CN107698247A - A kind of ferrosilicon bag half lightweight siliceous mullite brick and preparation method thereof - Google Patents

A kind of ferrosilicon bag half lightweight siliceous mullite brick and preparation method thereof Download PDF

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CN107698247A
CN107698247A CN201711051697.5A CN201711051697A CN107698247A CN 107698247 A CN107698247 A CN 107698247A CN 201711051697 A CN201711051697 A CN 201711051697A CN 107698247 A CN107698247 A CN 107698247A
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parts
ferrosilicon
weight
bag
content
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闫承华
闫祖宁
曹宏光
闫业玉
刘丽君
李海君
闫祖渊
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Xiaoyi Hezhongxing Mineral Product Co Ltd http //wwwzghydycom/mla/63005html
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Xiaoyi Hezhongxing Mineral Product Co Ltd http //wwwzghydycom/mla/63005html
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Abstract

The invention belongs to technical field of refractory materials, more particularly to a kind of ferrosilicon bag half lightweight siliceous mullite brick and preparation method thereof.Mainly solve that thermal conductivity factor existing for existing ferrosilicon bag high-alumina brick is higher, technical problem of poor thermal insulation property.The technical scheme is that：A kind of half lightweight siliceous mullite brick of ferrosilicon bag, it is formulated by the raw material of following weight parts：60~80 parts of bauxite chamotte, 2~5 parts of alumine raw material, 3~8 parts of andalusite fine powder, 4~7 parts of carbide fine powder, 2~6 parts of Suzhou soil, 3~10 parts of alumina hollow ball, 1~3 part of silicon powder, 3.5~6 parts of Ludox.A kind of ferrosilicon bag preparation method of half lightweight siliceous mullite brick, comprises the following steps：1) grind, be broken；2) raw material mixed grind；3) it is molded base；4) dry；5) high-temperature firing；6) cooling, finished product.The present invention has the advantages that cost is low, heat-resistant knocking stability energy is excellent, thermal conductivity factor is low, the thermal efficiency is high.

Description

A kind of ferrosilicon bag half lightweight siliceous mullite brick and preparation method thereof
Technical field
The invention belongs to technical field of refractory materials, more particularly to a kind of ferrosilicon bag half lightweight siliceous mullite brick and its preparation side Method.
Background technology
With the fast development of China's ferroalloy industry, the mineral hot furnace for ferroalloy production is in recent years in maximization, intelligence Energyization etc. makes great progress.And the Antaciron ferrosilicon bag working layer used that taps a blast furnace generally uses high-alumina brick, its Resist acid slag and Molten Ferroalloys erosiveness is general；Thermal conductivity factor is higher, poor thermal insulation property, thus can cause ferrosilicon Bao Yun Thermal loss is larger during row；Heat-resistant knocking stability can deficiency, cause to damage extremely during use heavier.Undertaken to perform work within a time limit and according to specifications in ferrosilicon Make huge room for promotion be present in terms of layer material.
The content of the invention
The shortcomings that it is an object of the invention to overcome prior art, there is provided a kind of ferrosilicon bag half lightweight siliceous mullite brick and its system Preparation Method, solves that thermal conductivity factor existing for existing ferrosilicon bag high-alumina brick is higher, technical problem of poor thermal insulation property.
The present invention is achieved by the following technical solutions：
A kind of half lightweight siliceous mullite brick of ferrosilicon bag, it is formulated by the raw material of following weight parts：Bauxite chamotte 60 ~80 parts, 2~5 parts of alumine raw material, 3~8 parts of andalusite fine powder, 4~7 parts of carbide fine powder, 2~6 parts of Suzhou soil, oxidation 3~10 parts of aluminium hollow ball, 1~3 part of silicon powder, 3.5~6 parts of Ludox.
Further, Al in the alumina hollow ball2O3Content >=99.0%, Fe2O3Content≤0.15%, SiO2's Content≤0.2%；The bulk density 0.5-1g/cm of alumina hollow ball particle3, particle size range 0.1-0.5mm；The silicon powder Middle SiO2Content >=97%, granularity≤1 μm；Graininess in the silicon powder is high activity amorphous state.
A kind of ferrosilicon bag preparation method of half lightweight siliceous mullite brick, comprises the following steps：
1) grind, be broken：By the 40% of bauxite chamotte that parts by weight are 60~80 parts, height that parts by weight are 2~5 parts Granularity is ground in bauxite raw material addition grinder and is less than 0.088mm, and powder is made after the completion of grinding；By parts by weight be 60~ It is 1~3mm that the 60% of 80 parts of bauxite chamotte, which is crushed to particle diameter, and particles of aggregates is made；
2) raw material mixed grind：Particles of aggregates in step 1) is added in kolleroang after carrying out dry-mixed 2~3min, by 3.5~6 The Ludox of part, which adds, carries out wet mixing 5min in kolleroang, then add obtained powder in step 1), parts by weight are 3~8 parts Andalusite fine powder, the carbide fine powder that parts by weight are 4~7 parts, the Suzhou soil that parts by weight are 2~6 parts, parts by weight be 3~10 The alumina hollow ball and parts by weight of part are 1~3 part of silicon powder, are discharged after 15~20min of wet mixing, batch mixing is made；
3) it is molded base：Batch mixing in step 2) is added in friction press, adobe is made under 100Mpa pressure；
4) dry：Obtained adobe in step 3) is put into 50~70 DEG C of drying oven and dries 24~48h, brick after drying Moisture≤1% of base；
5) high-temperature firing：Put it into 1200~1250 DEG C of kiln and fire 3~5 hours after the completion of drying, Ran Houzhuan 5~8h is fired into 1400~1430 DEG C of kilns；
6) cooling, finished product：Room temperature is furnace-cooled to after firing and can be prepared by ferrosilicon bag with half lightweight siliceous mullite brick finished product.
Further, Al in the alumina hollow ball2O3Content >=99.0%, Fe2O3Content≤0.15%, SiO2's Content≤0.2%；The bulk density 0.5-1g/cm of alumina hollow ball particle3, particle size range 0.1-0.5mm；The silicon powder Middle SiO2Content >=97%, granularity≤1 μm；Graininess in the silicon powder is high activity amorphous state.
Suzhou soil of the present invention is soft clay, and it has good plasticity, associativity, can be in the present invention There is provided good binding ability and low-temperature sintering performance, the conversion process of mullite when promoting low temperature, medium temperature；The present invention's is antiacid Property molten metal or aluminium alloy erosion performance is strong, heat-resistant knocking stability can it is excellent, thermal conductivity factor is low, the thermal efficiency is high, Er Qiecai Expect that cost is relatively low.Compared with existing ferrosilicon bag high-alumina brick, cost slightly reduces, energy-conservation more than 20%, and service life improves More than 50%.
Therefore, compared with background technology, secondary crystalline phase of the invention is carborundum, a small amount of quartzy, a small amount of vagcor phase, Microcellular structure rationally, be evenly distributed, have that cost is low, the erosion performance of acid-resisting molten metal or aluminium alloy is strong, anti-thermal shock is steady Determine the advantages that excellent performance, thermal conductivity factor are low, the thermal efficiency is high.
Embodiment
Technical scheme is clearly and completely described below in conjunction with embodiment.
Embodiment 1
A kind of half lightweight siliceous mullite brick of ferrosilicon bag in the present embodiment, it is formulated by the raw material of following weight parts：It is high 60 parts of bauxite, 2 parts of alumine raw material, 3 parts of andalusite fine powder, 4 parts of carbide fine powder, 2 parts of Suzhou soil, aluminum oxide are empty 3 parts of bulbus cordis, 1 part of silicon powder, 3.5 parts of Ludox.
A kind of ferrosilicon bag preparation method of half lightweight siliceous mullite brick, comprises the following steps：
1) grind, be broken：By the 40% of bauxite chamotte that parts by weight the are 60 parts, alumine that parts by weight are 2 parts Granularity is ground in raw material addition grinder and is less than 0.088mm, and powder is made after the completion of grinding；By the high alumina that parts by weight are 60 parts It is 1~3mm that the 60% of bauxite clinker, which is crushed to particle diameter, and particles of aggregates is made；
2) raw material mixed grind：Particles of aggregates in step 1) is added in kolleroang after carrying out dry-mixed 2~3min, by 3.5 parts Ludox add wet mixing 5min carried out in kolleroang, then add obtained powder in step 1), parts by weight are 3 parts of red post Carbide fine powder that stone fine powder, parts by weight are 4 parts, the Suzhou soil that parts by weight are 2 parts, the alumina hollow ball that parts by weight are 3 parts It is 1 part of silicon powder with parts by weight, is discharged after 15~20min of wet mixing, batch mixing is made；
3) it is molded base：Batch mixing in step 2) is added in friction press, adobe is made under 100Mpa pressure；
4) dry：Obtained adobe in step 3) is put into 50~70 DEG C of drying oven and dries 24~48h, brick after drying Moisture≤1% of base；
5) high-temperature firing：Put it into 1200~1250 DEG C of kiln and fire 3~5 hours after the completion of drying, Ran Houzhuan 5~8h is fired into 1400~1430 DEG C of kilns；
6) cooling, finished product：Room temperature is furnace-cooled to after firing and can be prepared by ferrosilicon bag with half lightweight siliceous mullite brick finished product.
Al in the alumina hollow ball2O3Content >=99.0%, Fe2O3Content≤0.15%, SiO2Content≤ 0.2%；The bulk density 0.5-1g/cm of alumina hollow ball particle3, particle size range 0.1-0.5mm；SiO in the silicon powder2 Content >=97%, granularity≤1 μm；Graininess in the silicon powder is high activity amorphous state.
Embodiment 2
A kind of half lightweight siliceous mullite brick of ferrosilicon bag in the present embodiment, it is formulated by the raw material of following weight parts：It is high 80 parts of bauxite, 5 parts of alumine raw material, 8 parts of andalusite fine powder, 7 parts of carbide fine powder, 6 parts of Suzhou soil, aluminum oxide are empty 10 parts of bulbus cordis, 3 parts of silicon powder, 6 parts of Ludox.
A kind of ferrosilicon bag preparation method of half lightweight siliceous mullite brick, comprises the following steps：
1) grind, be broken：By the 40% of bauxite chamotte that parts by weight the are 80 parts, alumine that parts by weight are 5 parts Granularity is ground in raw material addition grinder and is less than 0.088mm, and powder is made after the completion of grinding；By the high alumina that parts by weight are 80 parts It is 1~3mm that the 60% of bauxite clinker, which is crushed to particle diameter, and particles of aggregates is made；
2) raw material mixed grind：Particles of aggregates in step 1) is added in kolleroang after carrying out dry-mixed 2~3min, by 6 parts Ludox, which adds, carries out wet mixing 5min in kolleroang, then add obtained powder in step 1), the andalusite that parts by weight are 8 parts Carbide fine powder that fine powder, parts by weight are 7 parts, the Suzhou soil that parts by weight are 6 parts, the alumina hollow ball that parts by weight are 10 parts and Parts by weight are 3 parts of silicon powder, are discharged after 15~20min of wet mixing, and batch mixing is made；
3) it is molded base：Batch mixing in step 2) is added in friction press, adobe is made under 100Mpa pressure；
4) dry：Obtained adobe in step 3) is put into 50~70 DEG C of drying oven and dries 24~48h, brick after drying Moisture≤1% of base；
5) high-temperature firing：Put it into 1200~1250 DEG C of kiln and fire 3~5 hours after the completion of drying, Ran Houzhuan 5~8h is fired into 1400~1430 DEG C of kilns；
6) cooling, finished product：Room temperature is furnace-cooled to after firing and can be prepared by ferrosilicon bag with half lightweight siliceous mullite brick finished product.
Al in the alumina hollow ball2O3Content >=99.0%, Fe2O3Content≤0.15%, SiO2Content≤ 0.2%；The bulk density 0.5-1g/cm of alumina hollow ball particle3, particle size range 0.1-0.5mm；SiO in the silicon powder2 Content >=97%, granularity≤1 μm；Graininess in the silicon powder is high activity amorphous state.
Embodiment 3
A kind of half lightweight siliceous mullite brick of ferrosilicon bag in the present embodiment, it is formulated by the raw material of following weight parts：It is high 70 parts of bauxite, 4 parts of alumine raw material, 5 parts of andalusite fine powder, 6 parts of carbide fine powder, 5 parts of Suzhou soil, aluminum oxide are empty 7 parts of bulbus cordis, 2 parts of silicon powder, 5 parts of Ludox.
A kind of ferrosilicon bag preparation method of half lightweight siliceous mullite brick, comprises the following steps：
1) grind, be broken：By the 40% of bauxite chamotte that parts by weight the are 70 parts, alumine that parts by weight are 4 parts Granularity is ground in raw material addition grinder and is less than 0.088mm, and powder is made after the completion of grinding；By the high alumina that parts by weight are 70 parts It is 1~3mm that the 60% of bauxite clinker, which is crushed to particle diameter, and particles of aggregates is made；
2) raw material mixed grind：Particles of aggregates in step 1) is added in kolleroang after carrying out dry-mixed 2~3min, by 5 parts Ludox, which adds, carries out wet mixing 5min in kolleroang, then add obtained powder in step 1), the andalusite that parts by weight are 5 parts Carbide fine powder that fine powder, parts by weight are 6 parts, the Suzhou soil that parts by weight are 5 parts, the alumina hollow ball that parts by weight are 7 parts and Parts by weight are 2 parts of silicon powder, are discharged after 15~20min of wet mixing, and batch mixing is made；
3) it is molded base：Batch mixing in step 2) is added in friction press, adobe is made under 100Mpa pressure；
4) dry：Obtained adobe in step 3) is put into 50~70 DEG C of drying oven and dries 24~48h, brick after drying Moisture≤1% of base；
5) high-temperature firing：Put it into 1200~1250 DEG C of kiln and fire 3~5 hours after the completion of drying, Ran Houzhuan 5~8h is fired into 1400~1430 DEG C of kilns；
6) cooling, finished product：Room temperature is furnace-cooled to after firing and can be prepared by ferrosilicon bag with half lightweight siliceous mullite brick finished product.
Al in the alumina hollow ball2O3Content >=99.0%, Fe2O3Content≤0.15%, SiO2Content≤ 0.2%；The bulk density 0.5-1g/cm of alumina hollow ball particle3, particle size range 0.1-0.5mm；SiO in the silicon powder2 Content >=97%, granularity≤1 μm；Graininess in the silicon powder is high activity amorphous state.
The present invention can be embodied without departing from the spiritual or substantive of invention in a variety of forms, it should therefore be appreciated that on State embodiment and be not limited to foregoing details, and should widely be explained in the range of claim limits, therefore fall into right and want Ask or the change in its equivalent scope and remodeling all should be claim and covered.

Claims (4)

  1. A kind of 1. half lightweight siliceous mullite brick of ferrosilicon bag, it is characterised in that：It is formulated by the raw material of following weight parts：High alumina alum Native 60~80 parts of clinker, 2~5 parts of alumine raw material, 3~8 parts of andalusite fine powder, 4~7 parts of carbide fine powder, Suzhou soil 2~ 6 parts, 3~10 parts of alumina hollow ball, 1~3 part of silicon powder, 3.5~6 parts of Ludox.
  2. 2. half lightweight siliceous mullite brick of ferrosilicon bag according to claim 1, it is characterised in that：In the alumina hollow ball Al2O3Content >=99.0%, Fe2O3Content≤0.15%, SiO2Content≤0.2%；The heap of alumina hollow ball particle Product density 0.5-1g/cm3, particle size range 0.1-0.5mm；SiO in the silicon powder2Content >=97%, granularity≤1 μm；It is described Graininess in silicon powder is high activity amorphous state.
  3. A kind of 3. bag of ferrosilicon as defined in claim 1 preparation method of half lightweight siliceous mullite brick, it is characterised in that：Including Following steps：
    1) grind, be broken：By the 40% of bauxite chamotte that parts by weight are 60~80 parts, the high alumina alum that parts by weight are 2~5 parts Granularity is ground in autochthonal material addition grinder and is less than 0.088mm, and powder is made after the completion of grinding；It it is 60~80 parts by parts by weight Bauxite chamotte 60% to be crushed to particle diameter be 1~3mm, particles of aggregates is made；
    2) raw material mixed grind：Particles of aggregates in step 1) is added in kolleroang after carrying out dry-mixed 2~3min, by 3.5~6 parts Ludox, which adds, carries out wet mixing 5min in kolleroang, then add obtained powder in step 1), parts by weight are 3~8 parts red Carbide fine powder that pillar fine powder, parts by weight are 4~7 parts, the Suzhou soil that parts by weight are 2~6 parts, parts by weight are 3~10 parts Alumina hollow ball and parts by weight are 1~3 part of silicon powder, are discharged after 15~20min of wet mixing, and batch mixing is made；
    3) it is molded base：Batch mixing in step 2) is added in friction press, adobe is made under 100Mpa pressure；
    4) dry：Obtained adobe in step 3) is put into 50~70 DEG C of drying oven and dries 24~48h, adobe after drying Moisture≤1%；
    5) high-temperature firing：Put it into 1200~1250 DEG C of kiln and fire 3~5 hours after the completion of drying, then go to 5~8h is fired in 1400~1430 DEG C of kiln；
    6) cooling, finished product：Room temperature is furnace-cooled to after firing and can be prepared by ferrosilicon bag with half lightweight siliceous mullite brick finished product.
  4. 4. the ferrosilicon bag according to claim 3 preparation method of half lightweight siliceous mullite brick, it is characterised in that：The aluminum oxide Al in hollow ball2O3Content >=99.0%, Fe2O3Content≤0.15%, SiO2Content≤0.2%；Alumina hollow ball The bulk density 0.5-1g/cm of particle3, particle size range 0.1-0.5mm；SiO in the silicon powder2Content >=97%, granularity≤ 1μm；Graininess in the silicon powder is high activity amorphous state.
CN201711051697.5A 2017-10-30 2017-10-30 A kind of ferrosilicon bag half lightweight siliceous mullite brick and preparation method thereof Pending CN107698247A (en)

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CN112707722A (en) * 2020-12-30 2021-04-27 巩义市新科耐火材料有限公司 Production method of modified corundum brick

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CN112707722A (en) * 2020-12-30 2021-04-27 巩义市新科耐火材料有限公司 Production method of modified corundum brick

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Application publication date: 20180216