CN111574206A - 一种大高炉抗侵蚀铁沟浇注料 - Google Patents
一种大高炉抗侵蚀铁沟浇注料 Download PDFInfo
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- CN111574206A CN111574206A CN202010395822.XA CN202010395822A CN111574206A CN 111574206 A CN111574206 A CN 111574206A CN 202010395822 A CN202010395822 A CN 202010395822A CN 111574206 A CN111574206 A CN 111574206A
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 131
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 65
- 238000005260 corrosion Methods 0.000 title claims abstract description 14
- 239000002245 particle Substances 0.000 claims abstract description 65
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 42
- 239000010431 corundum Substances 0.000 claims abstract description 36
- 239000000843 powder Substances 0.000 claims abstract description 30
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 26
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 25
- 230000003628 erosive effect Effects 0.000 claims abstract description 25
- 239000011863 silicon-based powder Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052580 B4C Inorganic materials 0.000 claims abstract description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 12
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 239000006229 carbon black Substances 0.000 claims abstract description 10
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000004568 cement Substances 0.000 claims abstract description 9
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 9
- 239000010426 asphalt Substances 0.000 claims abstract description 8
- 239000000835 fiber Substances 0.000 claims abstract description 7
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 7
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052751 metal Inorganic materials 0.000 claims description 27
- 239000002184 metal Substances 0.000 claims description 27
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 12
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 2
- 229910052681 coesite Inorganic materials 0.000 claims description 2
- 229910052906 cristobalite Inorganic materials 0.000 claims description 2
- 229910052682 stishovite Inorganic materials 0.000 claims description 2
- 229910052905 tridymite Inorganic materials 0.000 claims description 2
- 239000002893 slag Substances 0.000 abstract description 15
- 230000003647 oxidation Effects 0.000 abstract description 9
- 238000007254 oxidation reaction Methods 0.000 abstract description 9
- 230000007797 corrosion Effects 0.000 abstract description 5
- 230000004907 flux Effects 0.000 abstract description 4
- 238000005336 cracking Methods 0.000 abstract description 3
- 238000012795 verification Methods 0.000 abstract 1
- 238000010079 rubber tapping Methods 0.000 description 20
- 238000000034 method Methods 0.000 description 8
- 230000006378 damage Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 6
- 239000011819 refractory material Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000003963 antioxidant agent Substances 0.000 description 4
- 230000003078 antioxidant effect Effects 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- BYFGZMCJNACEKR-UHFFFAOYSA-N aluminium(i) oxide Chemical compound [Al]O[Al] BYFGZMCJNACEKR-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910052863 mullite Inorganic materials 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 2
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002902 bimodal effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910021392 nanocarbon Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000004901 spalling Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- 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
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Abstract
本发明涉及一种大高炉抗侵蚀铁沟浇注料，按照重量百分比，包括致密棕刚玉颗粒58～64份、白刚玉颗粒2～5份、碳化硅16～23份、三氧化二铝微粉5～7份、纯铝酸钙水泥2～3份、二氧化硅微粉2～3份、球状沥青颗粒1.5～2.5份、炭黑粉0.5～1.2份、金属硅粉1.5～3.5份、碳化硼0.2～0.6份、金属铝粉0.1～0.2份、减水剂0.15～0.2份、抗侵蚀剂0.6～1份、防爆纤维0.05～0.08份，本发明所提供的浇注料延长主沟一代沟役的使用寿命，提高铁沟安全运行的稳定性。经验证，能达到快速烘烤不开裂、抗冲刷侵蚀、抗氧化、抗沾渣以及通铁量的要求，不经修补通铁量达18万吨以上，具有良好的应用前景。
Description
技术领域
本发明属于不定型耐火材料技术领域，具体涉及一种大高炉抗侵蚀铁沟浇注料。
背景技术
近年来，钢铁企业逐渐追求大型化，包括大钢包、大转炉、大高炉，对炼铁领域的高炉追求大炉容的同时，冶炼工艺也不断强化，高炉出铁场铁沟是炼铁工艺的重要部分，其中主铁沟的检修周期的长短对钢铁公司有着非常重要的意义。如何在保证安全使用的前提下，保证铁沟材料的使用寿命，延长高炉的定修周期，是一个重要课题。高炉出铁沟是高温铁水和熔渣自高炉炉内流出的通道，主要由主铁沟、支铁沟、渣沟、撇渣器组成，出铁沟材料的耐用性直接影响高炉炼铁的正常生产，其中以主铁沟用耐火材料最为关键。为适应现代化高炉出铁沟日益苛刻的使用条件，提高出铁沟使用寿命，降低耐火材料消耗和人工劳动强度，各国耐火材料工作者对高炉出铁沟衬体材料、种类以及施工方法进行了系列的研制工作，我国也相继开发出了免烘烤铁沟捣打料、快干型铁沟浇注料，其特点是迅速出铁，可节约炉前烘烤时间，但缺点就是使用寿命低，后又研制出Al2O3～SiC～C质浇注料，但使用寿命及通铁量得不到明显提高，因此，大高炉耐侵蚀高炉用铁沟料的研发显得愈发重要。
高炉主铁沟料损毁的主要部分是铁沟侧壁和落铁点，主要表现为机械性损毁(出铁口喷溅渣铁、粘渣引起的机械清理损毁)、化学侵蚀性损毁和机械热应力损毁三种现象。另外，主沟下线维修前要用沟机对主沟残衬进行整体拆除，拆沟强度大，大功率沟机的巨大的机械力和震动力经常会把主沟残衬震裂震酥松，因此需要对铁沟料的抗氧化性及致密度提出较高的要求。为了减轻上述主铁沟料耐材损毁现象的发生，要求主铁沟耐火材料具有耐高温冲刷性能、耐铁水及铁渣化学侵蚀性、抗氧化性、抗热震性能且致密度高强度好等特点，为此申请人亟需提供一种新型Al2O3～SiC～C质的炼铁高炉主铁沟耐火浇注料。
发明内容
本发明的目的在于提供一种大高炉抗侵蚀铁沟浇注料，以满足耐高温冲刷、耐铁水及铁渣化学侵蚀、抗氧化、抗热震、致密性性好等要求，从而延长主沟一代沟役的使用寿命，提高铁沟安全运行的稳定性。
为实现上述目的，本发明所采取的技术方案是：
一种大高炉抗侵蚀铁沟浇注料，按照重量百分比，包括致密棕刚玉颗粒58～64份、白刚玉颗粒2～5份、碳化硅16～23份、三氧化二铝微粉5～7份、纯铝酸钙水泥2～3份、二氧化硅微粉2～3份、球状沥青颗粒1.5～2.5份、炭黑粉0.5～1.2份、金属硅粉1.5～3.5份、碳化硼0.2～0.6份、金属铝粉0.1～0.2份、减水剂0.15～0.2份、抗侵蚀剂0.6～1份、防爆纤维0.05～0.08份。
作为本发明的一些优选实施方案，所述致密棕刚玉颗粒含Al2O3＞95％，Fe2O3＜0.2％，级配比为：粒径为8～15mm的致密棕刚玉颗粒14～16份、粒径为5～8mm的致密棕刚玉颗粒14～16份、粒径为3～5mm的致密棕刚玉颗粒15～16份、粒径为1～3m的致密棕刚玉颗粒15～16份。
作为本发明的一些优选实施方案，所述减水剂为ABC，抗侵蚀剂为ACAO。
作为本发明的一些优选实施方案，所述碳化硅含量≥98％，Fe2O3＜0.2％，级配比如下：粒径0～1mm的碳化硅颗粒5～8份、碳化硅粉粒径200目的碳化硅粉5～6份、粒径325目的碳化硅粉4～6份，粒径＜5µm的碳化硅超微粉2～3份。
作为本发明的一些优选实施方案，所述三氧化二铝微粉含Al2O3＞99.5％、Na2O＜0.1％，粒径≤2µm。
作为本发明的一些优选实施方案，所述二氧化硅微粉含SiO2＞95％，pH值小于4。
作为本发明的一些优选实施方案，所述纯铝酸钙水泥含Al2O3≥70％，CaO≥25％，粒径＜6µm。
作为本发明的一些优选实施方案，所述球状沥青颗粒的固定碳含量≥65%，粒径为0.5～1mm；所述炭黑为N330型的固定碳，含量大于99%，粉粒径＜0.6µm。
作为本发明的一些优选实施方案，所述金属硅粉中Si＞98％，级配比为：粒径325目的金属硅粉0.5～1.5份、粒径1000目的金属硅粉1～2份。
作为本发明的一些优选实施方案，所述白刚玉颗粒的粒径为0～1mm；所述碳化硼的粒径为325目，含B4C＞90％；所述金属铝粉的粒径为200目。
采用上述技术方案所产生的有益效果在于：
（1）本发明通过致密棕刚玉和白刚玉提供主要Al2O3，氧化铝与浇注料中的微硅粉高温下反应生成莫来石相，莫来石相为针柱状，反应产生体积膨胀，能有效阻止熔渣的渗透，同时降低浇注料的显气孔率，提高浇注料耐压强度及热震稳定性。
（2）碳化硅是一种性能优异的耐火材料，具有耐高温、耐侵蚀、高强度、耐磨、热膨胀系数小、导热系数高等优点。本发明采用4种不同级配的碳化硅搭配，使浇注料中的SiC分布更均匀，反应更充分，可有效增加浇注料抗剥落性以及抗渣侵蚀性能。
（3）本发明使用的是球沥青及炭黑的复合碳源，通过炭黑及球沥青提供固定C，碳具有良好的抗渗透性和抗剥落性，其渗入浇注料基质形成弥散分布，均匀分布抑制碳化硅往铁水中的损失，还能抑制浇注料的烧结，防止烧结层过厚而剥落，增强沟料的抗侵蚀性，但是N330型纳米炭黑作为一种增素剂，会使铁沟浇注料流动性变差或者增大浇注料的加水量，使用铁沟浇注料性能劣化，发明人通过使用减水剂ABC，可以很好的使炭黑均匀分散，减少加水量，使浇注料更加致密。
（4）碳化硼粉、不同级配的金属硅粉及斯曼生产的ACAO抗侵蚀剂组成复合防氧化混合物，碳化硼的加入能降低渣的熔点，缓解浇注料粘渣的现象，同时碳化硼可以促进烧结、提高浇注料抗渣侵蚀及抗中温氧化性能；发明采用两种不同级配的金属硅粉配合使用，来改善抗氧化剂的反应活性，可以更好的提高浇注料高温强度及抗高温氧化性能；使用斯曼的ACAO可以很好的提高抗侵蚀性，其粒度很小，在基质中分散后，由于其单位耗氧量大，可以很快的与氧气反应，改善浇注料的及抗氧化及抗侵蚀性。
（5）铝酸钙系水泥可有效提升常温机械性能，提供前期施工强度；CL370氧化铝微粉是一种双峰活性氧化铝，其纯度高，活性大，钠含量低,其细度为d50＜2微米，原晶的晶体直径控制在0.5um左右，可以有效的填充气孔，降低加水量，流动性及强度发展好，促进坯体的致密化与烧结。硅微粉使用951硅微粉，其体积平均粒径D50＜8微米，比表面积大，活性高，可以降低铁沟浇注料的加水量，提高铁沟浇注料的体积密度、冷态强度和热态抗折强度，改善施工性能，降低了渣对浇注料的侵蚀。防爆纤维为中空结构，其为细小纤维状物质，可贯穿于浇注料的各个缝隙中，其熔点为110℃，提升烘烤过程中水蒸气的输导，能在铁沟烘烤过程中促进水蒸气的排出。
（6）金属铝粉为氮气雾化工艺生产的，细度为200目，通过铁沟浇注料中的金属铝粉产生氢气，在浇注料没有产生固化强度的时候发气，打开排气孔，保证了浇注料发气的均匀性及材料高致密程度下的抗爆裂性能；将上述原料进行称量、搅拌、包装即制得到本发明所述的炼铁高炉主铁沟耐火浇注料。
（7）本发明所提供的主铁沟耐火材料具有耐高温冲刷性能、耐铁水及铁渣化学侵蚀性、抗氧化性、抗热震性能且致密度高强度好等特点，延长主沟一代沟役的使用寿命，提高铁沟安全运行的稳定性。经过使用试验，能达到快速烘烤不开裂、抗冲刷侵蚀、抗氧化、抗沾渣以及通铁量的要求，不经修补通铁量达18万吨以上，具有良好的应用前景。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚，下面结合具体实施例对发明进行清楚、完整的描述。
实施例1
配制1080m3高炉铁沟浇注料，其原料配比为：
粒度1~3mm的电熔棕刚玉15份，粒度3~5mm的电熔棕刚玉15份，粒度5~8mm的电熔棕刚玉15份，粒度8~15mm的电熔棕刚玉15份；
粒度0~1mm的白刚玉3份，325目的白刚玉粉2份；
粒度0~1mm的碳化硅7份；200目的碳化硅6份；325目的碳化硅4份；粒径＜5µm的碳化硅超微粉2份；
粒度≤2μm的活性氧化铝CL370微粉6份；
粒径＜6µm的纯铝酸钙水泥微粉2份；
粒度≤8μm的951硅微粉2.5份；
粒度0.5~1mm的球状沥青2份；
炭黑粉（N330）1份；
抗氧化剂金属硅粉325目1.5份；金属硅粉1000目1份；
粒径325目的碳化硼0.4份；
防爆有机纤维0.05份；
金属铝粉防爆剂0.15份；
ABC高效减水剂0.2份；
斯曼ACAO抗侵蚀剂0.8份。
采用的性能检测方法按照现行国家标准或行业标准进行，所得检测结果如下表，上述浇注料在某1080m3高炉铁沟上使用，出铁时间91天，出铁量达18.1万吨，出铁时间提高了11天，提高了高炉工作效率。
实施例2
配制1350m3高炉铁沟浇注料，其原料配比为：
粒度1~3mm的电熔棕刚玉14份，粒度3~5mm的电熔棕刚玉16份，粒度5~8mm的电熔棕刚玉16份，粒度8~15mm的电熔棕刚玉16份；
粒度0~1mm的白刚玉3份；
粒度0~1mm的碳化硅7份；200目的碳化硅5份；325目的碳化硅4份；碳化硅超微粉3份；
粒度≤2μm的活性氧化铝CL370微粉5份；
粒径＜6µm的纯铝酸钙水泥微粉3份；
粒度≤8μm的951硅微粉2.5份；
粒度0.5~1mm的球状沥青2份；
炭黑粉（N330）1份；
抗氧化剂金属硅粉325目1份；金属硅粉1000目1.5份；
碳化硼0.4份；
防爆有机纤维0.05份；
金属铝粉防爆剂0.15份；
ABC高效减水剂0.2份；
斯曼ACAO抗侵蚀剂1份。
采用的性能检测方法按照现行国家标准或行业标准进行，所得检测结果如下表，上述浇注料在某1350m3高炉铁沟上使用，出铁时间97天，出铁量达18.5万吨，出铁时间提高了14天，提高了高炉工作效率。
实施例3
配制2500m3高炉铁沟浇注料，其原料配比为：
粒度1~3mm的电熔棕刚玉16份，粒度3~5mm的电熔棕刚玉16份，粒度5~8mm的电熔棕刚玉14份，粒度8~15mm的电熔棕刚玉16份；
粒度0~1mm的白刚玉5份；
粒度0~1mm的碳化硅5份；200目的碳化硅6份；325目的碳化硅6份；粒径＜5µm的碳化硅超微粉2份；
粒度≤2μm的活性氧化铝CL370微粉6份；
粒径＜6µm的纯铝酸钙水泥微粉2份；
粒度≤8μm的951硅微粉2.5份；
粒度0.5~1mm的球状沥青2.5份；
粒径＜0.6µm的炭黑粉（N330）0.5份；
抗氧化剂金属硅粉325目0.5份；
金属硅粉1000目2份；
碳化硼0.6份；
防爆有机纤维0.05份；
金属铝粉防爆剂0.15份；
ABC高效减水剂0.2份；
斯曼ACAO抗侵蚀剂0.8份。
采用的性能检测方法按照现行国家标准或行业标准进行，所得检测结果如下表，上述浇注料在某2500m3高炉铁沟上使用，出铁时间69天，出铁量达18.9万吨，出铁时间提高了14天，提高了高炉工作效率。
对比例1
与实施例1的区别在于本申请不加炭黑，用等量球沥青代替（球沥青加入量为3份），其余同实施例1，得到的产品性能如下：
对比例2
与实施例2的区别在于本申请不加ACAO，用等量325目金属硅粉代替（325目硅粉加入量为2份），其余同实施例2，得到的产品性能如下：
对比例3
与实施例3的区别在于本申请不加减水剂ABC，用等量六偏磷酸钠代替（六偏磷酸钠加入量为0.2份），其余同实施例3，得到的产品性能如下：
最后应说明的是：以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明实施例技术方案的精神和范围。
Claims (10)
1.一种大高炉抗侵蚀铁沟浇注料，其特征在于，按照重量百分比，包括致密棕刚玉颗粒58～64份、白刚玉颗粒2～5份、325目的白刚玉粉0～2份、碳化硅16～23份、三氧化二铝微粉5～7份、纯铝酸钙水泥2～3份、二氧化硅微粉2～3份、球状沥青颗粒1.5～2.5份、炭黑粉0.5～1.2份、金属硅粉1.5～3.5份、碳化硼0.2～0.6份、金属铝粉0.1～0.2份、减水剂0.15～0.2份、抗侵蚀剂0.6～1份、防爆纤维0.05～0.08份。
2.根据权利要求1所述的一种大高炉抗侵蚀铁沟浇注料，其特征在于，所述致密棕刚玉颗粒含Al2O3＞95％，Fe2O3＜0.2％，级配比为：粒径为8～15mm的致密棕刚玉颗粒14～16份、粒径为5～8mm的致密棕刚玉颗粒14～16份、粒径为3～5mm的致密棕刚玉颗粒15～16份、粒径为1～3m的致密棕刚玉颗粒15～16份。
3.根据权利要求1所述的一种大高炉抗侵蚀铁沟浇注料，其特征在于，所述减水剂为ABC，抗侵蚀剂为ACAO。
4.根据权利要求1所述的一种大高炉抗侵蚀铁沟浇注料，其特征在于，所述碳化硅含量≥98％，Fe2O3＜0.2％，级配比如下：粒径0～1mm的碳化硅颗粒5～8份、碳化硅粉粒径200目的碳化硅粉5～6份、粒径325目的碳化硅粉4～6份，粒径＜5µm的碳化硅超微粉2～3份。
5.根据权利要求1所述的一种大高炉抗侵蚀铁沟浇注料，其特征在于，所述三氧化二铝微粉含Al2O3＞99.5％、Na2O＜0.1％，粒径≤2µm。
6.根据权利要求1所述的一种大高炉抗侵蚀铁沟浇注料，其特征在于，所述二氧化硅微粉含SiO2＞95％，pH值小于4。
7.根据权利要求1所述的一种大高炉抗侵蚀铁沟浇注料，其特征在于，所述纯铝酸钙水泥含Al2O3≥70％，CaO≥25％，粒径＜6µm。
8.根据权利要求1所述的一种大高炉抗侵蚀铁沟浇注料，其特征在于，所述球状沥青颗粒的固定碳含量≥65%，粒径为0.5～1mm；所述炭黑为N330型的固定碳，含量大于99%，粉粒径＜0.6µm。
9.根据权利要求1所述的一种大高炉抗侵蚀铁沟浇注料，其特征在于，所述金属硅粉中Si＞98％，级配比为：粒径325目的金属硅粉0.5～1.5份、粒径1000目的金属硅粉1～2份。
10.根据权利要求1所述的一种大高炉抗侵蚀铁沟浇注料，其特征在于，所述白刚玉颗粒的粒径为0～1mm；所述碳化硼的粒径为325目，含B4C＞90％；所述金属铝粉的粒径为200目。
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