CN106116477B - 一种焚烧炉用耐火砖的制备方法 - Google Patents

一种焚烧炉用耐火砖的制备方法 Download PDF

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CN106116477B
CN106116477B CN201610517199.4A CN201610517199A CN106116477B CN 106116477 B CN106116477 B CN 106116477B CN 201610517199 A CN201610517199 A CN 201610517199A CN 106116477 B CN106116477 B CN 106116477B
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董苏荣
曹林慧
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Zhejiang Rongxing New Material Technology Co.,Ltd.
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Abstract

本发明公开了一种焚烧炉用耐火砖的制备方法,大量采用造纸白泥渣、秸秆以及回收钢厂耐火砖为原料,制备的耐火砖,外层为致密的耐火砖结构,可以起到良好的耐火作用,中间层为隔音隔热层,成本低,效果好,符合国家可持续发展战略要求。

Description

一种焚烧炉用耐火砖的制备方法
技术领域
本发明涉及耐火材料技术领域,尤其涉及一种使用回收料制备焚烧炉用耐火砖的制备方法。
背景技术
焚烧炉是常用于医疗及生活废品、动物无害化处理方面的一种无害化处理设备。其原理是利用煤、燃油、燃气等燃料的燃烧,将要处理的物体进行高温的焚毁碳化,以达到消毒的目的。焚烧炉原理是利用煤、燃油、燃气等燃料的燃烧,将要处理的物体进行高温的焚毁碳化,以达到消毒的目的。
目前,焚烧炉在患病害的动物尸体无害化处理以及医疗废弃物、有毒有害固体废弃物处理方面有较大的应用价值。
以动物的焚烧为例,说明利用焚烧炉进行无害化处理的操作步骤:
1、注入燃料,接通电源,启动助燃开关,炉内温度达到自燃温度,将病害畜禽肉尸及其产品投入炉内,关闭助燃开关,启动自燃开关,病害肉体保持自燃状态不能剖割的病害畜禽尸体整体投入焚烧炉中,启动自燃开关,尸体自燃至完全碳化为止。
2、整尸焚毁:不能剖割的病害畜禽尸体整体投入焚烧炉中,启动自燃开关,尸体自燃至完全碳化为止。
3、肉尸分割焚毁:允许分割的病害肉品分割后投入焚烧炉中,启动自燃开关,肉块自燃至完全碳化为止。
4、脏器焚毁:病害畜禽脏器整体投入焚烧炉中,启动助燃开关,使脏器在助燃状态下燃烧至完全碳化为止。
5、焚烧后的碳化物需要选择地点(远离水源地和居民区)进行掩埋,彻底杜绝病菌的传播。
随着现代医学的不断发展,各种化学试剂已经越来越多的应用于医疗卫生行业,这对焚烧炉的耐火砖在耐酸碱腐蚀、耐磨等性能上提出了新的要求,同时为了响应国家节能减排的要求,有必要对耐火砖的隔热性能做出进一步改善。
发明内容
基于背景技术存在的技术问题,本发明提出了一种焚烧炉用耐火砖的制备方法,有效利用了回收秸秆、回收钢厂耐火砖,降低了生产成本,符合国家可持续发展战略要求,可用于建筑外墙。
本发明提出一种焚烧炉用耐火砖的制备方法,包含以下步骤:
步骤一:将回收钢厂耐火砖,反复机械粉碎后,过200目筛,取筛下物,制成耐火砖细粉;过50目筛,取筛下物,制成耐火砖颗粒;
步骤二:将秸秆制成20-40cm长度段,用重物碾压消除秸秆应力,将秸秆反复粉碎,最终成为3cm以下的细条;
步骤三:将造纸白泥渣与秸秆细条以及耐火砖颗粒搅拌均匀,在压砖机上在50T压力条件下,压制成型,制成耐火砖的中间层预制砖坯;
步骤四:将造纸白泥渣、耐火砖细粉及改性复合添加剂搅拌均匀,在压砖机上在500T压力条件下,压制成型,制成耐火砖的外层预制砖坯;
步骤五:按照外层-中间层-外层的结构将外层和中间层预制砖坯上下排列好,并在外层与中间层的连接面之间涂抹一层3-5mm的造纸白泥渣,在50T压力条件下,压制成型,制成砖坯;
步骤六:将砖坯烘干后,放入300-500℃高温烧结1-2小时,后升温至1200℃烧结2-3小时成砖。
优选的,所述回收钢厂耐火砖的主要成分为刚玉、尖晶石、电熔镁砂、活性氧化铝微粉、纯铝酸钙水泥、喷雾铝粉和防爆纤维。
优选的,所述的造纸白泥渣的主要成分为碳酸钙,同时含有部分反应未完全的氢氧化钙、二氧化硅和残碱,固含量为40-70%。
优选的,所述步骤三的中间层预制砖坯的厚度为5-20cm,长和宽为12-50cm。
优选的,所述步骤四的外层预制砖坯的厚度为10-30cm,长和宽为12-50cm。
优选的,所述步骤三中造纸白泥渣与秸秆细条以及耐火砖颗粒的质量百分比为2-5:10-15:5-25。
优选的,所述步骤四中造纸白泥渣与耐火砖细粉的质量百分比为1:15-30。
优选的,所属步骤四中改性复合添加剂包含以下成分:二氧化钼、玻璃纤维、尼龙纤维、膨胀蛭石粉。
本发明中,加入改性复合添加剂的作用是将这些添加剂与回收钢厂耐火砖中的主要成分反应,提高耐火砖外层的耐磨、耐腐蚀性能,延长耐火砖的使用寿命。
本发明中,造纸白泥渣主要起到各原料之间的链接作用。
本发明中,中间层的主要成分是造纸白泥渣与秸秆细条以及耐火砖颗粒,秸秆细条为中空纤维结构,能起到良好的隔音隔热效果,加入耐火砖颗粒,可以有效的填充到秸秆周围,增加砖的密度和强度。
本方案相比于传统方案的有益之处在于:本发明大量使用回收原料,外层为致密的耐火砖结构,可以起到良好的耐火作用,加入改性复合添加剂,可以提高耐火砖的耐磨、耐腐蚀性能,中间层为隔音隔热层,可以降低热量流失,成本低,效果好,符合国家可持续发展战略要求。
具体实施方式
实施例1:
本发明提出一种焚烧炉用耐火砖的制备方法,包含以下步骤:
步骤一:将回收钢厂耐火砖,反复机械粉碎后,过200目筛,取筛下物,制成耐火砖细粉;过50目筛,取筛下物,制成耐火砖颗粒;
步骤二:将秸秆制成20-40cm长度段,用重物碾压消除秸秆应力,将秸秆反复粉碎,最终成为3cm以下的细条;
步骤三:将造纸白泥渣与秸秆细条以及耐火砖颗粒搅拌均匀,在压砖机上在50T压力条件下,压制成型,制成耐火砖的中间层预制砖坯;所述中间层预制砖坯的厚度为10cm,长和宽分别为30和15cm;所述造纸白泥渣与秸秆细条以及耐火砖颗粒的质量百分比为2:12:25。
步骤四:将造纸白泥渣、耐火砖细粉和改性复合添加剂搅拌均匀,在压砖机上在500T压力条件下,压制成型,制成耐火砖的外层预制砖坯;所述外层预制砖坯的厚度为20cm,长和宽分别为30和15cm;造纸白泥渣与耐火砖细粉以及改性复合添加剂的质量百分比为1:25:4。所述的改性复合添加剂包含以下质量百分比的成分,二氧化钼:玻璃纤维:尼龙纤维:膨胀蛭石粉=8%:25%:47%:20%。
步骤五:按照外层-中间层-外层的结构将外层和中间层预制砖坯上下排列好,并在外层与中间层的连接面之间涂抹一层3-5mm的造纸白泥渣,在50T压力条件下,压制成型,制成砖坯;
步骤六:将砖坯烘干后,放入400℃高温烧结1小时,后升温至1200℃烧结2.5小时成砖。
所述回收钢厂耐火砖的主要成分为刚玉、尖晶石、电熔镁砂、活性氧化铝微粉、纯铝酸钙水泥、喷雾铝粉和防爆纤维。
所述的造纸白泥渣的主要成分为碳酸钙,同时含有部分反应未完全的氢氧化钙、二氧化硅和残碱,固含量为40-70%。
实施例2:
本发明提出一种焚烧炉用耐火砖的制备方法,包含以下步骤:
步骤一:将回收钢厂耐火砖,反复机械粉碎后,过200目筛,取筛下物,制成耐火砖细粉;过50目筛,取筛下物,制成耐火砖颗粒;
步骤二:将秸秆制成20-40cm长度段,用重物碾压消除秸秆应力,将秸秆反复粉碎,最终成为3cm以下的细条;
步骤三:将造纸白泥渣与秸秆细条以及耐火砖颗粒搅拌均匀,在压砖机上在50T压力条件下,压制成型,制成耐火砖的中间层预制砖坯;所述中间层预制砖坯的厚度为15cm,长和宽分别为30和25cm;所述造纸白泥渣与秸秆细条以及耐火砖颗粒的质量百分比为2:11:7。
步骤四:将造纸白泥渣与耐火砖细粉搅拌均匀,在压砖机上在500T压力条件下,压制成型,制成耐火砖的外层预制砖坯;所述外层预制砖坯的厚度为20cm,长和宽分别为30和25cm;造纸白泥渣、耐火砖细粉以及改性复合添加剂的质量百分比为1:20:6。所述的改性复合添加剂包含以下质量百分比的成分,二氧化钼:玻璃纤维:尼龙纤维:膨胀蛭石粉=6%:15%:39%:40%。
步骤五:按照外层-中间层-外层的结构将外层和中间层预制砖坯上下排列好,并在外层与中间层的连接面之间涂抹一层3-5mm的造纸白泥渣,在50T压力条件下,压制成型,制成砖坯;
步骤六:将砖坯烘干后,放入400℃高温烧结1小时,后升温至1200℃烧结2.5小时成砖。
所述回收钢厂耐火砖的主要成分为刚玉、尖晶石、电熔镁砂、活性氧化铝微粉、纯铝酸钙水泥、喷雾铝粉和防爆纤维。
所述的造纸白泥渣的主要成分为碳酸钙,同时含有部分反应未完全的氢氧化钙、二氧化硅和残碱,固含量为40-70%。
实施例3:
本发明提出一种焚烧炉用耐火砖的制备方法,包含以下步骤:
步骤一:将回收钢厂耐火砖,反复机械粉碎后,过200目筛,取筛下物,制成耐火砖细粉;过50目筛,取筛下物,制成耐火砖颗粒;
步骤二:将秸秆制成20-40cm长度段,用重物碾压消除秸秆应力,将秸秆反复粉碎,最终成为3cm以下的细条;
步骤三:将造纸白泥渣与秸秆细条以及耐火砖颗粒搅拌均匀,在压砖机上在50T压力条件下,压制成型,制成耐火砖的中间层预制砖坯;所述中间层预制砖坯的厚度为5cm,长和宽分别为50和25cm;所述造纸白泥渣与秸秆细条以及耐火砖颗粒的质量百分比为2:12:25。
步骤四:将造纸白泥渣与耐火砖细粉搅拌均匀,在压砖机上在500T压力条件下,压制成型,制成耐火砖的外层预制砖坯;所述外层预制砖坯的厚度为18cm,长和宽分别为50和25cm;造纸白泥渣与耐火砖细粉的质量百分比为1:30。造纸白泥渣、耐火砖细粉以及改性复合添加剂的质量百分比为1:18:2。所述的改性复合添加剂包含以下质量百分比的成分,二氧化钼:玻璃纤维:尼龙纤维:膨胀蛭石粉=7%:29%:39%:25%。
步骤五:按照外层-中间层-外层的结构将外层和中间层预制砖坯上下排列好,并在外层与中间层的连接面之间涂抹一层3-5mm的造纸白泥渣,在50T压力条件下,压制成型,制成砖坯;
步骤六:将砖坯烘干后,放入300℃高温烧结1.5小时,后升温至1200℃烧结2小时成砖。
所述回收钢厂耐火砖的主要成分为刚玉、尖晶石、电熔镁砂、活性氧化铝微粉、纯铝酸钙水泥、喷雾铝粉和防爆纤维。
所述的造纸白泥渣的主要成分为碳酸钙,同时含有部分反应未完全的氢氧化钙、二氧化硅和残碱,固含量为40-70%。
对实施例1-3进行检测:
此检测数据只针对上述检测样品。
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 (1)

1.一种焚烧炉用耐火砖的制备方法,其特征在于,包含以下步骤:
步骤一:将回收钢厂耐火砖,反复机械粉碎后,过200目筛,取筛下物,制成耐火砖细粉;过50目筛,取筛下物,制成耐火砖颗粒;
步骤二:将秸秆制成20-40cm长度段,用重物碾压消除秸秆应力,将秸秆反复粉碎,最终成为3cm以下的细条;
步骤三:将造纸白泥渣与秸秆细条以及耐火砖颗粒搅拌均匀,在压砖机上在50T压力条件下,压制成型,制成耐火砖的中间层预制砖坯;
步骤四:将造纸白泥渣、耐火砖细粉及改性复合添加剂搅拌均匀,在压砖机上在500T压力条件下,压制成型,制成耐火砖的外层预制砖坯;
步骤五:按照外层-中间层-外层的结构将外层和中间层预制砖坯上下排列好,并在外层与中间层的连接面之间涂抹一层3-5mm的造纸白泥渣,在50T压力条件下,压制成型,制成砖坯;
步骤六:将砖坯烘干后,放入300-500℃高温烧结1-2小时,后升温至1200℃烧结2-3小时成砖;
所述回收钢厂耐火砖的主要成分为刚玉、尖晶石、电熔镁砂、活性氧化铝微粉、纯铝酸钙水泥、喷雾铝粉和防爆纤维;
所述的造纸白泥渣的主要成分为碳酸钙,同时含有部分反应未完全的氢氧化钙、二氧化硅和残碱,固含量为40-70%;
所述步骤三的中间层预制砖坯的厚度为5-20cm,长和宽为12-50cm;
所述步骤四的外层预制砖坯的厚度为10-30cm,长和宽为12-50cm;
所述步骤三中造纸白泥渣与秸秆细条以及耐火砖颗粒的质量百分比为2-5:10-15:5-25;
所述步骤四中造纸白泥渣与耐火砖细粉的质量百分比为1:15-30;
所述步骤四中改性复合添加剂包含以下成分:二氧化钼、玻璃纤维、尼龙纤维、膨胀蛭石粉。
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