The present invention provides a refractory castable for the lining of aluminium hydroxide gas suspension baking furnace. It is a mixture of fine grain by a good crystal structure and development of coke sapphire chamotte calcination process and sintering of mullite and binder and composite additive according to different proportions, the furnace, oven, furnace main aluminum hydroxide gas suspension calciner sintered body lining. Among them, the percentage composition of raw materials: pyrojewel clinker content less than 3mm is 27 ~ 33%, particle size of pyrojewel clinker content 3 5mm was 25 ~ 30%, pyrojewel clinker content between grain size between 5mm and 8mm is 8 ~ 15%; the particle size is less than 0.074mm fine grained mullite the content of 15 ~ 25%; P binder using activated alumina - Al: 2 O: 3, its content is 5 ~ 8%; high dispersion oxidation of alpha Al: 2 O: 3 superfine powder and silica SiO: 2 the ultra fine powder content is 2 ~ 5% using compound additives, superfine particle size less than 5 mu m; sodium phosphate trimer content ranged from 0.1 to 0.3%.
【技术实现步骤摘要】
本专利技术涉及一种用于氢氧化铝气体悬浮焙烧炉炉衬耐火潘注料,特别是以细晶莫来石为基质,焦宝石熟料为颗粒料,a-Al刀3和Si02超微粉为复合添加 剂,以P-AI2Q,作为结合剂组成的炉衬材料,适合于氢氧化铝气体悬浮焙烧炉主 炉体的特殊工矿条件要求。技术背景目前,国内还没有该种产品专业化的生产厂家。大部分氢氧化铝生产企业 的焙烧炉主炉体炉衬耐火材料,还是采用两种粒度的高铝熟料大致比例混合后, 用液体水玻璃作为结合剂,通过混合一搅拌一绕注一烘烤而成。这种方法工艺 粗糙,性能低劣,烧结成的炉衬材料使用寿命短,经常停炉检修,严重影响生 产。主要表现在中高温强度低,抗热震性差,体积稳定性不好,不耐磨损冲刷, 而且施工和运输成本较高。有关资料显示,氢氧化铝气体悬浮焙烧炉主炉体炉衬传统的耐火浇注料--般是由一级高铝熟料颗粒0-8咖含量为25%左右,0-4咖含量为36%左右, 一级 高铝粉料39%,密度为1.3g/ci^以上的水玻璃溶液l(m左右作为结合剂混合一搅 拌一浇注一烘烤一烧结而成。烧后主炉耐火材料体密为2.7g/cm:'以上。 一级高 铝熟料的抗热震性差,水玻璃的 ...
【技术保护点】
一种用于氢氧化铝气体悬浮焙烧炉炉衬的耐火浇注料,是由焦宝石熟料和细晶莫来石、结合剂、复合添加剂按不同比例组成的混合物,经筑炉、烘炉,烧结而成,其特征在于使用烧结过的莫来石和焦宝石熟料,各种原材料的重量百分比为:焦宝石熟料,粒径<3m m,含量为27~33%焦宝石熟料,3-5mm,含量为25~30%焦宝石熟料,粒径介于5mm和8mm之间,含量为8~15%细晶莫来石粉,粒径<0.074mm,含量为15~25%结合剂采用ρ-Al↓[2]O↓[3 ],其含量为5~8%复合添加剂采用α-Al↓[2]O↓[3] ...
【技术特征摘要】
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