CN111517768A - 一种喷补料及其制备方法 - Google Patents

一种喷补料及其制备方法 Download PDF

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CN111517768A
CN111517768A CN202010336248.0A CN202010336248A CN111517768A CN 111517768 A CN111517768 A CN 111517768A CN 202010336248 A CN202010336248 A CN 202010336248A CN 111517768 A CN111517768 A CN 111517768A
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parts
gunning
gunning mix
reducing agent
water reducing
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金秀明
滕国强
张晓波
王佳宁
丁海瑞
杨少康
任林
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Beijing Lier High Temperature Materials Co Ltd
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Abstract

本发明涉及耐火材料技术领域，具体涉及一种喷补料及其制备方法。所述喷补料包含如下质量份的组分：棕刚玉60～65份，碳化硅13～16份，结合剂13～15份，抗氧化剂5～6份，纤维0.05～0.1份，减水剂0.05～0.15份。本发明所研制的喷补料在铁沟热沟条件下使用，免烘烤，不开裂、不剥落，耐铁水、铁渣侵蚀。且该喷补料施工时间短，工人劳动强度低，施工时无粉尘无异味，对钢铁行业的环保、增效等方面有重要意义。

Description

一种喷补料及其制备方法
技术领域
本发明涉及耐火材料技术领域，尤其涉及一种喷补料及其制备方法。
背景技术
随着冶金技术的不断发展，锅炉等热工设备的有效容积、压力不断升高，导致出铁温度流速不断增大，提高了出铁沟系统的负荷，增大了出铁沟耐火材料的侵蚀程度，并且出铁沟在修补的施工中劳动时间长，强度大并产生大量的烟尘，这与节能环保的发展理论相悖。所以急需一种新的喷补料来提高设备的使用周期，减少施工负荷，并且对环境友好。
目前国内大部分出铁沟所用耐火材料为Al2O3-SiC-C质浇注料。该种材料具有强度高、耐冲刷、使用寿命长等优势。但是，施工为整体浇注导致施工时间较长均在12h以上；施工需7～8名劳动力连续作业，使用人力多、劳动强度大；施工过程中产生大量的粉尘，严重污染环境；施工过程中对震动的位置时间要求严格，施工质量难以控制。采用一种新的且性能优异的喷补料施工对铁沟进行修补是解决上述问题的一种切实可行的办法。
发明内容
本发明的目的在于提供一种喷补料及其制备方法，该喷补料在抗折强度、耐压强度及抗侵蚀性能等方面均达到了优异的效果，很好地解决了现有技术中存在的问题。
为了实现上述发明目的，本发明提供以下技术方案：
本发明提供了一种喷补料，包含如下质量份的组分：棕刚玉60～65份，碳化硅13～16份，结合剂13～15份，抗氧化剂5～6份，纤维0.05～0.1份，减水剂0.05～0.15份。
作为优选，所述棕刚玉的组成为：粒径为0～1mm的组分与粒径为1～3mm的组分质量比为25～35:30～40。
作为优选，所述结合剂包含氧化铝粉、球状沥青和水泥。
作为优选，所述氧化铝粉的粒径为2～4μm。
作为优选，所述氧化铝粉、球状沥青和水泥的质量比为5～7:2～4:4～6。
作为优选，所述抗氧化剂包含质量比为0～0.2:4～6的金属硅粉与锆硅灰。
作为优选，所述纤维为聚丙烯纤维；所述减水剂为聚羧酸减水剂。
本发明还提供了一种喷补料的制备方法，包含如下步骤：
(1)将棕刚玉和结合剂混合，得到第一份混合料；
(2)将第一份混合料、碳化硅、抗氧化剂、纤维和减水剂混合，即得喷补料。
作为优选，所述步骤(1)中棕刚玉和结合剂的混合时间为20～40s。
作为优选，所述步骤(2)中混合的时间为1～3min。
本发明的有益效果是：本发明所研制的喷补料在铁沟热沟条件下使用，铁沟清理表面铁渣后，使用喷补枪，利用半干法喷补技术，将本材料喷补于铁沟需修补的位置。待干燥后可直接出铁，免烘烤，不开裂、不剥落，耐铁水、铁渣侵蚀。且该喷补料施工时间短，工人劳动强度低，施工时无粉尘无异味，很好地解决了现有技术中存在的问题，对钢铁行业的环保、增效等方面有重要意义。
具体实施方式
本发明提供了一种喷补料，包含如下质量份的组分：棕刚玉60～65份，碳化硅13～16份，结合剂13～15份，抗氧化剂5～6份，纤维0.05～0.1份，减水剂0.05～0.15份。
本发明提供的喷补料包含棕刚玉60～65份，优选为61～63份。
在本发明中，所述棕刚玉中Al2O3含量优选≥95wt％，进一步优选≥97wt％。
在本发明中，所述棕刚玉的组成优选为：粒径为0～1mm的组分与粒径为1～3mm的组分质量比优选为25～35:30～40，进一步优选为28～32:34～37。
在本发明中，所述棕刚玉中粒径为0～1mm的组分不包含粒径等于1mm的成分；所述板状刚玉颗粒中粒径为1～3mm的组分包含粒径等于1mm的成分，包含粒径等于3mm的成分。
本发明提供的喷补料包含碳化硅13～16份，优选为14～15份。
在本发明中，所述碳化硅的纯度优选≥97wt％，进一步优选≥99wt％。
本发明提供的喷补料包含结合剂13～15份，优选为14份。
在本发明中，所述结合剂优选包含氧化铝粉、球状沥青和水泥。
在本发明中，所述氧化铝粉的粒径优选为2～4μm，进一步优选2.5～3μm。
在本发明中，所述氧化铝粉、球状沥青和水泥的质量比优选为5～7:2～4:4～6，进一步优选为5.5～6:2.5～3:4.5～5。
本发明提供的喷补料包含抗氧化剂5～6份，优选为5.5份。
在本发明中，所述抗氧化剂优选包含质量比为0～0.2:4～6的金属硅粉与锆硅灰，进一步优选包含质量比为0.1～0.2:4.5～5的金属硅粉与锆硅灰。
本发明提供的喷补料包含纤维0.05～0.1份，优选为0.06～0.08份。
在本发明中，所述纤维优选为聚丙烯纤维。
本发明提供的喷补料包含减水剂0.05～0.15份，优选为0.08～0.12份。
在本发明中，所述减水剂优选为聚羧酸减水剂。
本发明还提供了一种喷补料的制备方法，包含如下步骤：
(1)将棕刚玉和结合剂混合，得到第一份混合料；
(2)将第一份混合料、碳化硅、抗氧化剂、纤维和减水剂混合，即得喷补料。
在本发明中，所述步骤(1)优选先将棕刚玉倒进混砂机内混合20～40s，再将棕刚玉和结合剂混合20～40s，混合时间均进一步优选为25～35s，更进一步优选为30s。
在本发明中，所述步骤(2)中混合的时间优选为1～3min，进一步优选为1.5～2.5min，更进一步优选为2min。
下面结合实施例对本发明提供的一种喷补料及其制备方法进行详细的说明，但是不能把它们理解为对本发明保护范围的限定。
实施例1
取30份粒径为0～1mm的棕刚玉，35份粒径为1～3mm的棕刚玉，17份碳化硅，6份粒径为2～4μm的氧化铝粉，3份球状沥青，5份水泥，0.1份金属硅粉，4.5份锆硅灰，0.05份聚丙烯纤维，0.1份聚羧酸减水剂。将棕刚玉按比例倒进混砂机内混合30s，再加氧化铝粉、球状沥青和水泥混合30s，最后将碳化硅、金属硅粉、锆硅灰、聚丙烯纤维和减水剂放进搅拌机中混合2min，搅拌均匀装袋即可。
实施例2
取27份粒径为0～1mm的棕刚玉，38份粒径为1～3mm的棕刚玉，18份碳化硅，5份粒径为2～4μm的氧化铝粉，3份球状沥青，5份水泥，0.1份金属硅粉，4份锆硅灰，0.05份聚丙烯纤维，0.1份聚羧酸减水剂。将棕刚玉按比例倒进混砂机内混合30s，再加氧化铝粉、球状沥青和水泥混合30s，最后将碳化硅、金属硅粉、锆硅灰、聚丙烯纤维和减水剂放进搅拌机中混合2min，搅拌均匀装袋即可。
实施例3
取33份粒径为0～1mm的棕刚玉，32份粒径为1～3mm的棕刚玉，15份碳化硅，7份粒径为2～4μm的氧化铝粉，3份球状沥青，5份水泥，0.1份金属硅粉，5份锆硅灰，0.05份聚丙烯纤维，0.1份聚羧酸减水剂。将棕刚玉按比例倒进混砂机内混合30s，再加氧化铝粉、球状沥青和水泥混合30s，最后将碳化硅、金属硅粉、锆硅灰、聚丙烯纤维和减水剂放进搅拌机中混合2min，搅拌均匀装袋即可。
实验例1
将实施例1～3所得喷补料与5份水混合，然后置于模具中，制备成40mm×40mm×160mm长方体样块，对样块的性能进行检测，检测结果见表1。
表1喷补料的性能检测结果
Figure BDA0002465847520000041
其中，常温抗折强度和常温耐压强度均是经热处理后冷却至常温测得；线变化率为样块在1450℃条件下烧结3h，冷却后样块尺寸的变化程度；高温抗折强度是在1400℃下烧结0.5h后测得。
在实际应用中，本申请所得喷补料的用法为：使用喷补枪，在枪口处加一定量的水，将本材料通过压缩空气喷补于铁沟需修补的位置，待干燥后可直接出铁。
由以上实施例可知，本发明提供了一种喷补料及其制备方法，该喷补料具有很好的抗折强度、耐压强度及抗侵蚀性能，在铁沟余温下即可干燥硬化，不需烘烤，施工人员少、时间短，同时不产生大量粉尘，很好地解决了现有技术中存在的问题，对钢铁行业的环保、增效等方面有重要意义。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (10)

1.一种喷补料，其特征在于，包含如下质量份的组分：棕刚玉60～65份，碳化硅13～16份，结合剂13～15份，抗氧化剂5～6份，纤维0.05～0.1份，减水剂0.05～0.15份。
2.如权利要求1所述的喷补料，其特征在于，所述棕刚玉的组成为：粒径为0～1mm的组分与粒径为1～3mm的组分质量比为25～35:30～40。
3.如权利要求1所述的喷补料，其特征在于，所述结合剂包含氧化铝粉、球状沥青和水泥。
4.如权利要求3所述的喷补料，其特征在于，所述氧化铝粉的粒径为2～4μm。
5.如权利要求1或3或4所述的喷补料，其特征在于，所述氧化铝粉、球状沥青和水泥的质量比为5～7:2～4:4～6。
6.如权利要求1所述的喷补料，其特征在于，所述抗氧化剂包含质量比为0～0.2:4～6的金属硅粉与锆硅灰。
7.如权利要求1所述的喷补料，其特征在于，所述纤维为聚丙烯纤维；所述减水剂为聚羧酸减水剂。
8.一种权利要求1～7任意一项所述喷补料的制备方法，其特征在于，包含如下步骤：
(1)将棕刚玉和结合剂混合，得到第一份混合料；
(2)将第一份混合料、碳化硅、抗氧化剂、纤维和减水剂混合，即得喷补料。
9.如权利要求8所述的制备方法，其特征在于，所述步骤(1)中棕刚玉和结合剂的混合时间为20～40s。
10.如权利要求8所述的制备方法，其特征在于，所述步骤(2)中混合的时间为1～3min。
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