CN103819204A - Silicon carbide mullite wear-resisting casting material - Google Patents
Silicon carbide mullite wear-resisting casting material Download PDFInfo
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- CN103819204A CN103819204A CN201310559798.9A CN201310559798A CN103819204A CN 103819204 A CN103819204 A CN 103819204A CN 201310559798 A CN201310559798 A CN 201310559798A CN 103819204 A CN103819204 A CN 103819204A
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Abstract
The invention discloses a silicon carbide mullite wear-resisting casting material which comprises the following components in percentage by mass: 50-65% of aggregate, 10-20% of refined powder, 5-20% of micro powder, 3-10% of a composite additive, 3-6% of a binding agent and 1-2% of thermal resisting fiber steel. As mullite aggregate and silicon carbide aggregate are adopted as the aggregate, the casting material has properties of good temperature resistance, scouring resistance, erosion resistance and thermal shock resistance; as the silicon dioxide micro powder and the activated aluminum oxide micro powder are introduced and the ratio of the silicon dioxide micro powder to the activated aluminum oxide micro powder is adjusted, the high-temperature strength, the wear-resistance and the corrosion resistance of the material are greatly improved; a waste material, namely, silicon-mullite bricks, is utilized, so that the energy is saved, the emission is reduced, the high-temperature application property of the casting material is improved, and through addition of organic and inorganic composite additives, the high-temperature application property of the casting material is improved.
Description
Technical field
The present invention relates to silicon carbide electrofused mullite matter wear-resistant castable.
Background technology
Cement rotary kiln tertiary-air pipe straight tube, elbow, kiln head cover slope, stalk, the positions such as grate cooler sunk fence are because temperature is higher, in medium, Dust Capacity is large, souring is strong, and dust neutral and alkali composition weight, easily cement kiln equipment refractory materials working lining is caused to chemical erosion, alkali components at high temperature with working lining material reacts, generate low temperature liquid phase, liquid phase further generates infiltration to working lining coating material and corrodes, affect working lining materials'use performance, shorten working lining work-ing life, cause working lining material damage frequent, rotary kiln has to often stop kiln repairing.
Summary of the invention
Problem to be solved by this invention is to provide silicon carbide electrofused mullite matter wear-resistant castable, high temperature resistant, wear-resisting antiscour, resistance to erosion, anti-thermal shock.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme: silicon carbide electrofused mullite matter wear-resistant castable, comprises that the mass percent of following component and each component is:
Improved, mould material is made up of aggregate, fine powder, micro mist, composite additive, bonding agent and heat resistance fiber steel.
Improved, a aggregate comprises that the mass percent of following component and each component is:
Improved, a fine powder comprises that the mass percent of following component and each component is:
Granularity≤180 object electrofused mullite fine powder 30-55%;
Granularity≤320 object siliceous mullite brick fine powder 30-55%;
Carbide fine powder 15-25%.
Improved, a fine powder comprises that the mass percent of following component and each component is:
Improved, described siliceous mullite brick aggregate and siliceous mullite brick fine powder obtain by the discarded siliceous mullite brick fragmentation under changeing when the maintain and replace on cement rotary kiln.
Improved, described micro mist is the combination of fine silica powder and Reactive alumina, or described micro mist is the combination of fine silica powder, Reactive alumina and modification electrofused mullite micro mist.
Improved, the mass ratio of described Reactive alumina and fine silica powder is 2.3-2.5.
Improved, described composite additive is the combination of tripoly phosphate sodium STPP and explosion-proof fiber, or described composite additive is the combination of Sodium hexametaphosphate 99 and explosion-proof fiber, or described composite additive is the combination of tripoly phosphate sodium STPP, Sodium hexametaphosphate 99 and explosion-proof fiber.
Improved, described bonding agent is one or both the combination in high-alumina cement and pure calcium aluminate cement.
Beneficial effect:
Adopt after technique scheme, this invention silicon carbide electrofused mullite matter wear-resistant castable,
1) adopt high performance material electrofused mullite aggregate and carborundum aggregate as aggregate, made mould material there is better high temperature resistant, antiscour, resistance to erosion, thermal shock resistance;
2) mass ratio of having introduced fine silica powder and Reactive alumina and having adjusted both is to 2.3-2.5,
A. can complete fully secondary mullite reaction between the two, between matrix and aggregate, form mullite network structure, improve material monolithic intensity and wear resistance;
B. Reactive alumina reacts with primary mullite Watch glass phase high-energy state silicon oxide mullite simultaneously, between aggregate and matrix, form network-like Ceramic bond, casting material strength, corrosion resistance and wear resistance are improved, and residual silicon oxide is with glassy phase filling substrate pore, reduce rotary kiln medium osmosis and corroded path, improve material corrosion resistance, the particle exchange between catalyzed aggregates matrix under high temperature simultaneously, further improves mould material bulk strength;
C. certain volume effect is followed in secondary mullite reaction, make the densification of mould material weave construction, reduce matrix microdefect, reduce rotary kiln medium and alkali components and corroded passage, mould material corrosion resistance and wear resistance are further improved, after secondary mullite, in mould material, high-energy state material is fully reacted into the mullite of stable state, and mould material corrosion resistance strengthens greatly;
3) introduce a large amount of discarded siliceous mullite brick of cement production enterprise under changeing on rotary kiln in the time of maintain and replace, the composition of discarded brick is take mullite silicon carbide as major ingredient, response national energy-saving reduces discharging calls, discarded siliceous mullite brick refuse reclamation, saved the consumption of mullite aggregate and carborundum aggregate in mould material simultaneously, economize on resources, titanium oxide in siliceous mullite brick, ferric oxide and silicon oxide produce liquid phase promotion mould material sintering under rotary kiln working temperature in addition, improve mould material applied at elevated temperature performance;
4) contained the high disadvantageous effect of bringing of siliceous mullite brick porous water-absorbing rate by the interpolation of organic and inorganic compound composite additive;
5) select rational component proportion simultaneously, made Al in mould material
2o
3with quality percentage composition>=65% of SiC, make the volume density>=2.55g/cm of mould material
3, cold conditions folding strength (110 ℃ × 24h)>=9MPa, cold conditions folding strength (1100 ℃ × 3h)>=10MPa, cold conditions compressive strength (110 ℃ × 24h)>=80MPa, cold conditions compressive strength (1100 ℃ × 3h)>=90MPa, burn after line velocity of variation (1100 ℃ × 3h) be-0.10～-0.50%, wear resistance (1100 ℃)≤6cm
3, high temperature resistant, wear-resisting antiscour, resistance to erosion, anti-thermal shock.
Embodiment
Further illustrate silicon carbide electrofused mullite matter wear-resistant castable of the present invention below in conjunction with embodiment:
Embodiment mono-:
Silicon carbide electrofused mullite matter wear-resistant castable comprises that the mass percent of following component and each component is: aggregate 50%, fine powder 20%, micro mist 12%, composite additive 10%, bonding agent 6%, heat resistance fiber steel 2%, as preferably, mould material is only by aggregate, fine powder, micro mist, composite additive, bonding agent and heat resistance fiber steel composition, wherein, a aggregate comprises that granularity is the electrofused mullite aggregate 50% of 0.1-8mm, granularity is the carborundum aggregate 20% of 0.1-3mm, siliceous mullite brick aggregate 20% and alumine aggregate 10%, a fine powder comprises granularity≤180 object electrofused mullite fine powder 30%, granularity≤320 object siliceous mullite brick fine powder 55% and carbide fine powder 15%, described micro mist is the combination of fine silica powder and Reactive alumina, or described micro mist is fine silica powder, the combination of Reactive alumina and modification electrofused mullite micro mist, the mass ratio of described Reactive alumina and fine silica powder is 2.3-2.5, described composite additive is the combination of tripoly phosphate sodium STPP and explosion-proof fiber, or described composite additive is the combination of Sodium hexametaphosphate 99 and explosion-proof fiber, or described composite additive is tripoly phosphate sodium STPP, the combination of Sodium hexametaphosphate 99 and explosion-proof fiber, described bonding agent is high-alumina cement, or described bonding agent is pure calcium aluminate cement, or described bonding agent is the combination of high-alumina cement and pure calcium aluminate cement.
Described siliceous mullite brick aggregate and siliceous mullite brick fine powder obtain by the discarded siliceous mullite brick fragmentation under changeing when the maintain and replace on cement rotary kiln, cement production enterprise a large amount of siliceous mullite bricks that use on rotary kiln change lower a large amount of discarded siliceous mullite brick in the time of maintain and replace, the composition of these discarded siliceous mullite bricks is take electrofused mullite silicon carbide as major ingredient, also can make the increase of electrofused mullite and carborundum content in mould material by the interpolation of siliceous mullite brick, farthest refuse reclamation, avoid the wasting of resources and environmental pollution, responded the call that national energy-saving reduces discharging.
Embodiment bis-:
Silicon carbide electrofused mullite matter wear-resistant castable comprises that the mass percent of following component and each component is: aggregate 65%, fine powder 10%, micro mist 18%, composite additive 3%, bonding agent 3%, heat resistance fiber steel 1%, as preferably, mould material is only by aggregate, fine powder, micro mist, composite additive, bonding agent and heat resistance fiber steel composition, wherein, a aggregate comprises that granularity is the electrofused mullite aggregate 70% of 0.1-8mm, granularity is the carborundum aggregate 10% of 0.1-3mm, siliceous mullite brick aggregate 10%, alumine aggregate 10%, a fine powder comprises granularity≤180 object electrofused mullite fine powder 55%, granularity≤320 object siliceous mullite brick fine powder 30% and carbide fine powder 15%, described siliceous mullite brick aggregate and siliceous mullite brick fine powder obtain by the discarded siliceous mullite brick fragmentation under changeing when the maintain and replace on cement rotary kiln, described micro mist is the combination of fine silica powder and Reactive alumina, or, described micro mist is fine silica powder, the combination of Reactive alumina and modification electrofused mullite micro mist, the mass ratio of described Reactive alumina and fine silica powder is 2.3-2.5, described composite additive is the combination of tripoly phosphate sodium STPP and explosion-proof fiber, or, described composite additive is the combination of Sodium hexametaphosphate 99 and explosion-proof fiber, or, described composite additive is tripoly phosphate sodium STPP, the combination of Sodium hexametaphosphate 99 and explosion-proof fiber, described bonding agent is one or both the combination in high-alumina cement and pure calcium aluminate cement, described bonding agent is high-alumina cement, or, described bonding agent is pure calcium aluminate cement, or, described bonding agent is the combination of high-alumina cement and pure calcium aluminate cement.
Embodiment tri-:
Silicon carbide electrofused mullite matter wear-resistant castable comprises that the mass percent of following component and each component is: aggregate 58%, fine powder 15%, micro mist 15%, composite additive 6%, bonding agent 4%, heat resistance fiber steel 2%, as preferably, mould material is only by aggregate, fine powder, micro mist, composite additive, bonding agent and heat resistance fiber steel composition, wherein, a aggregate comprises that granularity is the electrofused mullite aggregate 60% of 0.1-8mm, granularity is the carborundum aggregate 15% of 0.1-3mm, siliceous mullite brick aggregate 15%, alumine aggregate 10%, a fine powder comprises granularity≤180 object electrofused mullite fine powder 40%, granularity≤320 object siliceous mullite brick fine powder 40% and carbide fine powder 20%, described siliceous mullite brick aggregate and siliceous mullite brick fine powder obtain by the discarded siliceous mullite brick fragmentation under changeing when the maintain and replace on cement rotary kiln, described micro mist is the combination of fine silica powder and Reactive alumina, or, described micro mist is fine silica powder, the combination of Reactive alumina and modification electrofused mullite micro mist, the mass ratio of described Reactive alumina and fine silica powder is 2.3-2.5, described composite additive is the combination of tripoly phosphate sodium STPP and explosion-proof fiber, or, described composite additive is the combination of Sodium hexametaphosphate 99 and explosion-proof fiber, or, described composite additive is tripoly phosphate sodium STPP, the combination of Sodium hexametaphosphate 99 and explosion-proof fiber, described bonding agent is one or both the combination in high-alumina cement and pure calcium aluminate cement, described bonding agent is high-alumina cement, or, described bonding agent is pure calcium aluminate cement, or, described bonding agent is the combination of high-alumina cement and pure calcium aluminate cement.
Embodiment tetra-:
Above-mentioned fine powder can be replaced by the fine powder that comprises granularity≤180 object electrofused mullite fine powder, granularity≤320 object siliceous mullite brick fine powder, carbide fine powder and high alumina fine powder.
In a fine powder, the mass percent of granularity≤180 object electrofused mullite fine powder, granularity≤320 object siliceous mullite brick fine powder, carbide fine powder and high alumina fine powder is respectively: 25%, 50%, 20%, 5%, or 50%, 25%, 10%, 15%, or 40%, 35%, 15%, 10%.
Except above preferred embodiment, the present invention also has other embodiment, and those skilled in the art can make according to the present invention various changes and distortion, only otherwise depart from spirit of the present invention, all should belong to the defined scope of claims of the present invention.
Claims (10)
1. silicon carbide electrofused mullite matter wear-resistant castable, is characterized in that: the mass percent that comprises following component and each component is:
2. silicon carbide electrofused mullite matter wear-resistant castable according to claim 1, is characterized in that: mould material is made up of aggregate, fine powder, micro mist, composite additive, bonding agent and heat resistance fiber steel.
3. silicon carbide electrofused mullite matter wear-resistant castable according to claim 2, is characterized in that: a aggregate comprises that the mass percent that following component and each component account for this part of bone is:
4. silicon carbide electrofused mullite matter wear-resistant castable according to claim 3, is characterized in that: a fine powder comprises that the mass percent of following component and each component is:
Granularity≤180 object electrofused mullite fine powder 30-55%;
Granularity≤320 object siliceous mullite brick fine powder 30-55%;
Carbide fine powder 15-25%.
5. silicon carbide electrofused mullite matter wear-resistant castable according to claim 3, is characterized in that: a fine powder comprises that the mass percent of following component and each component is:
6. according to the silicon carbide electrofused mullite matter wear-resistant castable described in claim 4 or 5, it is characterized in that: described siliceous mullite brick aggregate and siliceous mullite brick fine powder obtain by the discarded siliceous mullite brick fragmentation under changeing when the maintain and replace on cement rotary kiln.
7. silicon carbide electrofused mullite matter wear-resistant castable according to claim 6, it is characterized in that: described micro mist is the combination of fine silica powder and Reactive alumina, or described micro mist is the combination of fine silica powder, Reactive alumina and modification electrofused mullite micro mist.
8. silicon carbide electrofused mullite matter wear-resistant castable according to claim 7, is characterized in that: the mass ratio of described Reactive alumina and fine silica powder is 2.3-2.5.
9. silicon carbide electrofused mullite matter wear-resistant castable according to claim 8, it is characterized in that: described composite additive is the combination of tripoly phosphate sodium STPP and explosion-proof fiber, or, described composite additive is the combination of Sodium hexametaphosphate 99 and explosion-proof fiber, or described composite additive is the combination of tripoly phosphate sodium STPP, Sodium hexametaphosphate 99 and explosion-proof fiber.
10. silicon carbide electrofused mullite matter wear-resistant castable according to claim 9, is characterized in that: described bonding agent is one or both the combination in high-alumina cement and pure calcium aluminate cement.
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Cited By (14)
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|---|---|---|---|---|
| CN104230361A (en) * | 2014-09-23 | 2014-12-24 | 郑州瑞泰耐火科技有限公司 | High-temperature reinforcing agent for refractory materials and preparation method of high-temperature reinforcing agent |
| CN104725060A (en) * | 2015-03-16 | 2015-06-24 | 通达耐火技术股份有限公司 | High-strength refractory castable taking secondary guimo brick as aggregate |
| CN105801096A (en) * | 2014-12-01 | 2016-07-27 | 张婷 | Pouring material special for coal-injection duct of cement kiln of 12,000 T |
| CN106045536A (en) * | 2016-06-08 | 2016-10-26 | 郑州市豫茂工贸有限公司 | Novel refractory block for flue wall of roasting furnace and preparation method of novel refractory block |
| CN106083102A (en) * | 2016-06-30 | 2016-11-09 | 张婷 | A kind of cement rotary kiln flashboard castable |
| CN106316420A (en) * | 2016-08-01 | 2017-01-11 | 张婷 | Smelter castable |
| CN107056309A (en) * | 2017-04-07 | 2017-08-18 | 武汉科技大学 | A kind of Al2O3‑TiO2CaO matter gravity flow pouring materials and preparation method thereof |
| CN109608211A (en) * | 2018-12-21 | 2019-04-12 | 武汉钢铁集团耐火材料有限责任公司 | Hot-metal bottle aluminium silicon carbide castable and preparation method thereof |
| CN111018532A (en) * | 2019-12-03 | 2020-04-17 | 武汉兆融新材科技有限公司 | Silicon carbide ceramic tertiary air flashboard |
| CN112608160A (en) * | 2020-12-31 | 2021-04-06 | 长兴兴鹰新型耐火建材有限公司 | High-strength wear-resistant castable special for cement kiln gate |
| CN113045322A (en) * | 2021-03-17 | 2021-06-29 | 北京金隅通达耐火技术有限公司 | High-thermal-conductivity wear-resistant castable prepared from secondary silicon mullite bricks |
| CN113354402A (en) * | 2021-06-25 | 2021-09-07 | 西安建筑科技大学 | Surface modification method of used cement kiln silicon mullite brick and iron runner castable |
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| CN114409418A (en) * | 2022-01-19 | 2022-04-29 | 宜兴市锅炉密封工程有限公司 | High-strength wear-resistant castable and preparation method and application thereof |
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| CN101580401A (en) * | 2009-06-18 | 2009-11-18 | 安徽宁火新材料有限公司 | High-strength wearable casting material |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101580401A (en) * | 2009-06-18 | 2009-11-18 | 安徽宁火新材料有限公司 | High-strength wearable casting material |
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| CN104230361A (en) * | 2014-09-23 | 2014-12-24 | 郑州瑞泰耐火科技有限公司 | High-temperature reinforcing agent for refractory materials and preparation method of high-temperature reinforcing agent |
| CN105801096A (en) * | 2014-12-01 | 2016-07-27 | 张婷 | Pouring material special for coal-injection duct of cement kiln of 12,000 T |
| CN104725060A (en) * | 2015-03-16 | 2015-06-24 | 通达耐火技术股份有限公司 | High-strength refractory castable taking secondary guimo brick as aggregate |
| CN106045536A (en) * | 2016-06-08 | 2016-10-26 | 郑州市豫茂工贸有限公司 | Novel refractory block for flue wall of roasting furnace and preparation method of novel refractory block |
| CN106083102A (en) * | 2016-06-30 | 2016-11-09 | 张婷 | A kind of cement rotary kiln flashboard castable |
| CN106316420A (en) * | 2016-08-01 | 2017-01-11 | 张婷 | Smelter castable |
| CN107056309A (en) * | 2017-04-07 | 2017-08-18 | 武汉科技大学 | A kind of Al2O3‑TiO2CaO matter gravity flow pouring materials and preparation method thereof |
| CN109608211A (en) * | 2018-12-21 | 2019-04-12 | 武汉钢铁集团耐火材料有限责任公司 | Hot-metal bottle aluminium silicon carbide castable and preparation method thereof |
| CN111018532A (en) * | 2019-12-03 | 2020-04-17 | 武汉兆融新材科技有限公司 | Silicon carbide ceramic tertiary air flashboard |
| CN112608160A (en) * | 2020-12-31 | 2021-04-06 | 长兴兴鹰新型耐火建材有限公司 | High-strength wear-resistant castable special for cement kiln gate |
| CN113045322A (en) * | 2021-03-17 | 2021-06-29 | 北京金隅通达耐火技术有限公司 | High-thermal-conductivity wear-resistant castable prepared from secondary silicon mullite bricks |
| CN113045322B (en) * | 2021-03-17 | 2022-09-06 | 北京金隅通达耐火技术有限公司 | High-thermal-conductivity wear-resistant castable prepared from secondary silicon mullite bricks |
| CN113354402A (en) * | 2021-06-25 | 2021-09-07 | 西安建筑科技大学 | Surface modification method of used cement kiln silicon mullite brick and iron runner castable |
| CN113354402B (en) * | 2021-06-25 | 2023-02-28 | 西安建筑科技大学 | Surface modification method of used cement kiln silicon mullite brick and iron runner castable |
| CN114315392A (en) * | 2022-01-17 | 2022-04-12 | 濮阳濮耐高温材料（集团）股份有限公司 | Fluid stirring purification jointed board preparation material and fluid stirring purification jointed board preparation process |
| CN114315392B (en) * | 2022-01-17 | 2023-01-31 | 濮阳濮耐高温材料（集团）股份有限公司 | Fluid stirring purification jointed board preparation material and fluid stirring purification jointed board preparation process |
| CN114409418A (en) * | 2022-01-19 | 2022-04-29 | 宜兴市锅炉密封工程有限公司 | High-strength wear-resistant castable and preparation method and application thereof |
| CN114409418B (en) * | 2022-01-19 | 2023-02-07 | 宜兴市锅炉密封工程有限公司 | High-strength wear-resistant castable and preparation method and application thereof |
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