CN102276263B - Manufacturing method of seal cover for operation observation aperture on carbon calciner fire wall - Google Patents
Manufacturing method of seal cover for operation observation aperture on carbon calciner fire wall Download PDFInfo
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- CN102276263B CN102276263B CN 201110107613 CN201110107613A CN102276263B CN 102276263 B CN102276263 B CN 102276263B CN 201110107613 CN201110107613 CN 201110107613 CN 201110107613 A CN201110107613 A CN 201110107613A CN 102276263 B CN102276263 B CN 102276263B
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Abstract
The invention provides a manufacturing method of a seal cover for an operation observation aperture on a carbon calciner fire wall. Raw materials consist of three parts of aggregate, matrix and additive. The aggregate comprises three or more components selected from: granular mullite, high aluminium corundum, bauxite chamotte, flint clay and andalusite; the matrix comprises fine-powdered mullite, bauxite chamotte, andalusite or kyanite or sillimanite, alumina, high-alumina cement, silicon micro powder and high temperature heat resistant steel fiber; the additive is a mixture comprising two or more components selected from sodium tripolyphosphate, sodium hexametaphosphate, CMC, FDN and sodium lignosulfonate. The manufacturing method includes steps of: proportioning raw materials; mixing by a mixer; adding water with stirring; putting into a die; partitioning into blocks and moulding; carrying out natural maintenance; and drying at 110 DEG C-300 DEG C for 24-48h. The invention has beneficial effect that the seal cover produced by the method has excellent physical and chemical performance indexes, such as high high-temperature flexural strength, good thermal shock stability and refractoiness under load.
Description
Technical field
The present invention relates to a kind of making method of seal cover for operation observation aperture on carbon calciner fire wall, belong to the production technical field of the calcining carbon furnace body material of anode carbon block for electrolytic aluminum production.
Background technology
Carbon roasting furnace is mainly the equipment that roasting charcoal piece makes it to become electrolyzer anode carbon block used, the effect of stoving oven is with the various charcoal pieces after high-pressure molding in the situation that isolated air, maturing temperature in accordance with regulations carries out indirect heating, to improve physical strength, electroconductibility and the resistance to elevated temperatures of carbon product.The carbon baking furnace hopper is comprised of flue wall and cross wall, the flue wall top is comprised of polylith refractory material casting material prefabricated section, every casting preformed block has a central circular hole, and these holes are respectively used to the quirk operating mode observation that sprays into supply, temperature, pressure measurement, the condition of production of fume emission, combustion fuel etc.After the construction of baking furnace flame path wall top work surface refractory material casting material piece is complete, in central circular hole place's installation is namely to observe the handle hole sealing cover, sealing cover generally is divided into sealing cover pedestal and sealing cover chock plug, the sealing cover pedestal is placed on the observation handle hole of every flue wall working face, and then the energy-saving heat preserving sealing plug is placed in the interior circular hole of pedestal, the sealing thermal insulation effect is played in the contact of formation fitted seal.
Observation handle hole sealing cover of the prior art is general, and what adopt is that common Al-Si Refractory Materials is made, and exists generally that high temperature break resistant intensity is low, thermal shock resistance is bad, and the physical and chemical indexs such as refractoriness under load are general.
Summary of the invention
For defects, the present invention is in the making method that a kind of seal cover for operation observation aperture on carbon calciner fire wall is provided, the observation handle hole sealing cover high temperature break resistant intensity of use the method made is high, good thermal shock stability, and the physical and chemical indexs such as refractoriness under load are good.
To achieve these goals, technical scheme of the present invention is: a kind of making method of seal cover for operation observation aperture on carbon calciner fire wall, and its raw material is comprised of aggregate part, matrix part and admixture three parts;
A, described aggregate part, in its component, the parts by weight of each composition are as follows:
Mullite particle, 10~65,
The high alumina corundum in granules, 10~65,
The bauxite chamotte particle, 10~50,
The flint clay particle, 10~30,
The andaluzite particle, 5~10,
The material footpath of each composition of described aggregate part is 0~8mm, with wherein more than three kinds or three kinds component mix;
B, described matrix part, in its component, the parts by weight of each composition are as follows:
Mullite fine powder 180 orders, 5~10,
Bauxite chamotte fine powder 180 orders, 5~8,
Andaluzite or Lan Jingshi or sillimanite fine powder 180 orders, 3~10,
Aluminum oxide fine powder 300 orders, 3~8,
High-alumina cement fine powder 200 orders, 5~15,
Silicon powder, 3~6,
The high-temperature heat-resistance steel fiber, length 5~50mm, 0.5~2,
C, described admixture are two or more the mixture in tripoly phosphate sodium STPP, Sodium hexametaphosphate 99, CMC, FDN, sodium lignosulfonate; In its component, the parts by weight of each composition are as follows:
Tripoly phosphate sodium STPP, 0.1~0.3,
Sodium hexametaphosphate 99,0.1~0.3,
FDN, 0.1~0.3,
CMC, 0.1~0.3,
Sodium lignosulfonate, 0.1~0.3,
AL in a described mullite material and fine powder, high alumina corundum
2O
3Content be 55~70%; AL in described bauxite chamotte particle and fine powder, andaluzite fine powder, blue smart stone fine powder, sillimanite fine powder
2The content of O is 50~60%; AL in described flint clay particle
2O
3Content be 40~55%; AL in described andaluzite particle
2O
3Content be 50~65%; AL in aluminum oxide fine powder
2O
3〉=98%; High-alumina cement fine powder AL
2O
3〉=70%; SiO2 in silicon powder 〉=90%.
Described aggregate part, matrix part, admixture are prepared burden by above-mentioned parts by weight, after joining and mix in stirrer, stirs through adding water again compound after proportioning, mould material is joined in special mould, with the method for cast vibration or ramming, the piecemeal moulding by natural curing 10~24h after, can make after 110 ℃~300 ℃ oven dry 24~48h again.
The invention has the beneficial effects as follows: use the observation handle hole sealing cover high temperature break resistant intensity of this material made high, good thermal shock stability, the physical and chemical indexs such as refractoriness under load are good.
Embodiment
The present invention is described in further detail below in conjunction with specific embodiment.
Embodiment 1: the feed composition of choosing following parts by weight:
Mullite particle (AL
2O
355~70%), 65,
Bauxite chamotte particle (AL2O3 50~60%), 10,
Andaluzite particle (AL2O3 50~65%), 10,
Above-mentioned material particle diameter is all 0~8mm,
Mullite fine powder (AL
2O
355~70%), 10,
Bauxite chamotte fine powder (AL2O3 50~60%), 5,
Sillimanite fine powder (AL
2O
350~60%), 5,
Above-mentioned fine powder order number is all 180 orders,
Aluminum oxide powder (AL
2O
3〉=98%) 300 orders, 3,
High-alumina cement fine powder (AL
2O
3〉=70%) 200 orders, 5,
Silicon powder (SiO2 〉=90%) 300 orders, 4,
The high-temperature heat-resistance steel fiber (length 5~50mm), 2,
Tripoly phosphate sodium STPP, 0.1,
Sodium hexametaphosphate 99,0.15,
After preparing by weight, join and stir through adding water again after mixing in stirrer, mould material is joined in special mould, with the method for cast vibration or ramming, the piecemeal moulding by natural curing 10h after, make after 110 ℃ of oven dry 48h again.
Embodiment 2: the feed composition of choosing following parts by weight:
Mullite particle (AL
2O
355~70%), 10,
Flint clay particle (AL2O 350~60%), 30,
High alumina corundum in granules (AL2O3 50~65%), 65,
Above-mentioned material particle diameter is all 0~8mm,
Mullite fine powder (AL
2O
355~70%), 5,
Bauxite chamotte fine powder (AL2O3 50~60%), 8,
Kyanite fine powder (AL
2O
350~60%), 5,
Above-mentioned fine powder order number is all 180 orders,
Aluminum oxide powder (AL
2O
3〉=98%) 300 orders, 8,
High-alumina cement fine powder (AL
2O
3〉=70%) 200 orders, 10,
Silicon powder (SiO2 〉=90%) 300 orders, 5,
The high-temperature heat-resistance steel fiber (length 5~50mm), 1.5,
Tripoly phosphate sodium STPP, 0.2,
FDN, 0.15,
After preparing by weight, join in stirrer and stir through adding water again after mixing, join in stirrer and stir through adding water again after mixing, mould material is joined in special mould, with the method for cast vibration or ramming, the piecemeal moulding by natural curing 17h after, can make after 160 ℃ of oven dry 36h again.
Embodiment 3: the feed composition of choosing following parts by weight:
Mullite particle (AL
2O
355~70%), 25,
Bauxite chamotte particle (AL2O3 50~60%), 65,
Andaluzite particle (AL
2O
350~65%), 5,
Above-mentioned material particle diameter is all 0~8mm,
Mullite fine powder (AL
2O
355~70%), 7,
Bauxite chamotte fine powder (AL2O3 50~60%), 6,
Andaluzite fine powder (AL
2O
350~60%), 3,
Above-mentioned fine powder order number is all 180 orders,
Aluminum oxide fine powder (AL
2O
3〉=98%) 300 orders, 8,
High-alumina cement fine powder (AL
2O
3〉=70%) 200 orders, 12,
Silicon powder (SiO2 〉=90%) 300 orders, 6,
The high-temperature heat-resistance steel fiber (length 5~50mm), 1.5,
Tripoly phosphate sodium STPP, 0.2,
CMC, 0.1,
After preparing by weight, join in stirrer and stir through adding water again after mixing, join in stirrer and stir through adding water again after mixing, mould material is joined in special mould, with the method for cast vibration or ramming, the piecemeal moulding by natural curing 15h after, can make after 200 ℃ of oven dry 30h again.
Embodiment 4: the feed composition of choosing following parts by weight:
Mullite particle (AL
2O
355~70%), 45,
High alumina corundum in granules (AL2O3 50~65%), 10,
Flint clay particle (AL2O3 50~60%), 10,
Above-mentioned material particle diameter is all 0~8mm,
Mullite fine powder (AL
2O
355~70%), 8,
Bauxite chamotte fine powder (AL
2O
350~60%), 7,
Sillimanite fine powder (AL
2O
350~60%), 6,
Above-mentioned fine powder order number is all 180 orders,
Aluminum oxide fine powder (AL
2O
3〉=98%) 300 orders, 5,
High-alumina cement fine powder (AL
2O
3〉=70%) 200 orders, 12,
Silicon powder (SiO2 〉=90%), 3,
The high-temperature heat-resistance steel fiber (length 5~50mm), 1.2,
Tripoly phosphate sodium STPP, 0.3,
Sodium lignosulfonate, 0.1,
After preparing by weight, join in stirrer and stir through adding water again after mixing, join in stirrer and stir through adding water again after mixing, mould material is joined in special mould, with the method for cast vibration or ramming, the piecemeal moulding by natural curing 24h after, can make after 300 ℃ of oven dry 24h again.
Prepared carbon roasting furnace is observed physical and chemical index such as the following table of handle hole sealing cover
Protection scope of the present invention is not limited to the described scope of above-described embodiment, and every technology distortion of doing according to the technical solution of the present invention principle is within all falling into protection scope of the present invention.
Claims (1)
1. the making method of a seal cover for operation observation aperture on carbon calciner fire wall, its raw material is comprised of aggregate part, matrix part and admixture three parts; It is characterized in that:
A, described aggregate part, in its component, the parts by weight of each composition are as follows:
Mullite particle contains Al
2O
355~70%, 65,
The bauxite chamotte particle contains Al
2O
350~60%, 10,
The andaluzite particle contains Al
2O
350~65%, 10,
The particle diameter of described each composition of aggregate part is 0~8mm;
B, described matrix part, in its component, the parts by weight of each composition are as follows:
Mullite fine powder 180 orders contain Al
2O
355~70%, 10,
Bauxite chamotte fine powder 180 orders contain Al
2O
350~60%, 5,
Sillimanite fine powder 180 orders contain Al
2O
350~60%, 5
Aluminum oxide fine powder 300 orders contain Al
2O
3〉=98%, 3,
High-alumina cement fine powder 200 orders contain Al
2O
3〉=70% 5,
Silicon powder, 300 orders contain SiO
2〉=90% 4,
The high-temperature heat-resistance steel fiber, length 5~50mm, 2,
C, described admixture are the mixture of tripoly phosphate sodium STPP, Sodium hexametaphosphate 99; In its component, the parts by weight of each composition are as follows:
Tripoly phosphate sodium STPP, 0.1,
Sodium hexametaphosphate 99,0.15,
Described aggregate part, matrix part, admixture are prepared burden by above-mentioned parts by weight, after joining and mix in stirrer, stirs through adding water again compound after proportioning, mould material is joined in special mould, with the method for cast vibration or ramming, the piecemeal moulding by natural curing 10h after, can make after 110 ℃ of oven dry 48h again.
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CN102706160A (en) * | 2012-01-10 | 2012-10-03 | 河南安瑞高温材料股份有限公司 | Method for producing refractory material for carbon roasting furnace |
CN102976774B (en) * | 2012-11-26 | 2014-06-11 | 中国铝业股份有限公司 | Heat-insulating and sealing material for inert-anode aluminum electrolysis cell and preparation method thereof |
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CN104829247A (en) * | 2015-04-10 | 2015-08-12 | 浙江锦诚耐火材料有限公司 | Acid resistant prefabricated component for carbonization furnace |
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CN105546991A (en) * | 2016-01-29 | 2016-05-04 | 索通发展股份有限公司 | Energy-saving fire hole cover for opening type ring type roasting furnace and manufacturing method of energy-saving fire hole cover |
CN107759212A (en) * | 2017-11-01 | 2018-03-06 | 安徽马钢耐火材料有限公司 | A kind of middle clad mullite castable and its production method |
CN109369160B (en) * | 2018-12-04 | 2021-08-13 | 钢城集团凉山瑞海实业有限公司 | Pouring material for tundish cover |
CN111592333A (en) * | 2020-05-25 | 2020-08-28 | 郑州东豫新材料科技有限公司 | Large special-shaped refractory material with rapid solidification, high thermal shock and low creep and preparation method thereof |
CN111533569A (en) * | 2020-05-27 | 2020-08-14 | 郑州东豫新材料科技有限公司 | High-thermal-shock low-creep special-shaped refractory material and preparation method thereof |
CN111732423B (en) * | 2020-05-29 | 2023-04-18 | 郑州安耐克实业有限公司 | Castable for lower orifice of hot blast stove and construction method thereof |
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CN1102823A (en) * | 1994-10-24 | 1995-05-24 | 宜兴市特种温耐磨材料厂 | Wearing-proof refractory material |
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