CN105110775B - A kind of Corhart Zac-block is anti-cold to split production method - Google Patents
A kind of Corhart Zac-block is anti-cold to split production method Download PDFInfo
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- CN105110775B CN105110775B CN201510602215.5A CN201510602215A CN105110775B CN 105110775 B CN105110775 B CN 105110775B CN 201510602215 A CN201510602215 A CN 201510602215A CN 105110775 B CN105110775 B CN 105110775B
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Abstract
Production method is split the present invention relates to a kind of Corhart Zac-block is anti-cold, and the problem of can effectively solving Corhart Zac-block cold crack, technical scheme is to comprise the following steps：（1）Installation mold（2）The Corhart Zac-block raw material prepared is added into electric arc furnaces in two times, each feeding quantity is the half of raw material gross weight, shakeout after feeding for the first time, open electric arc furnaces, melted, ten minutes second charging in interval, the three-phase arc voltage of electric arc furnaces each of three electrodes is 205 210V, melt after 80 90 minutes, power-off stops fusing, oxygen blast 3 minutes, oxygen blast flow is 15m3/h, then proceed to fusing, the three-phase arc voltage of electric arc furnaces each of three electrodes is 205 210V, after fusing 10 minutes, power-off stops fusing, oxygen blast 3 minutes, oxygen blast flow is 15m3/ h, produce the casting liquid melted, casting liquid temperature degree now reaches more than 2000 DEG C；（3）Cast molding, production method of the present invention is simple, and burn-off rate is fast, and casting liquid viscosity is low, and cast temperature is high, effectively reduces cold crack.
Description
Technical field
The present invention relates to Corhart Zac-block technical field, particularly a kind of Corhart Zac-block is anti-cold to split production method.
Background technology
Zirconia-corundum refractory brick is mainly used in glass furnace, and current glass industry production capacity surplus, enterprise operation is difficult.Glass
The upgrading of glass quality, the increase of glass kind and eliminate high consumption low energy operation mode be only glass enterprise at present base oneself upon it
Road.
The upgrading of glass enterprise has the strict demand of quality, the quality of zirconia-corundum refractory brick to zirconia-corundum refractory brick
Defect can directly affect the quality of glassware, also contribute to the service life of glass furnace.The presentation product of zirconia-corundum refractory brick
Whether matter typically refers to the crackle of product beyond using standard,（Other presentation qualities also have the color of product surface, stomata etc.
Deng）.
The crackle of zirconia-corundum refractory brick is distinguished from major class fire check and cold crack, and slight cold crack is disguised very strong,
But endanger very big, potential safety hazard when being glass furnace operation.Such as zirconia-corundum refractory brick is used for the flow liquid of glass furnace
Hole, all glass metals will pass through dog-hole.Dog-hole front arch is not found if there is disguised very strong cold crack,
It will cave at any time, force glass furnace out of service, construction again is reprocessed, and direct economic loss wants hundreds of thousands at least
Member.
The time that cold crack shows in brick face is different, and some cold cracks are just showed in the firm outlet of brick, some cold cracks
Just show after processing, it is very trickle.Also have several after processing days, can just show after Shi Jitian, or even January.This
It is caused by brick internal stress is not discharged fully.It is hidden in the implosion that the stress not discharged in brick forms brick, one
Trickle cold crack will be gradually shown on brick face in fixing time.It is more fearful when glass furnace is used, cause at any time
Kiln accident occurs.The defective proportion of cold crack in production typically has 3%-5%, how to eliminate Corhart Zac-block cold cracking
Line is those skilled in the art's concern.
The content of the invention
For above-mentioned situation, to overcome the defect of prior art, the purpose of the present invention is just to provide a kind of AZS
Brick is anti-cold to split production method, the problem of can effectively solving Corhart Zac-block cold crack.
The technical scheme that the present invention is solved, which is that a kind of Corhart Zac-block is anti-cold, splits production method, it is characterised in that bag
Include following steps：
（1）Installation mold
Mould includes brick body sand mold and mounted in the upper rising head sand mold of brick body sand casting mouthful, and mould is put into incubator
It is interior, insulation material is filled between the outer wall of mould and the inwall of incubator, the thickness of insulation material is more than 250mm；
（2）Fusing
The Corhart Zac-block raw material prepared is added into electric arc furnaces in two times, each feeding quantity is the one of raw material gross weight
Half, shakeout after feeding for the first time, open electric arc furnaces, melted, be spaced ten minutes second charging, electric arc furnaces each of three electrodes
Three-phase arc voltage is 205-210V, after melting 80-90 minutes, and power-off stops fusing, oxygen blast 3 minutes, and oxygen blast flow is 15m3/h, so
Continue to melt afterwards, the three-phase arc voltage of electric arc furnaces each of three electrodes is 205-210V, and after melting 10 minutes, power-off stops fusing, oxygen blast 3
Minute, oxygen blast flow is 15m3/ h, produces the casting liquid melted, casting liquid temperature degree now reaches more than 2000 DEG C；
（3）Cast molding
The casting liquid melted is poured into mould, casting rate >=28kg/s is gradually annealed to 60 DEG C after the completion of casting
Take out below.
Described step（2）In Corhart Zac-block raw material be by the raw material of percentage by weight meter：Alundum (Al2O3)
（Al2O2）49-52%, silica（SiO2）14-16%, sodium oxide molybdena（Na2O）1.2-1.4%, zirconium oxide（ZrO2）31-35% and oxygen
Change titanium（ZrO2）0.23-0.27% is well mixed what is be made；
Described step（1）In insulation material be granularity 3-5mm silica heat-insulating material；
Described step（2）In electric arc furnaces input current be 3500-4000A, input voltage is 280V-300V；
Described step（2）In the diameter of each of three electrodes of electric arc furnaces be 202mm, electric arc furnaces is commercially available prod（It is existing
There is technology）, such as electric arc furnaces for 5 tons, the 10 tons models that Xi'an Lan Hai metallurgical equipments Co., Ltd produces.
Production method of the present invention is simple, and burn-off rate is fast, and casting liquid viscosity is low, and cast temperature is high, effectively reduces cold
Crackle, long product lifecycle is the innovation in Corhart Zac-block production method.
Brief description of the drawings
The structure sectional view of Fig. 1 incubators of the present invention and mould.
Embodiment
The embodiment of the present invention is described in further detail below in conjunction with drawings and examples.
As shown in figure 1, the Corhart Zac-block is anti-cold to split production method, comprise the following steps：
（1）Installation mold
Mould includes brick body sand mold（1）With the rising head sand mold in brick body sand casting mouthful（2）, mould is put into guarantor
Incubator（4）It is interior, fill insulation material between the outer wall of mould and the inwall of incubator（3）, the thickness of insulation material is 300mm；
Described insulation material is combined siliceous building thermal insulation material for granularity 3-5mm AX-800；
（2）Fusing
The Corhart Zac-block raw material prepared is added into electric arc furnaces in two times, each feeding quantity is the one of raw material gross weight
Half, shakeout after feeding for the first time, open electric arc furnaces, melted, be spaced ten minutes second charging, electric arc furnaces each of three electrodes
Three-phase arc voltage is 208V, after melting 85 minutes, and power-off stops fusing, and oxygen blast 3 minutes, oxygen blast flow is 15m3/h, is then proceeded to
Fusing, the three-phase arc voltage of electric arc furnaces each of three electrodes is 210V, and after melting 10 minutes, power-off stops fusing, oxygen blast 3 minutes, oxygen blast
Flow is 15m3/ h, produces the casting liquid 5 melted, casting liquid temperature degree now reaches more than 2000 DEG C；
Described Corhart Zac-block raw material is by the raw material of percentage by weight meter：Alundum (Al2O3)（Al2O2）50.45%、
Silica（SiO2）15%th, sodium oxide molybdena（Na2O）1.3%th, zirconium oxide（ZrO2）33% and titanium oxide（ZrO2）0.25% is well mixed
It is made；
The input current of described electric arc furnaces is 3500-4000A, and input voltage is 280V-300V；Described electric arc furnaces
The diameter of each of three electrodes is 202mm；
（3）Cast molding
The casting liquid melted is poured into mould, casting rate >=28kg/s is gradually annealed to 60 DEG C after the completion of casting
Take out below.
The present invention makes casting liquid temperature degree be maintained at more than 2000 DEG C, guarantor by the three-phase arc voltage in electric arc furnaces each of three electrodes
Casting liquid temperature degree, so as to ensure that the viscosity of casting liquid, makes casting liquid in liquid all the time more than 1780 DEG C in card casting cycle
State is kept for the sufficiently long time, and complete release is easy in the release of stress in the liquid state, it is ensured that the thorough root of cold crack of control product
Remove, so as to effectively eliminate the cold crack of Corhart Zac-block, through actually should, the electric smelting zirconium produced using the inventive method is firm
Beautiful brick cold crack occurrence rate declines 3-5%, is almost completely eliminated, compared with prior art, and the present invention has advantages below：
1st, cold crack occurrence rate declines 3-5%, it is assumed that have 10000 tons of production capacity every year, then can reduce waste product 100
Ton is to 300 tons, and price per ton is according to 20000 yuan of calculating, then exactly reduce 2,000,000 yuan to 600 yuan ten thousand of loss, economic benefit
Significantly；
2nd, due to having prevented cold crack, the safe operation of glass furnace has reliable guarantee, it is to avoid fused cast refractories this
The glass furnace accident that defect is caused.
Claims (5)
1. a kind of Corhart Zac-block is anti-cold to split production method, it is characterised in that comprise the following steps：
(1) installation mold
Mould includes brick body sand mold (1) and the rising head sand mold (2) in brick body sand casting mouthful, and mould is put into incubator
(4) in, insulation material (3) is filled between the outer wall of mould and the inwall of incubator, the thickness of insulation material is more than 250mm；
(2) melt
The Corhart Zac-block raw material prepared is added into electric arc furnaces in two times, each feeding quantity is the half of raw material gross weight,
Shakeout after feeding for the first time, open electric arc furnaces, melted, be spaced ten minutes second charging, the three of electric arc furnaces each of three electrodes
Phase arc voltage is 205-210V, after melting 80-90 minutes, and power-off stops fusing, oxygen blast 3 minutes, and oxygen blast flow is 15m3/ h, then
Continue to melt, the three-phase arc voltage of electric arc furnaces each of three electrodes is 205-210V, and after melting 10 minutes, power-off stops fusing, 3 points of oxygen blast
Clock, oxygen blast flow is 15m3/ h, produces the casting liquid melted；
(3) cast molding
The casting liquid melted is poured into mould, casting rate >=28kg/s is gradually annealed to less than 60 DEG C after the completion of casting
Taking-up；
Corhart Zac-block raw material in described step (2) is by the raw material of percentage by weight meter：Alundum (Al2O3) (Al2O3)
49-52%, silica (SiO2) 14-16%, sodium oxide molybdena (Na2O) 1.2-1.4%, zirconium oxide (ZrO2) 31-35% and oxidation
Titanium (TiO2) 0.23-0.27% is well mixed is made.
2. Corhart Zac-block according to claim 1 is anti-cold to split production method, it is characterised in that described step (1)
In insulation material be granularity 3-5mm silica heat-insulating material.
3. Corhart Zac-block according to claim 1 is anti-cold to split production method, it is characterised in that described step (2)
In electric arc furnaces input current be 3500-4000A, input voltage is 280V-300V.
4. Corhart Zac-block according to claim 1 is anti-cold to split production method, it is characterised in that described step (2)
In the diameter of each of three electrodes of electric arc furnaces be 202mm.
5. Corhart Zac-block according to claim 1 is anti-cold to split production method, it is characterised in that comprise the following steps：
(1) installation mold
Mould includes brick body sand mold (1) and the rising head sand mold (2) in brick body sand casting mouthful, and mould is put into incubator
(4) in, insulation material (3) is filled between the outer wall of mould and the inwall of incubator, the thickness of insulation material is 300mm；It is described
Insulation material be granularity 3-5mm silica heat-insulating material；
(2) melt
The Corhart Zac-block raw material prepared is added into electric arc furnaces in two times, each feeding quantity is the half of raw material gross weight,
Shakeout after feeding for the first time, open electric arc furnaces, melted, be spaced ten minutes second charging, the three of electric arc furnaces each of three electrodes
Phase arc voltage is 208V, after melting 85 minutes, and power-off stops fusing, oxygen blast 3 minutes, and oxygen blast flow is 15m3/ h, then proceedes to melt
Change, the three-phase arc voltage of electric arc furnaces each of three electrodes is 210V, and after melting 10 minutes, power-off stops fusing, oxygen blast 3 minutes, oxygen blast stream
Measure as 15m3/ h, produces the casting liquid melted；
Described Corhart Zac-block raw material is by the raw material of percentage by weight meter：Alundum (Al2O3) (Al2O2) 50.45%, dioxy
SiClx (SiO2) 15%, sodium oxide molybdena (Na2O) 1.3%, zirconium oxide (ZrO2) 33% and titanium oxide (ZrO2) 0.25% be well mixed
It is made；
The input current of described electric arc furnaces is 3500-4000A, and input voltage is 280V-300V；Three of described electric arc furnaces
The diameter of electrode is 202mm；
(3) cast molding
The casting liquid melted is poured into mould, casting rate >=28kg/s is gradually annealed to less than 60 DEG C after the completion of casting
Taking-up.
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107266089A (en) * | 2017-06-27 | 2017-10-20 | 江苏徐耐新材料科技股份有限公司 | A kind of production method of the AZS of anti-deformation |
| CN107759237A (en) * | 2017-10-12 | 2018-03-06 | 徐州东鹏工具制造有限公司 | A kind of hot-working method of AZS |
| CN108046799A (en) * | 2018-01-03 | 2018-05-18 | 河南省豫华电熔科技有限公司 | A kind of production technology with capacitance method production fused alumina zirconia ball |
| CN113400446A (en) * | 2021-06-10 | 2021-09-17 | 安徽中材新材料科技有限公司 | Preparation method of composite sand mold for casting fused AZS pool wall bricks |
| CN114635070B (en) * | 2022-02-21 | 2022-08-30 | 杭州永磁集团有限公司 | Preparation method of high-toughness alnico magnetic steel |
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| CN1322696A (en) * | 2001-07-03 | 2001-11-21 | 郑州东方企业(集团)股份有限公司 | Zircon corundum product produced by mixing high-purity material and secondary cast material and its production process |
| CN1418833A (en) * | 2001-11-14 | 2003-05-21 | 郑州振中电熔锆业有限公司 | Founding casting non-oxidate containing plate shape material compound zirconium boule refractory brick and production method thereof |
| CN1483701A (en) * | 2003-05-09 | 2004-03-24 | 郑州大学 | Method for preparing alumine base electric fused zirconium corundum |
| CN1693275A (en) * | 2005-05-16 | 2005-11-09 | 侯松发 | Process for producing electric smelting zirconium corundum 33#, 36#, 41# products by secondary casting |
| CN102731122A (en) * | 2012-07-12 | 2012-10-17 | 郑州远东耐火材料有限公司 | Production method of electro-fused zirconia-corundum bowl brick |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1322696A (en) * | 2001-07-03 | 2001-11-21 | 郑州东方企业(集团)股份有限公司 | Zircon corundum product produced by mixing high-purity material and secondary cast material and its production process |
| CN1418833A (en) * | 2001-11-14 | 2003-05-21 | 郑州振中电熔锆业有限公司 | Founding casting non-oxidate containing plate shape material compound zirconium boule refractory brick and production method thereof |
| CN1483701A (en) * | 2003-05-09 | 2004-03-24 | 郑州大学 | Method for preparing alumine base electric fused zirconium corundum |
| CN1693275A (en) * | 2005-05-16 | 2005-11-09 | 侯松发 | Process for producing electric smelting zirconium corundum 33#, 36#, 41# products by secondary casting |
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