CN101497930A - Single taphole blast furnace tapping channel iron storing type improving technology - Google Patents
Single taphole blast furnace tapping channel iron storing type improving technology Download PDFInfo
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- CN101497930A CN101497930A CNA2008101825097A CN200810182509A CN101497930A CN 101497930 A CN101497930 A CN 101497930A CN A2008101825097 A CNA2008101825097 A CN A2008101825097A CN 200810182509 A CN200810182509 A CN 200810182509A CN 101497930 A CN101497930 A CN 101497930A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
- C04B35/101—Refractories from grain sized mixtures
- C04B35/103—Refractories from grain sized mixtures containing non-oxide refractory materials, e.g. carbon
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/013—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics containing carbon
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/14—Discharging devices, e.g. for slag
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/0003—Linings or walls
- F27D1/0006—Linings or walls formed from bricks or layers with a particular composition or specific characteristics
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/14—Supports for linings
- F27D1/141—Anchors therefor
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3826—Silicon carbides
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5463—Particle size distributions
- C04B2235/5472—Bimodal, multi-modal or multi-fraction
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Blast Furnaces (AREA)
Abstract
The invention relates to a technical proposal in which the tapping runner of a single taphole blast furnace is transformed into an iron-storage iron runner to enable the iron runner to have long service life. The invention uses the method of elevating the taphole elevation of a skimmer and lowering a main runner, so that more hot metal is always stored in the main tapping runner, thereby buffering the impact of hot metal on the runner bottom and improving the application environment of refractory of the main runner. The invention solves the problem of the explosion-proof performance of runner iron castable, thus achieving the purpose that the tapping runner of the single taphole blast furnace uses refractory castable to substitute the traditional ramming material. Both the surface and the inner side of the runner lining made of castable are compact, so the problem that the surface of the ramming material is compact and the inner side is loose does not occur, so that the service life of the iron runner can be substantially prolonged, and the consumption of iron runner material of iron yield per unit is also reduced, which not only improves the economic benefits, but also has the advantages of resource conservation and waste slag reduction, and substantially reduces the labor intensity of the maintenance work of furnacemen.
Description
Technical field
The present invention relates to Dan Tiekou tap a blast furnace design of blast furnace iron outlet groove longevityization and renovation technique.
Background technology
Modern big blast furnace iron outlet groove generally uses fine Al2O3-SiC-C matter to hang down cement deposit material.Because mould material pouring density height, with respect to the fire-resistance rammed mass with material, refractory castable is more anti-to be washed away, thereby longer service life.But the iron runner of traditional Al2O3-SiC-C matter low-cement refractory pouring material cast must just can come into operation through processes such as maintenance sclerosis, baking dryings, and iron runner needs (1 day even pitch time a couple of days) for a long time from beginning cast (repairing) to come into operation (beginning to tap a blast furnace).
General big blast furnace all has the casting house more than 2, therefore when iron runner wherein must be made lining again and maybe must repair, as long as block behind the iron notch of this iron runner to this iron runner pour into a mould, maintenance sclerosis, baking be dry.Meanwhile, other iron notchs tap a blast furnace normally, do not influence the ordinary production of blast furnace.
But volume is the medium and small blast furnace below 1000 cubic metres generally is designed to single iron notch.Owing to have only an iron notch, to tap a blast furnace normally and have only about 1～3 hour at interval, the plan damping down time generally also has only 8～10 hours, can not guarantee if having time therefore that general mould material is made to serve as a contrast needed maintenance, storing time.Therefore, the blast furnace that Dan Tiekou taps a blast furnace generally adopts ramming mass to construct the iron runner liner because ramming mass generally adopts resin or tar combination, needn't toast after the ramming construction or slightly the short period of time baking can directly immediately cross molten iron.
But there is too short problem in work-ing life in ramming mass, and the ramming mass that is used for main casting house generally has only 1～15 day work-ing life, and major part is all at 3～5 days.This be because the ditch lining refractories of ramming generally just ditch basal surface one deck is closely knit relatively, and the top layer is following and ditch group position is all very loose, not anti-washing away.And because the iron runner of ramming is too short work-ing life, it is too frequent to cause casting house to repair, and the stokehold labor strength is too big, makes lining ramming quality and is difficult to especially guarantee.
Therefore how effectively solving the problem in single iron mouth blast furnace iron outlet groove life-span receives much concern.
Patent 200610086925 has proposed to exempt to toast mould material with a kind of resin-bonded and has substituted the problem that ramming mass solves single iron mouth blast furnace iron outlet groove weak point in work-ing life, but this mould material is owing to be resin-bonded mainly, resin demand is relatively large, still exist in the actual use and burn back pour mass short texture, thereby can not show a candle to the long service life of the used low cement of big blast furnace work-ing life in conjunction with Al2O3-SiC-C matter mould material.
In fact big blast furnace iron runner is the high long service life of iron influx why, not only because be to use mould material, but also because has used the iron storage type structure.The casting house tap drain that is big blast furnace always stores a large amount of molten iron in the iron runner during tapping a blast furnace and in the pitch time of tapping a blast furnace, so iron runner refractory materials temperature environment of living in is constant relatively.And the non-iron storage type iron runner of small furnace gone out iron after iron runner be exposed to fully in the air, the iron runner temperature reduces rapidly, the damage problem of rapid heat cycles such as cracking can appear shrinking because of temperature decrease in refractory materials repeatedly.In addition, always remaining a large amount of molten iron in the tap drain of iron storage type structure casting house, the strength that the molten iron of going out and falling from iron notch when therefore tapping a blast furnace impacts bottom of trench is stored in the molten iron buffering of bottom of trench, can not form too big impact, and this iron that falls impacts one of most important reason that small furnace main iron hook just damages to iron runner is low.
But up to the present, also do not have the process program and the practice of single iron mouth blast furnace iron runner iron storage type iron runner, carry out supportingly because if there be not suitable exempting from firmly soon to toast iron runner castable, then can't realize follow-up quick repairing and maintenance, and the repairing of this iron runner is necessary and lasting.
Summary of the invention
The technical problem to be solved in the present invention is, but propose a kind of improved have fast rigid energy and quick baking and the low cement of unburstable in conjunction with the preparation of Al2O3-SiC-C matter mould material and use this mould material with the transformation of single iron notch main trough of blast furnace or be designed to the iron storage type iron runner and use long-life technical scheme to obtain iron runner.
The particular content of technical solution of the present invention is, selecting corundum or high-alumina refractory aggregate for use is aggregate, SiC, fused white corundum powder, asphalt powder, metal Si powder etc. are powder, with the aluminous cement is wedding agent, and explosion-proof compositions such as adding metallic aluminium powder, Aluctyl, azo and polypropylene fibre, preparation can be used in cast-in-site and need not long-time baking can be by the refractory castable of molten iron, integrated poured the making of casting house that is used for single iron mouth blast furnace serves as a contrast or repairs, and simultaneously casting house transform as the iron storage type iron runner.
Concrete material mixture ratio such as following table:
Preceding 15 kinds of material mixing in the above-mentioned batching evenly become Preblend standby, and the tap water that only need add dry blend weight 5～8% during use is mixed into mortar and can be used for cast.
Non-iron storage type tapped a blast furnace, and to transform the tap a blast furnace method of tap drain of iron storage type as follows for tap drain:
Traditional single iron mouth main trough of blast furnace is as shown in Figure 1: 1 is blast furnace iron notch, and 2 is main iron hook, and 3 is the skimmer lintel, and 4 are an iron runner.The main iron hook ditch grade is bigger, and skimmer iron notch end props up iron runner bottom of trench absolute altitude c and almost approaches the absolute altitude b that the skimmer front end advances Tie Kouchu tap drain bottom of trench.Therefore, gone out iron the main iron hook bottom of trench can remaining molten iron later at every turn.In fact, traditional main iron hook has gone out after the iron at every turn, does not retain molten iron in the ditch, and traditional working method is all will spread yellow sand at the tap drain bottom of trench before the stokehold workman is tapped a blast furnace at every turn, with convenient a small amount of residual iron or the residue cleared up next time.
Main iron hook structure of modification of this programme or design diagram be as shown in Figure 2: 1 is the blast furnace iron notch synoptic diagram, and 2 is main iron hook, and 3 is the skimmer lintel, and 4 are an iron runner.At first raise the absolute altitude that the skimmer exit end props up the iron runner bottom of trench, make absolute altitude c that the skimmer exit end props up the iron runner bottom of trench advance absolute altitude b at the bottom of the Tie Kouchu tap drain far above skimmer; And to guarantee that absolute altitude c approaches iron notch lower edge height a, only a little less than iron notch lower edge height 5～10cm; To the about 1 meter beginning of skimmer direction, the high rapidly sinking of bottom of trench mark makes ditch grade reduce, so that can retain more molten iron in the tap drain after blast furnace has gone out molten iron at every turn to main iron hook from iron notch.
According to the iron runner of this programme transformation or design, will store the molten iron of a great deal of in the tap drain, make main iron hook iron become the iron storage type iron runner.This iron storage type iron runner will improve the rapid heat cycle environment of refractory materials greatly, and refractory materials obtains better sintering, be more conducive to the longevity of refractory materials.
Main iron hook according to this programme transformation or design, newly go out molten iron when casting house ejection and para-curve fall at every turn, molten iron will directly not pounded on the bottom of trench refractory materials, but dropped on the remaining molten iron, this will have very big benefit to prolonging refractory life to the bottom of trench refractory materials with fabulous buffering.
The residual iron mouth of skimmer bottom is still studied in France equally with traditional, treats to carry out tap drain or skimmer when repairing, and tap drain and skimmer are interior retains molten iron and will emit from the residual iron mouth bottom the skimmer.
Press the said structure scheme with mould material of the present invention and make iron runner, pour into a mould and got final product the demoulding and the baking of big fire immediately, the use of can tapping a blast furnace after about 30 minutes in back 1 hour.
When with mould material of the present invention iron runner being repaired, can adopt cover to water or application process, the use of can tapping a blast furnace after 10～20 minutes is toasted in the demoulding immediately and big fire immediately behind the casting.
The invention has the advantages that:
1, owing to have more molten iron to retain in the tap drain always, the molten iron when tapping a blast furnace will directly not pounded on the bottom of trench refractory materials, but has dropped on the remaining molten iron, and this will have very big benefit to prolonging refractory life to the bottom of trench refractory materials with fabulous buffering;
2, owing to retain a large amount of molten iron in the tap drain always, temperature is constant relatively in the ditch, and it is less relatively that refractory materials is influenced by rapid heat cycle, to prolonging refractory life very big benefit is arranged;
3, owing to adopt the casting construction to make lining, constructed ditch lining is all very fine and close from the surface to inside, do not exist ramming mass to have only the closely knit and inner loose problem in surface, so iron runner can prolong work-ing life significantly;
4, owing to solved fast baking explosion-proof technology, therefore the technological possibility that the high-quality iron runner material of big blast furnace is used for the small furnace iron runner is solved, the mould material basis of this programme is big blast furnace iron runner mould material, is used for the small furnace iron runner with big blast furnace ditch material and is expected to obtain longer work-ing life.
5, significantly prolong work-ing life owing to iron runner, so the labour intensity of stokehold workman's maintenance service reduces significantly;
6, significantly prolong work-ing life owing to iron runner, so the iron runner materials consumption of unit iron output also reduces the raising that not only brings economic benefit, resources conservation on the environment protection significance and the benefit that reduces waste residue in addition significantly.
Embodiment one
Adopt this programme that 450 cubic metres of main trough of blast furnace of certain Iron And Steel Company are transformed, the result is as follows:
The material proportion scheme is as shown in the table:
Preceding 15 kinds of material mixing in the above-mentioned batching evenly become Preblend standby, after the tap water that only need add dry blend weight 6% during use is mixed into mortar, by above-mentioned Fig. 2 structure of modification scheme the 3# blast furnace iron runner of this factory have been carried out the iron storage type transformation.
The cast scope comprises whole main iron hooks and whole iron runners, pours into a mould the demoulding in back about 30 minutes, and carries out the big fire baking immediately.Storing time was about 6 hours when iron runner was transformed for the first time, treated that the surface promptly begins to tap a blast furnace after rubescent.
Tap drain is not once repaired iron influx and is surpassed 100,000 tons, and an iron runner is not once repaired iron influx above 150,000 tons.
When above-mentioned iron runner is repaired, working method be to use above-mentioned mould material to overlap to water or and smear, cover waters after the moulding demoulding immediately and begins the big fire baking immediately, smearing the position also is to begin baking immediately.The big fire baking promptly began the iron that tapped a blast furnace after 20～30 minutes.
Description of drawings
Accompanying drawing 1 is traditional single iron mouth main trough of blast furnace diagrammatic cross-section, and 1 is blast furnace iron notch, and 2 is main iron hook, and 3 is the skimmer lintel, and 4 are an iron runner.
Accompanying drawing 2 is main iron hook structural representations of this programme, and 1 is the blast furnace iron notch synoptic diagram, and 2 is main iron hook, and 3 is the skimmer lintel, and 4 are an iron runner.
Claims (5)
1, a kind of with single iron mouth blast furnace iron outlet groove transformation or be designed to the iron storage type iron runner and use long-life technical scheme to obtain iron runner, it is characterized in that: the iron storage type iron runner is transformed or be designed to the structure of main casting house, promptly in tapping a blast furnace for twice at interval, always residual a large amount of molten iron in the main iron hook.But adopting, iron runner has fast rigid energy and quick baking and the low cement of unburstable is poured into a mould in conjunction with the A1203-SiC-C refractory casting material.
2, described single taphole blast furnace tapping channel iron storing type transformation of claim 1 or designing technique, it is characterized in that: by raising the absolute altitude that the skimmer exit end props up the iron runner bottom of trench, make absolute altitude that the skimmer exit end props up the iron runner bottom of trench advance absolute altitude at the bottom of the Tie Kouchu tap drain far above skimmer, and guarantee that the absolute altitude that the skimmer exit end props up the iron runner bottom of trench approaches iron notch lower edge height, only a little less than iron notch lower edge height 5～10cm, simultaneously main iron hook from iron notch to the about 1 meter beginning of skimmer direction, the high rapidly sinking of bottom of trench absolute altitude, make ditch grade reduce, thereby guarantee after blast furnace has gone out molten iron, can retain more molten iron in the tap drain at every turn.
3, described single taphole blast furnace tapping channel iron storing type transformation of claim 1 or designing technique is characterized in that: iron runner adopts the refractory castable casting and constructing.
4, described single taphole blast furnace tapping channel iron storing type transformation of claim 1 or designing technique, it is characterized in that: its used refractory castable is made up of following material:
5, described single taphole blast furnace tapping channel iron storing type transformation of claim 1 or designing technique is characterized in that: allocated metallic aluminium powder, azo acid amides, Aluctyl and polypropylene fibre in the mould material into as explosion-proof component.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101825097A CN101497930A (en) | 2008-12-05 | 2008-12-05 | Single taphole blast furnace tapping channel iron storing type improving technology |
| PCT/CN2009/000293 WO2010063157A1 (en) | 2008-12-05 | 2009-03-18 | An iron trough of single-taphole furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101825097A CN101497930A (en) | 2008-12-05 | 2008-12-05 | Single taphole blast furnace tapping channel iron storing type improving technology |
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| CN101497930A true CN101497930A (en) | 2009-08-05 |
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| CNA2008101825097A Pending CN101497930A (en) | 2008-12-05 | 2008-12-05 | Single taphole blast furnace tapping channel iron storing type improving technology |
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| WO (1) | WO2010063157A1 (en) |
Cited By (9)
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| CN102618678A (en) * | 2012-03-28 | 2012-08-01 | 攀钢集团西昌钢钒有限公司 | Blast furnace slag-iron separation device, slag-iron separation method and discharged blast furnace slag-iron recovery method |
| CN102766709A (en) * | 2012-07-09 | 2012-11-07 | 莱芜钢铁集团有限公司 | Method for prolonging the service life of main channel of blaster furnace by utilizing independent bearing structure |
| CN103253946A (en) * | 2013-04-25 | 2013-08-21 | 张贺芸 | Application method of explosionproof low cement castable |
| CN103253945A (en) * | 2013-04-25 | 2013-08-21 | 张贺芸 | Explosionproof low cement castable |
| CN104177106A (en) * | 2014-09-02 | 2014-12-03 | 吴雪健 | Preparation method of skimming device for use in blast-furnace tapping process |
| CN104557079A (en) * | 2014-12-12 | 2015-04-29 | 长兴优联马科技有限公司 | Explosion-proof ASC (Al2O3-SiC-C) refractory castable for iron ladles |
| CN109252007A (en) * | 2018-11-19 | 2019-01-22 | 云南玉溪仙福钢铁（集团）有限公司 | A kind of blast furnace iron storage type major groove |
| CN109797261A (en) * | 2018-12-25 | 2019-05-24 | 中国京冶工程技术有限公司 | Can Rapid-Repair high-performance sow and preparation method thereof and construction method |
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| JPH08157267A (en) * | 1994-11-30 | 1996-06-18 | Harima Ceramic Co Ltd | Castable refractory for flow-in execution |
| US6428743B1 (en) * | 2000-10-05 | 2002-08-06 | Vesuvius Crucible Company | Trough having an erosion-resistant precast shape |
| KR100919015B1 (en) * | 2002-11-27 | 2009-09-24 | 주식회사 포스코 | Apparatus with means for preventing turbulence of liquid in furnace |
| CN1641047A (en) * | 2004-01-14 | 2005-07-20 | 高兴奎 | Baking-free compact fused corundum iron tape channel pestle |
| CN100575504C (en) * | 2006-06-19 | 2009-12-30 | 北京联合荣大工程材料有限责任公司 | Iron runner exempts to toast mould material and lining technology is made in the cast of single iron mouth blast furnace iron outlet groove |
-
2008
- 2008-12-05 CN CNA2008101825097A patent/CN101497930A/en active Pending
-
2009
- 2009-03-18 WO PCT/CN2009/000293 patent/WO2010063157A1/en active Application Filing
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618678B (en) * | 2012-03-28 | 2014-11-26 | 攀钢集团西昌钢钒有限公司 | Blast furnace slag-iron separation device, slag-iron separation method and discharged blast furnace slag-iron recovery method |
| CN102618678A (en) * | 2012-03-28 | 2012-08-01 | 攀钢集团西昌钢钒有限公司 | Blast furnace slag-iron separation device, slag-iron separation method and discharged blast furnace slag-iron recovery method |
| CN102766709A (en) * | 2012-07-09 | 2012-11-07 | 莱芜钢铁集团有限公司 | Method for prolonging the service life of main channel of blaster furnace by utilizing independent bearing structure |
| CN103253946B (en) * | 2013-04-25 | 2016-03-09 | 郑州航空工业管理学院 | A kind of using method of Explosionproof low cement castable |
| CN103253945A (en) * | 2013-04-25 | 2013-08-21 | 张贺芸 | Explosionproof low cement castable |
| CN103253945B (en) * | 2013-04-25 | 2016-01-20 | 天津佰思特新材料科技有限公司 | A kind of Explosionproof low cement castable |
| CN103253946A (en) * | 2013-04-25 | 2013-08-21 | 张贺芸 | Application method of explosionproof low cement castable |
| CN104177106A (en) * | 2014-09-02 | 2014-12-03 | 吴雪健 | Preparation method of skimming device for use in blast-furnace tapping process |
| CN104177106B (en) * | 2014-09-02 | 2016-03-09 | 吴雪健 | The preparation method of the skimming equipment in a kind of blast furnace casting process |
| CN104557079A (en) * | 2014-12-12 | 2015-04-29 | 长兴优联马科技有限公司 | Explosion-proof ASC (Al2O3-SiC-C) refractory castable for iron ladles |
| CN109252007A (en) * | 2018-11-19 | 2019-01-22 | 云南玉溪仙福钢铁（集团）有限公司 | A kind of blast furnace iron storage type major groove |
| CN109797261A (en) * | 2018-12-25 | 2019-05-24 | 中国京冶工程技术有限公司 | Can Rapid-Repair high-performance sow and preparation method thereof and construction method |
| CN109797261B (en) * | 2018-12-25 | 2023-12-22 | 中国京冶工程技术有限公司 | High-performance main iron runner capable of being quickly repaired, and preparation method and construction method thereof |
| CN113789419A (en) * | 2021-09-14 | 2021-12-14 | 鞍钢股份有限公司 | Siphon type sand discharging opening device and sand discharging opening method |
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| WO2010063157A1 (en) | 2010-06-10 |
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