CN101239829A - High-performance fire-resistant abrasion-proof composite material - Google Patents
High-performance fire-resistant abrasion-proof composite material Download PDFInfo
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- CN101239829A CN101239829A CNA2008100493357A CN200810049335A CN101239829A CN 101239829 A CN101239829 A CN 101239829A CN A2008100493357 A CNA2008100493357 A CN A2008100493357A CN 200810049335 A CN200810049335 A CN 200810049335A CN 101239829 A CN101239829 A CN 101239829A
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Abstract
The present invention discloses a high-performance flame-proof abrasion-resisting composite material which is prepared mainly by the components of particle material alumina or/and corundum or/and mullite 50-70 parts; hard particle 5-25 parts; binding agent 8-25 parts; aluminum oxide micro powder or/and silicon micronized quartz powder 8-15 parts and surfactant 0.1 parts. The composite material is developed according to the scientific knowledge obtained in the long-term researching and producing for the flame-proof abrasion-resisting composite material in our company and absorbing the latest accomplishment of the present material science, the material has the advantages of increasing the high-temperature bonding strength and toughness of the composite material, increasing the binding ability of the interface between the composite material and the equipment, facilitating the two sides forming a compact and high-strength whole body, optimizing the capability of the composite material in the high-temperature state, prolonging the service lifetime of the equipment, reducing the number of the breakdown maintenance, reducing the material consumption and the labor intensity of the worker thereby obtaining the purpose of increasing the economic benefit of the enterprise.
Description
Technical field
The present invention relates to smelting iron and steel industry device-specific matrix material, especially relate to a kind of high-performance fire-resistant abrasion-proof composite material of long service life.
Background technology
Along with fast development of Chinese economy, Iron And Steel Industry has obtained good development opportunity, presents swift and violent growth momentum, and China Steel output reaches 4.0 hundred million tons, accounts for first place, the world, and steel quality and the very big raising of kind soya-bean oil become mainstay of the national economy industry.But iron and steel has the wearing and tearing of a lot of equipment position very serious in smelting process, as (1) blast furnace trough (water slag groove), generally adopt cement concrete, cast stone, cast steel as the trough raw material in medium and small iron and steel enterprise, because the hardness of these materials is lower, is difficult to satisfy the service requirements of big slag quantity discharged, it is very serious to wear and tear, as the bulk dry slag appears, cause that the concrete local temperature raises fast, also can blast, reduced work-ing life significantly; Big-and-middle-sized iron and steel enterprise generally adopts high manganese steel sheet to do the trough substrate, better with wear resisting property, but its hardness is on the low side, be not enough to tackle the impact of the blast furnace water quenching slag of the big discharge capacity of high rigidity, and when dry slag takes place, high temperature can make the hardness of high manganese steel sheet decline to a great extent, and its wear resistance is reduced, and the gasproof of high manganese steel sheet erosion property is relatively poor, can produce pit, increase friction resistance in the use, quickened its wearing and tearing, influenced the work-ing life of high manganese steel sheet; (2) groove and following groove on the sinter machine list roller water conservancy diversion, use steel alloy are difficult to satisfy the service requirements of ordinary production only about 30 days work-ing life in the time of 800-1100 ℃; Also have cyclone dust remover of blast furnace pipeline, hotblast stove blowpipe, steel-making refining unit circulating pipe etc. in addition, uses traditional fire-resistant loose material or fire-resistant shaping material, under the high temperature and the Al in the material owing to add consolidating material such as cement
2O
3, SiO
2, Fe
2O
3Generate eutectic Deng reaction, high temperature abrasion resistance, shock resistance descend, life-span can not be satisfied the requirement that ordinary production is used, the typing refractory materials descends hardness because self impurities of materials is higher, and the lime that adds in the iron-making and steel-making process, fluorite, rhombspar etc. at high temperature generate a large amount of glassy phases in addition, the wearing and tearing aggravation, erosion occurs and fall the piece phenomenon, limited work-ing life, hindered the normal operation of equipment.
Summary of the invention
The object of the present invention is to provide a kind of high-performance fire-resistant abrasion-proof composite material that under the condition of high temperature, prolongs service life of equipment significantly.
For achieving the above object, the present invention can take following technical proposals:
High-performance fire-resistant abrasion-proof composite material of the present invention, it mainly by the particulate material bauxitic clay or/and corundum or/and mullite, lapis amiridis, hard particles, wedding agent, alumina powder or/and silicon powder and tensio-active agent be prepared from according to the following weight parts proportioning:
The particulate material bauxitic clay or/and corundum or/and mullite 50-70 part; Hard particles 5-25 part; Wedding agent 8-25 part; Alumina powder is or/and silicon powder 8-15 part; 0.1 part in tensio-active agent.
Described corundum is brown corundum, sub-white corundum, white fused alumina, plate diamond spar or compact alumina; Described hard particles is silicon carbide, silicon nitride, Sialon or spinel; Described wedding agent is high-alumina cement (multimodal alundum cement CA-270,625# luminite cement, Lafarge cement Secar71,925 high-alumina cements) or aluminium silicon nanogel powder; Described tensio-active agent is polyoxyethylene glycol, trimeric cyanamide sulfonic acid and formaldehyde or citric acid.
When being used for some specific installations (groove and following groove, blast-furnace hot-air pipeline and hotblast stove blowpipe, blast furnace cyclone dust removal pipeline etc. on as sinter machine list roller water conservancy diversion), it also needs to add fiber reinforced material (as heat-resistance stainless steel fiber, polycrystalline alumina fiber, carbon fiber, silicon carbide fiber) 2-5 part.
The weight part proportioning of described raw material is: 30 parts of particulate material sub-white corundums, 20 parts of plate diamond spars, 5 parts of white fused aluminas; 5 parts in hard particles silicon carbide; 25 parts of wedding agent high-alumina cements; 3 parts of alumina powders, 5 parts of silicon powders; 0.1 part in tensio-active agent.
The weight part proportioning of described raw material also can be: 10 parts of particulate material bauxitic clays, 40 parts in brown corundum, 15 parts of compact aluminas, 5 parts of white fused aluminas; 15 parts in hard particles silicon carbide; 10 parts of wedding agent high-alumina cements, 2 parts in aluminium silicon nanogel powder; 8 parts of alumina powders, 4 parts of silicon powders; 0.1 part in tensio-active agent, 5 parts of filamentary materials.
The weight part proportioning of described raw material also can be: 45 parts of particulate material mullites, 15 parts of plate diamond spars, 5 parts of white fused aluminas; 13 parts in hard particles silicon carbide, 2 parts of silicon nitrides; 8 parts of wedding agent high-alumina cements; 6 parts of alumina powders, 4 parts of silicon powders; 0.1 part in tensio-active agent, 2 parts of filamentary materials.
The weight part proportioning of described raw material also can be: 35 parts of particulate material bauxitic clays, 20 parts in brown corundum; 15 parts in hard particles silicon carbide, 5 parts in Sialon powder; 10 parts of wedding agent high-alumina cements; 6 parts of alumina powders, 3 parts of silicon powders; 0.1 part in tensio-active agent, 5 parts of filamentary materials.
The weight part proportioning of described raw material also can be: 35 parts of particulate material compact aluminas, 30 parts of plate diamond spars; 22 parts of hard particles spinel powders; 10 parts of wedding agent high-alumina cements; 10 parts of alumina powders; 0.1 part in tensio-active agent.
Above-mentioned starting material are processed into needed granularity on request earlier, standby in the feed bin of packing into.
Various fine powder raw materials were mixed in intensive mixer 10 minutes, reach evenly standby; Various particulate material were put into the sand mill mixing 5-8 minute, add filamentary material (if sometimes) again, the limit edged mixes, and treats to add fine powder raw material and other raw materials of getting ready again behind the fiber homodisperse, got product pack warehouse-in after the weighing in remix 10-15 minute.
During construction, this product is put into sand mill, (ratio of matrix material and water is 100: 4-7), mix, according to the particular location of equipment or smear or spray or pour into a mould the back and get final product with vibrating head jolt ramming to add water.
The invention has the advantages that and choose bauxitic clay or/and corundum, can increase the toughness of matrix material or/and the mullite particle material; Choose hard particles silicon carbide, silicon nitride, Sialon or spinel, can increase its wear resistance; Choose aluminum oxide and silicon powder, can increase the compactness and the flowability of matrix material; Using polyoxyethylene glycol, trimeric cyanamide sulfonic acid and formaldehyde or citric acid to be tensio-active agent, is for suitable with wedding agent, improves the flowability of material, controls time of coagulation, reduces moisture and separates out, and increases density of material; This matrix material is a research and production experience of being engaged in Fire and abrasion resistant material according to my company for a long time, the last word development that absorbs contemporary Materials science goes out, it can improve the high temperature bond intensity and the toughness of matrix material, increase the interfacial combined function of matrix material and equipment, make the two form the integral body of compact high-strength, optimize the performance of matrix material under high-temperature situation, the work-ing life of prolongation equipment, reduce the break-down maintenance number of times, reduce materials consumption and working strength of workers, thereby reach the purpose that improves the business economic benefit.
Embodiment
Embodiment 1:
High-performance fire-resistant abrasion-proof composite material of the present invention, it is by 30 parts of raw material sub-white corundums (wherein granularity 5-3mm20 part, 1mm≤granularity＜3mm10 part), 20 parts of plate diamond spars (granularity is less than 1mm); 5 parts of white alundum powders (granularity 180 orders); 5 parts in hard particles silicon carbide (granularity 320 orders); 25 parts of high-alumina cements (15 parts of pure calcium aluminate cements, Lafarge cement Secar71:10 part); 3 parts of alumina powders (granularity＜200 micron), 5 parts of silicon powders (granularity＜1.0 micron); 0.1 part of surfactant polyethylene for suitable with wedding agent, also needs to add 0.03 part of Trisodium Citrate, 0.1 part of trisodium phosphate.
This matrix material first-selection is used for the blast furnace granulated slag ditch, compares with high manganese steel sheet, and every square metre cost-saved 13222.4 yuan, increase the service life by 2 years, the physicochemical property of this matrix material sees the following form.
| Al 2O 3(％) | ≥75 |
| Cold crushing strength MPa | ≥135 |
| Strength at normal temperature MPa | ≥32 |
| Volume density g/cm 3 | ≥3.0 |
| Wear-resisting value (SiC sand washing) | ≤4.0 |
| Line velocity of variation % (110 ℃ * 24h) | ±0.2 |
| Water resistance | Excellent |
Embodiment 2:
High-performance fire-resistant abrasion-proof composite material of the present invention, it is by 10 parts of bauxite raw material (granularity 8-5mm), 40 parts in brown corundum (granularity 5-3mm25 part wherein, 15 parts of granularity 1mm≤granularity＜3mm), 15 parts of compact aluminas (granularity is less than 1mm), 5 parts of white alundum powders (granularity 325 orders); 15 parts in hard particles silicon carbide (granularity less than 1mm10 part, 5 parts in granularity 325 orders); 10 parts of wedding agent high-alumina cements (wherein multimodal alundum cement CA-270:2 part, Lafarge cement Secar71:8 part), 2 parts in aluminium silicon nanogel powder; 8 parts of alumina powders (6 parts of wherein bimodal alumina powders, 2 parts of multimodal alumina powders), 4 parts of silicon powders (dust is agree silicon powder); 0.1 part in tensio-active agent (trimeric cyanamide sulfonic acid and formaldehyde), 5 parts of filamentary materials (4 parts of heat-resistance stainless steel fibers, 1 part of polycrystalline alumina fiber), equally, for suitable, also need to add 0.15 part of polyoxyethylene glycol with wedding agent, 0.0005 part of Carbon Dioxide lithium, 0.05 part of citric acid.
This matrix material first-selection is used for groove and following groove on the sinter machine list roller water conservancy diversion, and work-ing life, by original employing heat-resisting alloy steel 15 days extended to more than six months.Its physicochemical property sees the following form.
| Al 2O 3(％) | ≥75 | |
| Fe 2O 3(％) | ≤1.2 | |
| Volume density g/cm 3 | 110℃×24h | ≥3.05 |
| 1100℃×3h | ≥3.0 | |
| Apparent porosity (%) | 110℃×24h | ≤16 |
| 1100℃×3h | ≤18 | |
| Compressive strength MPa | 110℃×24h | ≥130 |
| 1100℃×3h | ≥100 | |
| Folding strength MPa | 110℃×24h | ≥16 |
| 1100℃×3h | ≥10 | |
| Line velocity of variation (%) | 1100℃×3h | +0.3 |
| Wear-resisting value CC | ≤4.0 | |
Embodiment 3:
High-performance fire-resistant abrasion-proof composite material of the present invention, it is by 45 parts of (granularity 8-5mm10 parts of raw material mullite, 3mm＜granularity＜5mm20 part, 1mm≤granularity≤3mm15 part,), 15 parts of plate diamond spars (granularity 3-1mm5 part, granularity is less than 1mm10 part), 5 parts of white alundum powders (granularity 200 orders); 13 parts in hard particles silicon carbide (granularity less than 1mm8 part, 5 parts in granularity 325 orders), 2 parts of silicon nitrides (granularity 325 orders); 8 parts of wedding agent high-alumina cements (Lafarge cement Secar71:6 part, 2 parts of 925 luminite cements); 6 parts of bimodal alumina powders, dust is agree 4 parts of silicon powders; 0.1 part of tensio-active agent citric acid, 2 parts of filamentary materials (heat-resistance stainless steel fiber) for suitable with wedding agent, also need to add 0.1 part of Sodium hexametaphosphate 99,0.05 part of trisodium phosphate.
This matrix material is used for the blast-furnace hot-air pipeline, through use in a year, and almost not wearing and tearing, the base point pit appears in part, the about 0.5-1.0mm of the degree of depth, can reach 3-5 work-ing life, satisfies manufacturer's requirement fully.
Embodiment 4:
High-performance fire-resistant abrasion-proof composite material of the present invention, it is by 35 parts of bauxite raw material (granularity 8-5mm15 part, 3mm≤granularity＜5mm20 part), 20 parts in brown corundum (3-1mm10 part, granularity less than 1mm5 part, 5 parts in granularity 325 orders); 15 parts in hard particles silicon carbide (granularity less than 1mm10 part, 5 parts in granularity 325 orders), 5 parts in Sialon powder (Sialon); 10 parts of wedding agent high-alumina cements (5 parts of 925# luminite cements, 5 parts of multimodal alundum cements); 6 parts of alumina powders (2 parts of bimodal alumina powders, 4 parts of multimodal alumina powders), 3 parts of 90 silicon powders; 0.1 part of surfactant polyethylene, 5 parts of filamentary materials for suitable with wedding agent, also need to add 0.1 part of Sodium hexametaphosphate 99,0.0005 part of Quilonum Retard.
This matrix material is used for blast furnace cyclone dust removal pipeline, uses the 1.0-1.5mm that only weares and teares after 2 years, and expectation can be used more than 10 years.Product physicochemical property such as following table.
| Al 2O 3(％) | ≥80 | |
| Volume density g/cm 3 | 110℃×24h | ≥2.95 |
| 600℃×3h | ≥2.93 | |
| Apparent porosity (%) | 110℃×24h | ≤16 |
| 600℃×3h | ≤17 | |
| Compressive strength MPa | 110℃×24h | ≥140 |
| 600℃×3h | ≥160 | |
| Folding strength MPa | 110℃×24h | ≥20 |
| 600℃×3h | ≥25 | |
| Line velocity of variation (%) | 600℃×3h | -0.06 |
| Wear-resisting value CC | ＜2.0 | |
Embodiment 5:
High-performance fire-resistant abrasion-proof composite material of the present invention, it is by 35 parts of raw material compact aluminas (granularity 8-5mm15 part, 3mm≤granularity＜5mm10 part, 1mm≤granularity＜3mm10 part), 30 parts of plate diamond spars (granularity 3-1mm10 part, granularity is less than 1mm20 part); 22 parts of hard particles spinel powders (granularity less than 10 parts of 1mm, 12 parts in granularity 200 orders); 10 parts of wedding agent high-alumina cements (multimodal alundum cement CA-270:6 part, Lafarge cement Secar71:4 part); 10 parts of alumina powders (8 parts of multimodal alumina powders, 2 parts of bimodal alumina powders); 0.1 part of tensio-active agent trimeric cyanamide sulfonic acid and formaldehyde for suitable with wedding agent, also needs to add 0.05 part of Sodium hexametaphosphate 99,0.005 part of Trisodium Citrate.
This composite is used for making steel concise equipment circulating pipe, and compares with corundum castable, can be brought up to 80-120 time from 30-50 time service life.
Claims (8)
1, a kind of high-performance fire-resistant abrasion-proof composite material is characterized in that: it mainly by the particulate material bauxitic clay or/and corundum or/and mullite, hard particles, wedding agent, alumina powder or/and silicon powder and tensio-active agent be prepared from according to the following weight parts proportioning:
The particulate material bauxitic clay or/and corundum or/and mullite 50-70 part; Hard particles 5-25 part; Wedding agent 8-25 part; Alumina powder is or/and silicon powder 8-15 part; 0.1 part in tensio-active agent.
2, high-performance fire-resistant abrasion-proof composite material according to claim 1 is characterized in that: described corundum is brown corundum, sub-white corundum, white fused alumina, plate diamond spar or compact alumina; Described hard particles is silicon carbide, silicon nitride, Sialon or spinel; Described wedding agent is high-alumina cement or aluminium silicon nanogel powder; Described tensio-active agent is polyoxyethylene glycol, trimeric cyanamide sulfonic acid and formaldehyde or citric acid.
3, high-performance fire-resistant abrasion-proof composite material according to claim 1 is characterized in that: it also comprises fiber reinforced material 2-5 part.
4, high-performance fire-resistant abrasion-proof composite material according to claim 1 and 2 is characterized in that: the weight part proportioning of described raw material is:
30 parts of particulate material sub-white corundums, 20 parts of plate diamond spars, 5 parts of white fused aluminas; 5 parts in hard particles silicon carbide; 25 parts of wedding agent high-alumina cements; 3 parts of alumina powders, 5 parts of silicon powders; 0.1 part in tensio-active agent.
5, high-performance fire-resistant abrasion-proof composite material according to claim 3 is characterized in that: the weight part proportioning of described raw material is:
10 parts of particulate material bauxitic clays, 40 parts in brown corundum, 15 parts of compact aluminas, 5 parts of white fused aluminas; 15 parts in hard particles silicon carbide; 10 parts of wedding agent high-alumina cements, 2 parts in aluminium silicon nanogel powder; 8 parts of alumina powders, 4 parts of silicon powders; 0.1 part in tensio-active agent, 5 parts of filamentary materials.
6, high-performance fire-resistant abrasion-proof composite material according to claim 3 is characterized in that: the weight part proportioning of described raw material is:
45 parts of particulate material mullites, 15 parts of plate diamond spars, 5 parts of white fused aluminas; 13 parts in hard particles silicon carbide, 2 parts of silicon nitrides; 8 parts of wedding agent high-alumina cements; 6 parts of alumina powders, 4 parts of silicon powders; 0.1 part in tensio-active agent, 2 parts of filamentary materials.
7, high-performance fire-resistant abrasion-proof composite material according to claim 3 is characterized in that: the weight part proportioning of described raw material is:
35 parts of particulate material bauxitic clays, 20 parts in brown corundum; 15 parts in hard particles silicon carbide, 5 parts in Sialon powder; 10 parts of wedding agent high-alumina cements; 6 parts of alumina powders, 3 parts of silicon powders; 0.1 part in tensio-active agent, 5 parts of filamentary materials.
8, high-performance fire-resistant abrasion-proof composite material according to claim 1 and 2 is characterized in that: the weight part proportioning of described raw material is:
35 parts of particulate material compact aluminas, 30 parts of plate diamond spars; 22 parts of hard particles spinel powders; 10 parts of wedding agent high-alumina cements; 10 parts of alumina powders; 0.1 part in tensio-active agent.
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| CN101973772A (en) * | 2010-10-28 | 2011-02-16 | 昆山思创耐火材料有限公司 | High-strength corundum mullite brick for annular silicon steel thermal treatment furnace and manufacture method thereof |
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