CN104016692B - A kind of coke dry quenching furnace cooling section refractory materials and preparation method - Google Patents
A kind of coke dry quenching furnace cooling section refractory materials and preparation method Download PDFInfo
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Abstract
A kind of coke dry quenching furnace cooling section refractory materials, its raw material composition and weight percent are: the homogenizing alumina 30 ~ 40% of granularity 5 ~ 1mm; The mullite 10 ~ 25% of granularity 3 ~ 1mm, the corundum 5 ~ 20% of granularity 3 ~ 1mm, granularity is no more than the andaluzite 3 ~ 15% of 1mm, granularity≤0.088mm lapis amiridis 3 ~ 15%; Granularity≤0.088mm mullite powder 8 ~ 25%; The ultrafine kaolin powder 1 ~ 10% of granularity≤0.01mm; The carborundum powder 3 ~ 12% of granularity≤1mm; Ferrosilicon powder 0.1 ~ 6%; There is the carbon black 0.1 ~ 4% of plasticity; The additional organic silicon solution accounting for above-mentioned raw materials total weight percent 3-6%; Preparation process: add organic silicon solution by after homogenizing alumina, mullite, corundum, andaluzite mixing; By ultrafine kaolin powder, the carbon black of plasticity is had to add mixing; Add the lapis amiridis of granularity≤0.088mm and mullite powder, the carborundum powder of granularity≤1mm, ferrosilicon powder mixing; Shaping; Dry; Fire; Cooling.The present invention can make the intensity of coke dry quenching furnace cooling section refractory materials improve at least 50%, and abrasion resistance properties improves 2 ~ 3.5 times; Bring up to 5 ~ 8 years work-ing life, reduce costs.
Description
Technical field
The present invention relates to a kind of refractory materials and preparation method thereof, belong to a kind of coke dry quenching furnace cooling section refractory materials and preparation method particularly.
Background technology
At present, the life cycle of coke dry quenching furnace is all no more than 5 years, and generally at about 4 years, the short major cause of its life cycle is that coke dry quenching furnace cooling section is worn and torn and is damaged.Especially make in recent years coke dry quenching furnace volumetric quantity constantly increase, as the increase of 7 meters or 7 meter 3 coke ovens along with the increase of output; And the intensity of the coke loaded increases, hardness is large, and wearing and tearing also increase, and make coke dry quenching furnace cooling section abrasion loss reach 37.2cm
3/ h, wear rate reaches 50 ~ 70mm/, or even the use of some coke oven just cannot continue normal use again less than 1 year.Through the analysis of the applicant, its major cause is that the B level mullite brick intensity that its cooling section uses is low, caused by wearing no resistance.
Through retrieval: (the coke dry quenching furnace Al delivered by Cao Yanhong
2o
3the development of-SiC matter liner tile. refractory materials .1998,32(3): 153-154), report Al
2o
3the manufacturing condition of-SiC brick, the features such as it is high that this product has intensity, and the excellent and high-temperature behavior of vibration strength is good, can reach more than 4 years work-ing life; But due to insufficient disclosure, cannot learn or legitimate inference its can what be by the technical measures that the life-span of coke dry quenching furnace is improved.
Fu Wei etc. are at " andaluzite granularity is on the impact of dry coke quenching by refractory product use properties " (the metallurgical .2013 in Shandong, 35(5): 30-31,34) disclose a kind of mullite-andaluzite product in a literary composition, with mullite synthesizing, andaluzite etc. for main raw material, be aided with white fused alumina, Suzhou clay, Al
2o
3micro mist, and inquired into different firing process and andalusite micropowder granularity to the impact of product properties.But its abrasion resistance properties is still close with B level mullite, and use properties is still poor, still undesirable.
Chinese Patent Application No. is the patent documentation of 200910032994.4, it discloses a kind of New-style Coke Dry Quenching refractory materials, and it contains SiC, the β-SiC of 20 ~ 35%, the Fe of 0.05 ~ 1.0% that weight ratio is 35 ~ 50%
2o
3with 5 ~ 15% Al
2o
3.The refractory material for dry quenching of this invention has the advantages such as compressive strength is high, wear resistance good, thermal shock performance is good, and can extend body of heater work-ing life, extends the turnaround, save production cost, but because silicon carbide cost is high, hard-to-sinter, is not suitable for cooling section refractory materials.
Chinese Patent Application No. is the patent documentation of 200810025023.2, it discloses a kind of stress buffering type fire resistive material for dry coke quenching equipment, by stress buffer raw material, useless kiln furnitures, sintering or electrofused mullite, Al
2o
3micro mist, clay, dextrin form, and wherein, stress buffer raw material is by andaluzite, fused quartz, Al
2o
3extrusion molding after micro mist, clay stir, at 1400-1650 DEG C, high temperature burns till 3-8h and obtains, this refractory materials in use can cushion the stress produced because of rapid heat cycle, all mention in thermal shock resistance, high temperature break resistant intensity, wear resistance, work-ing life and significantly improving, more existing dry coke quenching equipment refractory materials thermal shock resistance improves 20-40%, mechanical property improves 10-20%, erosion-resisting characteristics improves 30-50%, abrasion resistance properties improves 15-35%, and work-ing life extends more than 50%.Equally because its matrix is quartz, clay, micro mist sintering, material wear-resistant damages the limited extent that performance improves, and wearing and tearing are often from matrix, and last aggregate becomes isolated shape and comes off.
China Patent Publication No. is the patent documentation of CN1854106, it discloses a kind of refractory materials, especially the mullite silicon carbide refractory material of dry coke quenching silicon metal, it is characterized in that refractory materials has 3-15% Pure Silicon Metal, 35-65% sintering and/or electrofused mullite, 25-45% silicon carbide, 3-5% α-Al
2o
3micro mist, 4-10% clay forms.Comparatively prior art mullite silicon carbide refractory material, compactness improves 30-50%, and mechanical property improves 5-8%, and anti-thermal shock improves that 10-30%, anti-erosion improve more than 1 times, wearability improves more than 1 times, and work-ing life extends more than 50%; Because silicon carbide cost is high, Pure Silicon Metal cost is high, expensive for cooling section refractory materials.
Chinese Patent Application No. is the patent documentation of 201110395098.1, it discloses a kind of mullite silicon carbide brick on coke dry quenching furnace, it is made up of the raw material of following parts by weight: granularity is the electrofused mullite 35-55 of 5-3mm, granularity is 250-300 object sub-white corundum 10-15, granularity is the silicon carbide concentrate 10-15 of 2-0mm, granularity is 180-200 object silicon carbide concentrate 25-30, and granularity is the Al of 5-6 micron
2o
3micro mist 3-5, paper pulp 1-2, metallic aluminium 1-2, Pure Silicon Metal 1-2; Invention mullite silicon carbide brick Al
2o
3content is more than 30%, and SiC content 30-40%, refractoriness is greater than 1790 DEG C, and loading softening starts temperature more than 1600 DEG C, and density is greater than 2.60g/cm
3, void content is less than 20%, and intensity is greater than 90MPa.The brick silicon carbide cost of this invention same is high, and metallic aluminium easily produces gas, easily ftractures, and difficulty is applicable to cooling section refractory materials.
Summary of the invention
The present invention is directed to that prior art exists owing to using containing the deficiency of higher carbon SiClx raw material, one is provided not to be only applicable to coke dry quenching furnace cooling section refractory materials, and can at least 50% be improved than the intensity of former refractory materials, abrasion resistance properties improves 2 ~ 3.5%, cost is low, improves the life cycle coke dry quenching furnace cooling section refractory materials of 5 ~ 8 years and preparation method.
Realize the measure of above-mentioned purpose:
A kind of coke dry quenching furnace cooling section refractory materials, its raw material composition and weight percent are: the homogenizing alumina 30 ~ 40% of granularity 5 ~ 1mm; The mullite 10 ~ 25% of granularity 3 ~ 1mm, the corundum 5 ~ 20% of granularity 3 ~ 1mm, granularity is no more than the andaluzite 3 ~ 15% of 1mm, granularity≤0.088mm lapis amiridis 3 ~ 15%; Granularity≤0.088mm mullite powder 8 ~ 25%; The ultrafine kaolin powder 1 ~ 10% of granularity≤0.01mm; The carborundum powder 3 ~ 12% of granularity≤1mm; Ferrosilicon powder 0.1 ~ 6%; There is the carbon black 0.1 ~ 4% of plasticity; The additional organic silicon solution accounting for above-mentioned raw materials total weight percent 3-6%.
Preferably: the silicon weight percent content in ferrosilicon is not less than 60%.
Preferably: the fixed carbon weight percent content in carbon black is not less than 65%.
Prepare a kind of method of coke dry quenching furnace cooling section refractory materials, its step:
1) first homogenizing alumina, mullite, corundum, andaluzite are mixed, add organic silicon solution and mix 2 ~ 5 minutes;
2) by ultrafine kaolin powder, have the carbon black of plasticity to add mixing 3 ~ 5 minutes;
3) add the lapis amiridis of granularity≤0.088mm and mullite powder again, the carborundum powder of granularity≤1mm, ferrosilicon powder carry out mixing until evenly;
4) conventional extrusion forming;
5) dry at temperature is 100 ~ 120 DEG C, drying time controls to be no less than 24h;
6) fire at temperature is 1350 ~ 1420 DEG C, firing time control is no less than 3h;
7) come out of the stove after naturally cooling stand-by.
The effect of each raw material and master operation in the present invention:
Homogenizing alumina: use as aggregate, abrasion resistance properties is good, and price is relatively low.Value 30-40% is more suitable.
Mullite: as aggregate with the use of, heat resistanceheat resistant destructive characteristics is good.Value 10-25% is beneficial to the heat resistanceheat resistant destructive characteristics improving material.
Corundum: use as cooperation aggregate, the abrasion resistance properties of aggregate in increase.Value 5-20% less expensive.Be used as the abrasion resistance properties that fine powder mainly considers to increase matrix; Value 3-15% less expensive, turn increases the alumina content of matrix, improves resistance to elevated temperatures.
Andaluzite: swelling agent, middle aggregate, value 3-15% swell increment is proper, also both economical.
Ultrafine kaolin powder: acceleration of sintering agent, easily promotes the dense sintering of matrix, and value 1-10% is shunk little.
There is the carbon black of plasticity: reduce pore, increase the oilness of material or compressible performance, promote the compact structure of material.Value 0.1-4% is effective, and does not foam.
Mullite powder: the basic components of matrix, value 8-25%, matrix composition is more stable.
Carborundum powder: the component increasing abrasion resistance properties, value 3-12% cost less expensive.
Ferrosilicon powder: the sintering increasing matrix, improve the abrasion resistance properties of matrix, value 0.1-6% is effective, cost less expensive.
Organic silicon solution: increase bonding properties, value 3-6% intensity is higher.
Main technique:
Compared with prior art, make the strength ratio of coke dry quenching furnace cooling section refractory materials now can improve at least 50% with material, abrasion resistance properties improves 2 ~ 3.5 times in the present invention; Bring up to 5 ~ 8 years work-ing life, and can the repair time be saved, reduce production cost, be beneficial to coke dry quenching furnace normal table and produce and improve operating rate.
Embodiment
Below the present invention is described in detail:
Embodiment 1
A kind of coke dry quenching furnace cooling section refractory materials, its raw material composition and weight percent are: the homogenizing alumina 30% of granularity 5 ~ 1mm; The mullite 25% of granularity 3 ~ 1mm, the corundum 5% of granularity 3 ~ 1mm, granularity is no more than the andaluzite 3% of 0.1mm, granularity≤0.088mm lapis amiridis 10%, granularity≤0.088mm mullite powder 15%, the ultrafine kaolin powder 1% of granularity≤0.01mm, the carborundum powder 7% of granularity≤1mm, the ferrosilicon powder 3% of 60% silicon, have the fixed carbon content of plasticity be 70% carbon black 1%, the additional organic silicon solution accounting for above-mentioned raw materials total weight percent 3%.
Preparation process:
1) first by the homogenizing alumina 30% of granularity 5 ~ 1mm; The mullite 25% of granularity 3 ~ 1mm, the corundum 5% of granularity 3 ~ 1mm, the andaluzite 3% that granularity is no more than 0.1mm mixes, then adds the organic silicon solution of 3% and mix 2 minutes;
2) the ultrafine kaolin powder 1% of granularity≤0.01mm, the carbon black 1% that has the fixed carbon content of plasticity to be 70% are added and mix 5 minutes;
3) add again granularity≤0.088mm lapis amiridis 10%, granularity≤0.088mm mullite powder 15%, granularity≤1mm the ferrosilicon powder 3% of carborundum powder 7%, 60% silicon carry out mixing until evenly;
4) with 800 tons of brick pressing machine extrusion formings;
5) dry at temperature is 100 DEG C, drying time 24h;
6) fire at temperature is 1350 DEG C, the firing time is 3h;
7) come out of the stove after naturally cooling stand-by.
After testing, the product cold crushing strength after firing reaches 93.2MPa, and abrasion loss is 8.1cm
3/ h.
Embodiment 2
A kind of coke dry quenching furnace cooling section refractory materials, its raw material composition and weight percent are: the homogenizing alumina 39.5% of granularity 5 ~ 1mm; The mullite 13% of granularity 3 ~ 1mm, the corundum 7% of granularity 3 ~ 1mm, granularity is no more than the andaluzite 4% of 0.1mm, granularity≤0.088mm lapis amiridis 12%, granularity≤0.088mm mullite powder 8%, the ultrafine kaolin powder 10% of granularity≤0.01mm, the carborundum powder 5% of granularity≤1mm, the ferrosilicon powder 1% of 70% silicon, have the fixed carbon content of plasticity be 66% carbon black 0.5%, the additional organic silicon solution accounting for above-mentioned raw materials total weight percent 5%.
Preparation process:
1) first by the homogenizing alumina 39.5% of granularity 5 ~ 1mm; The mullite 13% of granularity 3 ~ 1mm, the corundum 7% of granularity 3 ~ 1mm, the andaluzite 4% that granularity is no more than 0.1mm mixes, then adds the organic silicon solution of 5% and mix 3 minutes;
2) the ultrafine kaolin powder 10% of granularity≤0.01mm, the carbon black 0.5% that has the fixed carbon content of plasticity to be 66% are added and mix 3 minutes;
3) add again granularity≤0.088mm lapis amiridis 12%, granularity≤0.088mm mullite powder 8%, granularity≤1mm the ferrosilicon powder 1% of carborundum powder 5%, 70% silicon carry out mixing until evenly;
4) with pressure be the brick pressing machine extrusion forming of 1000 tons;
5) dry at temperature is 110 DEG C, drying time is 25h;
6) fire at temperature is 1400 DEG C, the firing time is 4h;
7) come out of the stove after naturally cooling stand-by.
After testing, the product cold crushing strength after firing reaches 85.7MPa, and abrasion loss is 9.3cm
3/ h.
Embodiment 3
A kind of coke dry quenching furnace cooling section refractory materials, its raw material composition and weight percent are: the homogenizing alumina 36.5% of granularity 5 ~ 1mm; The mullite 10% of granularity 3 ~ 1mm, the corundum 15% of granularity 3 ~ 1mm, granularity is no more than the andaluzite 8% of 0.1mm, granularity≤0.088mm lapis amiridis 3%, granularity≤0.088mm mullite powder 20%, the ultrafine kaolin powder 2% of granularity≤0.01mm, the carborundum powder 3% of granularity≤1mm, the ferrosilicon powder 0.2% of 75% silicon, have the fixed carbon content of plasticity be 70% carbon black 2.3%, the additional organic silicon solution accounting for above-mentioned raw materials total weight percent 1.5%.
Preparation process:
1) first by the homogenizing alumina 36.5% of granularity 5 ~ 1mm; The mullite 10% of granularity 3 ~ 1mm, the corundum 15% of granularity 3 ~ 1mm, the andaluzite 8% that granularity is no more than 0.1mm mixes, then adds the organic silicon solution of 1.5% and mix 3.5 minutes;
2) the ultrafine kaolin powder 2% of granularity≤0.01mm, the carbon black 2.3% that has the fixed carbon content of plasticity to be 70% are added and mix 4 minutes;
3) add again granularity≤0.088mm lapis amiridis 3%, granularity≤0.088mm mullite powder 20%, granularity≤1mm the ferrosilicon powder 0.2% of carborundum powder 3%, 75% silicon carry out mixing until evenly;
4) with the brick pressing machine extrusion forming of pressure 900 tons;
5) dry at temperature is 115 DEG C, drying time is 25h;
6) fire at temperature is 1420 DEG C, the firing time is 3h;
7) come out of the stove after naturally cooling stand-by.
After testing, after the burning of brick, cold crushing strength reaches 79.5MPa, abrasion loss 12.7cm
3/ h.
Embodiment 4
A kind of coke dry quenching furnace cooling section refractory materials, its raw material composition and weight percent are: the homogenizing alumina 32.5% of granularity 5 ~ 1mm; The mullite 11% of granularity 3 ~ 1mm, the corundum 6.5% of granularity 3 ~ 1mm, granularity is no more than the andaluzite 11% of 0.1mm, granularity≤0.088mm lapis amiridis 5%, granularity≤0.088mm mullite powder 12%, the ultrafine kaolin powder 3% of granularity≤0.01mm, the carborundum powder 11% of granularity≤1mm, the ferrosilicon powder 4% of 72% silicone content, have the fixed carbon content of plasticity be 68% carbon black 4%, the additional organic silicon solution accounting for above-mentioned raw materials total weight percent 3.5%.
Preparation process:
1) first by the homogenizing alumina 32.5% of granularity 5 ~ 1mm; The mullite 11% of granularity 3 ~ 1mm, the corundum 6.5% of granularity 3 ~ 1mm, the andaluzite 11% that granularity is no more than 0.1mm mixes, then adds the organic silicon solution of 2.5% and mix 4 minutes;
2) the ultrafine kaolin powder 3% of granularity≤0.01mm, the carbon black 4% that has the fixed carbon content of plasticity to be 68% are added and mix 3 minutes;
3) add again granularity≤0.088mm lapis amiridis 5%, granularity≤0.088mm mullite powder 12%, granularity≤1mm the ferrosilicon powder 4% of carborundum powder 11%, 72% silicone content carry out mixing until evenly;
4) with the brick pressing machine extrusion forming of pressure 1500 tons;
5) dry at temperature is 120 DEG C, drying time is 24h;
6) fire at temperature is 1400 DEG C, the firing time is 3.5h;
7) come out of the stove after naturally cooling stand-by.
After testing, the product cold crushing strength after firing reaches 117.5MPa, abrasion loss 7.2cm
3/ h.
Embodiment 5
A kind of coke dry quenching furnace cooling section refractory materials, its raw material composition and weight percent are: the homogenizing alumina 33% of granularity 5 ~ 1mm; The mullite 10.5% of granularity 3 ~ 1mm, the corundum 5.5% of granularity 3 ~ 1mm, granularity is no more than the andaluzite 13% of 0.1mm, granularity≤0.088mm lapis amiridis 6%, granularity≤0.088mm mullite powder 18%, the ultrafine kaolin powder 4% of granularity≤0.01mm, the carborundum powder 4% of granularity≤1mm, the ferrosilicon powder 5.9% of 65% silicone content, have the fixed carbon content of plasticity be 68% carbon black 0.1%, the additional organic silicon solution accounting for above-mentioned raw materials total weight percent 6%.
Preparation process:
1) first by the homogenizing alumina 33% of granularity 5 ~ 1mm; The mullite 10.5% of granularity 3 ~ 1mm, the corundum 5.5% of granularity 3 ~ 1mm, the andaluzite 13% that granularity is no more than 0.1mm mixes, then adds the organic silicon solution of 6% and mix 4 minutes;
2) the ultrafine kaolin powder 4% of granularity≤0.01mm, the carbon black 0.1% that has the fixed carbon content of plasticity to be 68% are added and mix 3.5 minutes;
3) add again granularity≤0.088mm lapis amiridis 6%, granularity≤0.088mm mullite powder 18%, granularity≤1mm the ferrosilicon powder 5.9% of carborundum powder 4%, 65% silicone content carry out mixing until evenly;
4) with the brick pressing machine extrusion forming of pressure 800 tons;
5) dry at temperature is 120 DEG C, drying time is 26h;
6) fire at temperature is 1410 DEG C, the firing time is 4h;
7) come out of the stove after naturally cooling stand-by.
After testing, the product cold crushing strength after firing reaches 112.9MPa, abrasion loss 8.5cm
3/ h.
Above-described embodiment is only the best and exemplifies, and is not the restriction to embodiments of the present invention.
Claims (3)
1. a coke dry quenching furnace cooling section refractory materials, its raw material composition and weight percent are: the homogenizing alumina 30 ~ 40% of granularity 5 ~ 1mm, the mullite 10 ~ 25% of granularity 3 ~ 1mm, the corundum 5 ~ 7% of granularity 3 ~ 1mm, granularity is no more than the andaluzite 3 ~ 15% of 1mm, granularity≤0.088mm lapis amiridis 3 ~ 15%; Granularity≤0.088mm mullite powder 8 ~ 25%; The ultrafine kaolin powder 1 ~ 4% of granularity≤0.01mm; The carborundum powder 3 ~ 12% of granularity≤1mm; Ferrosilicon powder 0.1 ~ 6%; There is the carbon black 0.1 ~ 1% of plasticity; The additional organic silicon solution accounting for above-mentioned raw materials total weight percent 3 ~ 6%.
2. a kind of coke dry quenching furnace cooling section refractory materials as claimed in claim 1, is characterized in that: the silicon weight percent content in ferrosilicon powder is 60 ~ 72%.
3. prepare the method for a kind of coke dry quenching furnace cooling section refractory materials according to claim 1, its step:
1) the andaluzite first mullite of the homogenizing alumina of granularity 5 ~ 1mm, granularity 3 ~ 1mm, the corundum of granularity 3 ~ 1mm, granularity being no more than 1mm mixes, then adds organic silicon solution and mix 2 ~ 5 minutes;
2) by ultrafine kaolin powder, have the carbon black of plasticity to add mixing 3 ~ 5 minutes;
3) add the lapis amiridis of granularity≤0.088mm and mullite powder again, the carborundum powder of granularity≤1mm, ferrosilicon powder carry out mixing until evenly;
4) conventional extrusion forming;
5) dry at temperature is 100 ~ 120 DEG C, drying time controls to be no less than 24h;
6) fire at temperature is 1350 ~ 1420 DEG C, firing time control is no less than 3h;
7) come out of the stove after naturally cooling stand-by.
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| CN104944898A (en) * | 2015-06-24 | 2015-09-30 | 陈威宇 | High-performance light castable |
| CN107239035B (en) * | 2016-03-28 | 2020-03-06 | 五冶集团上海有限公司 | Expert system for diagnosis and maintenance measures of damage condition of lining refractory material of dry quenching furnace |
| CN106187235A (en) * | 2016-07-20 | 2016-12-07 | 武汉钢铁股份有限公司 | A kind of half heavy coke dry quenching furnace annular passage refractory brick and preparation method |
| CN107188548B (en) * | 2017-07-14 | 2021-09-17 | 山东耐材集团鲁耐窑业有限公司 | Wear-resistant brick and preparation method thereof |
| CN115010504B (en) * | 2022-05-11 | 2022-12-30 | 郑州大学 | Method for preparing high-strength bauxite-based mullite homogeneous material by two-step method |
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| CN102674858A (en) * | 2012-05-22 | 2012-09-19 | 宜兴市恒祥耐火材料有限公司 | Plastic composite-phase anti-stripping and wear-resisting mullite brick and preparation method thereof |
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| CN103130515A (en) * | 2011-12-02 | 2013-06-05 | 河南省新密市青屏耐火材料有限责任公司 | Mullite brick used for dry quenching stove |
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| JP4822192B2 (en) * | 2008-09-04 | 2011-11-24 | 品川リフラクトリーズ株式会社 | Non-fired carbon-containing refractories |
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| CN103130515A (en) * | 2011-12-02 | 2013-06-05 | 河南省新密市青屏耐火材料有限责任公司 | Mullite brick used for dry quenching stove |
| CN102674858A (en) * | 2012-05-22 | 2012-09-19 | 宜兴市恒祥耐火材料有限公司 | Plastic composite-phase anti-stripping and wear-resisting mullite brick and preparation method thereof |
| CN103121849A (en) * | 2012-07-04 | 2013-05-29 | 卫辉熔金高温材料有限责任公司 | Ferrosilicon-added slide plate refractory material and production method thereof |
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