions are：Al2O3Content >=55.0wt%, SiO2Content >=38.0wt%, K2O content >=3.0wt%, Na2O content >=
0.3wt%。
3. waste incinerator castable refractory prepared by discarded high tension insulator according to claim 1, which is characterized in that
The grain size of the alundum fine powder is respectively less than 0.088mm, and the main chemical compositions of alundum fine powder are：Al2O3Content >=
98.0wt%, Na2O content≤0.8wt%.
4. waste incinerator castable refractory prepared by discarded high tension insulator according to claim 1, which is characterized in that
The grain size of the zircon is respectively less than 0.074mm, and the main chemical compositions of zircon are：ZrO2Content >=63.0wt%, SiO2Contain
Amount >=31.0wt%.
5. waste incinerator castable refractory prepared by discarded high tension insulator according to claim 1, which is characterized in that
The bonding agent is one or more mixtures in aluminate cement, portland cement, Ludox and Aluminum sol.
6. according to the method for waste incinerator castable refractory prepared by the discarded high tension insulator described in claim 1 to 5,
It is characterized in that, is that raw material and water mix, stirs 2 ~ 3min, moulding by casting；Then dry 8 ~ 16h under the conditions of 100 ~ 120 DEG C,
2 ~ 5h is kept the temperature under the conditions of 1300 ~ 1450 DEG C to get waste incinerator castable refractory.
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| CN201810591996.6A CN108558421A (en) | 2018-06-11 | 2018-06-11 | Waste incinerator castable refractory and its method prepared by discarded high tension insulator |
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| CN201810591996.6A CN108558421A (en) | 2018-06-11 | 2018-06-11 | Waste incinerator castable refractory and its method prepared by discarded high tension insulator |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109305820A (en) * | 2018-12-20 | 2019-02-05 | 无锡远能耐火材料有限公司 | High-strength abrasion-proof castable refractory and preparation method thereof |
| CN110436946A (en) * | 2019-08-15 | 2019-11-12 | 中冶武汉冶金建筑研究院有限公司 | A kind of acidproof spray paint for hot-blast stove vault high temperature position |
| CN111018506A (en) * | 2019-11-28 | 2020-04-17 | 浙江锦诚新材料股份有限公司 | Anti-skinning spray coating for cement kiln preheater |
| CN111138204A (en) * | 2019-12-27 | 2020-05-12 | 江苏国窑科技有限公司 | Acid-resistant quench tower pouring material, preparation method thereof and quench tower |
| CN111423242A (en) * | 2020-04-22 | 2020-07-17 | 河南省宏达炉业有限公司 | Anti-stripping high-thermal-shock-resistance castable |
| CN112045147A (en) * | 2020-09-16 | 2020-12-08 | 王成富 | Surface coating for inner surface of sand mold of high-temperature alloy mold casting and using method |
| CN112794703A (en) * | 2021-02-20 | 2021-05-14 | 中冶武汉冶金建筑研究院有限公司 | High-aluminum self-flow castable and preparation method thereof |
| CN113666720A (en) * | 2021-07-26 | 2021-11-19 | 中国铝业股份有限公司 | Furnace cover of continuous ultra-high temperature furnace and castable thereof |
| CN115433015A (en) * | 2022-08-24 | 2022-12-06 | 上海宝九和耐火材料有限公司 | Refractory castable for hazardous waste incinerator and preparation method thereof |
| CN116003144A (en) * | 2022-12-22 | 2023-04-25 | 阳泉金隅通达高温材料有限公司 | Low-expansion refractory castable for induction heating furnace prepared from high-voltage electric porcelain reclaimed materials |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109305820A (en) * | 2018-12-20 | 2019-02-05 | 无锡远能耐火材料有限公司 | High-strength abrasion-proof castable refractory and preparation method thereof |
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| CN110436946A (en) * | 2019-08-15 | 2019-11-12 | 中冶武汉冶金建筑研究院有限公司 | A kind of acidproof spray paint for hot-blast stove vault high temperature position |
| CN111018506A (en) * | 2019-11-28 | 2020-04-17 | 浙江锦诚新材料股份有限公司 | Anti-skinning spray coating for cement kiln preheater |
| CN111138204A (en) * | 2019-12-27 | 2020-05-12 | 江苏国窑科技有限公司 | Acid-resistant quench tower pouring material, preparation method thereof and quench tower |
| CN111423242A (en) * | 2020-04-22 | 2020-07-17 | 河南省宏达炉业有限公司 | Anti-stripping high-thermal-shock-resistance castable |
| CN112045147A (en) * | 2020-09-16 | 2020-12-08 | 王成富 | Surface coating for inner surface of sand mold of high-temperature alloy mold casting and using method |
| CN112794703A (en) * | 2021-02-20 | 2021-05-14 | 中冶武汉冶金建筑研究院有限公司 | High-aluminum self-flow castable and preparation method thereof |
| CN113666720A (en) * | 2021-07-26 | 2021-11-19 | 中国铝业股份有限公司 | Furnace cover of continuous ultra-high temperature furnace and castable thereof |
| CN113666720B (en) * | 2021-07-26 | 2023-11-28 | 中国铝业股份有限公司 | Continuous ultra-high temperature furnace cover and castable thereof |
| CN115433015A (en) * | 2022-08-24 | 2022-12-06 | 上海宝九和耐火材料有限公司 | Refractory castable for hazardous waste incinerator and preparation method thereof |
| CN115433015B (en) * | 2022-08-24 | 2023-09-08 | 上海宝九和耐火材料有限公司 | Refractory castable for hazardous waste incinerator and preparation method thereof |
| CN116003144A (en) * | 2022-12-22 | 2023-04-25 | 阳泉金隅通达高温材料有限公司 | Low-expansion refractory castable for induction heating furnace prepared from high-voltage electric porcelain reclaimed materials |
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