CN101293778B - Pouring material for air guide wall for vertical furnace and prefabricated component - Google Patents
Pouring material for air guide wall for vertical furnace and prefabricated component Download PDFInfo
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- CN101293778B CN101293778B CN2008100501423A CN200810050142A CN101293778B CN 101293778 B CN101293778 B CN 101293778B CN 2008100501423 A CN2008100501423 A CN 2008100501423A CN 200810050142 A CN200810050142 A CN 200810050142A CN 101293778 B CN101293778 B CN 101293778B
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- alumine
- mullite
- air guide
- guide wall
- mould material
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Abstract
The invention discloses a casting material for the blast air guide wall of a shaft furnace and a prefabricated product thereof. The casting material contains 0.044-8 mm high-aluminum bauxite 60-84%, 0.044-8mm mullite 5-15%, cement 2-10%, silicon dioxide ultrafine powder 3-8%, sodium polyphosphate 0.01-1%, and zircon 5-12%. The prefabricated product is prepared by picking up the materials; crushing; mixing; adding water into the mixture and stirring; injecting into a mold; shake molding; baking; and calcining. The prepared casting material can effectively prolong the service life of the blast air guide wall of the shaft furnace. The service life of the blast air guide wall prepared from the casting material at least reaches two years so as to satisfy the requirement for industrial production. The prefabricated product has good high temperature performance, high abrasion resistance and long service life.
Description
One, technical field: the present invention relates to a kind of mould material, particularly relate to a kind of Al that is used for air guide wall for vetical furnace
2O
3-ZrO
2Mould material and utilize this mould material to prepare the method for prefabricated component.
Two, background technology:
At present, air-guiding wall in the shaft furnace mostly is to adopt the mould material of hanging down cement or non-cement to build by laying bricks or stones to form, and the air-guiding wall that adopts low cement, non-cement mould material to build by laying bricks or stones is carrying out in the roasting use with shaft furnace, the work-ing life of shaft furnace is shorter, is generally for 6～October duration of service.Because the work-ing life of shaft furnace is lower, is difficult to satisfy the demand of producing, and influences the quality of pelletizing.
Shaft furnace is shorter work-ing life, from tearing the stove situation open, the work-ing life that mainly is air-guiding wall is shorter, in order to improve the work-ing life of air-guiding wall in the shaft furnace, thereby improve the work-ing life of shaft furnace, satisfy the demand of suitability for industrialized production, development research of the present invention a kind of novel being mainly used in improve the mould material in work-ing life of air-guiding wall in the shaft furnace.
Three, content of the present invention:
The present invention provides a kind of and is the mould material that is used for air guide wall for vetical furnace of main raw material and utilizes this mould material to prepare the method for prefabricated component with mullite, alumine and zircon sand on the basis of the existing used mould material of air guide wall for vetical furnace.
Technical scheme of the present invention is:
The invention provides a kind of mould material that is used for air guide wall for vetical furnace, with the weight percentage is unit, described mould material is by raw material 0.044～8mm alumine 60～84%, 0.044～8mm mullite 5～15%, cement 2～10%, silicon-dioxide ultrafine powder 3～8%, polyphosphoric acid sodium salt 0.01～1% and zirconium English yarn 5～12% are formed.
For the mould material that is used for air guide wall for vetical furnace recited above, the content of aluminum oxide＞80% in the described alumine; Wherein 8～5mm alumine is 15～20%, and 5～3mm alumine is 15～20%, and 3～1mm alumine is 15～20%, and 1～0.044mm alumine is 15～24%.
For the mould material that is used for air guide wall for vetical furnace recited above, 5～3mm mullite is 1～5% in described 0.044～8mm mullite, and the 0.044mm mullite is 4～10%.
For the mould material that is used for air guide wall for vetical furnace recited above, described cement is pure calcium aluminate cement CA-70.
For the mould material that is used for air guide wall for vetical furnace recited above, the fineness of described silicon-dioxide≤0.02 μ m.
For the mould material that is used for air guide wall for vetical furnace recited above, described polyphosphoric acid sodium salt is tripoly phosphate sodium STPP or Sodium hexametaphosphate 99.
A kind of method of utilizing mould material recited above to prepare prefabricated component, its preparation method is: the weight percentage proportioning by above-mentioned mould material takes by weighing various raw materials, choose, after the selection material is carried out fragmentation, the granularity of broken back material is 8～5mm, or 5～3mm, or 3-1mm, or 1～0.044mm, in mixture, add entry then, the ratio of water and the two add-on of mixture is 6: 100, stirs, and mould is injected in the back that stirs, vibrating forming, toast then, insulation was 16～24 hours when storing temperature reached 25 ℃, and insulation is 24～48 hours in the time of 200 ℃, calcine at last, calcining temperature is 1300～1400 ℃, and calcination time is 15～16 hours, promptly gets the product prefabricated component after the calcining.
Positive beneficial effect of the present invention:
1, the present invention is a main raw material with zirconium English yarn, mullite and alumine on the basis of low, non-cement mould material prior art, adopts to optimize the particle proportioning, optimize matrix, provides a kind of and can effectively improve the air guide wall for vetical furnace mould material in work-ing life; The air guide wall for vetical furnace that utilizes mould material of the present invention to build by laying bricks or stones was at least 2 years the work-ing life of its air-guiding wall, and from tearing the stove situation open, its air-guiding wall still can continue to use, and the reason of replacing is that the water beam damages.
2, utilize mould material of the present invention to build air-guiding wall in the shaft furnace by laying bricks or stones, can effectively improve the work-ing life of whole shaft furnace, making work-ing life of its whole shaft furnace minimum is 2 years, satisfies need of industrial production.
3, the prefabricated component high-temperature behavior that adopts mould material of the present invention to produce is good, wear resisting property is high, long service life; The soft value of the lotus of mould material of the present invention can reach more than 1520, and the soft value of lotus of general mould material is 1380.
Four, embodiment:
Following examples only in order to further specify the present invention, do not limit content of the present invention.
Embodiment one: a kind of mould material and prefabricated component thereof that is used for air guide wall for vetical furnace
With the weight percentage is unit, and mould material is by raw material 0.044～8mm alumine 60%, 0.044～8mm mullite 15%, cement 7%, and silicon-dioxide ultrafine powder 5%, tripoly phosphate sodium STPP 1% and zirconium English yarn 12% are formed.
The content of aluminum oxide＞80% in the alumine wherein, wherein 8～5mm alumine is that 15%, 5～3mm alumine is that 15%, 3～1mm alumine is that 15%, 1～0.044mm alumine is 15%; 5～3mm mullite is 5% in the mullite, and the 0.044mm mullite is 10%; The fineness of silicon-dioxide ultrafine powder≤0.02 μ m.
A kind ofly utilize top described mould material to prepare the method for prefabricated component: the various raw materials in the above-mentioned mould material are chosen, after the selection material is carried out fragmentation, the granularity of broken back material is 8～5mm, in mixture, add entry then, the ratio of water and the two add-on of mixture is 6: 100, stir, inject mould after stirring, vibrating forming toasts then, insulation was 16 hours when storing temperature reached 25 ℃, insulation is 24 hours in the time of 200 ℃, calcines at last, and calcining temperature is 1350 ℃, calcination time is 16 hours, promptly gets the product prefabricated component after the calcining.
Embodiment two: a kind of mould material and prefabricated component thereof that is used for air guide wall for vetical furnace, no longer to narrate with embodiment one something in common, and difference is:
Mould material is by raw material 0.044～8mm alumine 64%, 0.044～8mm mullite 10%, cement (pure calcium aluminate cement CA-70) 10%, and silicon-dioxide ultrafine powder 8%, tripoly phosphate sodium STPP 0.5% and zirconium English yarn 7.5% are formed.
8～5mm alumine is that 15%, 5～3mm alumine is that 15%, 3～1mm alumine is that 16%, 1～0.044mm alumine is 18% in the alumine; 5～3mm mullite is 3% in the mullite, and the 0.044mm mullite is 7%.
A kind ofly utilize top described mould material to prepare the method for prefabricated component: the various raw materials in the above-mentioned mould material are chosen, after the selection material is carried out fragmentation, the granularity of broken back material is 5～3mm, in mixture, add entry then, the ratio of water and the two add-on of mixture is 6: 100, stir, inject mould after stirring, vibrating forming toasts then, insulation was 18 hours when storing temperature reached 25 ℃, insulation is 26 hours in the time of 200 ℃, calcines at last, and calcining temperature is 1300 ℃, calcination time is 16 hours, promptly gets the product prefabricated component after the calcining.
Embodiment three: a kind of mould material and prefabricated component thereof that is used for air guide wall for vetical furnace, no longer to narrate with embodiment one something in common, and difference is:
Mould material is by raw material 0.044～8mm alumine 68%, 0.044～8mm mullite 12%, cement (pure calcium aluminate cement CA-70) 5%, and silicon-dioxide ultrafine powder 6%, tripoly phosphate sodium STPP 0.8% and zirconium English yarn 8.2% are formed.
8～5mm alumine is that 17%, 5～3mm alumine is that 17%, 3～1mm alumine is that 16%, 1～0.044mm alumine is 18% in the alumine; 5～3mm mullite is 4% in the mullite, and the 0.044mm mullite is 8%.
A kind ofly utilize top described mould material to prepare the method for prefabricated component: the various raw materials in the above-mentioned mould material are chosen, after the selection material is carried out fragmentation, the granularity of broken back material is 3～1mm, in mixture, add entry then, the ratio of water and the two add-on of mixture is 6: 100, stir, inject mould after stirring, vibrating forming toasts then, insulation was 20 hours when storing temperature reached 25 ℃, insulation is 28 hours in the time of 200 ℃, calcines at last, and calcining temperature is 1400 ℃, calcination time is 15 hours, promptly gets the product prefabricated component after the calcining.
Embodiment four: a kind of mould material and prefabricated component thereof that is used for air guide wall for vetical furnace, no longer to narrate with embodiment one something in common, and difference is:
Mould material is by raw material 0.044～8mm alumine 70%, 0.044～8mm mullite 8%, cement (pure calcium aluminate cement CA-70) 8%, and silicon-dioxide ultrafine powder 3.99%, Sodium hexametaphosphate 99 0.01% and zirconium English yarn 10% are formed.
8～5mm alumine is that 17%, 5～3mm alumine is that 17%, 3～1mm alumine is that 16%, 1～0.044mm alumine is 20% in the alumine; 5～3mm mullite is 4% in the mullite, and the 0.044mm mullite is 4%.
A kind ofly utilize top described mould material to prepare the method for prefabricated component: the various raw materials in the above-mentioned mould material are chosen, after the selection material is carried out fragmentation, the granularity of broken back material is 1～0.044mm, in mixture, add entry then, the ratio of water and the two add-on of mixture is 6: 100, stir, inject mould after stirring, vibrating forming toasts then, insulation was 22 hours when storing temperature reached 25 ℃, insulation is 32 hours in the time of 200 ℃, calcines at last, and calcining temperature is 1320 ℃, calcination time is 16 hours, promptly gets the product prefabricated component after the calcining.
Embodiment five: a kind of mould material and prefabricated component thereof that is used for air guide wall for vetical furnace, no longer to narrate with embodiment one something in common, and difference is:
Mould material is by raw material 0.044～8mm alumine 75%, 0.044～8mm mullite 7%, cement (pure calcium aluminate cement CA-70) 6%, silicon-dioxide ultrafine powder.6.9%, Sodium hexametaphosphate 99 0.1% and zirconium English yarn 5% are formed.
8～5mm alumine is that 18%, 5～3mm alumine is that 18%, 3～1mm alumine is that 18%, 1～0.044mm alumine is 21% in the alumine; 5～3mm mullite is 1% in the mullite, and the 0.044mm mullite is 6%.
A kind ofly utilize top described mould material to prepare the method for prefabricated component: the various raw materials in the above-mentioned mould material are chosen, after the selection material is carried out fragmentation, the granularity of broken back material is 5～3mm, in mixture, add entry then, the ratio of water and the two add-on of mixture is 6: 100, stir, inject mould after stirring, vibrating forming toasts then, insulation was 24 hours when storing temperature reached 25 ℃, insulation is 36 hours in the time of 200 ℃, calcines at last, and calcining temperature is 1340 ℃, calcination time is 16 hours, promptly gets the product prefabricated component after the calcining.
Embodiment six: a kind of mould material and prefabricated component thereof that is used for air guide wall for vetical furnace, no longer to narrate with embodiment one something in common, and difference is:
Mould material is by raw material 0.044～8mm alumine 78%, 0.044～8mm mullite 5%, cement (pure calcium aluminate cement CA-70) 2%, and silicon-dioxide ultrafine powder 4%, Sodium hexametaphosphate 99 1% and zirconium English yarn 10% are formed.
8～5mm alumine is that 19%, 5～3mm alumine is that 19%, 3～1mm alumine is that 18%, 1～0.044mm alumine is 22% in the alumine; 5～3mm mullite is 1% in the mullite, and the 0.044mm mullite is 4%.
A kind ofly utilize top described mould material to prepare the method for prefabricated component: the various raw materials in the above-mentioned mould material are chosen, after the selection material is carried out fragmentation, the granularity of broken back material is 3～1mm, in mixture, add entry then, the ratio of water and the two add-on of mixture is 6: 100, stir, inject mould after stirring, vibrating forming toasts then, insulation was 20 hours when storing temperature reached 25 ℃, insulation is 40 hours in the time of 200 ℃, calcines at last, and calcining temperature is 1360 ℃, calcination time is 16 hours, promptly gets the product prefabricated component after the calcining.
Embodiment seven: a kind of mould material and prefabricated component thereof that is used for air guide wall for vetical furnace, no longer to narrate with embodiment one something in common, and difference is:
Mould material is by raw material 0.044～8mm alumine 80%, 0.044～8mm mullite 6%, cement (pure calcium aluminate cement CA-70) 2%, and silicon-dioxide ultrafine powder 3.3%, tripoly phosphate sodium STPP 0.7% and zirconium English yarn 8% are formed.
8～5mm alumine is that 20%, 5～3mm alumine is that 20%, 3～1mm alumine is that 17%, 1～0.044mm alumine is 23% in the alumine; 5～3mm mullite is 1% in the mullite, and the 0.044mm mullite is 5%.
A kind ofly utilize top described mould material to prepare the method for prefabricated component: the various raw materials in the above-mentioned mould material are chosen, after the selection material is carried out fragmentation, the granularity of broken back material is 5～3mm, in mixture, add entry then, the ratio of water and the two add-on of mixture is 6: 100, stir, inject mould after stirring, vibrating forming toasts then, insulation was 24 hours when storing temperature reached 25 ℃, insulation is 44 hours in the time of 200 ℃, calcines at last, and calcining temperature is 1380 ℃, calcination time is 15 hours, promptly gets the product prefabricated component after the calcining.
Embodiment eight: a kind of mould material and prefabricated component thereof that is used for air guide wall for vetical furnace, no longer to narrate with embodiment one something in common, and difference is:
Mould material is by raw material 0.044～8mm alumine 84%, 0.044～8mm mullite 5%, cement (pure calcium aluminate cement CA-70) 2.95%, and silicon-dioxide ultrafine powder 3%, Sodium hexametaphosphate 99 0.05% and zirconium English yarn 5% are formed.
8～5mm alumine is that 20%, 5～3mm alumine is that 20%, 3～1mm alumine is that 20%, 1～0.044mm alumine is 24% in the alumine; 5～3mm mullite is 1% in the mullite, and the 0.044mm mullite is 4%.
A kind ofly utilize top described mould material to prepare the method for prefabricated component: the various raw materials in the above-mentioned mould material are chosen, after the selection material is carried out fragmentation, the granularity of broken back material is 1～0.044mm, in mixture, add entry then, the ratio of water and the two add-on of mixture is 6: 100, stir, inject mould after stirring, vibrating forming toasts then, insulation was 24 hours when storing temperature reached 25 ℃, insulation is 48 hours in the time of 200 ℃, calcines at last, and calcining temperature is 1400 ℃, calcination time is 15 hours, promptly gets the product prefabricated component after the calcining.
Claims (3)
1. mould material that is used for air guide wall for vetical furnace, it is characterized in that: be unit with the weight percentage, described mould material is by raw material 0.044～8mm alumine 60～84%, 0.044～8mm mullite 5～15%, cement 2～10%, silicon-dioxide ultrafine powder 3～8%, tripoly phosphate sodium STPP or Sodium hexametaphosphate 99 0.01～1% and zircon sand 5～12% are formed;
The content of aluminum oxide＞80% in the described alumine; Wherein 8～5mm alumine is 15～20%, and 5～3mm alumine is 15～20%, and 3～1mm alumine is 15～20%, and 1～0.044mm alumine is 15～24%;
5～3mm mullite is 1～5% in described 0.044～8mm mullite, and the 0.044mm mullite is 4～10%.
2. the mould material that is used for air guide wall for vetical furnace according to claim 1 is characterized in that: described cement is pure calcium aluminate cement CA-70.
3. method of utilizing the described mould material of claim 1 to prepare prefabricated component, it is characterized in that: take by weighing various raw materials by the described weight percentage proportioning of claim 1, choose, after the selection material is carried out fragmentation, the granularity of broken back material is 8～5mm, or 5～3mm, or 3～1mm, or 1～0.044mm, in mixture, add entry then, the ratio of water and the two add-on of mixture is 6: 100, stirs, and mould is injected in the back that stirs, vibrating forming, toast then, insulation was 16～24 hours when storing temperature reached 25 ℃, and insulation is 24～48 hours in the time of 200 ℃, calcine at last, calcining temperature is 1300～1400 ℃, and calcination time is 15～16 hours, promptly gets the product prefabricated component after the calcining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100501423A CN101293778B (en) | 2008-06-25 | 2008-06-25 | Pouring material for air guide wall for vertical furnace and prefabricated component |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100501423A CN101293778B (en) | 2008-06-25 | 2008-06-25 | Pouring material for air guide wall for vertical furnace and prefabricated component |
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| Publication Number | Publication Date |
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| CN101293778A CN101293778A (en) | 2008-10-29 |
| CN101293778B true CN101293778B (en) | 2011-03-23 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104370559B (en) * | 2014-10-24 | 2016-04-27 | 北京东峰兴达耐火材料有限公司 | Impermeabilisation anti-erosion aluminium smelting furnace molten bath mould material |
| CN106927841A (en) * | 2017-04-06 | 2017-07-07 | 江苏江能新材料科技有限公司 | A kind of smelting ferronickel from red soil nickel ore mineral hot furnace bell center castable and preparation method |
| CN110657663A (en) * | 2018-06-29 | 2020-01-07 | 山西通才工贸有限公司 | Construction method of air guide wall of shaft furnace |
| CN110204346A (en) * | 2019-07-03 | 2019-09-06 | 辽宁科技大学 | A kind of preparation method of mullite crystal whisker enhancing high alumina castable firing prefabricated section |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1415446A (en) * | 2001-10-29 | 2003-05-07 | 宝山钢铁股份有限公司 | Pouring material for permanent liner in pouring basket |
| CN101190850A (en) * | 2007-09-30 | 2008-06-04 | 河南省耕生耐火材料有限公司 | Pouring material for furnace wall built-in channel heat-accumulating type heating furnace |
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2008
- 2008-06-25 CN CN2008100501423A patent/CN101293778B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1415446A (en) * | 2001-10-29 | 2003-05-07 | 宝山钢铁股份有限公司 | Pouring material for permanent liner in pouring basket |
| CN101190850A (en) * | 2007-09-30 | 2008-06-04 | 河南省耕生耐火材料有限公司 | Pouring material for furnace wall built-in channel heat-accumulating type heating furnace |
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