The invention discloses an aluminum titanate mullite honeycomb ceramics and its preparation method, it is to have a high melting point, low thermal expansion and chemical corrosion resistance, excellent properties of high thermal shock resistance and stability of aluminium titanate mullite composite formed in accordance with the performance requirements of composite materials, and add their own prepared composite plastic modifier and mould designed by mixing, mixing, mixing, extruding, drying, firing at 1450 to 1600 DEG C into honeycomb structure. The preparation method comprises the following steps: clay, alumina, titania, quartz, spinel and other raw materials in wet milling grinding to less than 500 powder, milled powder by filter and vacuum refining mud into mud, with methyl cellulose or polyvinyl plastic adhesive main component the extrusion molding process, and can produce aluminum titanate - mullite ceramic honeycomb. Mainly used in industrial furnace, high temperature regenerative combustion system, oil catalytic cracking, automobile exhaust catalytic purification and other industries.
【技术实现步骤摘要】
本专利技术所属
为硅酸盐材料、工业陶瓷领域。
技术介绍
20世纪90年代初,日本钢管株式会社(NKK)和日本工业炉株式会社(NFK)联合开发了一种新型蓄热器,称为高效陶瓷蓄热系统HRS(High-cycle Regenerative Combustion System)。NKK进行了多次试验,对测得的数据进行了分析。结果发现,预加热后进入燃烧器的空气温度已接近废气排放温度。数据显示,空气预热温度达1300℃、炉内O2含量为11%时NOx排放量是40kg/m3。HRS的开发,不仅实现了烟气余热极限回收及NOx排放量的大幅度降低,而且这种新型燃烧器还引发产生了一种新的燃烧技术—高温空气燃烧技术HTAC(High Temperature AirCombustion)。高温空气燃烧(HTAC)技术的理论意义在于拓宽了人们对温度和氧气浓度关系的认识范围,并从技术上实现了高温条件下大幅度降低氧气浓度的燃烧过程,解决了高温燃烧与NOx生成的矛盾。该技术的主要特征是1.采用高效蓄热式余热回收装置,通过切换使高温烟气和冷空气交替流经蓄热体并进行换热,从而把原来上千度的排烟 ...
【技术保护点】
一种钛酸铝-莫来石质蜂窝陶瓷,其原料组分的质量百分比:粘土,其中氧化铝≥30%45~65%氧化铝25~39%钛白粉,其中氧化钛≥98%8~18%镁铝尖晶石1~5%方石英1~3%。
【技术特征摘要】
【专利技术属性】
技术研发人员:俞浩,徐欣,周志刚,
申请(专利权)人:安徽宁国市先浩高温材料有限公司,
类型:发明
国别省市:34[中国|安徽]
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