CN107056261A - 一种耐火浇注料 - Google Patents

一种耐火浇注料 Download PDF

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CN107056261A
CN107056261A CN201710438007.5A CN201710438007A CN107056261A CN 107056261 A CN107056261 A CN 107056261A CN 201710438007 A CN201710438007 A CN 201710438007A CN 107056261 A CN107056261 A CN 107056261A
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castable refractory
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王虎
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Hefei Ming Yu High Temperature Technology Co Ltd
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Abstract

本发明公开了一种耐火浇注料，属于浇注料技术领域，包括以下重量份的原料：包括以下重量份的原料：刚玉43‑50份、尖晶石12‑14份、锆英石4‑6份、石墨7‑11份、石英粉25‑27份、蛭石6‑9份、陶粒15‑18份、氧化铍6‑12份、水泥16‑20份、金属纤维2‑5份、稀土1‑3份、外加剂2‑8份；本发明具有较佳地机械性能，耐火能力强，硬度高，抗压抗折能力优秀。

Description

一种耐火浇注料
技术领域
本发明涉及浇注料技术领域，具体的说，涉及了一种耐火浇注料。
背景技术
耐火材料分为定型耐火材料和不定型耐火材料。不定型耐火材料通常指浇注料，是由多种骨料或集料和一种或多种粘和剂组成的混合粉状颗料，使用时必须和一种或多种液体配合搅拌均匀，具有较强的流动性和可塑性。
浇注料是一种由耐火物质制成的粒状和粉状材料，并加入一定量结合剂和水分共同组成。它具有较高的流动性，适宜用浇注方法施工，并无需加热即可硬化的不定形耐火材料。由耐火骨料、粉料、结合剂、外加剂、水或其他液体材料组成。一般在使用现场以浇注、震动或捣固的方法浇筑成型，也可以制成预制件使用。
辊底炉广泛用于冶金及机械工业，是连铸连轧生产线的关键工序设备，其炉辊在高温中托着被加热的工件转动，以利于工件的加工。国内的连铸连轧生产线辊底炉炉辊大部分从国外整体进口，进口的炉辊采用耐火纤维绳缠绕加耐火喷漆涂料或者采用耐火浇注料震动成型两种方法制做。目前存在的主要问题是：（1）采用耐火纤维绳缠绕加耐火喷漆涂料制作的炉辊，制做工艺复杂，制出的炉辊强度低，抗震动性能差，不耐高温烟气冲刷，使用寿命低，并且使用前必须烘烤，投资大，占地面积也大；（2）采用耐火浇注料制作的炉辊，制作工艺简单，使用前不必烘烤，所用的耐火浇注料的主要成分为Al2O3、SiO2、CaO、 TiO2、ZrO2、Na2O、K2O等。但上述炉辊在使用过程中经常出现炸裂，影响炉辊的使用寿命，使用寿命只有6个月左右。
在公开号CN1958519的专利文件中，公开了一种用于辊底炉炉辊的耐火浇注料，由电熔莫来石、焦宝石、莫来石、堇青石、蓝晶石、氧化硅微粉、氧化铝微粉、高铝水泥、不锈钢纤维、防爆纤维、三聚磷酸钠、水组成，用该发明浇注成的炉辊与现有技术浇注成的炉辊相比，浇注料具有良好的流动性，便于炉辊的成型。由于炉辊抗爆裂性能和热稳定性非常好，能够适应辊底炉内温度的急剧变化，对高温烟气有较高的抵抗能力，炉辊的使用寿命可达1年以上，同时本发明所使用的各种材料均可从市场上购买，降低了炉辊的生产成本，但该浇注料的耐火能力不足，硬度不足，抗压抗折强度较差。
发明内容
本发明的目的在于克服上述现有技术的不足，提供了一种耐火浇注料，具有较佳地机械性能，耐火能力强，硬度高，抗压抗折能力优秀。
本发明提供的一种耐火浇注料，包括以下重量份的原料：
刚玉43-50份、尖晶石12-14份、锆英石4-6份、石墨7-11份、石英粉25-27份、蛭石6-9份、陶粒15-18份、氧化铍6-12份、水泥16-20份、金属纤维2-5份、稀土1-3份、外加剂2-8份。
作为优选，刚玉、尖晶石、锆英石、蛭石、陶粒的粒径均有3-5mm和1-3mm的两种颗粒级。
作为优选，石墨、石英粉、氧化铍的目数均在80-150目之间。
作为优选，水泥为纯铝酸钙水泥或超高铝电熔水泥。
作为优选，金属纤维为不锈钢纤维、铝纤维、黄铜纤维和铸铁纤维中的一种或二种以上的混合物，金属纤维的长度为2-8mm，径长1mm。
作为优选，外加剂包括减水剂、分散剂和膨胀剂，三者之间的重量比为5:3:1。
作为优选，减水剂为木质素磺酸钙、木质素磺酸钠、木质素磺酸镁中一种或二种以上的混合物，分散剂为三聚磷酸钠、六偏磷酸钠和焦磷酸钠中一种或二种以上的混合物，膨胀剂为蓝晶石粉和硅线石粉，两者之间的重量比为2:1。
作为优选，稀土为碳酸氯化稀土。
本发明的一种耐火浇注料，具有较佳地机械性能，耐火能力强，硬度高，抗压抗折能力优秀，具体的有益效果如下：
（1）、刚玉、尖晶石、锆英石、蛭石、陶粒、金属纤维作为浇注料的骨料，石墨、石英粉、氧化铍作为粉料，对应比例的骨料和粉料的配合使得浇注料内缝隙小，堆积密度大，而且骨料和粉料具有较强的耐火能力，硬度高，使得浇注料的抗压强度、拉伸强度、抗弯强度、冲击强度、韧性、冲击韧性等性能均得到较大提高；
（2）、尖晶石可用热处理改善颜色，蓝色者在900℃加热变成绿色，加热到1200℃变成黄色。这种改色效果稳定，从而使得浇注料能够变色，方便对温度的观察；锆英石具有较佳的化学稳定性，较低的热膨胀性、较高的导热性，这均能增加浇注料的性能；
（3）、水泥和粘土作为粘结剂，能有效地使骨料和粉料粘合，减水剂能减少混合的用水量，分散剂能使各原料之间的混合更充分、更均匀，这就增加了浇注料的机械性能。
具体实施方式
以下结合具体实施例对发明作进一步详细的描述。
实施例1
本实施例的一种耐火浇注料，包括以下重量份的原料：
刚玉43份、尖晶石12份、锆英石4份、石墨7份、石英粉25份、蛭石6份、陶粒15份、氧化铍6份、水泥16份、金属纤维2份、稀土1份、外加剂2份。
本实施例中，刚玉、尖晶石、锆英石、蛭石、陶粒的粒径均有3mm和1mm的两种颗粒级。
本实施例中，石墨、石英粉、氧化铍的目数均在80目之间。
本实施例中，水泥为纯铝酸钙水泥或超高铝电熔水泥。
本实施例中，金属纤维为不锈钢纤维、铝纤维、黄铜纤维和铸铁纤维的混合物，金属纤维的长度为2mm，径长1mm。
本实施例中，外加剂包括减水剂、分散剂和膨胀剂，三者之间的重量比为5:3:1。
本实施例中，减水剂为木质素磺酸钙、木质素磺酸钠、木质素磺酸镁的混合物，分散剂为三聚磷酸钠、六偏磷酸钠和焦磷酸钠的混合物，膨胀剂为蓝晶石粉和硅线石粉，两者之间的重量比为2:1。
本实施例中，稀土为碳酸氯化稀土。
实施例2
本实施例的一种耐火浇注料，包括以下重量份的原料：
刚玉46份、尖晶石13份、锆英石5份、石墨9份、石英粉26份、蛭石8份、陶粒17份、氧化铍9份、水泥18份、金属纤维3份、稀土2份、外加剂5份。
本实施例中，刚玉、尖晶石、锆英石、蛭石、陶粒的粒径均有4mm和2mm的两种颗粒级。
本实施例中，石墨、石英粉、氧化铍的目数均在120目之间。
本实施例中，水泥为纯铝酸钙水泥或超高铝电熔水泥。
本实施例中，金属纤维为不锈钢纤维、铝纤维、黄铜纤维和铸铁纤维的混合物，金属纤维的长度为5mm，径长1mm。
本实施例中，外加剂包括减水剂、分散剂和膨胀剂，三者之间的重量比为5:3:1。
本实施例中，减水剂为木质素磺酸钙、木质素磺酸钠、木质素磺酸镁的混合物，分散剂为三聚磷酸钠、六偏磷酸钠和焦磷酸钠的混合物，膨胀剂为蓝晶石粉和硅线石粉，两者之间的重量比为2:1。
本实施例中，稀土为碳酸氯化稀土。
实施例3
本实施例的一种耐火浇注料，包括以下重量份的原料：
刚玉50份、尖晶石14份、锆英石6份、石墨11份、石英粉27份、蛭石9份、陶粒18份、氧化铍12份、水泥20份、金属纤维5份、稀土3份、外加剂8份。
本实施例中，刚玉、尖晶石、锆英石、蛭石、陶粒的粒径均有5mm和3mm的两种颗粒级。
本实施例中，石墨、石英粉、氧化铍的目数均在150目之间。
本实施例中，水泥为纯铝酸钙水泥或超高铝电熔水泥。
本实施例中，金属纤维为不锈钢纤维、铝纤维、黄铜纤维和铸铁纤维的混合物，金属纤维的长度为8mm，径长1mm。
本实施例中，外加剂包括减水剂、分散剂和膨胀剂，三者之间的重量比为5:3:1。
本实施例中，减水剂为木质素磺酸钙、木质素磺酸钠、木质素磺酸镁的混合物，分散剂为三聚磷酸钠、六偏磷酸钠和焦磷酸钠的混合物，膨胀剂为蓝晶石粉和硅线石粉，两者之间的重量比为2:1。
本实施例中，稀土为碳酸氯化稀土。
实施例4
本实施例的一种耐火浇注料，包括以下重量份的原料：
刚玉43份、尖晶石14份、锆英石4份、石墨8份、石英粉25份、蛭石7份、陶粒17份、氧化铍11份、水泥16份、金属纤维5份、稀土3份、外加剂4份。
本实施例中，刚玉、尖晶石、锆英石、蛭石、陶粒的粒径均有4mm和1mm的两种颗粒级。
本实施例中，石墨、石英粉、氧化铍的目数均在140目之间。
本实施例中，水泥为纯铝酸钙水泥或超高铝电熔水泥。
本实施例中，金属纤维为不锈钢纤维、铝纤维、黄铜纤维和铸铁纤维的混合物，金属纤维的长度为3mm，径长1mm。
本实施例中，外加剂包括减水剂、分散剂和膨胀剂，三者之间的重量比为5:3:1。
本实施例中，减水剂为木质素磺酸钙、木质素磺酸钠、木质素磺酸镁的混合物，分散剂为三聚磷酸钠、六偏磷酸钠和焦磷酸钠的混合物，膨胀剂为蓝晶石粉和硅线石粉，两者之间的重量比为2:1。
本实施例中，稀土为碳酸氯化稀土。
根据JC/T 498-2013检测标准，实施例1-3的性能测试结果如下：
实施例1 实施例2 实施例3 实施例4 JC/T 498-2013
常温耐压强度，MPa 1500℃×3h烘干后 240.4 242.5 241.7 243.0 ≥120
常温抗折强度，MPa 1500℃×3h烘干后 19.4 20.1 18.9 19.8 ≥10
体积密度，g/cm3 110℃×24h烘干后 3.82 3.91 3.92 3.88 ≥2.90
从上表可以看出，实施例1-3均优于JC/T 498-2013的标准，具有较佳地抗压抗折能力，硬度高。
以上所述仅是本发明的优选实施方式，本发明的保护范围并不仅局限于上述实施例，凡属于本发明思路下的技术方案均属于本发明的保护范围。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前提下的若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (8)

1.一种耐火浇注料，其特征在于：包括以下重量份的原料：
刚玉43-50份、尖晶石12-14份、锆英石4-6份、石墨7-11份、石英粉25-27份、蛭石6-9份、陶粒15-18份、氧化铍6-12份、水泥16-20份、金属纤维2-5份、稀土1-3份、外加剂2-8份。
2.根据权利要求1所述的耐火浇注料，其特征在于：刚玉、尖晶石、锆英石、蛭石、陶粒的粒径均有3-5mm和1-3mm的两种颗粒级。
3.根据权利要求1所述的耐火浇注料，其特征在于：石墨、石英粉、氧化铍的目数均在80-150目之间。
4.根据权利要求1所述的耐火浇注料，其特征在于：水泥为纯铝酸钙水泥或超高铝电熔水泥。
5.根据权利要求1所述的耐火浇注料，其特征在于：金属纤维为不锈钢纤维、铝纤维、黄铜纤维和铸铁纤维中的一种或二种以上的混合物，金属纤维的长度为2-8mm，径长1mm。
6.根据权利要求5所述的耐火浇注料，其特征在于：外加剂包括减水剂、分散剂和膨胀剂，三者之间的重量比为5:3:1。
7.根据权利要求1所述的耐火浇注料，其特征在于：减水剂为木质素磺酸钙、木质素磺酸钠、木质素磺酸镁中一种或二种以上的混合物，分散剂为三聚磷酸钠、六偏磷酸钠和焦磷酸钠中一种或二种以上的混合物，膨胀剂为蓝晶石粉和硅线石粉，两者之间的重量比为2:1。
8.根据权利要求1所述的耐火浇注料，其特征在于：稀土为碳酸氯化稀土。
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CN108863417A (zh) * 2018-08-23 2018-11-23 安徽瑞泰新材料科技有限公司 一种耐磨耐火浇注料
CN109020517A (zh) * 2018-08-23 2018-12-18 安徽瑞泰新材料科技有限公司 一种耐火浇注料的制备方法
CN111548175A (zh) * 2020-06-22 2020-08-18 焦作诺尔曼炉业有限公司 一种低膨胀率抗热震耐侵蚀高强浇注料
CN113354431A (zh) * 2021-07-28 2021-09-07 唐山弘联硕实业有限公司 一种复合隔热型耐火砖及其制备设备
CN115650748A (zh) * 2022-11-21 2023-01-31 北京联合荣大工程材料股份有限公司 纤维增强耐火浇注料及其制备方法

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CN108863417A (zh) * 2018-08-23 2018-11-23 安徽瑞泰新材料科技有限公司 一种耐磨耐火浇注料
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CN115650748A (zh) * 2022-11-21 2023-01-31 北京联合荣大工程材料股份有限公司 纤维增强耐火浇注料及其制备方法

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