CN100519483C - Iron outlet channel and method for preparing the same - Google Patents
Iron outlet channel and method for preparing the same Download PDFInfo
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- CN100519483C CN100519483C CNB2007101234054A CN200710123405A CN100519483C CN 100519483 C CN100519483 C CN 100519483C CN B2007101234054 A CNB2007101234054 A CN B2007101234054A CN 200710123405 A CN200710123405 A CN 200710123405A CN 100519483 C CN100519483 C CN 100519483C
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- casting house
- iron
- casting
- blast furnace
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- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention discloses an iron runner tapping material and making method and iron tapping runner through iron runner tapping material and its making method, which comprises the following parts: brown fused alumina, white alundum, carborundum, tar, pulverized corundum and metal silicon, wherein these materials are stirred to make the product after magnetic cobbing; 10-15% liquid phenol resin is added into iron tapping runner to cast into the product with high strength, compact structure, good erosion resistance, flushing proof and high melted iron quantity.
Description
Technical field
The present invention relates to a kind of casting house material and preparation method thereof, also relate to casting house and method thereof that this casting house material is made into.
Background technology
At present, single iron notch blast furnace, the structure of its casting house generally adopts non-iron storage type casting house, also is bareing casting house (the casting house bottom, back of promptly tapping a blast furnace exposes in air), the AL that adopt on making method more
2O
3The method of the on-the-spot ramming of-SiC-C matter casting house material.The concrete steps of this method are: wait to tap a blast furnace finish after, site clearing at first, remove residue iron in the ditch, primitive groove is served as a contrast working lining remnants refractory materials and slag thereof, iron complete removal, particle, dust in the ditch are blown clean with high-pressure air hose with power tools such as pneumatic pick and drill rods.During ramming, earlier with AL
2O
3-SiC-C matter casting house material is poured in the ditch after cleaning out, will expect evenly to spread out and put on, and with vibration-type electrorammer or pneumatic hammer layering ramming repeatedly, makes AL
2O
3-SiC-C matter casting house material vibration compacting, one time layer thickness is about 200mm, after waiting to expect to complete, ramming 3-5 times till ramming is closely knit, can makes and get rid of.The running repair of middle process generally can be used 3-5 days.AL
2O
3Its weak point of casting house that-SiC-C matter casting house material is made behind ramming is: tissue looseness, oxidation-resistance is poor, iron influx is low, casting house light maintenance in three days, and overhaul in five days repeats to repair ditch often, and labor strength is big, and casting house is short duration of service.Often influence blast furnace and tap a blast furnace on schedule, production is made troubles to blast furnace.Along with the continuous progress of blast furnace strengthening smelting and blast furnace operation technology, the capacity factor of a blast furnace and the number of casts constantly increase, and the working conditions of casting house refractory materials is harsh day by day.Also more and more higher to casting house with the requirement of refractory materials safe handling, longevity.
Summary of the invention
Purpose of the present invention overcomes the deficiencies in the prior art exactly, and the casting house of a kind of high temperature resistant, oxidation resistant casting house material and this casting house material casting is provided.
An object of the present invention is to provide a kind of casting house material.
Another object of the present invention provides the preparation method of described casting house material.
A further object of the present invention provides the casting house that described casting house material is made.
Purpose of the present invention also relates to the preparation method of described casting house.
The objective of the invention is to be achieved through the following technical solutions:
A kind of casting house material, it comprises the component of following parts by weight;
Palm fibre corundum 15-25 white fused aluminas 7-15
Silicon carbide 5-13 pitches 2-6
Lapis amiridis 8-16 Pure Silicon Metals 1-4.
Brown corundum of the present invention: be to be main raw material with bauxitic clay and hard coal and iron filings, in electric arc furnace, form through pyrotic smelting, be brown, good toughness, microhardness 1800-2200Kg/mm2, volume density 〉=3.85g/cm3, high temperature resistant, refractoriness is up to 1850 ℃, can do refractory materials, also can be used as abrasive material, its granularity is 0-1mm.
White fused alumina of the present invention: be to be raw material, in electric arc furnace, form through pyrotic smelting with the alundum.Crystal is white in color, AL
2O
3Content generally is higher than 98%, and hardness is higher than brown corundum, and toughness is lower than brown diamond spar, microhardness HV2200-2300, and density is greater than 3.95g/cm
3, cutting ability purity height is preferably arranged, grinding force is strong, and acid and alkali-resistance is high temperature resistant, Heat stability is good, its granularity is 0-1mm.
Silicon carbide of the present invention: have characteristics such as thermal conductivity height, hot strength are big, antiwear heat resisting shake, anti-erosion.Its granularity is 0-1mm.
Pure Silicon Metal of the present invention: claim industrial silicon or silicon metal again, be lead gloss, fusing point height, good heat resistance, resistivity height, have the heigh antioxidation effect, granularity is at 0.088～0.074mm.
Lapis amiridis of the present invention: AL
2O
3Content can be widely used in and make composite fireproof product, unshape refractory and general corundum refractory product between 95-97%, and granularity is at 0.088mm.
Pitch of the present invention: have very high slag resistance, its fixed carbon is greater than 45%, and softening temperature is greater than 110 ℃, its granularity 0.2～1mm.
Preferably, a kind of casting house material, it comprises following parts by weight component;
Palm fibre corundum 15-20 white fused aluminas 9-12
Silicon carbide 7-10 pitches 3-5
Lapis amiridis 10-15 Pure Silicon Metals 2-3.
The preparation method of casting house material of the present invention:
Press formula ratio and select required starting material, the iron contamination in magnetic separation removing starting material.Stirring makes powder even.
After 10-15% the liquid phenolic resin that casting house material of the present invention adds its total amount mixed, the casting house that cast is made need not baking and has that intensity height, compact structure, erosion-resisting characteristics wash away well, anti-, dry slag not, characteristics such as logical iron water amount height.
The preparation method of casting house of the present invention, it may further comprise the steps;
1, at single iron notch blast furnace discharge yard, installation mold in the casting house that molten iron is flowed through, the mold inside coating release agent, casting house material of the present invention was done mixed 1 minute, adding 2/3 liquid phenolic resin again stirred 2-3 minute, add remaining 1/3 liquid phenolic resin at last, stirred 2-3 minute, take out standby;
2, pour into the compound of step 1 in the template uniformly, the thickness of each stone is 200mm, again vibrating head is inserted in the slip, apart from die surface and trench metope 50-60mm, be vibrated to the compound charge level and return slurry, slowly extract vibrating head, must not in the bed of material, leave the cavity, insert vibrating head and continue vibration in slip, each oscillation point is 400-500mm at interval.
3, continue stone, vibration, method is with step 2, and after casting house was poured into desired depth, the demoulding need not toasted and can be come into operation.
Embodiment
Following examples are in order further to describe the present invention for example, rather than limit the present invention by any way.
Embodiment 1
Palm fibre corundum 20kg white fused alumina 10kg
Silicon carbide 8kg pitch 3kg
Lapis amiridis 10kg Pure Silicon Metal 3kg
Its preparation method is as follows:
One, the preparation method of casting house material of the present invention;
Take by weighing each raw material by formula ratio, the iron contamination in magnetic separation removing raw material mixes;
Two, the preparation method of casting house of the present invention.
1, at single iron notch blast furnace discharge yard, installation mold in the casting house that molten iron is flowed through, mold inside coating release agent, casting house material of the present invention was done mixed 1 minute, added the 4kg liquid phenolic resin again and stirred 3 minutes, add the 2kg liquid phenolic resin at last, stirred 2 minutes, and took out standby;
2, pour into the compound of step 1 in the template uniformly, the thickness of each stone is 200mm, again vibrating head is inserted in the slip, apart from die surface and trench metope 50mm, be vibrated to the compound charge level and return slurry, slowly extract vibrating head, must not in the bed of material, leave the cavity, insert vibrating head and continue vibration in slip, each oscillation point is 400mm at interval.
3, continue stone, vibration, method is with step 2, and after casting house was poured into desired depth, the demoulding need not toasted and can be come into operation.
Embodiment 2
Palm fibre corundum 18kg white fused alumina 15kg
Silicon carbide 11kg pitch 2kg
Lapis amiridis 12kg Pure Silicon Metal 2kg
Its preparation method is as follows:
One, the preparation method of casting house material of the present invention;
Take by weighing each raw material by formula ratio, the iron contamination in magnetic separation removing raw material mixes;
Two, the preparation method of casting house of the present invention.
1, at single iron notch blast furnace discharge yard, installation mold in the casting house that molten iron is flowed through, mold inside coating release agent, casting house material of the present invention was done mixed 1 minute, added the 6kg liquid phenolic resin again and stirred 2.5 minutes, add the 3kg liquid phenolic resin at last, stirred 2.5 minutes, and took out standby;
2, pour into the compound of step 1 in the template uniformly, the thickness of each stone is 200mm, again vibrating head is inserted in the slip, apart from die surface and trench metope 60mm, be vibrated to the compound charge level and return slurry, slowly extract vibrating head, must not in the bed of material, leave the cavity, insert vibrating head and continue vibration in slip, each oscillation point is 450mm at interval.
3, continue stone, vibration, method is with step 2, and after casting house was poured into desired depth, the demoulding need not toasted and can be come into operation.
The casting house of the novel casting house material preparation of the present invention and the casting house contrast of the casting house material of use preparation on a large scale now:
1. casting house material of the present invention is for exempting to toast mould material.
2. casting house material of the present invention is applicable to the making of single iron notch blast furnace iron outlet groove.
3. the casting house of the casting house material preparation of selecting for use in the past is that non-iron storage type casting house is also named the bareing casting house (after the end of promptly tapping a blast furnace, the casting house bottom exposes in air) because the preparation method of casting house limits, the casting house short texture of made, anti-oxidant poor, to cross the iron amount low, again because of tapping a blast furnace and when not tapping a blast furnace, the casting house temperature variation is too violent, casting house is easy to generate crackle, and the safe handling of casting house is caused disadvantageous effect.Casting house light maintenance in three days, overhaul in five days, labor strength is big, casting house duration of service short (cross the iron amount and seldom reach 10,000 tons), often because the maintenance casting house influences blast furnace to tap a blast furnace on schedule, production is made troubles to blast furnace.
4. use the casting house of casting house material preparation of the present invention to be the iron storage type casting house, promptly tap a blast furnace finish after, the molten iron that has some amount in the casting house makes the casting house major part be submerged in the iron underwater, thereby has avoided producing the casting house material Yin Wendu acute variation of iron runner and crack.When tapping a blast furnace in addition, molten iron drops on the molten iron liquid level of casting house storage, avoids the direct impact of molten iron to the casting house material, the damage that alleviates casting house.Because the casting house weave construction densification that casting house material of the present invention is made, the washing away of anti-molten iron, erosion performance significantly improve.Use in single iron notch blast furnace production scene, according to the production level of domestic present blast furnace, one time iron influx can reach more than 100,000 tons, and reach about two months duration of service.Greatly reduce the labour intensity of producing iron runner, also lay a solid foundation for the safe handling of casting house.
Below effect by the examining report explanation embodiment of the invention 1 high temperature resistant iron runner;
(1#)=AL
2O
3-SiC-C matter ramming casting house
(2#)=AL
2O
3-SiC-C matter cast casting house
(3#)=casting house of the embodiment of the invention 1
Survey report
Above data show the casting house of the embodiment of the invention 1 under 1450 ℃ high temperature, and its folding strength, compressive strength and line velocity of variation apparently higher than correlated other two kinds of casting houses, have high temperature resistant, folding, resistance to compression, indeformable characteristics.
Claims (7)
1. casting house material, it comprises the component of following parts by weight;
Palm fibre corundum 15-25 white fused aluminas 7-15
Silicon carbide 5-13 pitches 2-6
Lapis amiridis 8-16 Pure Silicon Metals 1-4.
2. a kind of casting house material according to claim 1, it comprises the component of following parts by weight;
Palm fibre corundum 15-20 white fused aluminas 9-12
Silicon carbide 7-10 pitches 3-5
Lapis amiridis 10-15 Pure Silicon Metals 2-3.
3. the preparation method of a kind of casting house material according to claim 1, it may further comprise the steps;
Take by weighing required starting material by formula ratio, the iron contamination in magnetic separation removing starting material, stirring makes powder even.
4. 10-15% the liquid phenolic resin that adds its total amount by a kind of casting house material of claim 1 mixes the casting house of back preparation.
5. casting house according to claim 4 is characterized by and is applicable to single iron notch blast furnace.
6. casting house according to claim 4 is characterized by the iron storage type casting house.
7. the preparation method of casting house according to claim 4, it may further comprise the steps;
1), at single iron notch blast furnace discharge yard, installation mold in the casting house that molten iron is flowed through, the mold inside coating release agent, casting house material of the present invention was done mixed 1 minute, adding 2/3 liquid phenolic resin again stirred 2-3 minute, add remaining 1/3 liquid phenolic resin at last, stirred 2-3 minute, take out standby;
2), pour into the compound of step 1) in the template uniformly, the thickness of each stone is 200mm, again vibrating head is inserted in the slip, apart from die surface and trench metope 50-60mm, be vibrated to the compound charge level and return slurry, slowly extract vibrating head, must not in the bed of material, leave the cavity, insert vibrating head and continue vibration in slip, each oscillation point is 400-500mm at interval;
3), continue stone, vibration, method is with step 2), after casting house was poured into desired depth, the demoulding need not toasted and can be come into operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101234054A CN100519483C (en) | 2007-06-22 | 2007-06-22 | Iron outlet channel and method for preparing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101234054A CN100519483C (en) | 2007-06-22 | 2007-06-22 | Iron outlet channel and method for preparing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101096314A CN101096314A (en) | 2008-01-02 |
| CN100519483C true CN100519483C (en) | 2009-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101234054A Expired - Fee Related CN100519483C (en) | 2007-06-22 | 2007-06-22 | Iron outlet channel and method for preparing the same |
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| Country | Link |
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| CN (1) | CN100519483C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102557683B (en) * | 2011-12-23 | 2013-11-20 | 中钢集团洛阳耐火材料研究院有限公司 | Aluminum chrome refractory material |
| CN102557694B (en) * | 2012-03-13 | 2013-06-12 | 湖南省涟源市合成耐火材料厂 | Steel separating agent for rotary platform and furnace cover of ladle refining furnace and method for preventing steel bonding of rotary platform and furnace cover of ladle refining furnace |
| CN106631054A (en) * | 2016-10-11 | 2017-05-10 | 洛阳万基炭素有限公司 | High-strength wearproof corundum casting material and construction process thereof |
| CN110195137A (en) * | 2019-05-14 | 2019-09-03 | 鞍钢股份有限公司 | A kind of new masonry iron mouth pore passage preparation method |
| CN110964867B (en) * | 2019-12-30 | 2022-01-14 | 河北鑫达钢铁集团有限公司 | Method for preventing cold shrinkage cracks of blast furnace tapping channel refractory material |
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2007
- 2007-06-22 CN CNB2007101234054A patent/CN100519483C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN101096314A (en) | 2008-01-02 |
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Granted publication date: 20090729 Termination date: 20120622 |