CN101973772A - High-strength corundum mullite brick for annular silicon steel thermal treatment furnace and manufacture method thereof - Google Patents
High-strength corundum mullite brick for annular silicon steel thermal treatment furnace and manufacture method thereof Download PDFInfo
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- CN101973772A CN101973772A CN 201010523052 CN201010523052A CN101973772A CN 101973772 A CN101973772 A CN 101973772A CN 201010523052 CN201010523052 CN 201010523052 CN 201010523052 A CN201010523052 A CN 201010523052A CN 101973772 A CN101973772 A CN 101973772A
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Abstract
The invention discloses a high-strength corundum mullite brick for an annular silicon steel thermal treatment furnace, which comprises compact white corundum, slabby corundum, sintering mullite, activated aluminium oxide, a mixed additive and a binding agent. A manufacture method of the high-strength corundum mullite brick comprises the following steps of: 1, selecting materials; 2, blending the materials: discharging the mixed materials in the step 1; 3, filling a die: charging the mixed materials in the step 1 in the forming die; 4, pressurizing and forming: pressurizing and forming the died materials by using a brick machine; 5, alimenting; 6, baking: baking the alimented semi-finished product; and 7, setting and sintering: setting and sintering the baked semi-finished product to obtain a finished product.
Description
Technical field
The present invention relates to a kind of inner lining refractory and forming method thereof of rotary heating furnace, especially relate to a kind of corundum-mullite brick (VIP-75) inner lining refractory and forming method thereof, belong to smelting and heating inner lining material and working method technical field thereof.
Background technology
Rotary heating furnace has energy-conserving and environment-protective, to characteristics such as product by heating stable and uniform, but the environment for use very severe of the fire resistive material product of its liner, heat exchange is frequent, and supporting power is big, thereby its thermal shock resistance requires high, and compressive strength requires also higherly, and therefore to requiring also highly with the supporting refractory materials of rotary heating furnace, what the forming method of traditional inner lining material adopted is casting, this kind forming method, die needed quantity is a lot, and the cast curing time is long, and the size deviation of brick is big, Forming Quality can't guarantee, produces relatively difficulty of the supply of material on time.Summary of the invention
In order to overcome the deficiencies in the prior art, the object of the present invention is to provide that a kind of use number of molds is few, moulding is easy, the annular silicon steel heat treatment furnace that quality is good, molding time is short is with high-strength corundum-mullite brick and manufacture method thereof.
The present invention is achieved through the following technical solutions:
A kind of annular silicon steel heat treatment furnace is characterized in that with high-strength corundum-mullite brick the quality percentage composition of component that comprises and each component is as follows:
Fine and close white fused alumina 45-55%
Plate diamond spar 5-10%
Fused mullite 15-25%
Activated alumina 3-8%
Mixed additive 5-10%
In addition, comprise that also quality is the wedding agent of the 3-10% of above-mentioned each component quality sum.
The specification of above-mentioned fine and close white fused alumina is: Al
2O
3〉=98.5%, volume density 〉=3.50g/cm
3, void content≤10%.
The specification of plate diamond spar is: Al
2O
3〉=98.5%, volume density: 〉=3.50g/cm
3, void content :≤6%.
The specification of fused mullite is: Al
2O
3〉=70%, volume density: 〉=2.70g/cm
3, SiO
2: 21～28%, Fe
2O
3:≤0.5%.
The specification of activated alumina is: Al
2O
3〉=99%.
In addition, above-mentioned mixed additive comprises zircon flour and silicon powder.
And described wedding agent is a mud.
A kind of annular silicon steel heat treatment furnace may further comprise the steps with the manufacture method of high-strength corundum-mullite brick:
(1) selection: the quality percentage composition of each component and each component is respectively: fine and close white fused alumina 45-55%; Plate diamond spar 5-10%; Fused mullite 15-25%; Activated alumina 3-8%; Mixed additive 5-10%, and quality is the wedding agent of the 3-10% of above-mentioned each component quality sum;
(2) batching:
At first with the plate diamond spar in the step (1), particle is less than the fines part of 1～0 ㎜ in the fused mullite, activated alumina and the mixed additive proportioning of (1) set by step carry out pre-mixing, form the pre-mixing fine powder, then with particle in fine and close white fused alumina in the step (1) and the fused mullite greater than the coarse particles batch mixing of 1～0 ㎜ 3～5 minutes, to wherein adding wedding agent mud, batch mixing 5 minutes, after adding above-mentioned pre-mixing fine powder again, batch mixing discharging after 15 minutes, pug sealing ageing mixture 16～24 hours;
(3) dress mould: at first on the bed die of forming mould, sprinkle the fines of the mixed particle of one deck step (2) less than 1～0 ㎜, then the remaining material of step (2) is divided and join in the mould for three times, and after each reinforced finishing, all floating material, and use the instrument ramming, insert with plate position around mould and smash, and the material that reaches the corner around the mould is wanted a little higher than intermediary material, sprinkles one deck fines again on the surface of material at last;
(4) extrusion forming: the material after utilizing brick pressing machine to the described dress mould of step (3) gently shook 10～20 seconds earlier, regenerated 20～60 seconds again;
(5) health: the work in-process brick after the extrusion forming, natural Health preservation 3～6 days;
(6) baking: step (5) through the work in-process brick of nutriment, is pushed and enters drying room and toast, and wherein storing temperature is 110 ℃～160 ℃, and storing time is 24～40h;
(7) loading of kiln sintering: with the work in-process brick loading of kiln of step (6) through overbaking, when loading of kiln, adobe divides two rows to place vertically, and one of kiln car with brick processings of banking up a fire, under 1500 ℃～1600 ℃ temperature condition, burning 8～12h obtains finished product then.
And above-mentioned brick pressing machine is the hydraulic vibration brick pressing machine.
The invention has the beneficial effects as follows: the present invention is by adopting rational component, and component proportioning, realized the premium properties of corundum-mullite brick, and pass through to adopt the molding mode of the mode of mechanical pressing as refractory materials corundum-mullite brick, significantly reduced the usage quantity of mould, and technology is simple, the blanks and moulding and conserving time is short and then shortened the production time greatly, has improved working efficiency.
Embodiment
Below in conjunction with specific embodiment, describe the specific embodiment of the present invention in detail:
Annular silicon steel heat treatment furnace comprises the quality percentage composition of following component and each component with high-strength corundum-mullite brick:
Embodiment 1:
Fine and close white fused alumina, the quality percentage composition is 53%; Plate diamond spar, quality percentage composition are 22%; Fused mullite, quality percentage composition are 8%; Activated alumina, quality percentage composition are 7%; The total quality percentage composition of mixed additive zircon flour and silicon powder is 10%, and wedding agent is a mud, and it is for adding component, and the quality of its adding is 4% of an above-mentioned each component quality sum.
Embodiment 2:
Fine and close white fused alumina, the quality percentage composition is 50%; Plate diamond spar, quality percentage composition are 22%; Fused mullite, quality percentage composition are 10%; Activated alumina, quality percentage composition are 8%; The total quality percentage composition of mixed additive zircon flour and silicon powder is 10%, and wedding agent is a mud, and it is for adding component, and the quality of its adding is 5% of an above-mentioned each component quality sum.
Embodiment 3
Fine and close white fused alumina, the quality percentage composition is 47%; Plate diamond spar, quality percentage composition are 24%; Fused mullite, quality percentage composition are 10%; Activated alumina, quality percentage composition are 9%; The total quality percentage composition of mixed additive zircon flour and silicon powder is 10%, and wedding agent is a mud, and it is for adding component, and the quality of its adding is 6% of an above-mentioned each component quality sum.
The component specification that relates among three above-mentioned embodiment is:
Fine and close white fused alumina, specification is: Al
2O
3〉=98.5%, volume density 〉=3.50g/cm
3, void content≤10%;
Plate diamond spar, specification is: Al
2O
3〉=98.5%, volume density: 〉=3.50g/cm
3, void content :≤6%;
Fused mullite, specification is: Al
2O
3〉=70%, volume density: 〉=2.70g/cm
3, SiO
2: 21～28%, Fe
2O
3:≤0.5%;
Activated alumina, specification is: Al
2O
3〉=99%.
Annular silicon steel heat treatment furnace is with the manufacture method of high-strength corundum-mullite brick,
Embodiment 4:
(1) selection: select materials by embodiment 1 described component and component quality percentage composition;
(2) batching: at first with the described plate diamond spar of step (1), particle is less than the fines part of 1～0 ㎜ in the fused mullite, activated alumina and the mixed additive proportioning of (1) set by step carry out pre-mixing, form the pre-mixing fine powder, then with particle in fine and close white fused alumina in the step (1) and the fused mullite greater than the coarse particles batch mixing of 1～0 ㎜ 3～5 minutes, to wherein adding wedding agent mud, batch mixing 5 minutes, add above-mentioned pre-mixing fine powder again after, batch mixing discharging after 15 minutes, pug sealing ageing mixture 16～24 hours, wherein, the spring, winter, ageing mixture 24 hours, and in the summer, autumn, ageing mixture 16 hours;
(3) dress mould: at first on the bed die of forming mould, sprinkle the fines of the mixed particle of one deck step (2) less than 1～0 ㎜, then with the remaining material of step (2), divide and join in the mould for three times, and it is all floating after each reinforced finishing material, and use the instrument ramming, insert and smash in the position around mould with plate, and around the mould and the material of corner will a little higher than intermediary material, sprinkle one deck fines again on the surface of material at last;
(4) extrusion forming: the material after utilizing the hydraulic vibration brick pressing machine to the described dress mould of step (3) gently shook 10～20 seconds earlier, regenerated 20～60 seconds again;
(5) health: the work in-process brick after the extrusion forming, natural Health preservation 3～6 days wherein 6 days natural Health preservation time in winter, then needs 3 days in summer;
(6) baking: with the work in-process brick of step (5) through nutriment, push drying room and toast, wherein storing temperature is 120 ℃, and the time is 24 hours;
(7) loading of kiln sintering: with the work in-process brick loading of kiln of step (6) through overbaking, when loading of kiln, adobe divides two rows to place vertically, and one of kiln car with the brick processing of banking up a fire, firing temperature is 1550 ℃, the time is 12h, obtains finished product.
Embodiment 5:
(1) selection: select materials by embodiment 2 described components and component quality percentage composition;
(2) batching: at first with the described plate diamond spar of step (1), particle is less than the fines part of 1～0 ㎜ in the fused mullite, activated alumina and the mixed additive proportioning of (1) set by step carry out pre-mixing, form the pre-mixing fine powder, then with particle in fine and close white fused alumina in the step (1) and the fused mullite greater than the coarse particles batch mixing of 1～0 ㎜ 3～5 minutes, to wherein adding wedding agent mud, batch mixing 5 minutes, add above-mentioned pre-mixing fine powder again after, batch mixing discharging after 15 minutes, pug sealing ageing mixture 16～24 hours, wherein, the spring, winter, ageing mixture 24 hours, and in the summer, autumn, ageing mixture 16 hours;
(3) dress mould: at first on the bed die of forming mould, sprinkle the fines of the mixed particle of one deck step (2) less than 1～0 ㎜, then with the remaining material of step (2), divide and join in the mould for three times, and after each reinforced finishing, all floating material, and use the instrument ramming, insert with plate position around mould and smash, and the material that reaches the corner around the mould is wanted a little higher than intermediary material, sprinkles one deck fines again on the surface of material at last;
(4) extrusion forming: the material after utilizing the hydraulic vibration brick pressing machine to the described dress mould of step (3) gently shook 10～20 seconds earlier, regenerated 20～60 seconds again;
(5) nutriment: the work in-process after the extrusion forming seal ageing mixture natural Health preservation 3～6 days through pug, wherein 6 days natural Health preservation time in winter, then need 3 days in summer;
(6) baking: with the work in-process brick of step (5) through nutriment, push drying room and toast, wherein storing temperature is 150 ℃, and storing time is 30h;
(7) loading of kiln sintering: with the work in-process brick loading of kiln of step (6) through overbaking, when loading of kiln, adobe divides two rows to place vertically, and one of kiln car with the brick processing of banking up a fire, firing temperature is 1500 ℃, the time is 12h, obtains finished product.
Embodiment 6:
(1) selection: select materials by embodiment 2 described components and component quality percentage composition;
(2) batching: at first with the described plate diamond spar of step (1), particle is less than the fines part of 1～0 ㎜ in the fused mullite, activated alumina and the mixed additive proportioning of (1) set by step carry out pre-mixing, form the pre-mixing fine powder, then with particle in fine and close white fused alumina in the step (1) and the fused mullite greater than the coarse particles batch mixing of 1～0 ㎜ 3～5 minutes, to wherein adding wedding agent mud, batch mixing 5 minutes, add above-mentioned pre-mixing fine powder again after, batch mixing discharging after 15 minutes, pug sealing ageing mixture 16～24 hours, wherein, the spring, winter, ageing mixture 24 hours, and in the summer, autumn, ageing mixture 16 hours;
(3) dress mould: at first on the bed die of forming mould, sprinkle the fines of the mixed particle of one deck step (2) less than 1～0 ㎜, then with the remaining material of step (2), divide and join in the mould for three times, and after each reinforced finishing, all floating material, and use the instrument ramming, insert with plate position around mould and smash, and the material that reaches the corner around the mould is wanted a little higher than intermediary material, sprinkles one deck fines again on the surface of material at last;
(4) extrusion forming: the material after utilizing the hydraulic vibration brick pressing machine to the described dress mould of step (3) gently shook 10～20 seconds earlier, regenerated 20～60 seconds again;
(5) nutriment: the work in-process after the extrusion forming seal ageing mixture natural Health preservation 3～6 days through pug, wherein 6 days natural Health preservation time in winter, then need 3 days in summer;
(6) baking: with the work in-process brick of step (5) through nutriment, push drying room and toast, wherein storing temperature is 150 ℃, and storing time is 24h;
(7) loading of kiln sintering: with the work in-process brick loading of kiln of step (6) through overbaking, when loading of kiln, adobe divides two rows to place vertically, and one of kiln car with the brick processing of banking up a fire, firing temperature is 1500 ℃, the time is 10h, obtains finished product.
The end properties index such as the table 1 that obtain respectively of embodiment 4, embodiment 5 and embodiment 6 wherein:
And prescribed value is as shown in table 2:
Table 2:
Contrast by table 1 and table 2 is as can be known: all physics chemistry index of embodiment 4-6 has all surpassed requirement.
In sum: the present invention is by adopting rational component, and component proportioning, realized the premium properties of corundum-mullite brick, and pass through to adopt the molding mode of the mode of mechanical pressing as refractory materials corundum-mullite brick, significantly reduced the usage quantity of mould, and technology is simple, the blanks and moulding and conserving time is short and then shortened the production time greatly, has improved working efficiency.。
Below disclose the present invention with preferred embodiment, so it is not in order to restriction the present invention, and all employings are equal to replaces or technical scheme that the equivalent transformation mode is obtained, all drops within protection scope of the present invention.
Claims (9)
1. an annular silicon steel heat treatment furnace is characterized in that with high-strength corundum-mullite brick, and the quality percentage composition of component that comprises and each component is as follows:
Fine and close white fused alumina 45-55%
Plate diamond spar 5-10%
Fused mullite 15-25%
Activated alumina 3-8%
Mixed additive 5-10%,
In addition, comprise that also quality is the wedding agent of the 3-10% of above-mentioned each component quality sum.
2. annular silicon steel heat treatment furnace according to claim 1 is characterized in that with high-strength corundum-mullite brick and manufacture method thereof the specification of described fine and close white fused alumina is: Al
2O
3〉=98.5%, volume density 〉=3.50g/cm
3, void content≤10%.
3. annular silicon steel heat treatment furnace according to claim 1 is characterized in that with high-strength corundum-mullite brick and manufacture method thereof the specification of described plate diamond spar is: Al
2O
3〉=98.5%, volume density 〉=3.50g/cm
3, void content≤6%.
4. annular silicon steel heat treatment furnace according to claim 1 is characterized in that with high-strength corundum-mullite brick and manufacture method thereof the specification of described fused mullite is: Al
2O
3〉=70%, volume density: 〉=2.70g/cm
3, SiO
2: 21～28%, Fe
2O
3:≤0.5%.
5. annular silicon steel heat treatment furnace according to claim 1 is characterized in that with high-strength corundum-mullite brick and manufacture method thereof the specification of described activated alumina is: Al
2O
3〉=99%.
6. annular silicon steel heat treatment furnace according to claim 1 is characterized in that with high-strength corundum-mullite brick and manufacture method thereof described mixed additive comprises zircon flour and silicon powder.
7. annular silicon steel heat treatment furnace according to claim 1 is characterized in that with high-strength corundum-mullite brick and manufacture method thereof described wedding agent is a mud.
8. an annular silicon steel heat treatment furnace is characterized in that with the manufacture method of high-strength corundum-mullite brick, may further comprise the steps:
(1) selection: the quality percentage composition of each component and each component is respectively: fine and close white fused alumina 45-55%; Plate diamond spar 5-10%; Fused mullite 15-25%; Activated alumina 3-8%; Mixed additive 5-10%, and quality is the wedding agent of the 3-10% of above-mentioned each component quality sum;
(2) batching: at first with the plate diamond spar in the step (1), particle is less than the fines part of 1～0 ㎜ in the fused mullite, activated alumina and the mixed additive proportioning of (1) set by step carry out pre-mixing, form the pre-mixing fine powder, then with particle in fine and close white fused alumina in the step (1) and the fused mullite greater than the coarse particles batch mixing of 1～0 ㎜ 3～5 minutes, to wherein adding wedding agent mud, batch mixing 5 minutes, after adding above-mentioned pre-mixing fine powder again, batch mixing discharging after 15 minutes, pug sealing ageing mixture 16～24 hours;
(3) dress mould: at first on the bed die of forming mould, sprinkle the fines of the mixed particle of one deck step (2) less than 1～0 ㎜, then the remaining material of step (2) is divided and join in the mould for three times, and after each reinforced finishing, all floating material, and use the instrument ramming, insert with plate position around mould and smash, and the material that reaches the corner around the mould is wanted a little higher than intermediary material, sprinkles one deck fines again on the surface of material at last;
(4) extrusion forming: the material after utilizing brick pressing machine to the described dress mould of step (3) gently shook 10～20 seconds earlier, regenerated 20～60 seconds again;
(5) health: the work in-process brick after the extrusion forming, natural Health preservation 3～6 days;
(6) baking: step (5) through the work in-process brick of nutriment, is pushed and enters drying room and toast, and wherein storing temperature is 110 ℃～160 ℃, and storing time is 24～40h;
(7) loading of kiln sintering: with the work in-process brick loading of kiln of step (6) through overbaking, when loading of kiln, adobe divides two rows to place vertically, and one of kiln car with brick processings of banking up a fire, under 1500 ℃～1600 ℃ temperature condition, burning 8～12h obtains finished product then.
9. annular silicon steel heat treatment furnace according to claim 8 is characterized in that with the manufacture method of high-strength corundum-mullite brick described brick pressing machine is the hydraulic vibration brick pressing machine.
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|---|---|---|---|
| CN 201010523052 CN101973772A (en) | 2010-10-28 | 2010-10-28 | High-strength corundum mullite brick for annular silicon steel thermal treatment furnace and manufacture method thereof |
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|---|---|---|---|
| CN 201010523052 CN101973772A (en) | 2010-10-28 | 2010-10-28 | High-strength corundum mullite brick for annular silicon steel thermal treatment furnace and manufacture method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104803692A (en) * | 2015-04-22 | 2015-07-29 | 浙江自立股份有限公司 | Corundum-mullite burnt brick applied to gas turbine combustion chamber and preparation method thereof |
| CN105000893A (en) * | 2014-09-09 | 2015-10-28 | 长兴嘉诚耐火材料有限公司 | High temperature resistant composite crucible and manufacturing method thereof |
| CN112745110A (en) * | 2020-12-07 | 2021-05-04 | 北京金隅通达耐火技术有限公司 | High-density zirconia-corundum brick for hazardous waste disposal rotary kiln |
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| EP0957329A1 (en) * | 1996-06-13 | 1999-11-17 | Robert G. Graham | High temperature high pressure air-to-air heat exchangers and assemblies useful therein |
| CN101113104A (en) * | 2007-07-11 | 2008-01-30 | 重庆钢铁(集团)有限责任公司 | Production of composite corundum carbon brick for ladle |
| CN101239829A (en) * | 2008-03-11 | 2008-08-13 | 郑州市鑫磊冶金材料有限公司 | High-performance fire-resistant abrasion-proof composite material |
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2010
- 2010-10-28 CN CN 201010523052 patent/CN101973772A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0957329A1 (en) * | 1996-06-13 | 1999-11-17 | Robert G. Graham | High temperature high pressure air-to-air heat exchangers and assemblies useful therein |
| CN101113104A (en) * | 2007-07-11 | 2008-01-30 | 重庆钢铁(集团)有限责任公司 | Production of composite corundum carbon brick for ladle |
| CN101239829A (en) * | 2008-03-11 | 2008-08-13 | 郑州市鑫磊冶金材料有限公司 | High-performance fire-resistant abrasion-proof composite material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105000893A (en) * | 2014-09-09 | 2015-10-28 | 长兴嘉诚耐火材料有限公司 | High temperature resistant composite crucible and manufacturing method thereof |
| CN104803692A (en) * | 2015-04-22 | 2015-07-29 | 浙江自立股份有限公司 | Corundum-mullite burnt brick applied to gas turbine combustion chamber and preparation method thereof |
| CN112745110A (en) * | 2020-12-07 | 2021-05-04 | 北京金隅通达耐火技术有限公司 | High-density zirconia-corundum brick for hazardous waste disposal rotary kiln |
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Application publication date: 20110216 |