CN103626505B - Andalusite push plate and preparation method - Google Patents
Andalusite push plate and preparation method Download PDFInfo
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- CN103626505B CN103626505B CN201310639428.6A CN201310639428A CN103626505B CN 103626505 B CN103626505 B CN 103626505B CN 201310639428 A CN201310639428 A CN 201310639428A CN 103626505 B CN103626505 B CN 103626505B
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- andalusite
- alumina powder
- andaluzite
- push plate
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Abstract
The invention relates to a high-temperature andalusite push plate and a preparation method. The preparation method comprises the following steps: sintering andalusite, white corundum, mullite, alumina micro powder and kaolin are used as main raw materials, and according to different weight percentage, the high-temperature andalusite push plate is prepared by sequentially performing mixing, ageing mixture, formation, drying and high-temperature sintering on the main raw materials. The high-temperature andalusite push plate overcomes the defects that the existing push plate has shorter service life, poor stability and low rupture strength, has the advantages of low apparent porosity, high rupture strength, fewer impurities and long service life, and can be recycled for more than 98 times at higher temperature.
Description
Technical field
The invention belongs to technical field of fire-resistant material preparation, a kind of High-temperature andalusite push plate of main proposition and preparation method.
Background technology
Push pedal is transportable dividing plate, is often used to prepare in refractory materials, is particularly widely used in utilizing pushed bat kiln to carry out the kiln goods of need of production high-temperature calcination.Pushed bat kiln, a kind of continous way heat-agglomerating equipment, according to the processing requirement of sintered products, warm area needed for layout and power, directly or indirectly be placed in the push pedal of high temperature resistant, abrasion-resistant need the product of sintering, by the processing requirement of propulsion system according to product, the product be placed in push pedal is moved, in burner hearth, complete the sintering process of product.Complete push pedal in this process often all will by the impact of the high temperature of about 1400 DEG C, various atmosphere and temperature instantaneous variation, therefore very strict to the requirement of push pedal quality.
And the push pedals such as the High-Alumina of domestic production, silicon carbide and cordierite are all difficult to meet the requirement of push-plate type high temperature kiln for temperature, folding strength, work-ing life and high chemical stability etc.It 30 days is only gross distortion that High-Alumina push pedal uses on high temperature kiln.Silicon carbide has oxidizable feature, and oxidation rear surface generates SiO
2, free SiO
2existence, badly influence use temperature and the high-temperature behavior of goods.Cordierite push pedal due to the generation temperature of trichroite and decomposition temperature comparatively close, in lower temperature, cordierite content is less, improving firing temperature can cause again glassy phase to generate in a large number, directly have influence on the creep resistance of goods, therefore trichroite push pedal is only applicable to moderate oven (temperature≤1200 DEG C).What generally adopt at present is all high temperature resistant mullite-corundum push slab, but due to the select permeability of raw material, some causes the work-ing life of product lower and poor stability, and folding strength is not ideal enough occurs phenomenon of rupture, and shrinks to some extent under long-term high-temperature calcination.
Summary of the invention
The object of the invention is to overcome above-mentioned push pedal not long for work-ing life, can not high-temperature calcination, the lower defect that can shrink to some extent of calcining, provides that a kind of production cost is low, High anti bending strength, long service life, the high temperature High-temperature andalusite push plate that productivity effect is high and preparation method.
For realizing object of the present invention, the technical scheme adopted is: a kind of High-temperature andalusite push plate, and it is prepared primarily of the raw material of following weight percent:
Andaluzite particle 35% ~ 50%
White fused alumina powder 22% ~ 34%
Electrofused mullite powder 6% ~ 23%
Alumina powder 7.8% ~ 12%
Kaolin 3.2% ~ 6.8%
Additional bonding agent 0.01% ~ 0.07%
Preferably, additional bonding agent is the one in sodium carboxymethylcellulose pyce, polyvinyl alcohol, maltodextrin.
Preferably, Al in the material composition of andaluzite is prepared
2o
3weight percentage is about 75%, SiO
2weight percentage is about 24.5%.
Preferably, in andaluzite particle, the andaluzite particle weight ratio of particle diameter to be 1mm andaluzite particle and particle diameter be 0.25mm is about 9:1, and is produced from preferred South Africa.
Preferably, in white fused alumina powder, the white fused alumina powder weight ratio of particle diameter to be the white fused alumina powder of 0.25mm and particle diameter be 0.075mm is about 2.5:1, and is produced from preferred South Africa.
Preferably, electrofused mullite powder selects particle diameter to be 0.045mm's.
Preferably, kaolin No. 2, preferred Suzhou kaolin.
A preparation method for High-temperature andalusite push plate, comprises following processing step:
(1) feed composition is put into vertical stainless steel stirrer according to Different Weight per-cent to stir 15min and mix.Need before batch mixing respectively by alumina powder and No. 2, Suzhou kaolin, add 20% water with the ball milling bucket of 95 ceramic liners, ball milling about 24h is to reaching Nano grade.On selecting materials, need to select high-purity raw, the high purity andaluzite that South Africa produces will be selected especially.
(2) horizontal auger machine will be placed in through step (1) mixed uniformly raw material to extrude, stack ageing mixture under normal temperature 10 days;
(3) will through the 500 tons of press coldmouldings of the material of step (2), seasoning.
(4) high temperature pusher formula oil kiln that will be long through the material 16m that step (3) is dry, through the temperature calcination of 1550 DEG C ~ 1580 DEG C, is incubated 6 ~ 8 hours, obtains High-temperature andalusite push plate.
Beneficial features of the present invention is: (1) the present invention adopts andaluzite to be main raw material, because andaluzite is heated to after 1350 DEG C at ambient pressure, start to change into acicular mullite, change in the process of mullite at andaluzite, good mullite network can be formed, volumetric expansion is about 4%, this is a kind of irreversible crystal transformation, Once transformed, then have higher fire performance, refractoriness can reach more than 1800 DEG C, and has high chemical stability and extremely strong resistance to chemical corrosion.And utilize andaluzite at high temperature to expand stable feature, the phenomenon that corundum-mullite refractory materials shrinks in high-temperature calcination lower volume can be eliminated, extend the work-ing life of material.
(2) the present invention selects South Africa to produce andaluzite is raw material, and starting material aluminum content is high, and impurity is few, overcomes general andaluzite iron-holder high, to the shortcoming that the quality of magneticsubstance works the mischief.
(3) the present invention is before mixing raw material, needs alumina powder, Kaolin of Suzhou to be milled to nano particle, product can be made to reduce void content, strengthen the folding strength of High-temperature andalusite push plate.
Adopt the High-temperature andalusite push plate that method of the present invention manufactures, detect and user's use through Changxing Quality and Technology Supervision & Inspection Center, its technical indicator and use properties are as following table:
Embodiment
Below in conjunction with specific embodiment, the present invention is further illustrated, but the present invention is not only confined to following specific embodiment.
Embodiment 1
By weight percent be:
Andaluzite particle 36%, wherein the andaluzite particle 32.4% of 1mm and the andaluzite powder 3.6% of 0.25mm
White fused alumina powder 25%, wherein the white fused alumina powder 18% of 0.25mm and the white fused alumina powder 7% of 0.075mm
Electrofused mullite powder 23%
Alumina powder 12%
No. 2, Suzhou kaolin 4%
The sodium carboxymethylcellulose pyce of additional 0.05% is as bonding agent, and processing step is as follows:
Above-mentioned raw materials component is stirred in vertical stainless steel stirrer according to weight percent, then put into horizontal flood dragon machine to extrude, under normal temperature, ageing mixture stacks use in 10 days, through 500 tons of press coldmouldings, calcine at 1550 DEG C with the high temperature pusher oil kiln that 16m is long after seasoning, and be incubated 8 hours.
Embodiment 2
By weight percent be:
Andaluzite particle 44%, wherein the andaluzite particle 39.6% of 1mm and the andaluzite powder 4.4% of 0.25mm
White fused alumina powder 34%, wherein the white fused alumina powder 24% of 0.25mm and the white fused alumina powder 10% of 0.075mm
Electrofused mullite powder 8%
Alumina powder 8%
No. 2, Suzhou kaolin 6%
The polyvinyl alcohol of additional 0.03% is as bonding agent, and processing step is as follows:
Above-mentioned raw materials component is stirred in vertical stainless steel stirrer according to weight percent, then put into horizontal flood dragon machine to extrude, under normal temperature, ageing mixture stacks use in 10 days, through 500 tons of press coldmouldings, calcine at 1560 DEG C with the high temperature pusher oil kiln that 16m is long after seasoning, and be incubated 7 hours.
Embodiment 3
By weight percent be:
Andaluzite particle 50%, wherein the andaluzite particle 45% of 1mm and the andaluzite powder 5% of 0.25mm
White fused alumina powder 22%, wherein the white fused alumina powder 24% of 0.25mm and the white fused alumina powder 10% of 0.075mm
Electrofused mullite powder 15%
Alumina powder 8%
No. 2, Suzhou kaolin 5%
The maltodextrin of additional 0.07% is as bonding agent, and processing step is as follows:
Above-mentioned raw materials component is stirred in vertical stainless steel stirrer according to weight percent, then put into horizontal flood dragon machine to extrude, under normal temperature, ageing mixture stacks use in 10 days, through 500 tons of press coldmouldings, calcine at 1580 DEG C with the high temperature pusher oil kiln that 16m is long after seasoning, and be incubated 6 hours.
Claims (2)
1. a High-temperature andalusite push plate, is characterized in that: it is prepared from primarily of the raw material of following weight percent:
Andaluzite particle 35% ~ 50%
White fused alumina powder 22% ~ 34%
Electrofused mullite powder 6% ~ 23%
Alumina powder 7.8% ~ 12%
Kaolin 3.2% ~ 6.8%
Additional bonding agent 0.01% ~ 0.07%,
Described additional bonding agent is the one in sodium carboxymethylcellulose pyce, polyvinyl alcohol, maltodextrin, and described prepares Al in the material composition of andaluzite
2o
3weight percentage is 75%, SiO
2weight percentage is 24.5%,
In described andaluzite particle, the andaluzite weight ratio of particle diameter to be the andaluzite particle of 1mm and particle diameter be 0.25mm is 9:1, and in described white fused alumina powder, the white fused alumina powder weight ratio of particle diameter to be the white fused alumina powder of 0.25mm and particle diameter be 0.075mm is 2.5: 1.
2. according to a preparation method for the High-temperature andalusite push plate described in claim 1, it is characterized in that: comprise following processing step:
(1) need respectively alumina powder and kaolin to be milled to Nano grade before batch mixing;
(2) feed composition is put into stirrer for mixing according to Different Weight per-cent even;
(3) auger machine will be placed in through step (2) mixed uniformly raw material to extrude, stack ageing mixture;
(4) will through the material coldmoulding of step (3), seasoning;
(5) through the material of step (4) drying through the temperature calcination of 1550 DEG C ~ 1580 DEG C, 6 ~ 8 hours will be incubated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310639428.6A CN103626505B (en) | 2013-12-04 | 2013-12-04 | Andalusite push plate and preparation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310639428.6A CN103626505B (en) | 2013-12-04 | 2013-12-04 | Andalusite push plate and preparation method |
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| CN103626505A CN103626505A (en) | 2014-03-12 |
| CN103626505B true CN103626505B (en) | 2015-06-03 |
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| CN201310639428.6A Expired - Fee Related CN103626505B (en) | 2013-12-04 | 2013-12-04 | Andalusite push plate and preparation method |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105084879A (en) * | 2015-09-15 | 2015-11-25 | 山东硅元新型材料有限责任公司 | Launder and preparation method thereof |
| CN107098713A (en) * | 2017-06-12 | 2017-08-29 | 合肥铭佑高温技术有限公司 | A kind of exotic material and preparation method for magnetic core |
| CN108218444A (en) * | 2017-12-24 | 2018-06-29 | 万燕杰 | A kind of toughening saggar of andalusite containing zirconium and preparation method |
| CN108069708A (en) * | 2017-12-24 | 2018-05-25 | 万燕杰 | A kind of high thermal shock long-life saggar and preparation method |
| CN108558416A (en) * | 2017-12-24 | 2018-09-21 | 万燕杰 | A kind of ceramic firing kiln furnitures and preparation method |
| CN108083822A (en) * | 2017-12-24 | 2018-05-29 | 万燕杰 | A kind of push plate and preparation method |
| CN108218445A (en) * | 2017-12-24 | 2018-06-29 | 万燕杰 | A kind of andalusite sillimanite saggar and preparation method |
| CN108083821A (en) * | 2017-12-24 | 2018-05-29 | 万燕杰 | A kind of ceramics saggar and preparation method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1733653A (en) * | 2005-07-11 | 2006-02-15 | 徐生富 | Fireproof material |
| CN1872796A (en) * | 2006-06-23 | 2006-12-06 | 浙江大学 | Method for producing kiln furniture product of andalusite |
| CN101456748A (en) * | 2008-11-27 | 2009-06-17 | 中钢集团洛阳耐火材料研究院有限公司 | Pushing plate for soft magnetic ferrite sintering kiln and method for producing the same |
| CN101830717A (en) * | 2010-05-11 | 2010-09-15 | 浙江大学 | Zirconium sol reinforced corundum-mullite product and production method thereof |
| CN101935222A (en) * | 2010-08-24 | 2011-01-05 | 中钢集团洛阳耐火材料研究院有限公司 | High-temperature corundum-porzite pushing plate and manufacture method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003194469A (en) * | 2001-12-27 | 2003-07-09 | Tokai Konetsu Kogyo Co Ltd | Baseplate for pusher type tunnel furnace |
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- 2013-12-04 CN CN201310639428.6A patent/CN103626505B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1733653A (en) * | 2005-07-11 | 2006-02-15 | 徐生富 | Fireproof material |
| CN1872796A (en) * | 2006-06-23 | 2006-12-06 | 浙江大学 | Method for producing kiln furniture product of andalusite |
| CN101456748A (en) * | 2008-11-27 | 2009-06-17 | 中钢集团洛阳耐火材料研究院有限公司 | Pushing plate for soft magnetic ferrite sintering kiln and method for producing the same |
| CN101830717A (en) * | 2010-05-11 | 2010-09-15 | 浙江大学 | Zirconium sol reinforced corundum-mullite product and production method thereof |
| CN101935222A (en) * | 2010-08-24 | 2011-01-05 | 中钢集团洛阳耐火材料研究院有限公司 | High-temperature corundum-porzite pushing plate and manufacture method thereof |
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| CN103626505A (en) | 2014-03-12 |
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