Al_2O_3-SiC-C免烘烤铁沟捣打料性能的研究
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摘要
为了提高出铁沟的使用效率,提高耐火材料的使用寿命,保证炼铁生产的正常进行,降低耐火材料单耗,提高高炉炼铁效率和效益,本文以特级高铝矾土熟料为骨料、白刚玉粉、SiC、球状沥青为基质,加入保湿剂,另添加少量抗氧化剂,研究了颗粒组成,SiC加入量和结合剂加入量对常温物理性能、抗热震性、耐磨性的影响、金属硅粉、铝粉加入量对抗氧化性的影响;乙二醇加入量和丙三醇加入量对保湿性的影响;以及溶胶结合剂对捣打料常温物理性能的影响。研究结果表明:
(1)当SiC加入量为15%左右时,捣打料的强度较高,体积密度较大,随着SiC加入量的增加,抗热震性提高,耐磨性提高,当SiC加入量超过15%时,耐磨性降低,抗热震性增加不明显;
(2)研究了热固性酚醛树脂加入量对捣打料性能的影响,其合适的加入量为5%;
(3)颗粒级配对浇注料的物理性能有较大的影响,对烘干和烧成后的试样性能研究表明,当q值为0.34时,性能较好;
(4)随着金属硅粉、铝粉的加入量的增加,捣打料的体积密度、抗折强度和耐压强度都有不同程度的提高;金属硅粉、铝粉加入量为3%、1.5%时,试样的强度、体积密度、耐磨性和抗氧化性较好;
(5)对保湿剂乙二醇和丙三醇加入量对捣打料性能影响的研究表明,当乙二醇和丙三醇二者的加入量分别为1~1.5%和1.5~2%时,试样的常温物理性能和保湿性较好;
(6)采用硅溶胶为结合剂,当硅溶胶加入量为5%时,试样的常温物理性能较好,1450℃烧后体积密度达到了2.68g·cm~(-3)。
In order to improve the service efficiency of iron trough,increase useful time of refractory,guarantee pudding manufacture on the rails,decrease unit consume of refractory,improve the pudding efficience and benefit of blast furnace. In the article,The Al_2O_3-SiC-C ramming mix was prepared with the high-alumina bauxite as aggregate, white corundum powder, silica carbide, spherical pitch as matrix, heat-hardenable phenolic resin as binder, glycol or glycerol as moisture retention agent, and adding little antioxidant. We have researched the effect of particle size distribution, silica carbide addition, binder addition on normal temperature physics performance,thermol shock resistance,wearing resistance effect of silica powder addition、aluminium powder addition on oxidization resistance, effect of glycol addition and glycerol addition on the retention period and the effect of sol binder on normal temperature physics performance. The results indicated that:
(1) When the content of SiC addition was about 15%,the strength of ramming mixes upper and the bulk density was biggish,with increasing of addition of SiC, thermol shock resistance enhanced and Wearing resistance increased,but when the content of SiC was more than 15%,the increasing of thermol shock resistance was not obvious and Wearing resistance decreased.
(2) The effect of penolic resin addition on fundamental performance of ramming mixes is studied ,the suitable addition is 5%.
(3) The particle size distribution has a great influence on physical performance ,synthesize and analyse the sample performance after drying and burning , the performance is the best when q value is 0.34.
(4) With the increase of silica powder addition、aluminium powder addition, the bulk density and the strength of ramming mixes increase more or less.when the addition of silica powder and aluminium powder is 3%、1.5%,the strength、bulk density、Wearing resistance and oxidization resistance is the best.
(5) The effect of glycol addition and glycerol addition as moisture retention agent on performance of ramming mixes is studied,when addition of glycol and glycerol is 1~1.5% and 1.5~2%,the normal physics performance and moisture retention is the best.
(6) Silica sol as a binder is adopted,when the addition is 5%,the normal physics performance is the best ,after burning under 1450℃the bulk density reaches 2.68 g·cm~(-3).
(1)当SiC加入量为15%左右时,捣打料的强度较高,体积密度较大,随着SiC加入量的增加,抗热震性提高,耐磨性提高,当SiC加入量超过15%时,耐磨性降低,抗热震性增加不明显;
(2)研究了热固性酚醛树脂加入量对捣打料性能的影响,其合适的加入量为5%;
(3)颗粒级配对浇注料的物理性能有较大的影响,对烘干和烧成后的试样性能研究表明,当q值为0.34时,性能较好;
(4)随着金属硅粉、铝粉的加入量的增加,捣打料的体积密度、抗折强度和耐压强度都有不同程度的提高;金属硅粉、铝粉加入量为3%、1.5%时,试样的强度、体积密度、耐磨性和抗氧化性较好;
(5)对保湿剂乙二醇和丙三醇加入量对捣打料性能影响的研究表明,当乙二醇和丙三醇二者的加入量分别为1~1.5%和1.5~2%时,试样的常温物理性能和保湿性较好;
(6)采用硅溶胶为结合剂,当硅溶胶加入量为5%时,试样的常温物理性能较好,1450℃烧后体积密度达到了2.68g·cm~(-3)。
In order to improve the service efficiency of iron trough,increase useful time of refractory,guarantee pudding manufacture on the rails,decrease unit consume of refractory,improve the pudding efficience and benefit of blast furnace. In the article,The Al_2O_3-SiC-C ramming mix was prepared with the high-alumina bauxite as aggregate, white corundum powder, silica carbide, spherical pitch as matrix, heat-hardenable phenolic resin as binder, glycol or glycerol as moisture retention agent, and adding little antioxidant. We have researched the effect of particle size distribution, silica carbide addition, binder addition on normal temperature physics performance,thermol shock resistance,wearing resistance effect of silica powder addition、aluminium powder addition on oxidization resistance, effect of glycol addition and glycerol addition on the retention period and the effect of sol binder on normal temperature physics performance. The results indicated that:
(1) When the content of SiC addition was about 15%,the strength of ramming mixes upper and the bulk density was biggish,with increasing of addition of SiC, thermol shock resistance enhanced and Wearing resistance increased,but when the content of SiC was more than 15%,the increasing of thermol shock resistance was not obvious and Wearing resistance decreased.
(2) The effect of penolic resin addition on fundamental performance of ramming mixes is studied ,the suitable addition is 5%.
(3) The particle size distribution has a great influence on physical performance ,synthesize and analyse the sample performance after drying and burning , the performance is the best when q value is 0.34.
(4) With the increase of silica powder addition、aluminium powder addition, the bulk density and the strength of ramming mixes increase more or less.when the addition of silica powder and aluminium powder is 3%、1.5%,the strength、bulk density、Wearing resistance and oxidization resistance is the best.
(5) The effect of glycol addition and glycerol addition as moisture retention agent on performance of ramming mixes is studied,when addition of glycol and glycerol is 1~1.5% and 1.5~2%,the normal physics performance and moisture retention is the best.
(6) Silica sol as a binder is adopted,when the addition is 5%,the normal physics performance is the best ,after burning under 1450℃the bulk density reaches 2.68 g·cm~(-3).
引文
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[30] 武杏荣,助烧剂对 ASC 捣打料烧结性的影响[J].耐火材料,2002,5:21-23.
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[32] 王义长译.B4C 添加物对 Al2O3-C 和 Al2O3-SiC-C 耐火材料抗氧化性能的影响[J].国外耐火材料,1998,(9):54-58.
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[2] 吕春燕.原位生成 Sialon 增强 Al2O3-SiC-C 铁沟浇注料研究[D].武汉.武汉科技大学硕士学位论文.2004.1-18.
[3] 韩行禄,刘景林.耐火材料应用[M].北京:冶金工业出版社,1986.55.
[4] 王战民,李再耕.高炉出铁沟用耐火材料的发展[J].耐火材料,1996,30(2):109-112
[5] 吴靖斌.高炉铁沟料的发展[J].马钢科研,1995,1(4):31-38.
[6] 邓小玲,Si3N4-Fe 对 Al2O3-SiC-C 质浇注料性能影响的研究[D].北京.北京科技大学硕士学位论文.2004.1-22.
[7] 罗茂华.昆钢高炉炉前耐火材料的开发应用[J].炼铁,2002,21(3):77-80
[8] 卢崇德.锆英石性能及在耐火材料工业上的应用[J].耐火材料,1984,(5):45~49],
[9] 徐惠娟,高炉出铁钩用耐火浇注料[J].耐火材料,2000, 04 (6):73-75.
[10] Xu G T, Zhang H L.Application of sol self-clean bonded Al2O3-SiC-C castable for iron runner[J].China’s Refractories, 2006, 15(3):10-12.
[11] Sasan O,Mohammad A. B,Fatollah M. The effect of deflocculants on the self-flow of ultra low-cement castable characteristic in Al2O3-SiC-C systems[J].Ceramics International, 2005,(31):647–653.
[12] 王伟.氧化铝基复合材料出铁沟预制件的研制与开发[D].重庆大学硕士学位论文.2001.5-17.
[13] 全荣译.添加尖晶石对 Al2O3-SiC-C 质浇注料的影响[J].国外耐火材,1999,(6),49-53
[14] 袁公权.我国不定形耐火材料的发展与展望[J].耐火材料,1982.(1):23~29.
[15] Li T. Present situation and development of refractories for blast furnace trough in BaoSteel[C].UNITECR'99, Berlin,Sept,1999:148-150.
[16] 刘麟瑞,林彬荫.工业窑炉用耐火材料手册[M].北京:冶金工业出版社,2001.154,171-178.
[17] Li W,Cheng B,Huang Z ,etal.Developmentof self-flowing Al2O3-SiC-C castable and its applicationto trough Of large blast furnaces[J].China's Refract,1998(3):22-26.
[18] Wang Z M,He X,Zhang N S.Monolithic refractories in casting house of blast furnace[J].China’s Refractory,2000,(9):6–17.
[19] 李再耕译,国外高炉炉前用耐火材料与施工发展概况[J].国外耐火材料,1997,31(3):1.
[20] 王战民,王守业.高炉出铁沟用不定形耐火材料的发展与应用[J].河南冶金,1996.11(4):3-5.
[21] Li Y F,Hong Y R.Slag Corrosion resistance of Sialon-Al2O3 composites-part1,Thermo dynamics and Mechanism.China's Refractories,2001,10(3): 14-17.
[22] 蒋泽.浅析影响耐火材料抗渣性的因素[J].江苏陶瓷,2000, 06: 33.
[23] 西正明,高桥达人.Al2O3-SiC-C material with good prosperity of corrosion resistance[J].耐火物,1985,(1):13-15.
[24] irai Naoki,Kayama Tsuneo,Nakamura Yukihiro,eta1.The effect of particle size and carbon content on Al2O3-C brick.UNTECR'99,Germany,1999:330-334.
[25] 蒙世平.高炉铁沟捣打料的研制[J].柳钢科技,2002.21(6):21-23.
[26] Wang L, Zhang X H. Effect of magnesia-chrome synthetic materials on manesia-alumina-chrome ramming mixes[J].China’s Refractories, 2006,15(3):24-27.
[27] Jiong S, Takahiro I, Kazuo U. Damage resistance and r-curve behavior of multilayer Al2O3/SiC ceramics[J]. Ceramics International,2000,(26):801-805.
[28] William B, Hi H. Silicon and silicon carbide composites[J].Am Ceram Soc,1994,73(4):56—60.
[29] 崔学正译.含 SiC 不定型耐火材料[J].国外耐火材料,1996,21(1)7-13.
[30] 武杏荣,助烧剂对 ASC 捣打料烧结性的影响[J].耐火材料,2002,5:21-23.
[31] 马北越,于景坤,孙勇.ZrO2-SiC 复合材料的合成及其添加对 Al2O3-C 质耐火材料抗氧化性能的影响[J].金属学报 2007 43(10):1059-1064.
[32] 王义长译.B4C 添加物对 Al2O3-C 和 Al2O3-SiC-C 耐火材料抗氧化性能的影响[J].国外耐火材料,1998,(9):54-58.
[33] Zhang Z P,Huang H H,Z H.Sialon-bonded SiC refractories for blast furnaces[J]. Intercerar,1993,42(5):292-297.
[34] Chen F, Bernard B, William E. Prediction of the effect of additives on alag resistance of Al2O3-SiO2-SiC-C bond phases in air[J].Calphad,2003,27(1):115-125.
[35] 刘素健.金属硅在 Al2O3-SiC-C 质浇注料中的添加效果[J].1998(5):60.
[36] 陈肇友,田守信.含碳耐火材料 Si 与 SiC 抑制碳氧化的机理[J].耐火材料,1995,4(14):36-41.
[37] 李再耕.不定形耐火材料的结合方式及其发展动态[J].耐火材料.1989,(4):25-29.
[38] 卢一国译.耐火材料用酚醛树脂的技术动向[J].国外耐火材料,1994,(7):36-40.
[39] 钟东南,孙助海,孙志武.镁碳砖用酚醛树脂的研制[J].热固性树脂,2006,21(3):20-22.
[40] Yoldas B E.Alumina sol preparation from alkoxide.Ceram Bull.1975,54:289-290.
[41] Wilson S,Hawthone H M,Yang Q,etal. Scale effects in abrasive wear of composite sol-gel.alumina coated light alloys.Wear 2000:1042-1050.
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