CN103693977A - Regenerated pouring material used for swinging runner and prepared from waste slide plates and preparation method of regenerated pouring material - Google Patents
Regenerated pouring material used for swinging runner and prepared from waste slide plates and preparation method of regenerated pouring material Download PDFInfo
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Abstract
The invention discloses a regenerated pouring material used for swinging runner and prepared from waste slide plates. The pouring material comprises the following materials in parts by weight: 25-40 parts of waste slide plate particles, 15-25 parts of high-aluminum alumina, 10-20 parts of white corundum, 10-25 parts of silicon carbide, 5-10 parts of alpha-Al2O3 micro powder, 2-5 parts of zircon sand, 1-3 parts of silicon micro powder, 2-4 parts of calcium aluminate cement, 1-3 parts of metal silicon, 0.08-0.12 part of anti-explosion fibers and 0.05-0.15 part of an additive FS200. The preparation method disclosed by the invention is simple, easy to realize, capable of lowering cost of the casting material for the swinging runner by over 20%, saving excellent refractory raw material resources and effectively prolonging service life of the regenerated pouring material, and has remarkable economic and social benefits for improving environment and realizing resource recycling.
Description
Technical field
The invention belongs to refractory castable field, particularly a kind of regenerated castable material and preparation method for the swing runner of preparing with waste and old slide plate.
Technical background
Swing runner is the key device that blast furnace ironmaking taps a blast furnace, and swing runner mould material plays very important effect to the trouble-free operation of blast furnace ironmaking, and swing runner mould material is that in blast furnace casting process, slag iron washes away erosion the most seriously and the worst region of working conditions.Swing runner mould material requires to have good resistance to water eroding and flooding performance and superior antistrip performance.Existing big-and-middle-sized blast furnace swing runner all adopts high-quality Al
2o
3-SiC-C matter mould material, generally take high-purity fused corundom as raw material, is equipped with silicon carbide, carbon and high-purity matrix fine powder and forms, and adopts ultra-low cement combination technology.Because swing runner mould material is comprised of high-grade high-quality raw material, material cost is high; Along with the application of continually developing of resource, available Mineral resources quantity is day by day poor, and the cycle multistage regeneration of swing runner mould material raw material resources has been the most important thing of country and Sustainable Development of Enterprises.
Chinese invention patent (publication number is CN103073311A) has been introduced the fast teeming material feeding of a kind of oscillating chute working lining, belongs to technical field of refractory materials; Comprise by mass percentage: electrofused mullite 15～30%, corundum 25～40%, carborundum powder 15～25%, lapis amiridis 5～10%, Reactive alumina 4～6%, quick-drying bonding agent 4～6%; Explosion-proof fiber 0.04～0.08%.It is high-grade highly energy-consuming material that this invention adopts starting material, and its manufacturing cost expense is higher.
Chinese invention patent (publication number is CN103159490A) has been introduced oscillating chute working lining mould material of a kind of matrix material and preparation method thereof, it is that raw material by following weight percent is prepared from: major ingredient: fused corundom 40% to 55%, silicon carbide 20% to 28%; Lapis amiridis 5% to 12%; Reactive alumina 4% to 8%; Auxiliary material: B4C combined binder 8% to 12%, detonation suppressor 0.2% to 0.35%.The main raw of this invention is fused corundom, and its price is more expensive.
Therefore, a kind of swing runner of preparing with waste and old slide plate regenerated castable material is provided, formula is reasonable through optimizing, preparation method is simple and easy to realize, can reduce swing runner mould material material cost more than 20%, save quality refractory raw material resources, effectively extend its work-ing life, to improving environment and realizing resources circulation regeneration, there is significant economic and social benefit.
Summary of the invention
China is that refractory materials is produced main state, is also the big country of refractory consumption rate.Refractory materials is widely used in the industry-by-industries such as metallurgy, building materials, oil, electric power, chemical industry, the millions of ton of waste and old refractory materials the use producing in various thermal kiln furnaces every year; Transportation and process these wastes and need to spend a large amount of man power and materials, and cause a large amount of wastings of resources, also environment has been produced to pollution.In the middle of the annual refractory materials consuming, have and a considerable amount ofly with refractory, can fully reclaim comprehensive recycling, turn waste into wealth.
For current present situation, the a large amount of waste and old slide plate recycling that the present invention produces after Iron And Steel Industry is used, through optimizing proportioning, form, be applied in blast furnace swing runner, can promote swing runner mould material anti-slag iron erosion, erosion-resisting characteristics and thermal shock resistance, reduce material comprehensive cost, improves product comprehensive benefit.Therefore the regeneration again to waste and old slide plate, both energy efficient also can resource recovery, had very high economic worth and far reaching significance.
Technical scheme of the present invention is achieved in that
The swing runner of preparing with a waste and old slide plate regenerated castable material, described mould material comprises the material of following parts by weight: waste and old slide plate bulk goods 25-40 part, alumine 15-25 part, white fused alumina 10-20 part, silicon carbide 10-25 part, α-Al2O3 micro mist 5-10 part, zircon sand 2-5 part, silicon powder 1-3 part, aluminous cement 2-4 part, Pure Silicon Metal 1-3 part, explosion-proof fiber 0.08-0.12 part, admixture FS20 0.05-0.15 part.
The particle diameter of described waste and old slide plate bulk goods be 0.1mm to 3mm and≤0.074mm; The particle diameter of described alumine is 3mm to 8mm, and the quality index of alumine is: Al203 >=88%.
The particle diameter of described white fused alumina be 0.1mm to 1mm and≤0.088mm, the quality index of white fused alumina is: Al203 >=99%.
The particle diameter of described silicon carbide be 0.1mm to 1mm and≤0.088mm, the quality index of silicon carbide is: SiC >=98%.
The particle diameter of described α-Al2O3 micro mist is < 4 μ m, and the quality index of α-Al2O3 micro mist is: Al203 >=99%.
The particle diameter of described zircon sand is 0.088mm to 0.5mm, and the quality index of zircon sand is: zro2 is 62-68%, and Si02 is 30-33%.
The particle diameter of described silicon powder is < 3 μ m, and the quality index of silicon powder is: Sio2 >=96%.
The particle diameter of described aluminous cement is < 0.044 ㎜, and the quality index of aluminous cement is: Al203 >=70%.
The particle diameter of described Pure Silicon Metal is < 0.044 ㎜, and the quality index of Pure Silicon Metal is: Si >=98%.
Its preparation methods steps is as follows: waste and old slide plate is carried out to artificial screening; Waste and old slide plate is carried out to grinding and processing; Crushed material after processing is carried out to iron removal by magnetic separation; Crushed material after magnetic separation is carried out to solubility 35% chlorohydric acid pickling, precipitation; After crushed material is dried with the material proportion mixing 2-3 minute such as alumine, white fused alumina, silicon carbide, α-Al2O3 micro mist, zircon sand, silicon powder, aluminous cement, Pure Silicon Metal, explosion-proof fiber, admixture FS20.
The present invention compared with prior art has the following advantages and beneficial effect: preparation method of the present invention is simple, be easy to realize, can reduce swing runner mould material material cost more than 20%, save quality refractory raw material resources, effectively extend its work-ing life, to improving environment and realizing resources circulation regeneration, there is significant economic and social benefit.
Embodiment
The invention provides a kind of swing runner of preparing with waste and old slide plate regenerated castable material.Comprise the steps:
The selection processing of 1 waste and old slide plate bulk goods
The waste and old slide plate using is rear waste and old fire-resistant slide plate for steel mill's ladle bottom is used, through artificial selection, slag crust material is separated, after classification, broken grinding and processing becomes different with≤0.074 ㎜ degree of 0.1-3 ㎜, and different grain size carries out iron removal by magnetic separation processing again, with concentration 35% hydrochloric acid soln preparing, adopt forced mixer evenly to mix 3-5 minute with waste and old slide plate particle, in placement appearance pond, sealed reaction is 24 hours; Toward holding, fill with clear water precipitate 12 hours in pond again, then calm pond is taken out waste and old slide plate particle and is carried out drying treatment 24 hours, treats standby.
1.1) processing of waste and old slide plate
The crushed material that waste and old slide plate is made, before allocating mould material into, need carry out processing treatment, mainly removes slag iron and eliminates false particle, and the existence of slag iron can reduce high-temperature behavior and the erosion resistance of regenerated castable material.Waste and old slide plate unavoidably can be with some slag iron and foreign material; For bulk slag iron, can advanced pedestrian's work point from, slag iron a small amount of and infiltration can be removed by Ferromagnet machine.
1.2) chemical analysis of waste and old slide plate
Waste and old slide plate chemical component table one
| Project | Al 2O 3 | SiC | C | SiO 2 | Fe 2O 3 | Ca0 |
| Composition/% | 73.8 | 18.5 | 5.86 | 4.97 | 0.79 | 0.81 |
The performance of regenerated castable material for 2 swing runners
In table two: regenerated castable material, waste and old slide plate add-on is 30%; Following experimental result shows, regenerated castable material is compared with the existing measured value by swing runner mould material, and amount of water is lower, and intensity is suitable, and volume density is higher, and void content is lower, and high-temperature behavior is better.Can find out, although now use swing runner mould material baked strength higher, after high temperature burns, folding strength is lower, and the amount of water of regenerated castable material is lower, bonding strength is higher, and after high temperature burns, folding strength effectively improves, and is conducive to resist the abrasion resistance of molten iron and improves its work-ing life.
Regenerated castable material and now use the performance comparison sheet two of swing runner mould material
3 regenerated castable material with now use the comparison of swing runner mould material anti-slag sample
By the waste and old slide plate add-on of difference, be that the swing runner of preparing burden is made crucible sample (size 100 ㎜ ╳ 100 ㎜ ╳ 100 ㎜) with regenerated castable material with adopting alumine, white fused alumina, silicon carbide, zircon sand, aluminous cement etc., the blast furnace slag iron that packs equal in quality after 110 ℃ of 24h are dry into carries out crucible anti-slag Experimental Comparison, and experiment condition is that 1450 ℃ ╳ 3 h burn till.Crucible after burning is cut open along central cross-section, and erosion condition is as table three:
Crucible anti-slag test situation comparison sheet three
| The trade mark | B-J2 | B-J3 | B-J1 |
| Material | Regenerated castable material | Regenerated castable material | Now use mould material |
| Waste and old slide plate add-on/% | 30 | 35 | / |
| Sample oxidated layer thickness/mm | 5 | 4 | 5 |
| Crucible hole periphery has or not metamorphic layer | Nothing | Nothing | Metamorphic layer 3mm |
| Scouring index/% | 58.4 | 48.6 | 62.2 |
Formulation optimization of the present invention is reasonable, be easy to realize, can reduce swing runner mould material material cost more than 20%, save quality refractory raw material resources, effectively extend its work-ing life, to improving environment and realizing resource regeneration, there is significant economic and social benefit.
Embodiment 1: a kind of swing runner of preparing with waste and old slide plate regenerated castable material, and it comprises the material of following parts by weight: 40 parts of waste and old slide plate bulk goodses, 25 parts of alumines, 20 parts of white fused aluminas; 25 parts, silicon carbide, 10 parts of α-Al2O3 micro mists, 5 parts of zircon sands, 3 parts of silicon powders, 4 parts of aluminous cements, 3 parts of Pure Silicon Metals, 0.12 part of explosion-proof fiber, 0.15 part of admixture.
The particle diameter of described waste and old slide plate bulk goods be 0.1mm to 3mm and≤0.074mm; The particle diameter of described alumine is 3mm to 8mm, and the quality index of alumine is: Al203 >=88%.
The particle diameter of described white fused alumina be 0.1mm to 1mm and≤0.088mm, the quality index of white fused alumina is: Al203 >=99%.
The particle diameter of described silicon carbide be 0.1mm to 1mm and≤0.088mm, the quality index of silicon carbide is: SiC >=98%.
The particle diameter of described α-Al2O3 micro mist is < 4 μ m, and the quality index of α-Al2O3 micro mist is: Al203 >=99%.
The particle diameter of described zircon sand is 0.088mm to 0.5mm, and the quality index of zircon sand is: zro2 is 62-68%, and Si02 is 30-33%.
The particle diameter of described silicon powder is < 3 μ m, and the quality index of silicon powder is: Sio2 >=96%.
The particle diameter of described aluminous cement is < 0.044 ㎜, and the quality index of aluminous cement is: Al203 >=70%.
The particle diameter of described Pure Silicon Metal is < 0.044 ㎜, and the quality index of Pure Silicon Metal is: Si >=98%.
Its preparation methods steps is as follows: waste and old slide plate is carried out to artificial slag crust material separation, waste and old slide plate after screening is carried out to grinding and processing, be machined to particle diameter 0.1mm to 3mm and≤0.074mm, crushed material after processing is put into magnetic separator and carry out iron removal by magnetic separation, with concentration 35% hydrochloric acid soln preparing, adopt forced mixer evenly to mix 3-5 minute with the crushed material after magnetic separation, in placement appearance pond, sealed reaction is 24 hours; Toward holding, in pond, fill with clear water and precipitate 12 hours again, then calm pond is taken out waste and old slide plate particle and is carried out drying treatment 24 hours, evenly mixes 2-3 minute with alumine, white fused alumina, silicon carbide, α-Al2O3 micro mist, zircon sand, silicon powder, aluminate cement 2-4, Pure Silicon Metal, explosion-proof fiber, admixture FS20 material.
Formulation optimization of the present invention is reasonable, be easy to realize, can reduce swing runner mould material material cost more than 20%, save quality refractory raw material resources, effectively extend its work-ing life, to improving environment and realizing resource regeneration, there is significant economic and social benefit.
Embodiment 2: a kind of swing runner of preparing with waste and old slide plate regenerated castable material, and it comprises the material of following parts by weight: 30 parts of waste and old slide plate bulk goodses, 20 parts of alumines, 15 parts of white fused aluminas; 15 parts, silicon carbide, 8 parts of α-Al2O3 micro mists, 3 parts of zircon sands, 1.5 parts of silicon powders, 2.5 parts of aluminous cements, 1.5 parts of Pure Silicon Metals, 0.1 part of explosion-proof fiber, 0.1 part of admixture.
The particle diameter of described waste and old slide plate bulk goods be 0.1mm to 3mm and≤0.074mm; The particle diameter of described alumine is 3mm to 8mm, and the quality index of alumine is: Al203 >=88%.
The particle diameter of described white fused alumina be 0.1mm to 1mm and≤0.088mm, the quality index of white fused alumina is: Al203 >=99%.
The particle diameter of described silicon carbide be 0.1mm to 1mm and≤0.088mm, the quality index of silicon carbide is: SiC >=98%.
The particle diameter of described α-Al2O3 micro mist is < 4 μ m, and the quality index of α-Al2O3 micro mist is: Al203 >=99%.
The particle diameter of described zircon sand is 0.088mm to 0.5mm, and the quality index of zircon sand is: zro2 is 62-68%, and Si02 is 30-33%.
The particle diameter of described silicon powder is < 3 μ m, and the quality index of silicon powder is: Sio2 >=96%.
The particle diameter of described aluminous cement is < 0.044 ㎜, and the quality index of aluminous cement is: Al203 >=70%.
The particle diameter of described Pure Silicon Metal is < 0.044 ㎜, and the quality index of Pure Silicon Metal is: Si >=98%.
Its preparation methods steps is as follows: waste and old slide plate is carried out to artificial slag crust material separation, waste and old slide plate after screening is carried out to grinding and processing, be machined to particle diameter 0.1mm to 3mm and≤0.074mm, crushed material after processing is put into magnetic separator and carry out iron removal by magnetic separation, with concentration 35% hydrochloric acid soln preparing, adopt forced mixer evenly to mix 3-5 minute with the crushed material after magnetic separation, in placement appearance pond, sealed reaction is 24 hours; Toward holding, in pond, fill with clear water and precipitate 12 hours again, then calm pond is taken out waste and old slide plate particle and is carried out drying treatment 24 hours, evenly mixes 2-3 minute with alumine, white fused alumina, silicon carbide, α-Al2O3 micro mist, zircon sand, silicon powder, aluminate cement 2-4, Pure Silicon Metal, explosion-proof fiber, admixture FS20 material.
Formulation optimization of the present invention is reasonable, be easy to realize, can reduce swing runner mould material material cost more than 20%, save quality refractory raw material resources, effectively extend its work-ing life, to improving environment and realizing resource regeneration, there is significant economic and social benefit.
Embodiment 3: a kind of swing runner of preparing with waste and old slide plate regenerated castable material, and it comprises the material of following parts by weight: 25 parts of waste and old slide plate bulk goodses, 15 parts of alumines, 20 parts of white fused aluminas; 10 parts, silicon carbide, 5 parts of α-Al2O3 micro mists, 2 parts of zircon sands, 1 part of silicon powder, 2 parts of aluminous cements, 1 part of Pure Silicon Metal, 0.08 part of explosion-proof fiber, 0.05 part of admixture.
Described alumine comprises two kinds of granularities of particle diameter 5mm to 8mm and 3mm to 5mm, and the quality index of alumine is: Al203 >=88%.
The particle diameter of described waste and old slide plate bulk goods be 0.1mm to 3mm and≤0.074mm; The particle diameter of described alumine is 3mm to 8mm, and the quality index of alumine is: Al203 >=88%.
The particle diameter of described white fused alumina be 0.1mm to 1mm and≤0.088mm, the quality index of white fused alumina is: Al203 >=99%.
The particle diameter of described silicon carbide be 0.1mm to 1mm and≤0.088mm, the quality index of silicon carbide is: SiC >=98%.
The particle diameter of described α-Al2O3 micro mist is < 4 μ m, and the quality index of α-Al2O3 micro mist is: Al203 >=99%.
The particle diameter of described zircon sand is 0.088mm to 0.5mm, and the quality index of zircon sand is: zro2 is 62-68%, and Si02 is 30-33%.
The particle diameter of described silicon powder is < 3 μ m, and the quality index of silicon powder is: Sio2 >=96%.
The particle diameter of described aluminous cement is < 0.044 ㎜, and the quality index of aluminous cement is: Al203 >=70%.
The particle diameter of described Pure Silicon Metal is < 0.044 ㎜, and the quality index of Pure Silicon Metal is: Si >=98%.
Its preparation methods steps is as follows: waste and old slide plate is carried out to artificial slag crust material separation, waste and old slide plate after screening is carried out to grinding and processing, be machined to particle diameter 0.1mm to 3mm and≤0.074mm, crushed material after processing is put into magnetic separator and carry out iron removal by magnetic separation, with concentration 35% hydrochloric acid soln preparing, adopt forced mixer evenly to mix 3-5 minute with the crushed material after magnetic separation, in placement appearance pond, sealed reaction is 24 hours; Toward holding, in pond, fill with clear water and precipitate 12 hours again, then calm pond is taken out waste and old slide plate particle and is carried out drying treatment 24 hours, evenly mixes 2-3 minute with alumine, white fused alumina, silicon carbide, α-Al2O3 micro mist, zircon sand, silicon powder, aluminate cement 2-4, Pure Silicon Metal, explosion-proof fiber, admixture FS20 material.
Formulation optimization of the present invention is reasonable, be easy to realize, can reduce swing runner mould material material cost more than 20%, save quality refractory raw material resources, effectively extend its work-ing life, to improving environment and realizing resource regeneration, there is significant economic and social benefit.
Claims (10)
1. the swing runner of preparing with a waste and old slide plate regenerated castable material, is characterized in that: described mould material comprises the material of following parts by weight: waste and old slide plate bulk goods 25-40 part, alumine 15-25 part, white fused alumina 10-20 part, silicon carbide 10-25 part, α-Al2O3 micro mist 5-10 part, zircon sand 2-5 part, silicon powder 1-3 part, aluminous cement 2-4 part, Pure Silicon Metal 1-3 part, explosion-proof fiber 0.08-0.12 part, admixture FS20 0.05-0.15 part.
2. mould material according to claim 1, is characterized in that: the particle diameter of described waste and old slide plate bulk goods be 0.1mm to 3mm and≤0.074mm; The particle diameter of described alumine is 3mm to 8mm, and the quality index of alumine is: Al203 >=88%.
3. mould material according to claim 1, is characterized in that: the particle diameter of described white fused alumina be 0.1mm to 1mm and≤0.088mm, the quality index of white fused alumina is: Al203 >=99%.
4. mould material according to claim 1, is characterized in that: the particle diameter of described silicon carbide be 0.1mm to 1mm and≤0.088mm, the quality index of silicon carbide is: SiC >=98%.
5. mould material according to claim 1, is characterized in that: the particle diameter of described α-Al2O3 micro mist is < 4 μ m, and the quality index of α-Al2O3 micro mist is: Al203 >=99%.
6. mould material according to claim 1, is characterized in that: the particle diameter of described zircon sand is 0.088mm to 0.5mm, and the quality index of zircon sand is: zro2 is 62-68%, and Si02 is 30-33%.
7. mould material according to claim 1, is characterized in that: the particle diameter of described silicon powder is < 3 μ m, and the quality index of silicon powder is: Sio2 >=96%.
8. mould material according to claim 1, is characterized in that: the particle diameter of described aluminous cement is < 0.044 ㎜, and the quality index of aluminous cement is: Al203 >=70%.
9. mould material according to claim 1, is characterized in that: the particle diameter of described Pure Silicon Metal is < 0.044 ㎜, and the quality index of Pure Silicon Metal is: Si >=98%.
10. the preparation method of the mould material as described in the claims any one, its method steps is as follows: waste and old slide plate is carried out to artificial screening; Waste and old slide plate is carried out to grinding and processing; Crushed material after processing is carried out to iron removal by magnetic separation; Crushed material after magnetic separation is carried out to solubility 35% chlorohydric acid pickling, precipitation; After crushed material is dried with the material proportion mixing 2-3 minute such as alumine, white fused alumina, silicon carbide, α-Al2O3 micro mist, zircon sand, silicon powder, aluminate cement 2-4, Pure Silicon Metal, explosion-proof fiber, admixture FS20.
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| CN104475717A (en) * | 2014-12-25 | 2015-04-01 | 山东钢铁股份有限公司 | Lining for molten iron flow groove of iron casting machine and building method thereof |
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| CN103951451B (en) * | 2014-05-06 | 2015-10-07 | 浙江华耐科技有限公司 | The manufacture method of high-strength wearable lining brick |
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| CN105294082A (en) * | 2015-12-02 | 2016-02-03 | 钢城集团凉山瑞海实业有限公司 | Al-Mg-Si type tank edge casting material and preparation method and application thereof |
| CN106187245A (en) * | 2016-07-25 | 2016-12-07 | 宜兴市中环耐火材料有限公司 | A kind of low aluminum micron wear-resistant castable |
| CN111423242A (en) * | 2020-04-22 | 2020-07-17 | 河南省宏达炉业有限公司 | Anti-stripping high-thermal-shock-resistance castable |
| CN112279658A (en) * | 2020-10-24 | 2021-01-29 | 郑州金泰科技特种耐火材料有限公司 | Environment-friendly refractory castable and production process thereof |
| CN112279658B (en) * | 2020-10-24 | 2023-03-14 | 郑州金泰科技特种耐火材料有限公司 | Environment-friendly refractory castable and production process thereof |
| CN112479726A (en) * | 2020-12-09 | 2021-03-12 | 攀枝花钢城集团有限公司 | Castable for electric furnace cover and preparation method thereof |
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| CN103693977B (en) | 2017-01-11 |
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