CN109836138A - Large and medium-sized blast furnace iron runner castable - Google Patents
Large and medium-sized blast furnace iron runner castable Download PDFInfo
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- CN109836138A CN109836138A CN201910297151.0A CN201910297151A CN109836138A CN 109836138 A CN109836138 A CN 109836138A CN 201910297151 A CN201910297151 A CN 201910297151A CN 109836138 A CN109836138 A CN 109836138A
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Abstract
It is to be formulated by raw material fused brown corundum, electric smelting dense alumina, silicon carbide, pure calcium aluminate cement, silicon powder, bimodal activity alumina powder, pelletted pitch, carbon black powder, antioxidant, organic fiber, anti-knock agent and high efficiency water reducing agent by certain weight the invention discloses a kind of large and medium-sized blast furnace iron runner castable；In use, being packed into moisture-proof sun-proof jumbo bag storage for being uniformly mixed after above-mentioned raw materials accurate weighing.3.5 ~ 4% pure water is added when site operation, stirs evenly and completes to construct, conventional baking can be used.The advantage of the invention is that using the grain size distribution of science to body particles material, raw materials used purity is strict with, it ensure that iron runner castable has good elevated temperature strength, volume stability and anti-erosion and scour resistance, antioxygenic property, extend the service life of iron runner, iron is increased out, the economic benefit of blast furnace ironmaking is improved.
Description
Technical field
The present invention relates to refractory materials, more particularly, to a kind of large and medium-sized blast furnace iron runner castable.
Background technique
Blast furnace is one of important equipment used in smelting iron and steel, as the large and medium-sized blast furnace quantity in China increases increasingly,
Requirement to castable refractory used in blast furnace iron outlet groove is also increasingly harsher.Current large and medium-sized blast furnace (refers to 1080 m3The above height
Furnace) used in iron runner castable mainly with Al2O3- SiC-C is main component, and wherein SiC and C is substance easy to oxidize.Iron runner
In use, since temperature can change repeatedly, the thermal stress of generation will cause castable refractory generation to castable
Crackle even peels off, i.e. the service life of iron runner castable is shorter, and tapping duration is generally below 90 days, out few (150,000 tons of iron
Below).The stability and service life that iron runner castable how can be improved in the environment of high-strength working, are technologies in industry
The research direction of personnel.
Summary of the invention
The purpose of the present invention is to provide a kind of iron runner castable that large and medium-sized blast furnace uses, the iron runner castable intensity
Height, stability is good, long service life.
To achieve the above object, the present invention can take following technical proposals:
Large and medium-sized blast furnace iron runner castable of the present invention, be by raw material fused brown corundum, electric smelting dense alumina, silicon carbide,
It is pure calcium aluminate cement, silicon powder, bimodal activity alumina powder, pelletted pitch, carbon black powder, antioxidant, organic fiber, explosion-proof
Agent and high efficiency water reducing agent are formulated by following weights:
50 ~ 60 parts of the fused brown corundum of 1 ~ 8mm of granularity；
5 ~ 8 parts of the electric smelting dense alumina of 0 ~ 1mm of granularity, 3 ~ 5 parts of the electric smelting dense alumina of 325 mesh；
8 ~ 12 parts of the silicon carbide of 0 ~ 1mm of granularity；8 ~ 12 parts of the silicon carbide of 200 mesh；
2 ~ 3 parts of pure calcium aluminate cement micro mist；
2 ~ 3 parts of the silicon powder that 1 μm of granularity；
5 ~ 8 parts of 3 ~ 5 μm of granularity of bimodal activity alumina powder；
2 ~ 3 parts of the pelletted pitch of 0.2 ~ 0.5mm of granularity；
(the CarobresP powder of import can be used, to improve the corrosion resistance of iron runner) in 0.5 ~ 1 part of carbon black powder；
1.5 ~ 2.5 parts of antioxidant；
0.05 ~ 0.08 part of organic fiber；
0.08 ~ 0.12 part of anti-knock agent；
0.1 ~ 0.15 part of high efficiency water reducing agent.
To guarantee that the quality of finished product castable meets requirement, in the raw materials used in the present invention, Al in fused brown corundum2O3
>=95%(mass percentage, similarly hereinafter)；Al in electric smelting dense alumina2O3≥99%；Bonding agent uses pure calcium aluminate cement, wherein
Al2O3≥75%；Al in bimodal activity alumina powder2O3≥99%。
In addition, SiC >=98% in silicon carbide used；SiO in the silicon powder2≥96%；C >=48% in the pelletted pitch,
Its softening temperature is 115 ~ 120 DEG C.
The antioxidant is formulated by metallic silicon power and boron carbide by the parts by weight of 3 ~ 4:1.
The organic fiber is that (low melting point that the production of Liaoyang Jin Tai chemical fibre Co., Ltd can be used is fine for low melting point organic fiber
Dimension), fusion temperature is 80 ~ 90 DEG C.
The anti-knock agent is the metallic aluminium powder of 100 ~ 200 mesh of granularity.
The high efficiency water reducing agent is formulated by German BASF FS10 and FS20 by the parts by weight of 1:2.
It will be uniformly mixed after above-mentioned raw materials accurate weighing, be packed into moisture-proof sun-proof jumbo bag storage.3.5 are added when site operation
~ 4% pure water stirs evenly and completes to construct, and conventional baking can be used.
After tested, the technical indicator for the iron runner castable that the present invention prepares is as shown in the table:
。
The advantage of the invention is that using the grain size distribution of science to body particles material, raw materials used purity is strictly wanted
It asks, ensure that iron runner castable has good elevated temperature strength, volume stability and anti-erosion and scour resistance, anti-oxidant
Performance extends the service life of iron runner, increases out iron, improves the economic benefit of blast furnace ironmaking.
Specific embodiment
More detailed explanation is done to the present invention below by specific embodiment, in order to the reason of those skilled in the art
Solution.
Embodiment 1 prepares 1080m3Blast furnace iron runner castable
Its raw material proportioning are as follows:
52 parts of the fused brown corundum of 1 ~ 8mm of granularity；
8 parts of the electric smelting dense alumina of 0 ~ 1mm of granularity, 5 parts of the electric smelting dense alumina of 325 mesh；
10 parts of the silicon carbide of 0 ~ 1mm of granularity；9 parts of the silicon carbide of 200 mesh；
2.5 parts of pure calcium aluminate cement micro mist；
3 parts of the silicon powder that 1 μm of granularity；
5 parts of 3 ~ 5 μm of granularity of bimodal activity alumina powder；
2 parts of the pelletted pitch of 0.2 ~ 0.5mm of granularity；
1 part of carbon black powder (import CarobresP powder)；
2 parts of antioxidant metallic silicon power, 0.5 part of boron carbide；
0.05 part of low melting point organic fiber；
0.12 part of metallic aluminium powder anti-knock agent；
German 0.04 part of BASF FS10 high efficiency water reducing agent, German 0.08 part of BASF FS20 high efficiency water reducing agent.
The sampled verification test of finished product is produced, the technical indicator of the iron runner castable is as follows:
Above-mentioned castable is in certain 1080m3It is used on blast furnace iron runner, tapping duration 105 days, iron is up to 170,000 tons out, tapping duration
It improves 15 days, improves blast furnace working efficiency.
Embodiment 2 prepares 1750m3Blast furnace iron runner castable
Its raw material proportioning are as follows:
55 parts of the fused brown corundum of 1 ~ 8mm of granularity；
5 parts of the electric smelting dense alumina of 0 ~ 1mm of granularity, 3 parts of the electric smelting dense alumina of 325 mesh；
12 parts of the silicon carbide of 0 ~ 1mm of granularity；12 parts of the silicon carbide of 200 mesh；
2 parts of pure calcium aluminate cement micro mist；
2 parts of the silicon powder that 1 μm of granularity；
6 parts of 3 ~ 5 μm of granularity of bimodal activity alumina powder；
2.5 parts of the pelletted pitch of 0.2 ~ 0.5mm of granularity；
1 part of carbon black powder (import CarobresP powder)；
2 parts of antioxidant metallic silicon power, 0.5 part of boron carbide；
0.05 part of low melting point organic fiber；
0.12 part of metallic aluminium powder anti-knock agent；
German 0.05 part of BASF FS10 high efficiency water reducing agent, German 0.10 part of BASF FS20 high efficiency water reducing agent.
The sampled verification test of finished product is produced, the technical indicator of the iron runner castable is as follows:
Above-mentioned castable is in certain 1750m3It is used on blast furnace iron runner iron runner, tapping duration 98 days, out 210,000 tons of iron, tapping duration
It improves 8 days, improves blast fumance efficiency.
Embodiment 3 prepares 1080m3Blast furnace iron runner castable
Its raw material proportioning are as follows:
55 parts of the fused brown corundum of 1 ~ 8mm of granularity；
7 parts of the electric smelting dense alumina of 0 ~ 1mm of granularity, 3 parts of the electric smelting dense alumina of 325 mesh；
12 parts of the silicon carbide of 0 ~ 1mm of granularity；8 parts of the silicon carbide of 200 mesh；
2 parts of pure calcium aluminate cement micro mist；
The silicon powder 2 that 1 μm of granularity；
7 parts of 3 ~ 5 μm of granularity of bimodal activity alumina powder；
2 parts of the pelletted pitch of 0.2 ~ 0.5mm of granularity；
1 part of carbon black powder (import CarobresP powder)；
1.5 parts of antioxidant metallic silicon power, 0.5 part of boron carbide；
0.08 part of low melting point organic fiber；
0.1 part of metallic aluminium powder anti-knock agent；
German 0.04 part of BASF FS10 high efficiency water reducing agent, German 0.08 part of BASF FS20 high efficiency water reducing agent.
The sampled verification test of finished product is produced, the technical indicator of the iron runner castable is as follows:
Above-mentioned castable is in certain 1080m3It is used on blast furnace iron runner, tapping duration 108 days, out 17.4 ten thousand tons of iron, tapping duration
It improves 18 days, improves blast fumance efficiency.
Embodiment 4 prepares 2000m3Blast furnace iron runner castable
Its raw material proportioning are as follows:
60 parts of the fused brown corundum of 1 ~ 8mm of granularity；
6 parts of the electric smelting dense alumina of 0 ~ 1mm of granularity, 3 parts of the electric smelting dense alumina of 325 mesh；
8 parts of the silicon carbide of 0 ~ 1mm of granularity；9 parts of the silicon carbide of 200 mesh；
2 parts of pure calcium aluminate cement micro mist；
2 parts of the silicon powder that 1 μm of granularity；
5 parts of 3 ~ 5 μm of granularity of bimodal activity alumina powder；
3 parts of the pelletted pitch of 0.2 ~ 0.5mm of granularity；
0.5 part of carbon black powder (import CarobresP powder)；
1.5 parts of antioxidant metallic silicon power, 0.5 part of boron carbide；
0.07 part of low melting point organic fiber；
0.08 part of metallic aluminium powder anti-knock agent；
German 0.035 part of BASF FS10 high efficiency water reducing agent, German 0.07 part of BASF FS20 high efficiency water reducing agent.
The sampled verification test of finished product is produced, the technical indicator of the iron runner castable is as follows:
Above-mentioned castable is in certain 2000m3It is used on blast furnace iron runner, tapping duration 102 days, out 220,000 tons of iron, tapping duration mentions
It is 12 days high, improve blast fumance efficiency.
Claims (8)
1. a kind of large and medium-sized blast furnace iron runner castable, it is characterised in that: be by raw material fused brown corundum, electric smelting dense alumina, carbon
SiClx, pure calcium aluminate cement, silicon powder, bimodal activity alumina powder, pelletted pitch, carbon black powder, antioxidant, organic fibre
Dimension, anti-knock agent and high efficiency water reducing agent are formulated by following weights:
50 ~ 60 parts of the fused brown corundum of 1 ~ 8mm of granularity；
5 ~ 8 parts of the electric smelting dense alumina of 0 ~ 1mm of granularity, 3 ~ 5 parts of the electric smelting dense alumina of 325 mesh；
8 ~ 12 parts of the silicon carbide of 0 ~ 1mm of granularity；8 ~ 12 parts of the silicon carbide of 200 mesh；
2 ~ 3 parts of pure calcium aluminate cement micro mist；
2 ~ 3 parts of the silicon powder that 1 μm of granularity；
5 ~ 8 parts of 3 ~ 5 μm of granularity of bimodal activity alumina powder；
2 ~ 3 parts of the pelletted pitch of 0.2 ~ 0.5mm of granularity；
0.5 ~ 1 part of carbon black powder；
1.5 ~ 2.5 parts of antioxidant；
0.05 ~ 0.08 part of organic fiber；
0.08 ~ 0.12 part of anti-knock agent；
0.1 ~ 0.15 part of high efficiency water reducing agent.
2. large and medium-sized blast furnace iron runner castable according to claim 1, it is characterised in that: Al in the fused brown corundum2O3
≥95%；Al in the electric smelting dense alumina2O3≥99%；Al in the pure calcium aluminate cement2O3≥75%；The bimodal activity oxygen
Change Al in aluminium micro mist2O3≥99%。
3. large and medium-sized blast furnace iron runner castable according to claim 1, it is characterised in that: SiC in the silicon carbide >=
98%；SiO in the silicon powder2≥96%。
4. large and medium-sized blast furnace iron runner castable according to claim 1, it is characterised in that: C in the pelletted pitch >=
48%, softening temperature is 115 ~ 120 DEG C.
5. large and medium-sized blast furnace iron runner castable according to claim 1, it is characterised in that: the antioxidant is by metallic silicon
Powder and boron carbide are formulated by the parts by weight of 3 ~ 4:1.
6. large and medium-sized blast furnace iron runner castable according to claim 1, it is characterised in that: the organic fiber is low melting point
Organic fiber, fusion temperature are 80 ~ 90 DEG C.
7. large and medium-sized blast furnace iron runner castable according to claim 1, it is characterised in that: the anti-knock agent be granularity 100 ~
The metallic aluminium powder of 200 mesh.
8. large and medium-sized blast furnace iron runner castable according to claim 1, it is characterised in that: the high efficiency water reducing agent is by Germany
BASF FS10 and FS20 is formulated by the parts by weight of 1:2.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110683838A (en) * | 2019-10-11 | 2020-01-14 | 上海新泰山高温工程材料有限公司 | Novel blast furnace casting slag runner castable and preparation method thereof |
| CN110723963A (en) * | 2019-10-31 | 2020-01-24 | 中冶武汉冶金建筑研究院有限公司 | Blast furnace tapping channel castable containing nano alumina and preparation method thereof |
| CN111072377A (en) * | 2020-01-06 | 2020-04-28 | 郑州市瑞沃耐火材料有限公司 | Carbon composite blast furnace iron runner castable |
| CN111484317A (en) * | 2020-05-09 | 2020-08-04 | 河南兴亚能源有限公司 | Homogenized alumina castable for blast furnace iron runner and preparation method thereof |
| CN111574207A (en) * | 2020-05-29 | 2020-08-25 | 郑州市瑞沃耐火材料有限公司 | High-thermal-conductivity iron runner castable |
| CN112358282A (en) * | 2020-11-11 | 2021-02-12 | 北京利尔高温材料股份有限公司 | Castable for iron hook and preparation method thereof |
| CN115466127A (en) * | 2022-09-16 | 2022-12-13 | 江苏嘉耐高温材料股份有限公司 | Blast furnace main iron runner gravity flow pumping material and application method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110683838A (en) * | 2019-10-11 | 2020-01-14 | 上海新泰山高温工程材料有限公司 | Novel blast furnace casting slag runner castable and preparation method thereof |
| CN110723963A (en) * | 2019-10-31 | 2020-01-24 | 中冶武汉冶金建筑研究院有限公司 | Blast furnace tapping channel castable containing nano alumina and preparation method thereof |
| CN110723963B (en) * | 2019-10-31 | 2022-06-03 | 中冶武汉冶金建筑研究院有限公司 | Blast furnace tapping channel castable containing nano alumina and preparation method thereof |
| CN111072377A (en) * | 2020-01-06 | 2020-04-28 | 郑州市瑞沃耐火材料有限公司 | Carbon composite blast furnace iron runner castable |
| CN111484317A (en) * | 2020-05-09 | 2020-08-04 | 河南兴亚能源有限公司 | Homogenized alumina castable for blast furnace iron runner and preparation method thereof |
| CN111574207A (en) * | 2020-05-29 | 2020-08-25 | 郑州市瑞沃耐火材料有限公司 | High-thermal-conductivity iron runner castable |
| WO2021238029A1 (en) * | 2020-05-29 | 2021-12-02 | 郑州市瑞沃耐火材料有限公司 | High-thermal-conductivity molten iron trough castable |
| CN112358282A (en) * | 2020-11-11 | 2021-02-12 | 北京利尔高温材料股份有限公司 | Castable for iron hook and preparation method thereof |
| CN115466127A (en) * | 2022-09-16 | 2022-12-13 | 江苏嘉耐高温材料股份有限公司 | Blast furnace main iron runner gravity flow pumping material and application method thereof |
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