CN110642635A - 球形氧化铝微粉在耐火浇注料中的应用 - Google Patents
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Abstract
本发明公开了球形氧化铝微粉在耐火浇注料中的应用,属于耐火浇注料技术领域,所述耐火浇注料包括如下成分及其重量份数:耐火骨料64~70份、胶结料18份、氧化铝微粉0~7份,球形氧化铝微粉0~7份,水泥6份、蓝晶石2份、柠檬酸0.03份、3p0.05份以及防爆纤维0.25份,所述球形氧化铝微粉含有氧化铝、二氧化硅、氧化铁和氧化钠为主要成分,其中氧化铝含量≥99.5%的高岭土生料,二氧化硅含量≤1200ppm,氧化铁含量≤800ppm,氧化钠含量≤3500ppm。本发明解决了现有的耐火浇注料高温使用性能差使用寿命短以及致密性不良且流动性不佳的问题。
Description
技术领域
本发明涉及氧化铝微粉技术领域,尤其涉及球形氧化铝微粉在耐火浇注料中的应用。
背景技术
微粉的使用推动了耐火材料的发展,尤其是氧化铝微粉和二氧化硅微粉在浇注料中的使用,使浇注成型体的含水量下降,致密度提高,二氧化硅微粉的颗粒呈球形,球形颗粒具有较小的比表面积,较大的堆积密度,而且球形颗粒各向同性好、应力应变均匀,球形颗粒摩擦系数小,加入耐火材料基质中时,流动性及充填性好,能有效释放水分,但是,二氧化硅微粉的熔点低,容易引入杂质与基质中的其它组分在高温下反应形成低熔点物相,降低材料的高温使用性能,导致使用寿命较低,而氧化铝微粉具有熔点高,高温稳定性好的特点,但现有的氧化铝微粉其微观形貌大都为是不规则的形状,因此存在着产品致密性不良以及流动性不佳的问题,因此亟需设计球形氧化铝微粉在耐火浇注料中的应用应用于耐火浇注料。
发明内容
本发明的目的是为了解决现有技术中存在的缺点,如:现有的含二氧化硅微粉的耐火浇注料高温使用性能差使用寿命短以及含有氧化铝微粉的耐火浇注料致密性不良且流动性不佳。
为了实现上述目的,本发明采用了如下技术方案:球形氧化铝微粉在耐火浇注料中的应用,所述耐火浇注料包括如下成分及其重量份数:耐火骨料64~70份、胶结料18份、氧化铝微粉0~7份,球形氧化铝微粉0~7份,水泥6份、蓝晶石2份、柠檬酸0.03份、3p0.05份以及防爆纤维0.25份,所述球形氧化铝微粉含有氧化铝、二氧化硅、氧化铁和氧化钠为主要成分,其中氧化铝含量≥99.5%的高岭土生料,二氧化硅含量≤1200ppm,氧化铁含量≤800ppm,氧化钠含量≤3500ppm。
优选的,所述球形氧化铝微粉的粒径位于2~120微米之间。
与现有技术相比,本发明的有益效果是:
1、本发明中球形氧化铝微粉提高了产品的流动性,或是说在相同的流动值下,减少加水量,这就使得浇注料在应用方面具有巨大的优势;
2、本发明中球形氧化铝微粉的加入使得产品更加致密,相同配方时致密度更高,这使浇注料在应用时拥有更高的使用寿命;
3、本发明中球形氧化铝微粉贡献在于对中高温强度的提高,线变化也减小趋势。在高温条件的使用条件下,产品使用寿命会延长很大;
4、本发明拓宽了球形氧化铝的应用领域,弥补了浇注料性能方面的某种缺陷和不足,大大提高了浇注料产品的应用性能。
附图说明
图1为本发明提出的实施例1-7的数据对比图表。
具体实施方式
下面将结合本发明实施例中的附图,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。
在本发明的描述中,需要理解的是,术语“上”、“下”、“前”、“后”、“左”、“右”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发明的限制。
实施例1:球形氧化铝微粉在耐火浇注料中的应用,所述耐火浇注料包括如下成分及其重量份数:耐火骨料64~70份、胶结料18份、氧化铝微粉7份,球形氧化铝微粉0份,水泥6份、蓝晶石2份、柠檬酸0.03份、3p0.05份以及防爆纤维0.25份,所述球形氧化铝微粉含有氧化铝、二氧化硅、氧化铁和氧化钠为主要成分,其中氧化铝含量≥99.5%的高岭土生料,二氧化硅含量≤1200ppm,氧化铁含量≤800ppm,氧化钠含量≤3500ppm;
实施例2:球形氧化铝微粉在耐火浇注料中的应用,所述耐火浇注料包括如下成分及其重量份数:耐火骨料64~70份、胶结料18份、氧化铝微粉6份,球形氧化铝微粉1份,水泥6份、蓝晶石2份、柠檬酸0.03份、3p0.05份以及防爆纤维0.25份,所述球形氧化铝微粉含有氧化铝、二氧化硅、氧化铁和氧化钠为主要成分,其中氧化铝含量≥99.5%的高岭土生料,二氧化硅含量≤1200ppm,氧化铁含量≤800ppm,氧化钠含量≤3500ppm;
实施例3:球形氧化铝微粉在耐火浇注料中的应用,所述耐火浇注料包括如下成分及其重量份数:耐火骨料64~70份、胶结料18份、氧化铝微粉5份,球形氧化铝微粉2份,水泥6份、蓝晶石2份、柠檬酸0.03份、3p0.05份以及防爆纤维0.25份,所述球形氧化铝微粉含有氧化铝、二氧化硅、氧化铁和氧化钠为主要成分,其中氧化铝含量≥99.5%的高岭土生料,二氧化硅含量≤1200ppm,氧化铁含量≤800ppm,氧化钠含量≤3500ppm;
实施例4:球形氧化铝微粉在耐火浇注料中的应用,所述耐火浇注料包括如下成分及其重量份数:耐火骨料64~70份、胶结料18份、氧化铝微粉4份,球形氧化铝微粉3份,水泥6份、蓝晶石2份、柠檬酸0.03份、3p0.05份以及防爆纤维0.25份,所述球形氧化铝微粉含有氧化铝、二氧化硅、氧化铁和氧化钠为主要成分,其中氧化铝含量≥99.5%的高岭土生料,二氧化硅含量≤1200ppm,氧化铁含量≤800ppm,氧化钠含量≤3500ppm;
实施例5:球形氧化铝微粉在耐火浇注料中的应用,所述耐火浇注料包括如下成分及其重量份数:耐火骨料64~70份、胶结料18份、氧化铝微粉3份,球形氧化铝微粉4份,水泥6份、蓝晶石2份、柠檬酸0.03份、3p0.05份以及防爆纤维0.25份,所述球形氧化铝微粉含有氧化铝、二氧化硅、氧化铁和氧化钠为主要成分,其中氧化铝含量≥99.5%的高岭土生料,二氧化硅含量≤1200ppm,氧化铁含量≤800ppm,氧化钠含量≤3500ppm;
实施例6:球形氧化铝微粉在耐火浇注料中的应用,所述耐火浇注料包括如下成分及其重量份数:耐火骨料64~70份、胶结料18份、氧化铝微粉2份,球形氧化铝微粉5份,水泥6份、蓝晶石2份、柠檬酸0.03份、3p0.05份以及防爆纤维0.25份,所述球形氧化铝微粉含有氧化铝、二氧化硅、氧化铁和氧化钠为主要成分,其中氧化铝含量≥99.5%的高岭土生料,二氧化硅含量≤1200ppm,氧化铁含量≤800ppm,氧化钠含量≤3500ppm;
实施例7:球形氧化铝微粉在耐火浇注料中的应用,所述耐火浇注料包括如下成分及其重量份数:耐火骨料64~70份、胶结料18份、氧化铝微粉1份,球形氧化铝微粉6份,水泥6份、蓝晶石2份、柠檬酸0.03份、3p0.05份以及防爆纤维0.25份,所述球形氧化铝微粉含有氧化铝、二氧化硅、氧化铁和氧化钠为主要成分,其中氧化铝含量≥99.5%的高岭土生料,二氧化硅含量≤1200ppm,氧化铁含量≤800ppm,氧化钠含量≤3500ppm;
参考说明书附图1可知:
1、在相同的加水量的条件下,流动性有明显的增加,由197cm增加到221cm,增加12.18%;
2、110℃下,常温的体积密度有所提升,由2.51g/cm3增加到2.55g/cm3。提高了2%;
3、中温后,各项指标及强度没有明显变化;
4、1500℃下,常温的耐压强度增加,由199.9提高到211.6,提高了6%;
综上,球形氧化铝微粉提高了产品的流动性,或是说在相同的流动值下,减少加水量,这就使得浇注料在应用方面具有巨大的优势,球形氧化铝微粉的加入使得产品更加致密,相同配方时致密度更高,这使浇注料在应用时拥有更高的使用寿命,球形氧化铝微粉贡献在于对中高温强度的提高,线变化也减小趋势,在高温条件的使用条件下,产品使用寿命会延长很大,拓宽了球形氧化铝的应用领域,弥补了浇注料性能方面的某种缺陷和不足,大大提高了浇注料产品的应用性能。
以上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,根据本发明的技术方案及其发明构思加以等同替换或改变,都应涵盖在本发明的保护范围之内。
Claims (2)
1.球形氧化铝微粉在耐火浇注料中的应用,其特征在于,所述耐火浇注料包括如下成分及其重量份数:耐火骨料64~70份、胶结料18份、氧化铝微粉0~7份,球形氧化铝微粉0~7份,水泥6份、蓝晶石2份、柠檬酸0.03份、3p0.05份以及防爆纤维0.25份,所述球形氧化铝微粉含有氧化铝、二氧化硅、氧化铁和氧化钠为主要成分,其中氧化铝含量≥99.5%的高岭土生料,二氧化硅含量≤1200ppm,氧化铁含量≤800ppm,氧化钠含量≤3500ppm。
2.根据权利要求1所述的耐火浇注料,其特征在于,所述球形氧化铝微粉的粒径位于2~120微米之间。
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CN116143529A (zh) * | 2022-10-03 | 2023-05-23 | 广西庆荣耐火材料有限公司 | 一种环保型铁沟浇注料及其制备方法 |
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CN116143529A (zh) * | 2022-10-03 | 2023-05-23 | 广西庆荣耐火材料有限公司 | 一种环保型铁沟浇注料及其制备方法 |
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CN115626815A (zh) * | 2022-11-14 | 2023-01-20 | 天津泽希矿产加工有限公司 | 一种基于球形微粉的耐火浇注料及其制备工艺 |
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