CN110963807A - 一种用于水泥窑过渡带的节能型莫来石质耐火砖及其制备方法 - Google Patents

一种用于水泥窑过渡带的节能型莫来石质耐火砖及其制备方法 Download PDF

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CN110963807A
CN110963807A CN201911186604.9A CN201911186604A CN110963807A CN 110963807 A CN110963807 A CN 110963807A CN 201911186604 A CN201911186604 A CN 201911186604A CN 110963807 A CN110963807 A CN 110963807A
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向若飞
朱国平
王立旺
朱其良
王琪
李新明
彭晶晶
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Zhejiang Kingcred New Material Co ltd
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Abstract

本发明涉及一种用于水泥窑过渡带的节能型莫来石质耐火砖,包含以下各组分及重量份:预处理莫来石多孔骨料40~50份、碳化硅颗粒10~15份、锆英石细粉10~15、板状刚玉细粉10~15份、氧化铝粉5~10份、Si粉4~8份、Al粉1~3份、结合剂4~8份;其制备方法包括配料、成型、干燥及烧成步骤。本发明制备工艺简单,所制得的耐火砖成本低、环保、节能效果好。

Description

一种用于水泥窑过渡带的节能型莫来石质耐火砖及其制备 方法
技术领域
本发明属于耐火材料技术领域,具体涉及一种用于水泥窑过渡带的节能型莫来石质耐火砖及其制备方法。
背景技术
水泥被广泛的应用于工业建筑、民用建筑、交通工程、水泥工程、海港工程、核电工程、国防建设等新型工业和工程建设等领域,是国家工程建设和人民生活中不可缺少的重要基本材料。新型干法水泥制造工艺以其高效和均化等特点,以及在控制和管理方面的突出优势正在逐步取代湿法、老式干法及半干法生产工艺,而成为现代水泥工业生产的主流发展方向。回转窑作为新型干法水泥生产工艺线的主要耗能设备之一,是煤粉燃烧、物料反应、物质运输的重要场所。由于水泥窑烧成带耐火炉衬可在高温下形成导热系数较低的窑皮,因此,水泥窑过渡带成为整个水泥回转窑散热最为严重的区域。
专利号为ZL201610637867.7的中国专利公开了一种莫来石碳化硅复相耐火材料及其制备方法,以涂层包覆轻质莫来石骨料和涂层包覆碳化硅骨料等原料制备了具有低导热特点的莫来石碳化硅耐火材料,然而包覆涂层的工艺中使用了锂辉石等低熔点原料,不利于高温力学性能。申请号为201711253662.X的中国专利申请公开了一种抗腐蚀水泥窑过渡带用氮化硼复合镁铝尖晶石砖及其制备方法,提供了一种具有良好抗腐蚀效果的水泥窑过渡带用材料,其主要缺陷在于引入了铬元素,使用过程中形成的六价铬污染环境。申请号为201710979456.0的中国专利申请公开了一种低导热高抗蚀刚玉质耐火砖及其制备方法,以六铝酸钙等原料生产用于水泥窑过渡带的低导热耐火砖,但是添加了大量的稀有金属氧化物,成本昂贵。
发明内容
本发明所要解决的技术问题在于一种成本低、环保、节能效果好的用于水泥窑过渡带的节能型莫来石质耐火砖及其制备方法。
为解决上述技术问题,本发明提供的一种用于水泥窑过渡带的节能型莫来石质耐火砖,包含以下各组分及重量份:
优选地,所述预处理莫来石多孔骨料包括粒度为5~3mm、3~1mm、1~0mm三种规格,各种规格的重量份如下:
5~3mm预处理莫来石多孔骨料 19~23份
3~1mm预处理莫来石多孔骨料 10~13份
1~0mm预处理莫来石多孔骨料 11~14份。
优选地,所述预处理莫来石多孔骨料Al2O3的质量百分含量不小于70%;体积密度不大于1.65g/cm3;显气孔率不小于40%;耐压强度不小于60Mpa。
优选地,所述预处理莫来石多孔骨料的制备方法是将莫来石多孔骨料浸泡在固含量不小于30%的氧化铝溶胶中,浸泡时间为12小时,浸泡后的莫来石多孔骨料过滤,在200℃温度下烘干,得到预处理莫来石多孔骨料。
优选地,所述碳化硅颗粒包括粒度为1~0.5mm、0.5~0mm二种规格,各种规格的重量份如下:
1~0.5mm碳化硅颗粒 6~8份
0.5~0mm碳化硅颗粒 4~7份。
优选地,所述锆英石细粉的粒度小于80μm。
优选地,所述板状刚玉细粉的粒度小于45μm。
优选地,所述氧化铝粉的粒度小于10μm。
优选地,所述结合剂为黄糊精溶液和木质素磺酸钙溶液中的一种。
所述的用于水泥窑过渡带的节能型莫来石质耐火砖的制备方法,包含以下步骤:
A、配料:将预处理莫来石多孔骨料和颗粒与结合剂按比例混合均匀后,再按比例加入粉料搅拌形成均匀料;
B、成型:将步骤A形成的均匀料加入模具中,机压成型,且机压成型时预处理莫来石多孔骨料的破损率不大于5%;
C、干燥及烧成:将步骤B形成的坯体经100~120℃烘干后,装窑于1350~1450℃保温8~12h形成成品。
本发明的有益效果在于:本发明的原材料不含重金属,环保且广泛易得,成本低;通过引入预处理莫来石多孔骨料,提高了耐火砖的节能效果,不降低使用寿命;利用锆英石的分解过程堵塞气孔,减少侵蚀通道;在基质中引入板状刚玉细粉,提高耐火砖基质的致密化程度。
具体实施方式
实施例1
一种用于水泥窑过渡带的节能型莫来石质耐火砖,包含以下各组分及重量份:
其中,所述预处理莫来石多孔骨料Al2O3的质量百分含量不小于70%;体积密度不大于1.65g/cm3;显气孔率不小于40%;耐压强度不小于60Mpa,所述预处理莫来石多孔骨料的制备方法是将莫来石多孔骨料浸泡在固含量不小于30%的氧化铝溶胶中,浸泡时间为12小时,浸泡后的莫来石多孔骨料过滤,在200℃温度下烘干,得到预处理莫来石多孔骨料。
上述用于水泥窑过渡带的节能型莫来石质耐火砖的制备方法,包含以下步骤:
A、配料:将预处理莫来石多孔骨料和颗粒与结合剂按比例混合均匀后,再按比例加入粉料搅拌形成均匀料;
B、成型:将步骤A形成的均匀料加入模具中,机压成型,且机压成型时预处理莫来石多孔骨料的破损率不大于5%;
C、干燥及烧成:将步骤B形成的坯体经100~120℃烘干后,装窑于1350~1450℃保温8~12h形成成品。
实施例2
一种用于水泥窑过渡带的节能型莫来石质耐火砖,包含以下各组分及重量份:
其中,所述预处理莫来石多孔骨料Al2O3的质量百分含量不小于70%;体积密度不大于1.65g/cm3;显气孔率不小于40%;耐压强度不小于60Mpa,所述预处理莫来石多孔骨料的制备方法是将莫来石多孔骨料浸泡在固含量不小于30%的氧化铝溶胶中,浸泡时间为12小时,浸泡后的莫来石多孔骨料过滤,在200℃温度下烘干,得到预处理莫来石多孔骨料。
上述用于水泥窑过渡带的节能型莫来石质耐火砖的制备方法,包含以下步骤:
A、配料:将预处理莫来石多孔骨料和颗粒与结合剂按比例混合均匀后,再按比例加入粉料搅拌形成均匀料;
B、成型:将步骤A形成的均匀料加入模具中,机压成型,且机压成型时预处理莫来石多孔骨料的破损率不大于5%;
C、干燥及烧成:将步骤B形成的坯体经100~120℃烘干后,装窑于1350~1450℃保温8~12h形成成品。
实施例3
一种用于水泥窑过渡带的节能型莫来石质耐火砖,包含以下各组分及重量份:
其中,所述预处理莫来石多孔骨料Al2O3的质量百分含量不小于70%;体积密度不大于1.65g/cm3;显气孔率不小于40%;耐压强度不小于60Mpa,所述预处理莫来石多孔骨料的制备方法是将莫来石多孔骨料浸泡在固含量不小于30%的氧化铝溶胶中,浸泡时间为12小时,浸泡后的莫来石多孔骨料过滤,在200℃温度下烘干,得到预处理莫来石多孔骨料。
上述用于水泥窑过渡带的节能型莫来石质耐火砖的制备方法,包含以下步骤:
A、配料:将预处理莫来石多孔骨料和颗粒与结合剂按比例混合均匀后,再按比例加入粉料搅拌形成均匀料;
B、成型:将步骤A形成的均匀料加入模具中,机压成型,且机压成型时预处理莫来石多孔骨料的破损率不大于5%;
C、干燥及烧成:将步骤B形成的坯体经100~120℃烘干后,装窑于1350~1450℃保温8~12h形成成品。
实施例4
一种用于水泥窑过渡带的节能型莫来石质耐火砖,包含以下各组分及重量份:
其中,所述预处理莫来石多孔骨料Al2O3的质量百分含量不小于70%;体积密度不大于1.65g/cm3;显气孔率不小于40%;耐压强度不小于60Mpa,所述预处理莫来石多孔骨料的制备方法是将莫来石多孔骨料浸泡在固含量不小于30%的氧化铝溶胶中,浸泡时间为12小时,浸泡后的莫来石多孔骨料过滤,在200℃温度下烘干,得到预处理莫来石多孔骨料。
上述用于水泥窑过渡带的节能型莫来石质耐火砖的制备方法,包含以下步骤:
A、配料:将预处理莫来石多孔骨料和颗粒与结合剂按比例混合均匀后,再按比例加入粉料搅拌形成均匀料;
B、成型:将步骤A形成的均匀料加入模具中,机压成型,且机压成型时预处理莫来石多孔骨料的破损率不大于5%;
C、干燥及烧成:将步骤B形成的坯体经100~120℃烘干后,装窑于1350~1450℃保温8~12h形成成品。
上述实施例1-4所制备的用于水泥窑过渡带的节能型莫来石质耐火砖性能如下:
由上述性能指标可知,本发明所制备的用于水泥窑过渡带的节能型莫来石质性能良好且隔热效果优异。
本发明的原材料不含重金属,环保且广泛易得,成本低;通过引入预处理莫来石多孔骨料,提高了耐火砖的节能效果,不降低使用寿命;利用锆英石的分解过程堵塞气孔,减少侵蚀通道;在基质中引入板状刚玉细粉,提高耐火砖基质的致密化程度。
上述说明是示例性的而非限制性的。通过上述说明本领域技术人员可以意识到本发明的许多种改变和变形,其也将落在本发明的实质和范围之内。

Claims (10)

1.一种用于水泥窑过渡带的节能型莫来石质耐火砖,其特征在于,包含以下各组分及重量份:
2.根据权利要求1所述的用于水泥窑过渡带的节能型莫来石质耐火砖,其特征在于,所述预处理莫来石多孔骨料包括粒度为5~3mm、3~1mm、1~0mm三种规格,各种规格的重量份如下:
5~3mm预处理莫来石多孔骨料 19~23份
3~1mm预处理莫来石多孔骨料 10~13份
1~0mm预处理莫来石多孔骨料 11~14份。
3.根据权利要求1或2所述的水泥窑过渡带的节能型莫来石质耐火砖,其特征在于,所述预处理莫来石多孔骨料Al2O3的质量百分含量不小于70%;体积密度不大于1.65g/cm3;显气孔率不小于40%;耐压强度不小于60Mpa。
4.根据权利要求1-3任意一条所述的水泥窑过渡带的节能型莫来石质耐火砖,其特征在于,所述预处理莫来石多孔骨料的制备方法是将莫来石多孔骨料浸泡在固含量不小于30%的氧化铝溶胶中,浸泡时间为12小时,浸泡后的莫来石多孔骨料过滤,在200℃温度下烘干,得到预处理莫来石多孔骨料。
5.根据权利要求1所述的用于水泥窑过渡带的节能型莫来石质耐火砖,其特征在于,所述碳化硅颗粒包括粒度为1~0.5mm、0.5~0mm二种规格,各种规格的重量份如下:
1~0.5mm碳化硅颗粒 6~8份
0.5~0mm碳化硅颗粒 4~7份。
6.根据权利要求1所述的用于水泥窑过渡带的节能型莫来石质耐火砖,其特征在于,所述锆英石细粉的粒度小于80μm。
7.根据权利要求1所述的用于水泥窑过渡带的节能型莫来石质耐火砖,其特征在于,所述板状刚玉细粉的粒度小于45μm。
8.根据权利要求1所述的用于水泥窑过渡带的节能型莫来石质耐火砖,其特征在于,所述氧化铝粉的粒度小于10μm。
9.根据权利要求1所述的用于水泥窑过渡带的节能型莫来石质耐火砖,其特征在于,所述结合剂为黄糊精溶液和木质素磺酸钙溶液中的一种。
10.一种如权利要求1所述的用于水泥窑过渡带的节能型莫来石质耐火砖的制备方法,其特征在于,包含以下步骤:
A、配料:将预处理莫来石多孔骨料和颗粒与结合剂按比例混合均匀后,再按比例加入粉料搅拌形成均匀料;
B、成型:将步骤A形成的均匀料加入模具中,机压成型,且机压成型时预处理莫来石多孔骨料的破损率不大于5%;
C、干燥及烧成:将步骤B形成的坯体经100~120℃烘干后,装窑于1350~1450℃保温8~12h形成成品。
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