CN107512920A - 一种直接还原窑炉高温带用耐火浇注料及其制备方法 - Google Patents
一种直接还原窑炉高温带用耐火浇注料及其制备方法 Download PDFInfo
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- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 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 claims abstract description 12
- 229910052863 mullite Inorganic materials 0.000 claims abstract description 12
- 239000004568 cement Substances 0.000 claims abstract description 11
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 239000010431 corundum Substances 0.000 claims abstract description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 17
- 239000000843 powder Substances 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 239000010432 diamond Substances 0.000 claims description 3
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- 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 claims description 3
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 3
- 239000003638 chemical reducing agent Substances 0.000 claims description 2
- 239000006185 dispersion Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000011819 refractory material Substances 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 4
- 239000012535 impurity Substances 0.000 abstract description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 229910000863 Ferronickel Inorganic materials 0.000 description 1
- 229910003978 SiClx Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
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Abstract
本发明提出了一种直接还原窑炉高温带用耐火浇注料的制备方法,解决了现有技术中回转窑的耐火材料使用寿命低、制备方法复杂的问题,一种直接还原窑炉高温带用耐火浇注料,包括如下重量份的原料:刚玉5~50份,莫来石15~80份,水泥1~30份,抗CO侵蚀剂1~20份,莫来石具有耐高温、强度高导热系数小、抗热震稳定性好等特点。通过添加抗CO侵蚀剂提高材料的致密度,阻止CO与耐火材料中的部分杂质反应,提高材料的使用寿命。
Description
技术领域
本发明涉及回转窑的耐火材料技术领域,特别是指一种直接还原窑炉高温带用耐火浇注料的制备方法。
背景技术
目前直接还原窑炉普遍采用高铝质砖或者普通矾土质高铝浇注料。由于在直接还原窑炉炉内气氛为还原气氛,在运行过程中产生一氧化碳与耐火材料的部分杂质发生还原反应而导致碳沉积,碳沉积带来的体积膨胀破坏了耐火材料的内部结构,而导致耐火材料出现开裂甚至粉碎性破坏,一般的使用寿命为1年左右,甚至几个月即损坏。耐火材料的频繁损坏和修补,严重影响直接还原产品的生产。
发明内容
本发明提出一种直接还原窑炉高温带用耐火浇注料的制备方法,解决了现有技术中回转窑的耐火材料使用寿命低、制备方法复杂的问题。
本发明的技术方案是这样实现的:一种直接还原窑炉高温带用耐火浇注料,包括如下重量份的原料:
刚玉5~50份,莫来石15~80份,水泥1~30份,抗CO侵蚀剂1~20份。
优选的,所述刚玉为棕刚玉、白刚玉或板状刚玉的一种或几种,其粒径大于325目。
优选的,所述莫来石为烧结莫来石或电熔莫来石,其粒径大于325目。
优选的,所述水泥为粒径小于0.1mm的70水泥或925水泥。
优选的,所述CO侵蚀剂选自氧化铝微粉、二氧化硅微粉、高效分散氧化铝微粉、碳化硅微粉、玻璃粉中的一种或几种。
优选的,所述减水剂为三聚磷酸钠或六偏磷酸钠或FS10,其粒径小于1mm。
本发明又提出一种直接还原窑炉高温带用耐火浇注料的制备方法,其特征在于,包括以下步骤:按用量取各种原料,混合后搅拌均匀,即得。
本发明的有益效果:
本发明提供直接还原窑炉高温带用耐火浇注料中,Al2O3含量大于5%,体积密度大于2.4g/cm3。该直接还原窑炉高温带用耐火浇注料具有优异的导热性能和耐压强度。
本发明提供的直接还原窑炉高温带用耐火浇注料可以应用于直接还原窑炉的加热或还原带的施工或维修。直接还原窑炉炉为本领域常用窑炉,如直接还原铁转底炉、直接还原镍铁回转窑。
将本发明所述直接还原窑炉高温带用耐火浇注料应用于直接还原窑炉的加热或还原带,材料寿命可达4年以上。
与现有技术相比,本发明提供直接还原窑炉高温带用耐火浇注料强度高、致密度高、耐磨损,使用寿命长。
具体实施方式
下面将对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
实施例1
本实施例提供了一种直接还原窑炉高温带用耐火浇注料,其包括如下用量的成分:
对所述直接还原窑炉高温带用耐火浇注料进行检测,Al2O3含量为73%,体积密度为2.70g/cm3,110℃耐压强度为150MPa,1000℃耐压强度为120MPa。
本实施例进一步提供了所述材料的制备方法,具体为:按用量取各原料,混合后搅拌均匀,即可。
实施例2
本实施例提供了一种直接还原窑炉高温带用耐火浇注料,其包括如下用量的成分:
对所述直接还原窑炉高温带用耐火浇注料进行检测,Al2O3含量为75%,体积密度为2.75g/cm3,110℃耐压强度为160MPa,1000℃耐压强度为130MPa。
直接还原窑炉高温带用耐火浇注料的制备方法同实施例1。
实施例3
本实施例提供了一种直接还原窑炉高温带用耐火浇注料,其包括如下用量的成分:
对所述直接还原窑炉高温带用耐火浇注料进行检测,Al2O3含量为82%,体积密度为2.95g/cm3,110℃耐压强度为170MPa,1000℃耐压强度为150MPa。
直接还原窑炉高温带用耐火浇注料的制备方法同实施例1。
实施例4
本实施例提供了的直接还原窑炉高温带用耐火浇注料,与实施例1相比,区别仅在于:用棕刚玉代替板状刚玉。
实施例5
本实施例提供了的直接还原窑炉高温带用耐火浇注料,与实施例1相比,区别仅在于:用烧结莫来石代替电熔莫来石。
实施例6
本实施例提供了的直接还原窑炉高温带用耐火浇注料,与实施例1相比,区别仅在于:用氧化铝微粉代替碳化硅微粉。
实施例7
本实施例提供了的直接还原窑炉高温带用耐火浇注料,与实施例1相比,区别仅在于:用925水泥代替70水泥。
实施例8
本实施例提供了的直接还原窑炉高温带用耐火浇注料,与实施例1相比,区别仅在于:用六偏磷酸纳代替三聚磷酸钠。
实施例9
本实施例提供了的直接还原窑炉高温带用耐火浇注料,与实施例1相比,区别仅在于:玻璃粉代替碳化硅微粉。
经检测,实施例4~9提供的直接还原窑炉高温带用耐火浇注料强度高、致密度高,耐磨性好,抗CO侵蚀性好,应用在直接还原窑炉加热或还原带寿命可达4年;但综合性能均略差于实施例1~3提供的直接还原窑炉高温带用耐火浇注料。
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (7)
1.一种直接还原窑炉高温带用耐火浇注料,其特征在于,包括如下重量份的原料:
刚玉5~50份,莫来石15~80份,水泥1~30份,抗CO侵蚀剂1~20份。
2.如权利要求1所述的一种直接还原窑炉高温带用耐火浇注料,其特征在于,
所述刚玉为棕刚玉、白刚玉或板状刚玉的一种或几种,其粒径大于325目。
3.如权利要求1所述的一种直接还原窑炉高温带用耐火浇注料,其特征在于,
所述莫来石为烧结莫来石或电熔莫来石,其粒径大于325目。
4.如权利要求1所述的一种直接还原窑炉高温带用耐火浇注料,其特征在于,
所述水泥为粒径小于0.1mm的70水泥或925水泥。
5.如权利要求1所述的一种直接还原窑炉高温带用耐火浇注料,其特征在于,
所述CO侵蚀剂选自氧化铝微粉、二氧化硅微粉、高效分散氧化铝微粉、碳化硅微粉、玻璃粉中的一种或几种。
6.如权利要求1所述的一种直接还原窑炉高温带用耐火浇注料,其特征在于,
所述减水剂为三聚磷酸钠或六偏磷酸钠或FS10,其粒径小于1mm。
7.如权利要求1至6中任一项所述的一种直接还原窑炉高温带用耐火浇注料的制备方法,其特征在于,包括以下步骤:按用量取各种原料,混合后搅拌均匀,即得。
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Cited By (6)
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CN108046837A (zh) * | 2018-01-30 | 2018-05-18 | 黎文泰 | 一种钢包用耐火浇注料及其制备方法 |
CN110156445A (zh) * | 2019-05-29 | 2019-08-23 | 濮阳濮耐高温材料(集团)股份有限公司 | 一种转底炉用高强耐磨浇注料及其制备方法 |
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CN114656264A (zh) * | 2022-02-10 | 2022-06-24 | 安徽宁火新材料有限公司 | 一种盐浴淬火炉用高强度浇注料 |
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CN106518109A (zh) * | 2016-10-27 | 2017-03-22 | 北京利尔高温材料股份有限公司 | 加热炉用长寿命抗渣耐火浇注料及其应用 |
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CN106518109A (zh) * | 2016-10-27 | 2017-03-22 | 北京利尔高温材料股份有限公司 | 加热炉用长寿命抗渣耐火浇注料及其应用 |
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CN108046837A (zh) * | 2018-01-30 | 2018-05-18 | 黎文泰 | 一种钢包用耐火浇注料及其制备方法 |
CN110156445A (zh) * | 2019-05-29 | 2019-08-23 | 濮阳濮耐高温材料(集团)股份有限公司 | 一种转底炉用高强耐磨浇注料及其制备方法 |
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CN114656264A (zh) * | 2022-02-10 | 2022-06-24 | 安徽宁火新材料有限公司 | 一种盐浴淬火炉用高强度浇注料 |
CN114656264B (zh) * | 2022-02-10 | 2023-04-21 | 安徽宁火新材料有限公司 | 一种盐浴淬火炉用高强度浇注料 |
CN114874018A (zh) * | 2022-06-15 | 2022-08-09 | 平玉英 | 一种工业窑炉保温节能型高温耐火材料及制备方法 |
CN116813359A (zh) * | 2023-06-28 | 2023-09-29 | 武汉威林科技股份有限公司 | 一种浇注料及其制备方法和应用 |
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