CN1861548A - Corundum combined high-strength refractory ball - Google Patents
Corundum combined high-strength refractory ball Download PDFInfo
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- CN1861548A CN1861548A CN 200610017724 CN200610017724A CN1861548A CN 1861548 A CN1861548 A CN 1861548A CN 200610017724 CN200610017724 CN 200610017724 CN 200610017724 A CN200610017724 A CN 200610017724A CN 1861548 A CN1861548 A CN 1861548A
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Abstract
A high-strength refractory ball used for the spherical air heater of blast furnace is proportionally prepared from sub-white corundum, brown corundum, alpha-Al2O3, spherical clay, composite additive and sinter promoter.
Description
One, technical field: the present invention relates to a kind of refractory ball, particularly relate to the high-strength refractory ball that a kind of corundum combines.
Two, background technology: pebble stove began from 1973 to promote, application be the blast furnace production new technology, it is compared than traditional checker brick hotblast stove, it is low to have an investment, thermo-efficiency height, the characteristics of energy-conservation, water saving.The heat exchange element that pebble stove uses is refractory ball, generally adopt different diameter (φ 40～80) refractory ball of high alumina matter, magnalium matter, material such as siliceous, facts have proved for many years, the refractory ball of above-mentioned material, because the easy efflorescence of magnalium matter, high alumina matter is bonding mutually, siliceous defective such as burst apart, hotblast stove uses just must be changed in 1～2 year in blowing out, and its thermal capacity and hot strength are undesirable, can not be applicable to 600m
3Above blast furnace pebble stove.
Application number is 98100364.8 patent, and the high alumina matter refractory ball of invention is at 450m
3Result of use is better on the following blast furnace, the highest wind-warm syndrome can reach 1100 ℃, can satisfy general medium and small blast furnace production requirement, but this high aluminium ball is in hotblast stove high temperature section poor durability, life-span is low, and high aluminium ball can be bonded to and stick together during reason was to use, and wanted the clear ball of blowing out, changed the shuttle in 1～3 year, and its thermal capacity and insufficient strength height, be not suitable for 450m
3The pebble stove high temperature section of above blast furnace.
Three, summary of the invention:
The object of the invention: overcome the shortcoming of existing refractory ball, it is big to produce thermal capacity, compressive strength height, the refractory ball that thermostability is high.
Technical scheme of the present invention:
The high-strength refractory ball that a kind of corundum combines is represented with weight percent, contains sub-white corundum 42～60% in the raw material, brown alundum powder 30～40%, α-Al
2O
3Micro mist 2～10%, ball clay 2～8% adds the compound additive that accounts for above-mentioned raw materials gross weight 6～16%, 0.2～2.6% sintering aids in addition.
Described sub-white corundum is to adopt electric smelting to produce, and takes off charcoal through calcining and handle, and requiring its granularity is 0～3mm, Al
2O
3Content 〉=99%.
Described brown alundum powder is to adopt electric smelting to produce, and takes off charcoal through calcining and handle, and requires its granularity less than 0.088mm, Al
2O
3Content 〉=95%.
Described α-Al
2O
3Micro mist is to adopt electric smelting to produce, and takes off charcoal through calcining and handle, and requires granularity less than 5 μ m, α-Al
2O
3Active alpha-the Al of content 〉=90%
2O
3Micro mist.
Described ball clay is Al
2O
3The Guangxi clay of content 30～35%.
Described compound additive is a boric acid, or Tai-Ace S 150, or SODIUM PHOSPHATE, MONOBASIC, or in the water glass any, and all the other are xylogen.
Described sintering aids is any in borax, potassium felspar sand, albite, fluorite, the water glass, or any two, sintering aids is the dry powder of granularity 0.074～0.5mm.
Positive beneficial effect of the present invention:
Associative list 1, table 2, can find out that the present invention has the following advantages:
(1) small product size density height, thermal capacity is big, volume density 〉=2.83g/cm
3, can make into blast-furnace hot-air temperature＞1150 ℃.
(2) compressive strength of product 〉=40000N/ ball, thermal shock resistance 〉=26 time (at 1100 ℃, under the water-cooled condition), refractoriness under load under the 0.2MPa 〉=1570 ℃ are satisfied 600m fully
3The performance requriements of above blast furnace pebble stove refractory ball.
(3) product life is long.Use after 2～3 years, non-caked one-tenth sticks together, and is indeformable.Can use repeatedly behind the clear ball, a stove labour is all more than 5 years.Save a large amount of recondition expenses, saved cost, had better economic and social benefit.
Table 1: the high-strength refractory ball measured performance index that corundum combines among the embodiment
| Sequence number | Project | Unit | Embodiment two | Embodiment six | Embodiment 12 | |
| 1 | Composition | Al 2O 3 | ％ | 85.2 | 86.4 | 86.7 |
| Fe 2O 3 | ％ | 1.5 | 1.45 | 1.38 | ||
| 2 | Apparent porosity | ％ | 19.6 | 18.3 | 17.5 | |
| 3 | Volume density | g/cm 3 | 2.83 | 2.90 | 2.85 | |
| 4 | Cold crushing strength | The N/ ball | 41000 | 40000 | 42000 | |
| 5 | Refractoriness | ℃ | ≥1790 | ≥1790 | ≥1790 | |
| 6 | Reheating linear change rate on reheating [1450 ℃ * 2h] | ％ | 0.2 | 0 | 0.1 | |
| 7 | High temperature creep rate [0.2MPa * 1400 ℃ * 5h] | ％ | 0.2 | 0.15 | 0.18 | |
| 8 | Loading softening begins temperature | ℃ | 1570 | 1580 | 1590 | |
| 9 | Thermal shock resistance [1100 ℃-water-cooled] | Inferior | 26 | 27 | 28 | |
| 10 | Thermal conductivity [1100 ℃] | W/m·K | 0.69 | 0.6 | 0.64 | |
Table 2: the high-strength refractory ball performance index standard that corundum combines
| Sequence number | Project | Unit | Standard value | |
| 1 | Composition | Al 2O 3 | ％ | 80 |
| Fe 2O 3 | ％ | ≤1.5 | ||
| 2 | Apparent porosity | ％ | ≤19 | |
| 3 | Volume density | g/cm 3 | ≥2.8 | |
| 4 | Cold crushing strength | The N/ ball | ≥40000 | |
| 5 | Refractoriness | ℃ | ≥1790 | |
| 6 | Reheating linear change rate on reheating [1450 ℃ * 2h] | ％ | 0～0.20 | |
| 7 | High temperature creep rate [0.2MPa * 1400 ℃ * 5h] | ％ | ≤0.2 | |
| 8 | Loading softening begins temperature | ℃ | ≥1580 | |
| 9 | Thermal shock resistance [1100 ℃-water-cooled] | Inferior | ≥26 | |
| 10 | Thermal conductivity [1100 ℃] | W/m·K | ≥0.6 | |
Four, embodiment:
Embodiment one:
Proportioning raw materials by one correspondence of embodiment in the table 3 is weighed, make dry blend behind the mixing, add compound additive then, wherein xylogen is that density is 6% for the 1.15g/L lignosulfite, Tai-Ace S 150 2%, boric acid 0.5% adds the sintering aids borax, and Sleepy mud is 24～28 hours after mixed grind is even, be pressed into the ball base through 60 tons of friction presses, elder generation's seasoning places the ball base forced drying under the condition of 180～200 ℃ of temperature again, requires moisture in the ball base＜0.4%, reenter klining, firing temperature is 1480～1500 ℃, is incubated 16～20 hours, kiln discharge.
Behind the product kiln discharge, its physicochemical property, surface quality and physical dimension are tested; The brick fuel that is up to the standards is processed by dimensional standard or contract requirement; Assemble in advance then and check, draw pre-assembly drawing after the passed examination, the layering numbering; Assembly drawing hands over user and engineering department to file.
At last with product warehousing, keeping and delivery.
Embodiment two: the proportioning raw materials by two correspondences of embodiment in the table 3 is weighed, make dry blend behind the mixing, add compound additive then, wherein xylogen is that density is 10% for the 1.15g/L lignosulfite, Tai-Ace S 150 4%, boric acid 1.0% adds the sintering aids potassium felspar sand, and Sleepy mud is 28～36 hours after mixed grind is even, be pressed into the ball base through 60 tons of friction presses, elder generation's seasoning places the ball base temperature to be lower than forced drying under 200 ℃ the condition again, requires moisture in the ball base＜0.4%, reenter klining, firing temperature is 1500～1520 ℃, is incubated 20～24 hours, kiln discharge.
Other steps are with embodiment one.
Embodiment three: the proportioning raw materials by three correspondences of embodiment in the table 3 is weighed, and xylogen is that density is 8% for the 1.20g/L lignosulfite in the compound additive, and admixture is a Tai-Ace S 150 3%, boric acid 1.5%, sintering aids is an albite, and production method does not repeat with embodiment two.
Embodiment four: the proportioning raw materials by four correspondences of embodiment in the table 3 is weighed, and xylogen is that density is 9% for the 1.18g/L lignosulfite in the compound additive, and water glass 0.5%, sintering aids are fluorite, and production method does not repeat with embodiment one.
Embodiment five: the proportioning raw materials by four correspondences of embodiment in the table 3 is weighed, and xylogen is that density is 7% for the 1.19g/L lignosulfite in the compound additive, and water glass 3.6%, sintering aids are water glass, and production method does not repeat with embodiment two.
Embodiment six: the proportioning raw materials by four correspondences of embodiment in the table 3 is weighed, xylogen is that density is 7% for the 1.17g/L lignosulfite in the compound additive, and water glass 1.5%, sintering aids are borax, potassium felspar sand, production method does not repeat with embodiment one.
Embodiment seven: the proportioning raw materials by seven correspondences of embodiment in the table 3 is weighed, xylogen is that density is 7% for the 1.18g/L lignosulfite in the compound additive, Tai-Ace S 150 3%, and sintering aids is for arbitrarily than blended borax and albite, production method does not repeat with embodiment two.
Embodiment eight: the proportioning raw materials by eight correspondences of embodiment in the table 3 is weighed, xylogen is that density is 10% for the 1.20g/L lignosulfite in the compound additive, and aluminium dihydrogen phosphate is 2.5%, and sintering aids is for arbitrarily than blended borax and fluorite, production method does not repeat with embodiment one.
Embodiment nine: the proportioning raw materials by nine correspondences of embodiment in the table 3 is weighed, xylogen is that density is 7% for the 1.20g/L lignosulfite in the compound additive, and aluminium dihydrogen phosphate is 3.5%, and sintering aids is for arbitrarily than blended albite and fluorite, production method does not repeat with embodiment one.
Embodiment ten: the proportioning raw materials by ten correspondences of embodiment in the table 3 is weighed, xylogen is that density is 9% for the 1.20g/L lignosulfite in the compound additive, and aluminium dihydrogen phosphate is 4.8%, and sintering aids is for arbitrarily than blended borax and water glass, production method does not repeat with embodiment one.
Embodiment 11: the proportioning raw materials by 11 correspondences of embodiment in the table 3 is weighed, xylogen is that density is 8% for the 1.19g/L lignosulfite in the compound additive, water glass 2.3%, and sintering aids is for arbitrarily than blended potassium felspar sand and albite, production method does not repeat with embodiment one.
Embodiment 12: the proportioning raw materials by 12 correspondences of embodiment in the table 3 is weighed, xylogen is that density is 8% for the 1.17g/L lignosulfite in the compound additive, aluminium dihydrogen phosphate is 3.0%, sintering aids is for arbitrarily than blended potassium felspar sand and fluorite, production method does not repeat with embodiment one.
Embodiment 13: the proportioning raw materials by 12 correspondences of embodiment in the table 3 is weighed, xylogen is that density is 9% for the 1.16g/L lignosulfite in the compound additive, water glass 0.9%, and sintering aids is for arbitrarily than blended potassium felspar sand and water glass, production method does not repeat with embodiment two.
Embodiment 14: the proportioning raw materials by 12 correspondences of embodiment in the table 3 is weighed, xylogen is that density is 8% for the 1.16g/L lignosulfite in the compound additive, Tai-Ace S 150 3.5%, and sintering aids is for arbitrarily than blended albite and fluorite, production method does not repeat with embodiment two.
Embodiment 15: the proportioning raw materials by 12 correspondences of embodiment in the table 3 is weighed, xylogen is that density is 8% for the 1.16g/L lignosulfite in the compound additive, water glass 1.9%, and sintering aids is for arbitrarily than blended albite and water glass, production method does not repeat with embodiment two.
Embodiment 16: the proportioning raw materials by 12 correspondences of embodiment in the table 3 is weighed, xylogen is that density is 8% for the 1.16g/L lignosulfite in the compound additive, water glass 2.5%, and sintering aids is for arbitrarily than blended fluorite and water glass, production method does not repeat with embodiment two.
Table 3: each raw material weight per-cent proportioning table among the embodiment
Claims (7)
1, the high-strength refractory ball that combines of a kind of corundum is characterized in that: represent with weight percent, contain sub-white corundum 42～60% in the raw material, brown alundum powder 30～40%, α-Al
2O
3Micro mist 2～10%, ball clay 2～8% adds the compound additive that accounts for above-mentioned raw materials gross weight 6～16%, 0.2～2.6% sintering aids in addition.
2, refractory ball according to claim 1 is characterized in that: described sub-white corundum is to adopt electric smelting to produce, and takes off charcoal through calcining and handle, and requiring its granularity is 0～3mm, Al
2O
3Content 〉=99%.
3, refractory ball according to claim 1 is characterized in that: described brown alundum powder is to adopt electric smelting to produce, and takes off charcoal through calcining and handle, and requires its granularity＜0.088mm, Al
2O
3Content 〉=95%.
4, refractory ball according to claim 1 is characterized in that: described α-Al
2O
3Micro mist is to adopt electric smelting to produce, and takes off charcoal through calcining and handle, and requires granularity less than 5 μ m, α-Al
2O
3Active alpha-the Al of content 〉=90%
2O
3Micro mist.
5, refractory ball according to claim 1 is characterized in that: described ball clay is Al
2O
3The Guangxi clay of content 30～35%.
6, refractory ball according to claim 1 is characterized in that: described compound additive is a boric acid, or Tai-Ace S 150, or aluminium dihydrogen phosphate, or in the water glass any, and all the other are xylogen.
7, refractory ball according to claim 1 is characterized in that: described sintering aids is any in borax, potassium felspar sand, albite, fluorite, the water glass, or any two.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100177242A CN100383083C (en) | 2006-04-29 | 2006-04-29 | Corundum combined high-strength refractory ball |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100177242A CN100383083C (en) | 2006-04-29 | 2006-04-29 | Corundum combined high-strength refractory ball |
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| Publication Number | Publication Date |
|---|---|
| CN1861548A true CN1861548A (en) | 2006-11-15 |
| CN100383083C CN100383083C (en) | 2008-04-23 |
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ID=37389093
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|---|---|---|---|
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101555151B (en) * | 2009-05-25 | 2011-12-07 | 巩义市金岭耐火材料有限公司 | Corundum fireproof ball used for ball-type hot-blast stove and preparation method thereof |
| CN102329139A (en) * | 2011-07-22 | 2012-01-25 | 郑州京华耐火材料实业有限公司 | Integrally cast calcium carbide furnace door |
| CN102329141A (en) * | 2011-07-22 | 2012-01-25 | 郑州京华耐火材料实业有限公司 | Silicon-carbide composite corundum mullite brick |
| CN102329140A (en) * | 2011-07-22 | 2012-01-25 | 郑州京华耐火材料实业有限公司 | Joint material for hot-blast air pipeline of blast furnace |
| CN102329144A (en) * | 2011-09-29 | 2012-01-25 | 武汉科技大学 | Preparation method of high-strength wear-resistant pouring material combined with ceramics |
| KR20190029624A (en) * | 2016-06-30 | 2019-03-20 | 이머테크 에스아에스 | Sedimentation for Dry Fine Particle Refractory Compositions |
| CN114057497A (en) * | 2021-11-22 | 2022-02-18 | 郑州安耐克实业有限公司 | High-strength siliceous refractory mortar for hot blast furnace and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100404459C (en) * | 2004-03-30 | 2008-07-23 | 柳州钢铁股份有限公司 | Refractory ball for blast furnace ball type hot-blast stove |
| CN1296312C (en) * | 2005-05-13 | 2007-01-24 | 郑州豫兴氮氧结合耐火材料有限公司 | Zirconium corundum refractory ball |
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2006
- 2006-04-29 CN CNB2006100177242A patent/CN100383083C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101555151B (en) * | 2009-05-25 | 2011-12-07 | 巩义市金岭耐火材料有限公司 | Corundum fireproof ball used for ball-type hot-blast stove and preparation method thereof |
| CN102329139A (en) * | 2011-07-22 | 2012-01-25 | 郑州京华耐火材料实业有限公司 | Integrally cast calcium carbide furnace door |
| CN102329141A (en) * | 2011-07-22 | 2012-01-25 | 郑州京华耐火材料实业有限公司 | Silicon-carbide composite corundum mullite brick |
| CN102329140A (en) * | 2011-07-22 | 2012-01-25 | 郑州京华耐火材料实业有限公司 | Joint material for hot-blast air pipeline of blast furnace |
| CN102329144A (en) * | 2011-09-29 | 2012-01-25 | 武汉科技大学 | Preparation method of high-strength wear-resistant pouring material combined with ceramics |
| KR20190029624A (en) * | 2016-06-30 | 2019-03-20 | 이머테크 에스아에스 | Sedimentation for Dry Fine Particle Refractory Compositions |
| CN109689592A (en) * | 2016-06-30 | 2019-04-26 | 凯得力法国公司 | Dry particl fire proofing composition agglutinant |
| KR102403083B1 (en) * | 2016-06-30 | 2022-05-26 | 이머테크 에스아에스 | Sintering Agent for Dry Particulate Refractory Composition |
| US11608300B2 (en) | 2016-06-30 | 2023-03-21 | Calderys France S.A.S. | Sintering agent for dry particulate refractory composition |
| CN114057497A (en) * | 2021-11-22 | 2022-02-18 | 郑州安耐克实业有限公司 | High-strength siliceous refractory mortar for hot blast furnace and preparation method thereof |
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| CN100383083C (en) | 2008-04-23 |
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