CN107721442A - 一种高强度高荷软中铝合成料及其制备方法 - Google Patents
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Abstract
本发明属于耐火材料技术领域,特别涉及一种高强度高荷软中铝合成料及其制备方法。本发明主要解决现有工业窑炉得耐火制品存在的荷重软化温度低、综合使用效益差的技术问题。本发明的技术方案是:一种高强度高荷软中铝合成料,其由下述重量百分比的原料配制而成:高铝矾土生料50~70%、石英砂微粉22~48%、高纯度微硅粉1~10%。一种高强度高荷软中铝合成料的制备方法,包括以下步骤:1)研磨;2)高压成型制坯;3)干燥;4)高温烧制;5)冷却、破碎。本发明具有高强度、低气孔率、高荷软、高抗热震稳定性等优点。
Description
技术领域
本发明属于耐火材料技术领域,特别涉及一种高强度高荷软中铝合成料及其制备方法。
背景技术
我国矾土资源丰富,应用范围广、消耗量大,但相当一部分被用于生产各类窑炉用普通高铝砖。而由于普通高铝砖虽然Al2O3含量高,但用于高温工业窑炉时,其荷重软化温度不够理想,制约了窑炉长寿化推广工作,也不利于我国发展低碳经济、节能降耗工作的推广。
发明内容
本发明的目的在于克服现有技术的缺点,提供一种高强度高荷软中铝合成料及其制备方法,解决现有工业窑炉得耐火制品存在的荷重软化温度低、综合使用效益差的技术问题。
本发明是通过以下技术方案实现的:
一种高强度高荷软中铝合成料,其由下述重量百分比的原料配制而成:高铝矾土生料50~70%、石英砂微粉22~48%、高纯度微硅粉1~10%。
进一步,所述高铝矾土生料灼烧减量后Al2O3的含量≥88%、TiO2的含量≤4.0%、Fe2O3的含量≤1.5%;所述石英砂微粉中SiO2的含量≥99%,所述石英砂微粉的粒径≤5μm;所述高纯度微硅粉中SiO2的含量≥97%,所述石英砂微粉的粒径≤1μm。
一种高强度高荷软中铝合成料的制备方法,包括以下步骤:
1)研磨:将重量百分比为50~70%的高铝矾土生料、重量百分比为22~48%的石英砂微粉、重量百分比为1~10%的高纯度微硅粉加入研磨机中研磨至粒度小于0.045mm的粉料;
2)高压成型制坯:将步骤1)中的粉料加入真空液压成型设备中,在120Mpa的压力下制得料坯;
3)干燥:将步骤2)中制得的料坯放入90~120℃的干燥炉中干燥10~16h,干燥完成后的水分含量≤1%;
4)高温烧制:干燥完成后将料坯放入1450~1550℃的窑炉中烧制6~10小时;
5)冷却、破碎:烧制后炉冷至室温后破碎至所需粒度即可。
所述高铝矾土生料灼烧减量后Al2O3的含量≥88%、TiO2的含量≤4.0%、Fe2O3的含量≤1.5%;所述石英砂微粉中SiO2的含量≥99%,所述石英砂微粉的粒径≤5μm;所述高纯度微硅粉中SiO2的含量≥97%,所述石英砂微粉的粒径≤1μm。
本发明实现了利用现有常规资源生产高级耐火原料,大幅提升现有工业窑炉用耐火制品性能;产品生产成本低、质量可控,所制备的高强度高荷软中铝合成料主晶相为莫来石,次晶相为刚玉、石英相;产品气孔率低、体积密度大,具有很好的耐磨性能和耐压强度,具备比现有制品明显提升的荷软温度,可广泛应用于水泥、石化、焦化等各类工业窑炉领域。
因此,与背景技术相比,本发明具有高强度、低气孔率、高荷软、高抗热震稳定性等优点。
具体实施方式
下面将结合实施例对本发明的技术方案进行清楚、完整地描述。
实施例1
本实施例中的一种高强度高荷软中铝合成料,其由下述重量百分比的原料配制而成:高铝矾土生料50%、石英砂微粉48%、高纯度微硅粉2%。
所述高铝矾土生料灼烧减量后Al2O3的含量≥88%、TiO2的含量≤4.0%、Fe2O3的含量≤1.5%;所述石英砂微粉中SiO2的含量≥99%,所述石英砂微粉的粒径≤5μm;所述高纯度微硅粉中SiO2的含量≥97%,所述石英砂微粉的粒径≤1μm。
一种高强度高荷软中铝合成料的制备方法,包括以下步骤:
1)研磨、除铁:将重量百分比为50%的高铝矾土生料、重量百分比为48%的石英砂微粉、重量百分比为2%的高纯度微硅粉加入研磨机中研磨至粒度小于0.045mm的粉料;
2)高压成型制坯:将步骤1)中的粉料加入真空液压成型设备中,在120Mpa的压力下制得料坯;
3)干燥:将步骤2)中制得的料坯放入90~120℃的干燥炉中干燥10~16h,干燥完成后的水分含量≤1%;
4)高温烧制:干燥完成后将料坯放入1450~1550℃的窑炉中烧制6~10小时;
5)冷却、破碎:烧制后炉冷至室温后破碎至所需粒度即可。
实施例2
本实施例中的一种高强度高荷软中铝合成料,其由下述重量百分比的原料配制而成:高铝矾土生料70%、石英砂微粉29%、高纯度微硅粉1%。
所述高铝矾土生料灼烧减量后Al2O3的含量≥88%、TiO2的含量≤4.0%、Fe2O3的含量≤1.5%;所述石英砂微粉中SiO2的含量≥99%,所述石英砂微粉的粒径≤5μm;所述高纯度微硅粉中SiO2的含量≥97%,所述石英砂微粉的粒径≤1μm。
一种高强度高荷软中铝合成料的制备方法,包括以下步骤:
1)研磨、除铁:将重量百分比为70%的高铝矾土生料、重量百分比为29的石英砂微粉、重量百分比为1%的高纯度微硅粉加入研磨机中研磨至粒度小于0.045mm的粉料;
2)高压成型制坯:将步骤1)中的粉料加入真空液压成型设备中,在120Mpa的压力下制得料坯;
3)干燥:将步骤2)中制得的料坯放入90~120℃的干燥炉中干燥10~16h,干燥完成后的水分含量≤1%;
4)高温烧制:干燥完成后将料坯放入1450~1550℃的窑炉中烧制6~10小时;
5)冷却、破碎:烧制后炉冷至室温后破碎至所需粒度即可。
实施例3
本实施例中的一种高强度高荷软中铝合成料,其由下述重量百分比的原料配制而成:高铝矾土生料68%、石英砂微粉22%、高纯度微硅粉10%。
所述高铝矾土生料灼烧减量后Al2O3的含量≥88%、TiO2的含量≤4.0%、Fe2O3的含量≤1.5%;所述石英砂微粉中SiO2的含量≥99%,所述石英砂微粉的粒径≤5μm;所述高纯度微硅粉中SiO2的含量≥97%,所述石英砂微粉的粒径≤1μm。
一种高强度高荷软中铝合成料的制备方法,包括以下步骤:
1)研磨、除铁:将重量百分比为68%的高铝矾土生料、重量百分比为22%的石英砂微粉、重量百分比为10%的高纯度微硅粉加入研磨机中研磨至粒度小于0.045mm的粉料;
2)高压成型制坯:将步骤1)中的粉料加入真空液压成型设备中,在120Mpa的压力下制得料坯;
3)干燥:将步骤2)中制得的料坯放入90~120℃的干燥炉中干燥10~16h,干燥完成后的水分含量≤1%;
4)高温烧制:干燥完成后将料坯放入1450~1550℃的窑炉中烧制6~10小时;
5)冷却、破碎:烧制后炉冷至室温后破碎至所需粒度即可。
本发明能够以多种形式具体实施而不脱离发明的精神或实质,所以应当理解,上述实施例不限于前述的细节,而应在权利要求所限定范围内广泛地解释,因此落入权利要求或其等效范围内的变化和改型都应为权利要求所涵盖。
Claims (4)
1.一种高强度高荷软中铝合成料,其特征在于:其由下述重量百分比的原料配制而成:高铝矾土生料50~70%、石英砂微粉22~48%、高纯度微硅粉1~10%。
2.根据权利要求1所述的高强度高荷软中铝合成料,其特征在于:所述高铝矾土生料灼烧减量后Al2O3的含量≥88%、TiO2的含量≤4.0%、Fe2O3的含量≤1.5%;所述石英砂微粉中SiO2的含量≥99%,所述石英砂微粉的粒径≤5μm;所述高纯度微硅粉中SiO2的含量≥97%,所述石英砂微粉的粒径≤1μm。
3.一种如根据权利要求1所述的高强度高荷软中铝合成料的制备方法,其特征在于:包括以下步骤:
1)研磨、除铁:将重量百分比为50~70%的高铝矾土生料、重量百分比为22~48%的石英砂微粉、重量百分比为1~10%的高纯度微硅粉加入研磨机中研磨至粒度小于0.045mm的粉料;
2)高压成型制坯:将步骤1)中的粉料加入真空液压成型设备中,在120Mpa的压力下制得料坯;
3)干燥:将步骤2)中制得的料坯放入90~120℃的干燥炉中干燥10~16h,干燥完成后的水分含量≤1%;
4)高温烧制:干燥完成后将料坯放入1450~1550℃的窑炉中烧制6~10小时;
5)冷却、破碎:烧制后炉冷至室温后破碎至所需粒度即可。
4.根据权利要求3所述的高强度高荷软中铝合成料的制备方法,其特征在于:所述高铝矾土生料灼烧减量后Al2O3的含量≥88%、TiO2的含量≤4.0%、Fe2O3的含量≤1.5%;
所述石英砂微粉中SiO2的含量≥99%,所述石英砂微粉的粒径≤5μm;
所述高纯度微硅粉中SiO2的含量≥97%,所述石英砂微粉的粒径≤1μm。
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